版权声明：本文为HaiyuKing原创文章，转载请注明出处！

前言

本Demo使用的是PhotoPicker 0.9.12版本，里面集成的glide版本号是4.1.1。这里就不进行特殊的个性化处理了（比如新增NewImagePagerDialogFragment.java用于对话框样式预览图片、新增NewPhotoPickerFragment.java用于单独作为自定义DialogFragment的其中一个Fragment和其他Fragment共存），而是记录下使用步骤（当然了，github上讲解的很清楚了，大家可以直接参考《donglua/PhotoPicker》）。

不过，本文对PhotoPicker进行了简单的修改，对UI进行了部分修改。【所以本Demo最后使用的是方式2——通过引入PhotoPicker这个module的方式】

效果图

  

代码分析

引入PhotoPicker有两种方式【二选一】

1、通过Gradle方式，在APP的build.gradle中引用【见导入步骤】

2、下载整个压缩包，然后导入PhotoPicker的module，然后修改图片资源

2.1、下载压缩包

2.2、导入PhotoPicker的Module

提示下面的错误：

2.3、解决Plugin with id 'com.novoda.bintray-release' not found.问题

在项目的build.gradle文件中添加以下代码

  1. // Top-level build file where you can add configuration options common to all sub-projects/modules.
  2.  
  3. buildscript {
  4.  
  5.     repositories {
  6.         google()
  7.         jcenter()
  8.     }
  9.     dependencies {
  10.         classpath 'com.android.tools.build:gradle:3.0.1'
  11.         //解决PhotoPicker的Plugin with id 'com.novoda.bintray-release' not found.
  12.         classpath 'com.novoda:bintray-release:0.5.0'
  13.         // NOTE: Do not place your application dependencies here; they belong
  14.         // in the individual module build.gradle files
  15.     }
  16. }
  17.  
  18. allprojects {
  19.     repositories {
  20.         google()
  21.         jcenter()
  22.     }
  23. }
  24.  
  25. task clean(type: Delete) {
  26.     delete rootProject.buildDir
  27. }

2.4、修改图片资源（比如__picker_ic_photo_black_48dp.png、__picker_checkbox_marked.png、__picker_checkbox_n.png）

注意：需要修改所有drawable-xxxx目录下的图片

原始的图片资源：

修改后的图片资源：

2.5、添加图片资源【__picker_transparent_bg.png、down_arrow.png、up_arrow.png】

添加到drawable-xxhdpi目录下

2.6、修改drawable目录下的__picker_photo_bg.xml和__picker_checkbox_bg.xml【主要用于替换图片列表项的底部背景图】

原代码1：

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <selector xmlns:android="http://schemas.android.com/apk/res/android">
  3.  
  4.   <item android:state_selected="true">
  5.     <shape>
  6.       <stroke android:color="@color/__picker_item_photo_border_selected"
  7.           android:width="1dip"/>
  8.     </shape>
  9.   </item>
  10.  
  11.   <item>
  12.     <shape>
  13.       <stroke android:color="@color/__picker_item_photo_border_n"
  14.           android:width="1dip"/>
  15.     </shape>
  16.   </item>
  17.  
  18. </selector>

__picker_photo_bg.xml

修改后的代码：

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <selector xmlns:android="http://schemas.android.com/apk/res/android">
  3.   <item android:state_selected="true">
  4.     <shape android:shape="rectangle">
  5.       <stroke android:width="2dip"
  6.               android:color="@color/__picker_item_photo_border_selected"/>
  7.       <solid android:color="@color/__picker_selected_bg"/>
  8.       <solid></solid>
  9.     </shape>
  10.   </item>
  11.  
  12.   <item android:drawable="@drawable/__picker_transparent_bg">
  13.     <shape android:shape="rectangle">
  14.       <stroke android:width="2dip"
  15.               android:color="@color/__picker_item_photo_border_n"/>
  16.       <!--<solid android:color="#00000000"/>-->
  17.     </shape>
  18.   </item>
  19. </selector>

原代码2：

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <selector xmlns:android="http://schemas.android.com/apk/res/android">
  3.  
  4.   <item android:state_selected="true">
  5.     <layer-list>
  6.       <item>
  7.         <shape>
  8.           <corners android:radius="2dip"/>
  9.           <padding android:top="-2dip"
  10.               android:left="-2dip"
  11.               android:bottom="-2dip"
  12.               android:right="-2dip"/>
  13.           <stroke android:width="1dip"
  14.               android:color="@android:color/white"/>
  15.         </shape>
  16.       </item>
  17.       <item android:drawable="@drawable/__picker_checkbox_marked"/>
  18.     </layer-list>
  19.   </item>
  20.  
  21.   <item>
  22.     <layer-list>
  23.       <item>
  24.         <shape>
  25.           <corners android:radius="2dip"/>
  26.           <padding android:top="-2dip"
  27.               android:left="-2dip"
  28.               android:bottom="-2dip"
  29.               android:right="-2dip"/>
  30.           <stroke android:width="1dip"
  31.               android:color="@android:color/white"/>
  32.         </shape>
  33.       </item>
  34.       <item android:drawable="@drawable/__picker_checkbox_n"/>
  35.     </layer-list>
  36.   </item>
  37.  
  38. </selector>

__picker_checkbox_bg.xml

修改后的

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <selector xmlns:android="http://schemas.android.com/apk/res/android">
  3.  
  4.   <item android:state_selected="true">
  5.     <layer-list>
  6.       <!--<item>
  7.         <shape>
  8.           <corners android:radius="10dip"/>
  9.           <padding android:top="-2dip"
  10.               android:left="-2dip"
  11.               android:bottom="-2dip"
  12.               android:right="-2dip"/>
  13.           <stroke android:width="1dip"
  14.               android:color="@android:color/white"/>
  15.           <solid android:color="@android:color/white"></solid>
  16.         </shape>
  17.       </item>-->
  18.       <item android:drawable="@drawable/__picker_checkbox_marked"/>
  19.     </layer-list>
  20.   </item>
  21.  
  22.   <item>
  23.     <layer-list>
  24.       <!--<item>
  25.         <shape>
  26.           <corners android:radius="10dip"/>
  27.           <padding android:top="-2dip"
  28.               android:left="-2dip"
  29.               android:bottom="-2dip"
  30.               android:right="-2dip"/>
  31.           <stroke android:width="1dip"
  32.               android:color="@android:color/white"/>
  33.           <solid android:color="@android:color/white"></solid>
  34.         </shape>
  35.       </item>-->
  36.       <item android:drawable="@drawable/__picker_checkbox_n"/>
  37.     </layer-list>
  38.   </item>
  39.  
  40. </selector>

