Fragment利用ViewPager实现左右滑动--第三方开源--SlidingTabLayout和SlidingTabStrip实现
MainActivity:
- package com.zzw.fragmentteb;
- import java.util.ArrayList;
- import android.graphics.Color;
- import android.os.Bundle;
- import android.support.v4.app.Fragment;
- import android.support.v4.app.FragmentActivity;
- import android.support.v4.app.FragmentManager;
- import android.support.v4.app.FragmentPagerAdapter;
- import android.support.v4.view.ViewPager;
- import android.view.WindowManager;
- public class MainActivity extends FragmentActivity {
- ArrayList<Fragment> list;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- toggleFullscreen(true);// 设置全屏
- list = new ArrayList<Fragment>();
- list.add(setFragmentData("我是第一个Fragment", Color.RED));
- list.add(setFragmentData("我是第二个Fragment", Color.GRAY));
- list.add(setFragmentData("我是第三个Fragment", Color.GREEN));
- list.add(setFragmentData("我是第四个Fragment", Color.BLUE));
- list.add(setFragmentData("我是第五个Fragment", Color.YELLOW));
- ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
- viewPager.setAdapter(new MyAdapter(this.getSupportFragmentManager()));
- // 设置tab栏
- SlidingTabLayout mSlidingTabLayout = (SlidingTabLayout) findViewById(R.id.sliding);
- mSlidingTabLayout.setViewPager(viewPager);
- }
- // 设置全屏
- public void toggleFullscreen(boolean fullScreen) {
- // fullScreen为true时全屏,否则相反
- WindowManager.LayoutParams attrs = getWindow().getAttributes();
- if (fullScreen) {
- attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
- } else {
- attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN;
- }
- getWindow().setAttributes(attrs);
- }
- // 设置要传递给Fragment的参数
- private Fragment setFragmentData(String name, int color) {
- Fragment f = new MyFragment();
- Bundle b = new Bundle();
- b.putString("NAME", name);
- b.putInt("COLOR", color);
- f.setArguments(b);
- return f;
- }
- private class MyAdapter extends FragmentPagerAdapter {
- public MyAdapter(FragmentManager fm) {
- super(fm);
- }
- @Override
- public Fragment getItem(int position) {
- return list.get(position);
- }
- @Override
- public int getCount() {
- return list.size();
- }
- // tab标题
- @Override
- public CharSequence getPageTitle(int position) {
- return position + "";
- }
- }
- }
MyFragment:
- package com.zzw.fragmentteb;
- import android.os.Bundle;
- import android.support.v4.app.Fragment;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.TextView;
- public class MyFragment extends Fragment {
- private static final String TAG = "TestFragment";
- String name;
- int color;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- Bundle b = this.getArguments();
- name = b.getString("NAME");
- color = b.getInt("COLOR");
- }
- @Override
- public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
- View view = inflater.inflate(android.R.layout.simple_list_item_1, null);
- view.setBackgroundColor(color);
- return view;
- }
- @Override
- public void onViewCreated(View view, Bundle savedInstanceState) {
- TextView text1 = (TextView) view.findViewById(android.R.id.text1);
- text1.setText(name);
- }
- }
SlidingTabLayout.java:
直接导入包里面:
- package com.zzw.fragmentteb;
- import android.content.Context;
- import android.graphics.Typeface;
- import android.os.Build;
- import android.support.v4.view.PagerAdapter;
- import android.support.v4.view.ViewPager;
- import android.util.AttributeSet;
- import android.util.TypedValue;
- import android.view.Gravity;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.widget.HorizontalScrollView;
- import android.widget.LinearLayout;
- import android.widget.TextView;
- /**
- * To be used with ViewPager to provide a tab indicator component which give
- * constant feedback as to the user's scroll progress.
- * <p>
- * To use the component, simply add it to your view hierarchy. Then in your
- * {@link android.app.Activity} or {@link android.support.v4.app.Fragment} call
- * {@link #setViewPager(ViewPager)} providing it the ViewPager this layout is
- * being used for.
- * <p>
- * The colors can be customized in two ways. The first and simplest is to
- * provide an array of colors via {@link #setSelectedIndicatorColors(int...)}
- * and {@link #setDividerColors(int...)}. The alternative is via the
- * {@link TabColorizer} interface which provides you complete control over which
- * color is used for any individual position.
