我正在尝试创建一个始终在屏幕上的按钮.
按钮应该是可点击的,按下按钮下面的任何内容都不应该被激活.
在按钮后面运行的活动或主屏幕应该仍然有效,这意味着用户仍然可以与主屏幕或应用程序进行交互.
软键按钮仍然可以工作:家庭,后面,菜单等
以下代码执行#1和#2,但软键按钮不再起作用:
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT);
将其更改为此选项会禁用叠加层,但#2和#3会起作用:
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY, WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
最后在这个例子中,点击了叠加层和它后面的内容:
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY, WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
如何更改此设置以使叠加层可以点击,直接在其下面是不可点击的,并且叠加层之外的所有内容都可以使用,包括主页按钮？
执行所有这些的示例应用程序是Super Manager.
更新:我发现以下内容允许使用主页按钮,但仍然不是其他按钮:
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT |
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH
,
你不能将OR窗口类型放在一起.您将创建一些随机的其他类型.说实话,你使用的窗口类型实际上不是供应用程序使用的(这就是为什么它们中包含"system"一词).
"软键按钮不再起作用"是什么意思？如果这是一个大问题(我想知道执行此操作的代码),就不应该停止工作.其他键被传递到当前的关键焦点; 如果你不想专注,请使用FLAG_NOT_FOCUSABLE.
每个标志的文档应该非常清楚它的作用,所以选择做你想做的标志. FLAG_NOT_FOCUSABLE因为你不想参加关键事件. FLAG_NOT_TOUCH_MODAL因为您不想阻止窗口外的触摸事件.你没有说你想知道你窗外的印刷机,所以没有理由使用FLAG_WATCH_OUTSIDE_TOUCH.
我看到pcm2a没有发布一个有效的解决方案,所以我不妨为他做.
注意:虽然我提出了一种可行的解决方案,但就Android架构设计而言,使用这些方法并非100%正确.我建议向Android开发团队的某些人询问更多信息(请在此发布他们的答案供我们所有人查看).
服务
package com.vidmind.test.service.video;
import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.WindowManager;
import android.widget.LinearLayout;
import android.widget.VideoView;
public class TestVideoService extends Service {
/** Command to the service to display a message */
public static final int MSG_PLAY_VIDEO = 1;
public static final int MSG_VIDEO_LOOP_MODE = 2;
/** Bundle Strings */
public static final String KEY_VIDEO_URL = "KEY_VIDEO_URL";
public static final String KEY_VIDEO_LOOP_MODE = "KEY_VIDEO_LOOP_MODE";
// Binder given to clients
private static final String TAG = "TestVideoService";
final Messenger mMessenger = new Messenger(new IncomingHandler());
private LinearLayout mOverlay;
private VideoView mVideoView;
private boolean mVideoLoop = true;
/** ****************** Handler implementation class ****************** **/
/**
* Handler of incoming messages from clients.
*/
class IncomingHandler extends Handler {
@Override
public void handleMessage(Message msg) {
Bundle bundle;
switch (msg.what) {
case MSG_PLAY_VIDEO:
bundle = msg.getData();
String url = bundle.getString(KEY_VIDEO_URL);
play(url);
break;
case MSG_VIDEO_LOOP_MODE:
bundle = msg.getData();
boolean looping = bundle.getBoolean(KEY_VIDEO_LOOP_MODE);
setVideoLoop(looping);
break;
default:
super.handleMessage(msg);
}
}
}
/** ****************************************************************** **/
@Override
public IBinder onBind(Intent intent) {
return mMessenger.getBinder();
}
@Override
public void onCreate() {
super.onCreate();
Log.d(TAG, "Service has started");
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "Serice destroyed");
// Remove view from WindowManager
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.removeView(mOverlay);
mOverlay = null;
mVideoView = null;
}
/** ****************** Private Functions ****************** **/
/**
* Set video loop mode
* @param value
*/
private void setVideoLoop(boolean value) {
mVideoLoop = value;
}
/**
* Start playing the movie
* @param url
* @returns success/failure
*/
private boolean play(String url) {
boolean isSuccess = false;
if (mOverlay != null && mVideoView.isPlaying()) {
Log.w(TAG, "Cannot recreate video overlay");
return isSuccess;
}
// Create overlay video
createOverlay(mOverlay != null);
if (!mVideoView.isPlaying()) {
mVideoView.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mp.setLooping(mVideoLoop);
}
});
mVideoView.setVideoURI(Uri.parse(url));
mVideoView.requestFocus();
mVideoView.start();
isSuccess = true;
}
return isSuccess;
}
/**
* Create video overlay
*
* @param isCreated
*/
private void createOverlay(boolean isCreated) {
if (isCreated) return;
// Create System overlay video
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.FILL_PARENT, 150,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.BOTTOM;
LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
mOverlay = (LinearLayout) inflater.inflate(R.layout.main, null);
mVideoView = (VideoView) mOverlay.findViewById(R.id.video_player);
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mOverlay, params);
}
}
layout.main
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