2.7、修改__picker_fragment_photo_picker.xml文件【主要用于添加图片目录的上下箭头图标】

原代码

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     android:orientation="vertical"
  4.     android:layout_width="match_parent"
  5.     android:layout_height="match_parent"
  6.     >
  7.  
  8.   <android.support.v7.widget.RecyclerView
  9.       android:id="@+id/rv_photos"
  10.       android:layout_width="match_parent"
  11.       android:gravity="center"
  12.       android:layout_weight="1"
  13.       android:layout_height="0dip"
  14.       />
  15.  
  16.   <LinearLayout
  17.       android:layout_width="match_parent"
  18.       android:layout_height="wrap_content"
  19.       android:background="?attr/colorPrimary"
  20.       >
  21.         <Button
  22.             android:id="@+id/button"
  23.             android:text="@string/__picker_all_image"
  24.             android:layout_width="wrap_content"
  25.             android:gravity="center"
  26.             android:layout_height="wrap_content"
  27.             style="@style/Widget.AppCompat.ActionButton"
  28.             />
  29.  
  30.   </LinearLayout>
  31.  
  32. </LinearLayout>

__picker_fragment_photo_picker.xml

修改后的代码

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.               android:orientation="vertical"
  4.               android:layout_width="match_parent"
  5.               android:layout_height="match_parent"
  6.     >
  7.  
  8.     <android.support.v7.widget.RecyclerView
  9.         android:id="@+id/rv_photos"
  10.         android:layout_width="match_parent"
  11.         android:gravity="center"
  12.         android:layout_weight="1"
  13.         android:layout_height="0dip"
  14.         />
  15.  
  16.     <View
  17.         android:layout_width="match_parent"
  18.         android:layout_height="1dp"
  19.         android:background="#e9e9e9"/>
  20.  
  21.     <LinearLayout
  22.         android:layout_width="match_parent"
  23.         android:layout_height="wrap_content"
  24.         android:background="?attr/colorPrimary"
  25.         >
  26.         <!--<Button
  27.             android:id="@+id/button"
  28.             android:text="@string/__picker_all_image"
  29.             android:layout_width="wrap_content"
  30.             android:gravity="center"
  31.             android:layout_height="wrap_content"
  32.             style="@style/Widget.AppCompat.ActionButton"
  33.             />-->
  34.  
  35.         <TextView
  36.             android:id="@+id/button"
  37.             android:layout_width="0.0dp"
  38.             android:layout_weight="1"
  39.             android:layout_height="match_parent"
  40.             android:text="@string/__picker_all_image"
  41.             android:textColor="@color/__picker_text_120"
  42.             android:textSize="16sp"
  43.             android:drawableRight="@drawable/up_arrow"
  44.             android:drawablePadding="8dp"
  45.             android:paddingLeft="10dp"
  46.             android:paddingRight="10dp"
  47.             android:gravity="center_vertical"
  48.             style="@style/Widget.AppCompat.ActionButton"
  49.             />
  50.         <!-- 现在用不到，只是占位用 -->
  51.         <ImageView
  52.             android:layout_width="0.0dp"
  53.             android:layout_weight="1"
  54.             android:layout_height="match_parent"
  55.             android:src="@drawable/__picker_camera"
  56.             android:layout_gravity="center_vertical"
  57.             android:paddingLeft="15dp"
  58.             android:paddingRight="15dp"
  59.             android:visibility="invisible"/>
  60.  
  61.     </LinearLayout>
  62.  
  63. </LinearLayout>