- * <p>
- * The views used as tabs can be customized by calling
- * {@link #setCustomTabView(int, int)}, providing the layout ID of your custom
- * layout.
- */
- public class SlidingTabLayout extends HorizontalScrollView {
- /**
- * Allows complete control over the colors drawn in the tab layout. Set with
- * {@link #setCustomTabColorizer(TabColorizer)}.
- */
- public interface TabColorizer {
- /**
- * @return return the color of the indicator used when {@code position}
- * is selected.
- */
- int getIndicatorColor(int position);
- /**
- * @return return the color of the divider drawn to the right of
- * {@code position}.
- */
- int getDividerColor(int position);
- }
- private static final int TITLE_OFFSET_DIPS = 24;
- private static final int TAB_VIEW_PADDING_DIPS = 16;
- private static final int TAB_VIEW_TEXT_SIZE_SP = 12;
- private int mTitleOffset;
- private int mTabViewLayoutId;
- private int mTabViewTextViewId;
- private ViewPager mViewPager;
- private ViewPager.OnPageChangeListener mViewPagerPageChangeListener;
- private final SlidingTabStrip mTabStrip;
- public SlidingTabLayout(Context context) {
- this(context, null);
- }
- public SlidingTabLayout(Context context, AttributeSet attrs) {
- this(context, attrs, 0);
- }
- public SlidingTabLayout(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
- // Disable the Scroll Bar
- setHorizontalScrollBarEnabled(false);
- // Make sure that the Tab Strips fills this View
- setFillViewport(true);
- mTitleOffset = (int) (TITLE_OFFSET_DIPS * getResources().getDisplayMetrics().density);
- mTabStrip = new SlidingTabStrip(context);
- addView(mTabStrip, LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
- }
- /**
- * Set the custom {@link TabColorizer} to be used.
- *
- * If you only require simple custmisation then you can use
- * {@link #setSelectedIndicatorColors(int...)} and
- * {@link #setDividerColors(int...)} to achieve similar effects.
- */
- public void setCustomTabColorizer(TabColorizer tabColorizer) {
- mTabStrip.setCustomTabColorizer(tabColorizer);
- }
- /**
- * Sets the colors to be used for indicating the selected tab. These colors
- * are treated as a circular array. Providing one color will mean that all
- * tabs are indicated with the same color.
- */
- public void setSelectedIndicatorColors(int... colors) {
- mTabStrip.setSelectedIndicatorColors(colors);
- }
- /**
- * Sets the colors to be used for tab dividers. These colors are treated as
- * a circular array. Providing one color will mean that all tabs are
- * indicated with the same color.
- */
- public void setDividerColors(int... colors) {
- mTabStrip.setDividerColors(colors);
- }
- /**
- * Set the {@link ViewPager.OnPageChangeListener}. When using
- * {@link SlidingTabLayout} you are required to set any
- * {@link ViewPager.OnPageChangeListener} through this method. This is so
- * that the layout can update it's scroll position correctly.
- *
- * @see ViewPager#setOnPageChangeListener(ViewPager.OnPageChangeListener)
- */
- public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
- mViewPagerPageChangeListener = listener;
- }
- /**
- * Set the custom layout to be inflated for the tab views.
- *
- * @param layoutResId
- * Layout id to be inflated
- * @param textViewId
- * id of the {@link TextView} in the inflated view
- */
- public void setCustomTabView(int layoutResId, int textViewId) {
- mTabViewLayoutId = layoutResId;
- mTabViewTextViewId = textViewId;
- }
- /**
- * Sets the associated view pager. Note that the assumption here is that the
- * pager content (number of tabs and tab titles) does not change after this
- * call has been made.
- */
- public void setViewPager(ViewPager viewPager) {
- mTabStrip.removeAllViews();
- mViewPager = viewPager;
- if (viewPager != null) {
- viewPager.setOnPageChangeListener(new InternalViewPagerListener());
- populateTabStrip();
- }
- }
- /**
- * Create a default view to be used for tabs. This is called if a custom tab
- * view is not set via {@link #setCustomTabView(int, int)}.
