【Android实战】Android沉浸式状态栏实现（下）

之前的Android沉浸式状态栏实现并没有考虑软键盘的影响，接下来的内容将会针对这个问题给出解决方式，先看一下效果图

这个是一个留言板的效果图：

即弹出软键盘的时候并不会导致整个布局上移。

详细怎样实现？依照下面步骤进行设置：

1、布局文件里声明例如以下

 <activity
            android:name="com.storm.durian.activity.LeaveMessageDetailsActivity"
            android:screenOrientation="portrait"
            />

2、这里重写了RelativeLayout。并重写了fitSystemWindows，这个是最最关键的。

/**
 * 自适应布局
 */
public class FitsSystemWindowsLayout extends RelativeLayout {
    private static final String TAG = FitsSystemWindowsLayout.class.getSimpleName();
    private SoftKeyBoardStateListener softKeyBoardStateListener;

    public FitsSystemWindowsLayout(Context context) {
        super(context);
    }

    public FitsSystemWindowsLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public FitsSystemWindowsLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) {

        dispatchListenerLow(heightMeasureSpec);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    /**
     * 处理低版本号键盘弹出
     *
     * @param heightMeasureSpec 高度
     */
    private void dispatchListenerLow(int heightMeasureSpec) {
        if (softKeyBoardStateListener == null || Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            return;
        }
        int oldSpec = getMeasuredHeight();

        if (oldSpec <= 0) {
            return;
        }
        int newSpec = MeasureSpec.getSize(heightMeasureSpec);
        int offset = oldSpec - newSpec;
        if (offset > 100) {
            LogHelper.i(TAG, "键盘打开");
            softKeyBoardStateListener.onSoftKeyBoardStateChange(true);
        } else if (offset < -100) {
            LogHelper.i(TAG, "键盘关闭");
            softKeyBoardStateListener.onSoftKeyBoardStateChange(false);
        }
    }

    @Override
    protected boolean fitSystemWindows(Rect insets) {
        dispatchListener(insets);
        insets.top = 0;
        return super.fitSystemWindows(insets);
    }

    /**
     * 分发监听
     *
     * @param insets
     */
    private void dispatchListener(Rect insets) {
        if (softKeyBoardStateListener == null || android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            return;
        }
        if (insets.top != 0 && insets.bottom != 0) {
            LogHelper.i(TAG, "键盘打开");
            softKeyBoardStateListener.onSoftKeyBoardStateChange(true);
        } else {
            LogHelper.i(TAG, "键盘关闭");
            softKeyBoardStateListener.onSoftKeyBoardStateChange(false);
        }

    }

    /**
     * 设置软键盘监听事件
     *
     * @param softKeyBoardStateListener
     */
    public void setSoftKeyBoardListener(SoftKeyBoardStateListener softKeyBoardStateListener) {
        this.softKeyBoardStateListener = softKeyBoardStateListener;
    }

    public interface SoftKeyBoardStateListener {

        public void onSoftKeyBoardStateChange(boolean isOpen);

    }
}

尽管以上布局也提供了键盘打开或者关闭的回调，可是在某些低版本号手机上还是支持的不太好，须要这个回调的能够将此回调作为当中一个方法。可是不要过分依赖

3、布局文件

使用com.storm.durian.view.FitsSystemWindowsLayout包裹整个布局，并设置android:fitsSystemWindows=“true”

<?xml version="1.0" encoding="utf-8"?

>
<com.storm.durian.view.FitsSystemWindowsLayout android:id="@+id/leave_message_layout"
                                               xmlns:android="http://schemas.android.com/apk/res/android"
                                               android:layout_width="match_parent"
                                               android:layout_height="match_parent"
                                               android:background="@color/ececec"
                                               android:fitsSystemWindows="true">

    <include
        android:id="@+id/leave_message_title"
        layout="@layout/common_back"/>

    <LinearLayout
        android:id="@+id/ll_leave_message_input"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:background="@drawable/leave_message_bottom_bg"
        android:orientation="horizontal">

        <EditText
            android:id="@+id/et_leave_message"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="3"
            android:background="@drawable/et_leave_message_bg"
            android:hint="亲，给我留言我会回复你哒~"
            android:maxLines="4"
            android:textColor="@color/_3e363d"
            android:textSize="@dimen/text_size_small"/>

        <Button
            android:id="@+id/btn_leave_message_send"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:layout_weight="1"
            android:background="@drawable/btn_leave_message_send_selector"
            android:singleLine="true"
            android:text="发送"
            android:textColor="@color/_3e363d"
            android:textSize="@dimen/text_size_middle"/>
    </LinearLayout>

    <ListView
        android:id="@+id/lv_leave_message"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@id/ll_leave_message_input"
        android:layout_below="@id/leave_message_title"
        android:cacheColorHint="#00000000"
        android:divider="@color/dbdbdb"
        android:dividerHeight="1dp"
        android:fadingEdge="none"/>

    <ViewStub
        android:id="@+id/activity_leave_message_loading_stub"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/leave_message_title"
        android:inflatedId="@+id/activity_leave_message_loading_subTree"
        android:layout="@layout/common_loading"/>

    <ViewStub
        android:id="@+id/leave_message_empty_stub"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/ll_leave_message_input"
        android:layout_below="@id/leave_message_title"
        android:inflatedId="@+id/leave_message_empty_subTree"
        android:layout="@layout/common_tips_layout"/>

    <ViewStub
        android:id="@+id/leave_message_net_error_stub"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/leave_message_title"
        android:inflatedId="@+id/leave_message_net_error_subTree"
        android:layout="@layout/common_net_error_layout"/>

</com.storm.durian.view.FitsSystemWindowsLayout>

4、Activity中处理

设置setImmerseLayout(findViewById(R.id.leave_message_title));

  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_leave_detail_message);
        setImmerseLayout(findViewById(R.id.leave_message_title));
        logic = LeaveMessageLogic.getInstance(getApplicationContext());
        mHandler = new MyHandler(this);
        initView();
    }

再看BaseActivity中的setImmerseLayout方法

版本号要求仍然是4.4以上

  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        isStart = true;
        ShareSDK.initSDK(this);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            //透明状态栏
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            //透明导航栏
//            getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
            statusBarHeight = ScreenUtil.getStatusBarHeight(this);
        }
        ScreenManager.getScreenManager().pushActivity(this);
    }

   protected void setImmerseLayout(View view) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                Window window = getWindow();
                window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,
                WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
               // window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            int statusBarHeight = ScreenUtil.getStatusBarHeight(this.getBaseContext());
            view.setPadding(0, statusBarHeight, 0, 0);
        }
    }

OK。须要的朋友们能够自己尝试一下！

有空的话会将这个沉浸式的留言板的功能写一下分享出来！