2.8、修改PhotoPickerFragment.java文件【主要是实现上下箭头的更换功能】

搜索why，查看改动的代码：

  1. package me.iwf.photopicker.fragment;
  2.  
  3. import android.content.ActivityNotFoundException;
  4. import android.content.Intent;
  5. import android.content.pm.PackageManager;
  6. import android.graphics.drawable.Drawable;
  7. import android.os.Bundle;
  8. import android.support.annotation.NonNull;
  9. import android.support.v4.app.Fragment;
  10. import android.support.v4.app.FragmentActivity;
  11. import android.support.v4.content.ContextCompat;
  12. import android.support.v7.widget.DefaultItemAnimator;
  13. import android.support.v7.widget.ListPopupWindow;
  14. import android.support.v7.widget.OrientationHelper;
  15. import android.support.v7.widget.RecyclerView;
  16. import android.support.v7.widget.StaggeredGridLayoutManager;
  17. import android.util.Log;
  18. import android.view.Gravity;
  19. import android.view.LayoutInflater;
  20. import android.view.View;
  21. import android.view.View.OnClickListener;
  22. import android.view.ViewGroup;
  23. import android.widget.AdapterView;
  24. import android.widget.PopupWindow;
  25. import android.widget.TextView;
  26.  
  27. import com.bumptech.glide.Glide;
  28. import com.bumptech.glide.RequestManager;
  29.  
  30. import java.io.IOException;
  31. import java.util.ArrayList;
  32. import java.util.List;
  33.  
  34. import me.iwf.photopicker.PhotoPickerActivity;
  35. import me.iwf.photopicker.R;
  36. import me.iwf.photopicker.adapter.PhotoGridAdapter;
  37. import me.iwf.photopicker.adapter.PopupDirectoryListAdapter;
  38. import me.iwf.photopicker.entity.Photo;
  39. import me.iwf.photopicker.entity.PhotoDirectory;
  40. import me.iwf.photopicker.event.OnPhotoClickListener;
  41. import me.iwf.photopicker.utils.AndroidLifecycleUtils;
  42. import me.iwf.photopicker.utils.ImageCaptureManager;
  43. import me.iwf.photopicker.utils.MediaStoreHelper;
  44. import me.iwf.photopicker.utils.PermissionsConstant;
  45. import me.iwf.photopicker.utils.PermissionsUtils;
  46.  
  47. import static android.app.Activity.RESULT_OK;
  48. import static me.iwf.photopicker.PhotoPicker.DEFAULT_COLUMN_NUMBER;
  49. import static me.iwf.photopicker.PhotoPicker.EXTRA_PREVIEW_ENABLED;
  50. import static me.iwf.photopicker.PhotoPicker.EXTRA_SHOW_GIF;
  51. import static me.iwf.photopicker.utils.MediaStoreHelper.INDEX_ALL_PHOTOS;
  52.  
  53. /**
  54.  * Created by donglua on 15/5/31.
  55.  */
  56. public class PhotoPickerFragment extends Fragment {
  57.  
  58.   private ImageCaptureManager captureManager;
  59.   private PhotoGridAdapter photoGridAdapter;
  60.  
  61.   private PopupDirectoryListAdapter listAdapter;
  62.   //所有photos的路径
  63.   private List<PhotoDirectory> directories;
  64.   //传入的已选照片
  65.   private ArrayList<String> originalPhotos;
  66.  
  67.   private int SCROLL_THRESHOLD = 30;
  68.   int column;
  69.   //目录弹出框的一次最多显示的目录数目
  70.   public static int COUNT_MAX = 4;
  71.   private final static String EXTRA_CAMERA = "camera";
  72.   private final static String EXTRA_COLUMN = "column";
  73.   private final static String EXTRA_COUNT = "count";
  74.   private final static String EXTRA_GIF = "gif";
  75.   private final static String EXTRA_ORIGIN = "origin";
  76.   private ListPopupWindow listPopupWindow;
  77.   private RequestManager mGlideRequestManager;
  78.  
  79.   public static PhotoPickerFragment newInstance(boolean showCamera, boolean showGif,
  80.       boolean previewEnable, int column, int maxCount, ArrayList<String> originalPhotos) {
  81.     Bundle args = new Bundle();
  82.     args.putBoolean(EXTRA_CAMERA, showCamera);
  83.     args.putBoolean(EXTRA_GIF, showGif);
  84.     args.putBoolean(EXTRA_PREVIEW_ENABLED, previewEnable);
  85.     args.putInt(EXTRA_COLUMN, column);
  86.     args.putInt(EXTRA_COUNT, maxCount);
  87.     args.putStringArrayList(EXTRA_ORIGIN, originalPhotos);
  88.     PhotoPickerFragment fragment = new PhotoPickerFragment();
  89.     fragment.setArguments(args);
  90.     return fragment;
  91.   }
  92.  
  93.   @Override public void onCreate(Bundle savedInstanceState) {
  94.     super.onCreate(savedInstanceState);
  95.  
  96.     setRetainInstance(true);
  97.  
  98.     mGlideRequestManager = Glide.with(this);
  99.  
  100.     directories = new ArrayList<>();
  101.     originalPhotos = getArguments().getStringArrayList(EXTRA_ORIGIN);
  102.  
  103.     column = getArguments().getInt(EXTRA_COLUMN, DEFAULT_COLUMN_NUMBER);
  104.     boolean showCamera = getArguments().getBoolean(EXTRA_CAMERA, true);
  105.     boolean previewEnable = getArguments().getBoolean(EXTRA_PREVIEW_ENABLED, true);
  106.  
  107.     photoGridAdapter = new PhotoGridAdapter(getActivity(), mGlideRequestManager, directories, originalPhotos, column);
  108.     photoGridAdapter.setShowCamera(showCamera);
  109.     photoGridAdapter.setPreviewEnable(previewEnable);
  110.  
  111.     listAdapter  = new PopupDirectoryListAdapter(mGlideRequestManager, directories);
  112.  
  113.     Bundle mediaStoreArgs = new Bundle();
  114.  
  115.     boolean showGif = getArguments().getBoolean(EXTRA_GIF);
  116.     mediaStoreArgs.putBoolean(EXTRA_SHOW_GIF, showGif);
  117.     MediaStoreHelper.getPhotoDirs(getActivity(), mediaStoreArgs,
  118.         new MediaStoreHelper.PhotosResultCallback() {
  119.           @Override public void onResultCallback(List<PhotoDirectory> dirs) {
  120.             directories.clear();
  121.             directories.addAll(dirs);
  122.             photoGridAdapter.notifyDataSetChanged();
  123.             listAdapter.notifyDataSetChanged();
  124.             adjustHeight();
  125.           }
  126.         });
  127.  
  128.     captureManager = new ImageCaptureManager(getActivity());
  129.   }
  130.  
  131.   @Override
  132.   public void onResume() {
  133.     super.onResume();
  134.     if(getActivity() instanceof PhotoPickerActivity){
  135.       PhotoPickerActivity photoPickerActivity = (PhotoPickerActivity) getActivity();
  136.       photoPickerActivity.updateTitleDoneItem();
  137.     }
  138.   }
  139.  
  140.   @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,
  141.       Bundle savedInstanceState) {
  142.  
  143.     final View rootView = inflater.inflate(R.layout.__picker_fragment_photo_picker, container, false);
  144.  
  145.     RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.rv_photos);
  146.     StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(column, OrientationHelper.VERTICAL);
  147.     layoutManager.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS);
  148.     recyclerView.setLayoutManager(layoutManager);
  149.     recyclerView.setAdapter(photoGridAdapter);
  150.     recyclerView.setItemAnimator(new DefaultItemAnimator());
  151.  
  152.     //final Button btSwitchDirectory = (Button) rootView.findViewById(R.id.button);
  153.     final TextView btSwitchDirectory = (TextView) rootView.findViewById(R.id.button);//why
  154.  
  155.     listPopupWindow = new ListPopupWindow(getActivity());
  156.     listPopupWindow.setWidth(ListPopupWindow.MATCH_PARENT);
  157.     listPopupWindow.setAnchorView(btSwitchDirectory);
  158.     listPopupWindow.setAdapter(listAdapter);
  159.     listPopupWindow.setModal(true);
  160.     listPopupWindow.setDropDownGravity(Gravity.BOTTOM);
  161.  
  162.     listPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  163.       @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
  164.         listPopupWindow.dismiss();
  165.  
  166.         PhotoDirectory directory = directories.get(position);
  167.  
  168.         btSwitchDirectory.setText(directory.getName());
  169.  
  170.         photoGridAdapter.setCurrentDirectoryIndex(position);
  171.         photoGridAdapter.notifyDataSetChanged();
  172.       }
  173.     });
  174.  
  175.     //添加popwindow隐藏的监听--why
  176.     listPopupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
  177.       @Override
  178.       public void onDismiss() {
  179.         //监听popwindow隐藏的时候的操作
  180.         Drawable drawableUp = ContextCompat.getDrawable(getActivity(),R.drawable.up_arrow);
  181.         drawableUp.setBounds(0, 0, drawableUp.getMinimumWidth(), drawableUp.getMinimumHeight());
  182.         btSwitchDirectory.setCompoundDrawables(null,null,drawableUp,null);
  183.       }
  184.     });
  185.  
  186.     photoGridAdapter.setOnPhotoClickListener(new OnPhotoClickListener() {
  187.       @Override public void onClick(View v, int position, boolean showCamera) {
  188.         final int index = showCamera ? position - 1 : position;
  189.  
  190.         List<String> photos = photoGridAdapter.getCurrentPhotoPaths();
  191.  
  192.         ImagePagerFragment imagePagerFragment =
  193.             ImagePagerFragment.newInstance(photos, index);
  194.  
  195.         ((PhotoPickerActivity) getActivity()).addImagePagerFragment(imagePagerFragment);
  196.       }
  197.     });
  198.  
  199.     photoGridAdapter.setOnCameraClickListener(new OnClickListener() {
  200.       @Override public void onClick(View view) {
  201.         if (!PermissionsUtils.checkCameraPermission(PhotoPickerFragment.this)) return;
  202.         if (!PermissionsUtils.checkWriteStoragePermission(PhotoPickerFragment.this)) return;
  203.         openCamera();
  204.       }
  205.     });
  206.  
  207.     btSwitchDirectory.setOnClickListener(new OnClickListener() {
  208.       @Override public void onClick(View v) {
  209.  
  210.         if (listPopupWindow.isShowing()) {
  211.           listPopupWindow.dismiss();
  212.         } else if (!getActivity().isFinishing()) {
  213.           adjustHeight();
  214.           //why
  215.           Drawable drawableDown = ContextCompat.getDrawable(getActivity(),R.drawable.down_arrow);
  216.           drawableDown.setBounds(0, 0, drawableDown.getMinimumWidth(), drawableDown.getMinimumHeight());
  217.           btSwitchDirectory.setCompoundDrawables(null,null,drawableDown,null);
  218.           listPopupWindow.show();
  219.         }
  220.       }
  221.     });
  222.  
  223.     recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
  224.       @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
  225.         super.onScrolled(recyclerView, dx, dy);
  226.         // Log.d(">>> Picker >>>", "dy = " + dy);
  227.         if (Math.abs(dy) > SCROLL_THRESHOLD) {
  228.           mGlideRequestManager.pauseRequests();
  229.         } else {
  230.           resumeRequestsIfNotDestroyed();
  231.         }
  232.       }
  233.       @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
  234.         if (newState == RecyclerView.SCROLL_STATE_IDLE) {
  235.           resumeRequestsIfNotDestroyed();
  236.         }
  237.       }
  238.     });
  239.  
  240.     return rootView;
  241.   }
  242.  
  243.   private void openCamera() {
  244.     try {
  245.       Intent intent = captureManager.dispatchTakePictureIntent();
  246.       startActivityForResult(intent, ImageCaptureManager.REQUEST_TAKE_PHOTO);
  247.     } catch (IOException e) {
  248.       e.printStackTrace();
  249.     } catch (ActivityNotFoundException e) {
  250.       Log.e("PhotoPickerFragment", "No Activity Found to handle Intent", e);
  251.     }
  252.   }
  253.  
  254.   @Override public void onActivityResult(int requestCode, int resultCode, Intent data) {
  255.     if (requestCode == ImageCaptureManager.REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
  256.  
  257.       if (captureManager == null) {
  258.         FragmentActivity activity = getActivity();
  259.         captureManager = new ImageCaptureManager(activity);
  260.       }
  261.  
  262.       captureManager.galleryAddPic();
  263.       if (directories.size() > 0) {
  264.         String path = captureManager.getCurrentPhotoPath();
  265.         PhotoDirectory directory = directories.get(INDEX_ALL_PHOTOS);
  266.         directory.getPhotos().add(INDEX_ALL_PHOTOS, new Photo(path.hashCode(), path));
  267.         directory.setCoverPath(path);
  268.         photoGridAdapter.notifyDataSetChanged();
  269.       }
  270.     }
  271.   }
  272.  
  273.   @Override
  274.   public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
  275.     if (grantResults.length > 0
  276.             && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
  277.       switch (requestCode) {
  278.         case PermissionsConstant.REQUEST_CAMERA:
  279.         case PermissionsConstant.REQUEST_EXTERNAL_WRITE:
  280.           if (PermissionsUtils.checkWriteStoragePermission(this) &&
  281.                   PermissionsUtils.checkCameraPermission(this)) {
  282.             openCamera();
  283.           }
  284.           break;
  285.       }
  286.     }
  287.   }
  288.  
  289.   public PhotoGridAdapter getPhotoGridAdapter() {
  290.     return photoGridAdapter;
  291.   }
  292.  
  293.   @Override public void onSaveInstanceState(Bundle outState) {
  294.     captureManager.onSaveInstanceState(outState);
  295.     super.onSaveInstanceState(outState);
  296.   }
  297.  
  298.   @Override public void onViewStateRestored(Bundle savedInstanceState) {
  299.     captureManager.onRestoreInstanceState(savedInstanceState);
  300.     super.onViewStateRestored(savedInstanceState);
  301.   }
  302.  
  303.   public ArrayList<String> getSelectedPhotoPaths() {
  304.     return photoGridAdapter.getSelectedPhotoPaths();
  305.   }
  306.  
  307.   public void adjustHeight() {
  308.     if (listAdapter == null) return;
  309.     int count = listAdapter.getCount();
  310.     count = count < COUNT_MAX ? count : COUNT_MAX;
  311.     if (listPopupWindow != null) {
  312.       listPopupWindow.setHeight(count * getResources().getDimensionPixelOffset(R.dimen.__picker_item_directory_height));
  313.     }
  314.   }
  315.  
  316.   @Override public void onDestroy() {
  317.     super.onDestroy();
  318.  
  319.     if (directories == null) {
  320.       return;
  321.     }
  322.  
  323.     for (PhotoDirectory directory : directories) {
  324.       directory.getPhotoPaths().clear();
  325.       directory.getPhotos().clear();
  326.       directory.setPhotos(null);
  327.     }
  328.     directories.clear();
  329.     directories = null;
  330.   }
  331.  
  332.   private void resumeRequestsIfNotDestroyed() {
  333.     if (!AndroidLifecycleUtils.canLoadImage(this)) {
  334.       return;
  335.     }
  336.  
  337.     mGlideRequestManager.resumeRequests();
  338.   }
  339. }

