浮窗WindowManager view返回和Home按键事件监听
出于功能需求，需要在所有的view之上显示浮窗，于是需要在WindowManager的View上处理返回键的响应，
mFloatingWindowView = layoutInflater.inflate(R.layout.floating_window, null, false); mFloatingWindowLayoutParams = new WindowManager.LayoutParams();
// 设置window type
mUserConversationWindowParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
mUserConversationWindowParams.format = PixelFormat.TRANSLUCENT;// 设置图片格式，效果为背景透明
// 设置Window flag
mUserConversationWindowParams.flags =
//可使用FLAG_DISMISS_KEYGUARD选项直接解除非加锁的锁屏状态。此选项只用于*顶层的全屏幕窗口。
WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL //必须 设置窗口不拦截窗口范围之外事件
|WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH // 必须 设置在有FLAG_NOT_TOUCH_MODAL属性时，窗口之外事件发生时自己也获取事件
| WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
mWindowManager.addView(mFloatingWindowView, mFloatingWindowLayoutParams);
这里千万要注意不能用WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE，我就是死在这上面的，如果设置成FLAG_NOT_FOCUSABLE，死都收不到返回键的事件的!
import android.content.Context;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.widget.LinearLayout;
/**
* Created by KB-Shirlman on 4/26/2016.
*/
public class FloatingWindowView extends LinearLayout {
public FloatingWindowView(Context context) {
super(context);
}
public FloatingWindowView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public FloatingWindowView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK
|| event.getKeyCode() == KeyEvent.KEYCODE_SETTINGS) {
if(event.getAction()==KeyEvent.ACTION_DOWN){ //按键 按下和移开会有两个不同的事件所以需要区分
closecao(); //点击返回 要执行的方法
}
} return super.dispatchKeyEvent(event); } }
floating_window.xml
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<?xml version=“1.0” encoding=”utf-8″?>
<YOUR.PACKAGE.NAME.FloatingWindowView
xmlns:android=“http://schemas.android.com/apk/res/android”
android:layout_width=“fill_parent”
android:layout_height=“fill_parent”
android:orientation=“vertical”
android:weightSum=“1”>
</YOUR.PACKAGE.NAME.FloatingWindowView>
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下面附赠哪都能搜索的到的WidnowManager Home按键监听。
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private IntentFilter mHomeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
private BroadcastReceiver mHomeListenerReceiver = new BroadcastReceiver() {
final String SYSTEM_DIALOG_REASON_KEY = “reason”;
final String SYSTEM_DIALOG_REASON_HOME_KEY = “homekey”;
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)
&& reason != null && reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {
closeFloatingWindow();
}
}
};
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打开浮窗时调用：
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this.registerReceiver(mHomeListenerReceiver, mHomeFilter);
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关闭浮窗时调用：
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this.unregisterReceiver(mHomeListenerReceiver);
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