- */
- protected TextView createDefaultTabView(Context context) {
- TextView textView = new TextView(context);
- textView.setGravity(Gravity.CENTER);
- textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, TAB_VIEW_TEXT_SIZE_SP);
- textView.setTypeface(Typeface.DEFAULT_BOLD);
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
- // If we're running on Honeycomb or newer, then we can use the
- // Theme's
- // selectableItemBackground to ensure that the View has a pressed
- // state
- TypedValue outValue = new TypedValue();
- getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground, outValue, true);
- textView.setBackgroundResource(outValue.resourceId);
- }
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
- // If we're running on ICS or newer, enable all-caps to match the
- // Action Bar tab style
- textView.setAllCaps(true);
- }
- int padding = (int) (TAB_VIEW_PADDING_DIPS * getResources().getDisplayMetrics().density);
- textView.setPadding(padding, padding, padding, padding);
- return textView;
- }
- private void populateTabStrip() {
- final PagerAdapter adapter = mViewPager.getAdapter();
- final View.OnClickListener tabClickListener = new TabClickListener();
- for (int i = 0; i < adapter.getCount(); i++) {
- View tabView = null;
- TextView tabTitleView = null;
- if (mTabViewLayoutId != 0) {
- // If there is a custom tab view layout id set, try and inflate
- // it
- tabView = LayoutInflater.from(getContext()).inflate(mTabViewLayoutId, mTabStrip, false);
- tabTitleView = (TextView) tabView.findViewById(mTabViewTextViewId);
- }
- if (tabView == null) {
- tabView = createDefaultTabView(getContext());
- }
- if (tabTitleView == null && TextView.class.isInstance(tabView)) {
- tabTitleView = (TextView) tabView;
- }
- tabTitleView.setText(adapter.getPageTitle(i));
- tabView.setOnClickListener(tabClickListener);
- //将tab标题栏平均分配
- LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1.0f);
- tabView.setLayoutParams(layoutParams);
- mTabStrip.addView(tabView);
- }
- }
- @Override
- protected void onAttachedToWindow() {
- super.onAttachedToWindow();
- if (mViewPager != null) {
- scrollToTab(mViewPager.getCurrentItem(), 0);
- }
- }
- private void scrollToTab(int tabIndex, int positionOffset) {
- final int tabStripChildCount = mTabStrip.getChildCount();
- if (tabStripChildCount == 0 || tabIndex < 0 || tabIndex >= tabStripChildCount) {
- return;
- }
- View selectedChild = mTabStrip.getChildAt(tabIndex);
- if (selectedChild != null) {
- int targetScrollX = selectedChild.getLeft() + positionOffset;
- if (tabIndex > 0 || positionOffset > 0) {
- // If we're not at the first child and are mid-scroll, make sure
- // we obey the offset
- targetScrollX -= mTitleOffset;
- }
- scrollTo(targetScrollX, 0);
- }
- }
- private class InternalViewPagerListener implements ViewPager.OnPageChangeListener {
- private int mScrollState;
- @Override
- public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
- int tabStripChildCount = mTabStrip.getChildCount();
- if ((tabStripChildCount == 0) || (position < 0) || (position >= tabStripChildCount)) {
- return;
- }
- mTabStrip.onViewPagerPageChanged(position, positionOffset);
- View selectedTitle = mTabStrip.getChildAt(position);
- int extraOffset = (selectedTitle != null) ? (int) (positionOffset * selectedTitle.getWidth()) : 0;
- scrollToTab(position, extraOffset);
- if (mViewPagerPageChangeListener != null) {
- mViewPagerPageChangeListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
- }
- }
- @Override
- public void onPageScrollStateChanged(int state) {
- mScrollState = state;
- if (mViewPagerPageChangeListener != null) {
- mViewPagerPageChangeListener.onPageScrollStateChanged(state);
- }
- }
- @Override
- public void onPageSelected(int position) {