PhotoPickerFragment.java

2.9、修改__picker_item_photo.xml，设置图片列表项的内边距值

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <me.iwf.photopicker.widget.SquareItemLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     android:layout_width="match_parent"
  4.     android:layout_height="match_parent"
  5.     android:padding="3dp"
  6.     >
  7.   <ImageView
  8.       android:padding="1dip"
  9.       android:layout_gravity="center"
  10.       android:id="@+id/iv_photo"
  11.       android:scaleType="centerCrop"
  12.       android:layout_width="match_parent"
  13.       android:background="@drawable/__picker_photo_bg"
  14.       android:layout_height="match_parent"
  15.       android:adjustViewBounds="true"
  16.       />
  17.  
  18.   <ImageView
  19.       android:layout_alignParentTop="true"
  20.       android:layout_alignParentRight="true"
  21.       android:clickable="true"
  22.       android:paddingTop="10dip"
  23.       android:paddingRight="10dip"
  24.       android:paddingLeft="20dip"
  25.       android:paddingBottom="20dip"
  26.       android:id="@+id/v_selected"
  27.       android:src="@drawable/__picker_checkbox_bg"
  28.       android:layout_width="wrap_content"
  29.       android:layout_height="wrap_content"
  30.       />
  31.  
  32. </me.iwf.photopicker.widget.SquareItemLayout>

2.10、修改图片列表项选中后的颜色值（colors.xml文件中修改）

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <resources>
  3.  
  4.   <color name="__picker_pager_bg">#CA000000</color>
  5.   <color name="__picker_selected_bg">#44000000</color>
  6.   <color name="__picker_black_40">#282828</color>
  7.   <color name="__picker_common_primary">#f3f3f3</color>
  8.  
  9.   <color name="__picker_text_40">#282828</color>
  10.   <color name="__picker_text_80">#505050</color>
  11.   <color name="__picker_text_120">#787878</color>
  12.   <!--<color name="__picker_item_photo_border_selected">#ff99cc00</color>-->
  13.   <!--why-->
  14.   <color name="__picker_item_photo_border_selected">#1A78EC</color>
  15.   <color name="__picker_item_photo_border_n">#33ffffff</color>
  16.  
  17. </resources>

至此，PhotoPicker基本上修改完了，后续可以根据需求继续修改。下面就是运用到APP中的步骤【导入步骤跟方式1几乎一样，不同的就是app的build.gradle导入的photopicker不一样】。

2.11、在APP的build.gradle文件添加以下代码

  1. apply plugin: 'com.android.application'
  2.  
  3. android {
  4.     compileSdkVersion 27
  5.     defaultConfig {
  6.         applicationId "com.why.project.photopickernewdemo"
  7.         minSdkVersion 16
  8.         targetSdkVersion 27
  9.         versionCode 1
  10.         versionName "1.0"
  11.         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  12.     }
  13.     buildTypes {
  14.         release {
  15.             minifyEnabled false
  16.             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  17.         }
  18.     }
  19. }
  20.  
  21. dependencies {
  22.     implementation fileTree(dir: 'libs', include: ['*.jar'])
  23.     implementation 'com.android.support:appcompat-v7:27.1.1'
  24.     implementation 'com.android.support.constraint:constraint-layout:1.1.2'
  25.     testImplementation 'junit:junit:4.12'
  26.     androidTestImplementation 'com.android.support.test:runner:1.0.2'
  27.     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
  28.  
  29.     //PhotoPicker
  30.     //compile 'me.iwf.photopicker:PhotoPicker:0.9.12@aar'
  31.     //方式2：使用自己导入并且修改后的module
  32.     implementation project(':PhotoPicker')
  33.     //compile 'com.android.support:appcompat-v7:27.1.1'//需要注释，因为新建项目都会自动引用这个appcompat-v7
  34.     compile 'com.android.support:recyclerview-v7:27.1.1'
  35.     compile 'com.android.support:design:27.1.1'
  36.     compile 'com.github.bumptech.glide:glide:4.1.1'
  37. }

2.12、在APP的AndroidManifest.xml中添加以下代码

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  3.           package="com.why.project.photopickernewdemo">
  4.  
  5.     <application
  6.         android:allowBackup="true"
  7.         android:icon="@mipmap/ic_launcher"
  8.         android:label="@string/app_name"
  9.         android:roundIcon="@mipmap/ic_launcher_round"
  10.         android:supportsRtl="true"
  11.         android:theme="@style/AppTheme">
  12.         <activity android:name=".MainActivity">
  13.             <intent-filter>
  14.                 <action android:name="android.intent.action.MAIN"/>
  15.  
  16.                 <category android:name="android.intent.category.LAUNCHER"/>
  17.             </intent-filter>
  18.         </activity>
  19.  
  20.         <!-- PhotoPicker -->
  21.         <activity android:name="me.iwf.photopicker.PhotoPickerActivity"
  22.                   android:theme="@style/customTheme"
  23.             />
  24.         <activity android:name="me.iwf.photopicker.PhotoPagerActivity"
  25.                   android:theme="@style/customTheme"/>
  26.     </application>
  27.  
  28. </manifest>

2.13、在styles.xml文件中添加以下代码

  1. <resources>
  2.  
  3.     <!-- Base application theme. -->
  4.     <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
  5.         <!-- Customize your theme here. -->
  6.         <item name="colorPrimary">@color/colorPrimary</item>
  7.         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
  8.         <item name="colorAccent">@color/colorAccent</item>
  9.     </style>
  10.  
  11.     <!-- PhotoPicker -->
  12.     <style name="customTheme" parent="Theme.AppCompat.Light.NoActionBar">
  13.         <!-- 解开注释的话，右侧的完成文本始终是设置的颜色，无法实现禁用状态下是灰色的功能 -->
  14.         <!--<item name="actionBarTheme">@style/actionBarTheme</item>-->
  15.         <!--背景颜色值-->
  16.         <item name="colorPrimary">#ffffff</item>
  17.         <!--导航栏高度值-->
  18.         <item name="actionBarSize">52dp</item>
  19.         <!-- 状态栏着色 -->
  20.         <item name="colorPrimaryDark">#378dfc</item>
  21.     </style>
  22.     <style name="actionBarTheme" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
  23.         <!--标题颜色值-->
  24.         <item name="android:textColorPrimary">#434343</item>
  25.         <!--右侧完成文本的大小值-->
  26.         <item name="android:textSize">16sp</item>
  27.         <!--右侧完成文本的颜色值-->
  28.         <item name="android:actionMenuTextColor">#1A78EC</item>
  29.     </style>
  30.  
  31. </resources>

具体使用参考《三、使用方法》

使用步骤

一、项目组织结构图

注意事项：

1、  导入类文件后需要change包名以及重新import R文件路径

2、  Values目录下的文件（strings.xml、dimens.xml、colors.xml等），如果项目中存在，则复制里面的内容，不要整个覆盖

二、导入步骤【方式1的导入步骤】

（1）在app的build.gradle文件中导入PhotoPicker【修改recyclerview、design的版本号和appcompat-v7统一】

注意：appcompat-v7version >= 23.0.0

  1. apply plugin: 'com.android.application'
  2.  
  3. android {
  4.     compileSdkVersion 27
  5.     defaultConfig {
  6.         applicationId "com.why.project.photopickernewdemo"
  7.         minSdkVersion 16
  8.         targetSdkVersion 27
  9.         versionCode 1
  10.         versionName "1.0"
  11.         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  12.     }
  13.     buildTypes {
  14.         release {
  15.             minifyEnabled false
  16.             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  17.         }
  18.     }
  19. }
  20.  
  21. dependencies {
  22.     implementation fileTree(dir: 'libs', include: ['*.jar'])
  23.     implementation 'com.android.support:appcompat-v7:27.1.1'
  24.     implementation 'com.android.support.constraint:constraint-layout:1.1.2'
  25.     testImplementation 'junit:junit:4.12'
  26.     androidTestImplementation 'com.android.support.test:runner:1.0.2'
  27.     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
  28.  
  29.     //PhotoPicker
  30.     compile 'me.iwf.photopicker:PhotoPicker:0.9.12@aar'
  31.     //compile 'com.android.support:appcompat-v7:27.1.1'//需要注释，因为新建项目都会自动引用这个appcompat-v7
  32.     compile 'com.android.support:recyclerview-v7:27.1.1'
  33.     compile 'com.android.support:design:27.1.1'
  34.     compile 'com.github.bumptech.glide:glide:4.1.1'
  35. }