- if (mScrollState == ViewPager.SCROLL_STATE_IDLE) {
- mTabStrip.onViewPagerPageChanged(position, 0f);
- scrollToTab(position, 0);
- }
- if (mViewPagerPageChangeListener != null) {
- mViewPagerPageChangeListener.onPageSelected(position);
- }
- }
- }
- private class TabClickListener implements View.OnClickListener {
- @Override
- public void onClick(View v) {
- for (int i = 0; i < mTabStrip.getChildCount(); i++) {
- if (v == mTabStrip.getChildAt(i)) {
- mViewPager.setCurrentItem(i);
- return;
- }
- }
- }
- }
- }
SlidingTabStrip.java
直接导入包里
- package com.zzw.fragmentteb;
- import android.content.Context;
- import android.graphics.Canvas;
- import android.graphics.Color;
- import android.graphics.Paint;
- import android.util.AttributeSet;
- import android.util.TypedValue;
- import android.view.View;
- import android.widget.LinearLayout;
- class SlidingTabStrip extends LinearLayout {
- private static final int DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS = 2;
- private static final byte DEFAULT_BOTTOM_BORDER_COLOR_ALPHA = 0x26;
- private static final int SELECTED_INDICATOR_THICKNESS_DIPS = 8;
- private static final int DEFAULT_SELECTED_INDICATOR_COLOR = 0xFF33B5E5;
- private static final int DEFAULT_DIVIDER_THICKNESS_DIPS = 1;
- private static final byte DEFAULT_DIVIDER_COLOR_ALPHA = 0x20;
- private static final float DEFAULT_DIVIDER_HEIGHT = 0.5f;
- private final int mBottomBorderThickness;
- private final Paint mBottomBorderPaint;
- private final int mSelectedIndicatorThickness;
- private final Paint mSelectedIndicatorPaint;
- private final int mDefaultBottomBorderColor;
- private final Paint mDividerPaint;
- private final float mDividerHeight;
- private int mSelectedPosition;
- private float mSelectionOffset;
- private SlidingTabLayout.TabColorizer mCustomTabColorizer;
- private final SimpleTabColorizer mDefaultTabColorizer;
- SlidingTabStrip(Context context) {
- this(context, null);
- }
- SlidingTabStrip(Context context, AttributeSet attrs) {
- super(context, attrs);
- setWillNotDraw(false);
- final float density = getResources().getDisplayMetrics().density;
- TypedValue outValue = new TypedValue();
- // context.getTheme().resolveAttribute(R.attr.colorForeground, outValue,
- // true);
- final int themeForegroundColor = outValue.data;
- mDefaultBottomBorderColor = setColorAlpha(themeForegroundColor, DEFAULT_BOTTOM_BORDER_COLOR_ALPHA);
- mDefaultTabColorizer = new SimpleTabColorizer();
- mDefaultTabColorizer.setIndicatorColors(DEFAULT_SELECTED_INDICATOR_COLOR);
- mDefaultTabColorizer.setDividerColors(setColorAlpha(themeForegroundColor, DEFAULT_DIVIDER_COLOR_ALPHA));
- mBottomBorderThickness = (int) (DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS * density);
- mBottomBorderPaint = new Paint();
- mBottomBorderPaint.setColor(mDefaultBottomBorderColor);
- mSelectedIndicatorThickness = (int) (SELECTED_INDICATOR_THICKNESS_DIPS * density);
- mSelectedIndicatorPaint = new Paint();
- mDividerHeight = DEFAULT_DIVIDER_HEIGHT;
- mDividerPaint = new Paint();
- mDividerPaint.setStrokeWidth((int) (DEFAULT_DIVIDER_THICKNESS_DIPS * density));
- }
- void setCustomTabColorizer(SlidingTabLayout.TabColorizer customTabColorizer) {
- mCustomTabColorizer = customTabColorizer;
- invalidate();
- }
- void setSelectedIndicatorColors(int... colors) {
- // Make sure that the custom colorizer is removed
- mCustomTabColorizer = null;
- mDefaultTabColorizer.setIndicatorColors(colors);
- invalidate();
- }
- void setDividerColors(int... colors) {
- // Make sure that the custom colorizer is removed
- mCustomTabColorizer = null;
- mDefaultTabColorizer.setDividerColors(colors);
- invalidate();
- }
- void onViewPagerPageChanged(int position, float positionOffset) {
- mSelectedPosition = position;
- mSelectionOffset = positionOffset;
- invalidate();
- }