（2）在APP的styles.xml文件中自定义样式（颜色、高度值等）

  1. <resources>
  2.  
  3.     <!-- Base application theme. -->
  4.     <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
  5.         <!-- Customize your theme here. -->
  6.         <item name="colorPrimary">@color/colorPrimary</item>
  7.         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
  8.         <item name="colorAccent">@color/colorAccent</item>
  9.     </style>
  10.  
  11.     <!-- PhotoPicker -->
  12.     <style name="customTheme" parent="Theme.AppCompat.Light.NoActionBar">
  13.         <!-- 解开注释的话，右侧的完成文本始终是设置的颜色，无法实现禁用状态下是灰色的功能 -->
  14.         <!--<item name="actionBarTheme">@style/actionBarTheme</item>-->
  15.         <!--背景颜色值-->
  16.         <item name="colorPrimary">#ffffff</item>
  17.         <!--导航栏高度值-->
  18.         <item name="actionBarSize">52dp</item>
  19.         <!-- 状态栏着色 -->
  20.         <item name="colorPrimaryDark">#378dfc</item>
  21.     </style>
  22.     <style name="actionBarTheme" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
  23.         <!--标题颜色值-->
  24.         <item name="android:textColorPrimary">#434343</item>
  25.         <!--右侧完成文本的大小值-->
  26.         <item name="android:textSize">16sp</item>
  27.         <!--右侧完成文本的颜色值-->
  28.         <item name="android:actionMenuTextColor">#1A78EC</item>
  29.     </style>
  30.  
  31. </resources>

（3）在APP的AndroidManifest.xml中添加以下代码【注意：使用上面自定义的样式】

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  3.           package="com.why.project.photopickernewdemo">
  4.  
  5.     <application
  6.         android:allowBackup="true"
  7.         android:icon="@mipmap/ic_launcher"
  8.         android:label="@string/app_name"
  9.         android:roundIcon="@mipmap/ic_launcher_round"
  10.         android:supportsRtl="true"
  11.         android:theme="@style/AppTheme">
  12.         <activity android:name=".MainActivity">
  13.             <intent-filter>
  14.                 <action android:name="android.intent.action.MAIN"/>
  15.  
  16.                 <category android:name="android.intent.category.LAUNCHER"/>
  17.             </intent-filter>
  18.         </activity>
  19.  
  20.         <!-- PhotoPicker -->
  21.         <activity android:name="me.iwf.photopicker.PhotoPickerActivity"
  22.                   android:theme="@style/customTheme"
  23.             />
  24.         <activity android:name="me.iwf.photopicker.PhotoPagerActivity"
  25.                   android:theme="@style/customTheme"/>
  26.     </application>
  27.  
  28. </manifest>

三、使用方法

（1）在项目中实现Recyclerview基本数据展现【比较简单，省略】【或者参考《Android快速开发常用知识点系列目录》下的RecyclerView篇章相关文章】

注意：PictureAdapter.java中使用的Glide是4.1.1版本，所以写法跟之前的Glide3.7.0版本是不一样的。

  1. package com.why.project.photopickernewdemo.adapter;
  2.  
  3. import android.content.Context;
  4. import android.net.Uri;
  5. import android.support.v7.widget.RecyclerView;
  6. import android.util.Log;
  7. import android.view.LayoutInflater;
  8. import android.view.View;
  9. import android.view.ViewGroup;
  10. import android.widget.ImageView;
  11. import android.widget.LinearLayout;
  12. import android.widget.RelativeLayout;
  13. import android.widget.TextView;
  14.  
  15. import com.bumptech.glide.Glide;
  16. import com.bumptech.glide.Priority;
  17. import com.bumptech.glide.load.engine.DiskCacheStrategy;
  18. import com.bumptech.glide.request.RequestOptions;
  19. import com.why.project.photopickernewdemo.R;
  20. import com.why.project.photopickernewdemo.bean.PictureBean;
  21.  
  22. import java.io.File;
  23. import java.util.ArrayList;
  24. import java.util.List;
  25.  
  26. import static com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions.withCrossFade;
  27.  
  28. /**
  29.  * Created by HaiyuKing
  30.  * Used 照片网格适配器
  31.  */
  32.  
  33. public class PictureAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
  34.  
  35.     private static final String TAG = PictureAdapter.class.getSimpleName();
  36.  
  37.     /**上下文*/
  38.     private Context myContext;
  39.     /**自定义列表项标题集合*/
  40.     private ArrayList<PictureBean> listitemList;
  41.  
  42.     final static int TYPE_ADD = 1;
  43.     final static int TYPE_PHOTO = 2;
  44.  
  45.     public final static int MAX = 15;//总数目，这里根据实际情况设置，设置100基本上表明无限制了
  46.  
  47.     /*
  48.     * 构造函数
  49.     */
  50.     public PictureAdapter(Context context, ArrayList<PictureBean> itemlist) {
  51.         myContext = context;
  52.         listitemList = itemlist;
  53.     }
  54.  
  55.     /**
  56.      * 获取总的条目数
  57.      */
  58.     @Override
  59.     public int getItemCount() {
  60.         Log.w(TAG,"{getItemCount}listitemList.size()="+listitemList.size());
  61.         int count = listitemList.size();
  62.         if (count > MAX) {
  63.             count = MAX;
  64.         }
  65.         count = count + 1;
  66.         return count;
  67.     }
  68.  
  69.     @Override
  70.     public int getItemViewType(int position) {
  71.         Log.w(TAG,"{getItemViewType}position="+position);
  72.         Log.w(TAG,"{getItemViewType}listitemList.size()="+listitemList.size());
  73.         return (position == listitemList.size()) ? TYPE_ADD : TYPE_PHOTO;
  74.     }
  75.  
  76.     /**
  77.      * 创建ViewHolder
  78.      */
  79.     @Override
  80.     public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
  81.         if(viewType == TYPE_ADD) {
  82.             View viewfoot = LayoutInflater.from(myContext).inflate(R.layout.pic_grid_foot_item, parent, false);
  83.             ItemFootViewHolder itemfootViewHolder = new ItemFootViewHolder(viewfoot);
  84.             return itemfootViewHolder;
  85.         } else if(viewType == TYPE_PHOTO) {
  86.             View view = LayoutInflater.from(myContext).inflate(R.layout.pic_grid_item, parent, false);
  87.             ItemViewHolder itemViewHolder = new ItemViewHolder(view);
  88.             return itemViewHolder;
  89.         }
  90.         return null;
  91.     }
  92.  
  93.     /**
  94.      * 声明列表项ViewHolder*/
  95.     static class ItemViewHolder extends RecyclerView.ViewHolder
  96.     {
  97.         public ItemViewHolder(View view)
  98.         {
  99.             super(view);
  100.             griditemLayout = (LinearLayout) view.findViewById(R.id.griditemLayout);
  101.             griditemimgLayout = (RelativeLayout) view.findViewById(R.id.griditemimgLayout);
  102.             grid_img = (ImageView) view.findViewById(R.id.grid_img);
  103.             grid_img_state = (TextView) view.findViewById(R.id.grid_img_state);
  104.         }
  105.  
  106.         LinearLayout griditemLayout;
  107.         RelativeLayout griditemimgLayout;
  108.         ImageView grid_img;
  109.  
  110.         TextView grid_img_state;
  111.     }
  112.  
  113.     /**
  114.      * 声明最后一个ViewHolder*/
  115.     static class ItemFootViewHolder extends RecyclerView.ViewHolder
  116.     {
  117.         public ItemFootViewHolder(View view)
  118.         {
  119.             super(view);
  120.             gridfootitemLayout = (RelativeLayout) view.findViewById(R.id.gridfootitemLayout);
  121.         }
  122.         RelativeLayout gridfootitemLayout;
  123.     }
  124.  
  125.     /**
  126.      * 将数据绑定至ViewHolder
  127.      */
  128.     @Override
  129.     public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int index) {
  130.  
  131.         if(viewHolder instanceof ItemViewHolder){
  132.             PictureBean listItemModel = listitemList.get(index);
  133.             final ItemViewHolder itemViewHold = ((ItemViewHolder)viewHolder);
  134.  
  135.             Uri uri = Uri.fromFile(new File(listItemModel.getPicPath()));
  136.  
  137.             RequestOptions options = new RequestOptions()
  138.                     //设置等待时的图片
  139.                     .placeholder(R.drawable.img_loading)
  140.                     //设置加载失败后的图片显示
  141.                     .error(R.drawable.img_error)
  142.                     //缓存策略,跳过内存缓存【此处应该设置为false，否则列表刷新时会闪一下】
  143.                     .skipMemoryCache(false)
  144.                     //缓存策略,硬盘缓存-仅仅缓存最终的图像，即降低分辨率后的（或者是转换后的）
  145.                     .diskCacheStrategy(DiskCacheStrategy.ALL)
  146.                     //设置图片加载的优先级
  147.                     .priority(Priority.HIGH);
  148.  
  149.             Glide.with(myContext)
  150.                     .load(uri)
  151.                     .apply(options)
  152.                     //默认淡入淡出动画
  153.                     .transition(withCrossFade())
  154.                     .into(itemViewHold.grid_img);
  155.  
  156.             itemViewHold.grid_img_state.setText("(" + (index+1) + "/" + listitemList.size() + ")");
  157.  
  158.             //如果设置了回调，则设置点击事件
  159.             if (mOnItemClickLitener != null)
  160.             {
  161.                 itemViewHold.grid_img.setOnClickListener(new View.OnClickListener() {
  162.                     @Override
  163.                     public void onClick(View view) {
  164.                         int position = itemViewHold.getLayoutPosition();//在增加数据或者减少数据时候，position和index就不一样了
  165.                         mOnItemClickLitener.onItemClick(view,position);
  166.                     }
  167.                 });
  168.             }
  169.         }else if(viewHolder instanceof ItemFootViewHolder){
  170.             final ItemFootViewHolder itemFootViewHold = ((ItemFootViewHolder)viewHolder);
  171.             //如果设置了回调，则设置点击事件
  172.             if (mOnItemClickLitener != null)
  173.             {
  174.                 itemFootViewHold.gridfootitemLayout.setOnClickListener(new View.OnClickListener() {
  175.                     @Override
  176.                     public void onClick(View view) {
  177.                         mOnItemClickLitener.onItemAddClick();
  178.                     }
  179.                 });
  180.             }
  181.         }
  182.  
  183.     }
  184.  
  185.     /**
  186.      * 添加Item--用于动画的展现*/
  187.     public void addItem(int position,PictureBean itemModel) {
  188.         listitemList.add(position,itemModel);
  189.         notifyItemInserted(position);
  190.     }
  191.     /**
  192.      * 删除Item--用于动画的展现*/
  193.     public void removeItem(int position) {
  194.         listitemList.remove(position);
  195.         notifyItemRemoved(position);
  196.     }
  197.  
  198.     /*=====================添加OnItemClickListener回调================================*/
  199.     public interface OnItemClickLitener
  200.     {
  201.         /**图片的点击事件*/
  202.         void onItemClick(View view, int position);
  203.         /**添加的点击事件*/
  204.         void onItemAddClick();
  205.     }
  206.  
  207.     private OnItemClickLitener mOnItemClickLitener;
  208.  
  209.     public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener)
  210.     {
  211.         this.mOnItemClickLitener = mOnItemClickLitener;
  212.     }
  213.  
  214.     //返回当前图片集合的所有路径集合【用于预览】
  215.     public List<String> getAllPhotoPaths() {
  216.         List<String> allPhotoPaths = new ArrayList<String>(listitemList.size());
  217.         for (PictureBean  pictureBean: listitemList) {
  218.             allPhotoPaths.add(pictureBean.getPicPath());
  219.         }
  220.         return allPhotoPaths;
  221.     }
  222.  
  223. }