- @Override
- protected void onDraw(Canvas canvas) {
- final int height = getHeight();
- final int childCount = getChildCount();
- final int dividerHeightPx = (int) (Math.min(Math.max(0f, mDividerHeight), 1f) * height);
- final SlidingTabLayout.TabColorizer tabColorizer = mCustomTabColorizer != null ? mCustomTabColorizer
- : mDefaultTabColorizer;
- // Thick colored underline below the current selection
- if (childCount > 0) {
- View selectedTitle = getChildAt(mSelectedPosition);
- int left = selectedTitle.getLeft();
- int right = selectedTitle.getRight();
- int color = tabColorizer.getIndicatorColor(mSelectedPosition);
- if (mSelectionOffset > 0f && mSelectedPosition < (getChildCount() - 1)) {
- int nextColor = tabColorizer.getIndicatorColor(mSelectedPosition + 1);
- if (color != nextColor) {
- color = blendColors(nextColor, color, mSelectionOffset);
- }
- // Draw the selection partway between the tabs
- View nextTitle = getChildAt(mSelectedPosition + 1);
- left = (int) (mSelectionOffset * nextTitle.getLeft() + (1.0f - mSelectionOffset) * left);
- right = (int) (mSelectionOffset * nextTitle.getRight() + (1.0f - mSelectionOffset) * right);
- }
- mSelectedIndicatorPaint.setColor(color);
- canvas.drawRect(left, height - mSelectedIndicatorThickness, right, height, mSelectedIndicatorPaint);
- }
- // Thin underline along the entire bottom edge
- canvas.drawRect(0, height - mBottomBorderThickness, getWidth(), height, mBottomBorderPaint);
- // Vertical separators between the titles
- int separatorTop = (height - dividerHeightPx) / 2;
- for (int i = 0; i < childCount - 1; i++) {
- View child = getChildAt(i);
- mDividerPaint.setColor(tabColorizer.getDividerColor(i));
- canvas.drawLine(child.getRight(), separatorTop, child.getRight(), separatorTop + dividerHeightPx,
- mDividerPaint);
- }
- }
- /**
- * Set the alpha value of the {@code color} to be the given {@code alpha}
- * value.
- */
- private static int setColorAlpha(int color, byte alpha) {
- return Color.argb(alpha, Color.red(color), Color.green(color), Color.blue(color));
- }
- /**
- * Blend {@code color1} and {@code color2} using the given ratio.
- *
- * @param ratio
- * of which to blend. 1.0 will return {@code color1}, 0.5 will
- * give an even blend, 0.0 will return {@code color2}.
- */
- private static int blendColors(int color1, int color2, float ratio) {
- final float inverseRation = 1f - ratio;
- float r = (Color.red(color1) * ratio) + (Color.red(color2) * inverseRation);
- float g = (Color.green(color1) * ratio) + (Color.green(color2) * inverseRation);
- float b = (Color.blue(color1) * ratio) + (Color.blue(color2) * inverseRation);
- return Color.rgb((int) r, (int) g, (int) b);
- }
- private static class SimpleTabColorizer implements SlidingTabLayout.TabColorizer {
- private int[] mIndicatorColors;
- private int[] mDividerColors;
- @Override
- public final int getIndicatorColor(int position) {
- return mIndicatorColors[position % mIndicatorColors.length];
- }
- @Override
- public final int getDividerColor(int position) {
- return mDividerColors[position % mDividerColors.length];
- }
- void setIndicatorColors(int... colors) {
- mIndicatorColors = colors;
- }
- void setDividerColors(int... colors) {
- mDividerColors = colors;
- }
- }
- }
activity_main.xml:
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- tools:context="com.zzw.fragmentteb.MainActivity" >
- <!-- 在上方就在上面,在下方就在下面(tab栏) -->
- <com.zzw.fragmentteb.SlidingTabLayout
- android:id="@+id/sliding"
- android:layout_width="match_parent"
- android:layout_height="wrap_content" />
- <android.support.v4.view.ViewPager
- android:id="@+id/view_pager"
- android:layout_width="match_parent"
- android:layout_height="match_parent" />
- </RelativeLayout>
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