（2）常规使用

  1. package com.why.project.photopickernewdemo;
  2.  
  3. import android.app.Activity;
  4. import android.content.Intent;
  5. import android.os.Bundle;
  6. import android.support.v7.app.AppCompatActivity;
  7. import android.support.v7.widget.GridLayoutManager;
  8. import android.support.v7.widget.RecyclerView;
  9. import android.util.Log;
  10. import android.view.View;
  11. import android.widget.Toast;
  12.  
  13. import com.why.project.photopickernewdemo.adapter.PictureAdapter;
  14. import com.why.project.photopickernewdemo.bean.PictureBean;
  15. import com.why.project.photopickernewdemo.utils.Globals;
  16.  
  17. import java.util.ArrayList;
  18.  
  19. import me.iwf.photopicker.PhotoPicker;
  20. import me.iwf.photopicker.PhotoPreview;
  21.  
  22. public class MainActivity extends AppCompatActivity {
  23.  
  24.     private static final String TAG = MainActivity.class.getSimpleName();
  25.  
  26.     private RecyclerView mRecyclerView;
  27.     private ArrayList<PictureBean> mPictureBeansList;
  28.     private PictureAdapter mPictureAdapter;
  29.  
  30.     private ArrayList<String> selPhotosPath = null;//选中的图片路径集合
  31.  
  32.     @Override
  33.     protected void onCreate(Bundle savedInstanceState) {
  34.         super.onCreate(savedInstanceState);
  35.         setContentView(R.layout.activity_main);
  36.  
  37.         initViews();
  38.         initDatas();
  39.         initEvents();
  40.     }
  41.  
  42.     private void initViews() {
  43.         mRecyclerView = findViewById(R.id.picture_grid);
  44.     }
  45.  
  46.     private void initDatas() {
  47.         selPhotosPath = new ArrayList<String>();
  48.         //=============图片九宫格=========================
  49.         mPictureAdapter = null;
  50.         mPictureBeansList = new ArrayList<PictureBean>();
  51.         //设置布局管理器
  52.         GridLayoutManager gridLayoutManager = new GridLayoutManager(this, 3);
  53.         mRecyclerView.setLayoutManager(gridLayoutManager);
  54.  
  55.         if(mPictureAdapter == null){
  56.             //设置适配器
  57.             mPictureAdapter = new PictureAdapter(this, mPictureBeansList);
  58.             mRecyclerView.setAdapter(mPictureAdapter);
  59.             //添加分割线
  60.             //设置添加删除动画
  61.             //调用ListView的setSelected(!ListView.isSelected())方法，这样就能及时刷新布局
  62.             mRecyclerView.setSelected(true);
  63.         }else{
  64.             mPictureAdapter.notifyDataSetChanged();
  65.         }
  66.     }
  67.  
  68.     private void initEvents() {
  69.         //图片九宫格点击事件
  70.         mPictureAdapter.setOnItemClickLitener(new PictureAdapter.OnItemClickLitener() {
  71.             @Override
  72.             public void onItemClick(View v, int position) {
  73.                 //打开图片预览界面
  74.                 ArrayList<String> photos = (ArrayList<String>) mPictureAdapter.getAllPhotoPaths();
  75.                 PhotoPreview.builder()
  76.                         .setPhotos(photos)
  77.                         .setCurrentItem(position)
  78.                         .setShowDeleteButton(false)
  79.                         .start(MainActivity.this);
  80.             }
  81.  
  82.             @Override
  83.             public void onItemAddClick() {
  84.                 PhotoPicker.builder()
  85.                         .setPhotoCount(mPictureAdapter.MAX)
  86.                         .setGridColumnCount(3)
  87.                         //.setSelected(selPhotosPath)
  88.                         .start(MainActivity.this, Globals.CHOOSE_PIC_REQUEST_CODE);
  89.             }
  90.         });
  91.     }
  92.  
  93.     @Override
  94.     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  95.         super.onActivityResult(requestCode, resultCode, data);
  96.  
  97.         Log.w(TAG, "{onActivityResult}resultCode="+resultCode);
  98.         Log.w(TAG, "{onActivityResult}requestCode="+requestCode);
  99.         if (resultCode == Activity.RESULT_OK) {
  100.             //选择照片
  101.             if(requestCode == Globals.CHOOSE_PIC_REQUEST_CODE){
  102.  
  103.                 if (data != null) {
  104.                     selPhotosPath = data.getStringArrayListExtra(PhotoPicker.KEY_SELECTED_PHOTOS);
  105.                 }
  106.                 if (selPhotosPath != null) {
  107.  
  108.                     //下面的代码主要用于这样一个场景，就是注释了.setSelected(selPhotosPath)之后，还想要保证选择的图片不重复
  109.                     /*for(String path : selPhotosPath){
  110.                         Log.w(TAG,"path="+path);///storage/emulated/0/tempHxzk/IMG_1498034535796.jpg
  111.                         boolean existThisPic = false;
  112.                         for(int i=0;i<mPictureBeansList.size();i++){
  113.                             if(path.equals(mPictureBeansList.get(i).getPicPath())){
  114.                                 //如果新选择的图片集合中存在之前选中的图片，那么跳过去
  115.                                 existThisPic = true;
  116.                                 break;
  117.                             }
  118.                         }
  119.                         if(! existThisPic){
  120.                             PictureBean pictureBean = new PictureBean();
  121.                             pictureBean.setPicPath(path);
  122.                             pictureBean.setPicName(getFileName(path));
  123.                             //去掉总数目的限制，这里通过增大MAX的数字来实现
  124.                             if (mPictureBeansList.size() < mPictureAdapter.MAX) {
  125.                                 mPictureBeansList.add(pictureBean);
  126.                             } else {
  127.                                 Toast.makeText(MainActivity.this, "最多可以选择" + mPictureAdapter.MAX + "张图片", Toast.LENGTH_SHORT).show();
  128.                                 break;
  129.                             }
  130.                         }
  131.                     }*/
  132.  
  133.                     //是常规操作，和上面的代码不可共存
  134.                     for (String path : selPhotosPath) {
  135.                         PictureBean pictureBean = new PictureBean();
  136.                         pictureBean.setPicPath(path);
  137.                         pictureBean.setPicName(Globals.getFileName(path));
  138.                         //去掉总数目的限制，这里通过增大MAX的数字来实现
  139.                         if (mPictureBeansList.size() < mPictureAdapter.MAX) {
  140.                             mPictureBeansList.add(pictureBean);
  141.                         } else {
  142.                             Toast.makeText(MainActivity.this, "最多可以选择" + mPictureAdapter.MAX + "张图片", Toast.LENGTH_SHORT).show();
  143.                             break;
  144.                         }
  145.                     }
  146.                     mPictureAdapter.notifyDataSetChanged();
  147.                 }
  148.             }
  149.         }
  150.     }
  151. }

混淆配置

  1. # PhotoPicker混淆
  2. # Glide
  3. -keep public class * implements com.bumptech.glide.module.GlideModule
  4. -keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
  5.     **[] $VALUES;
  6.     public *;
  7. }
  8. # support-v7-appcompat
  9. -keep public class android.support.v7.widget.** { *; }
  10. -keep public class android.support.v7.internal.widget.** { *; }
  11. -keep public class android.support.v7.internal.view.menu.** { *; }
  12. -keep public class * extends android.support.v4.view.ActionProvider {
  13.     public <init>(android.content.Context);
  14. }
  15. # support-design
  16. -dontwarn android.support.design.**
  17. -keep class android.support.design.** { *; }
  18. -keep interface android.support.design.** { *; }
  19. -keep public class android.support.design.R$* { *; }

参考资料

donglua/PhotoPicker

项目demo下载地址

https://github.com/haiyuKing/PhotoPickerNewDemo

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