我试图创建一个总是在顶部按钮/点击图像 它一直在所有的窗口上面。

证明 概念是

智能任务栏(在AppBrain上) 这里是V1.4.0侧边栏样式的SWKey -按钮救星(在xda-developers上)

我已经成功了,现在有一个运行的服务。服务 在屏幕左上角一直显示一些文本 用户可以自由地与其他应用程序进行正常的交互。

我 ViewGroup的子类,并将它添加到根窗口管理器 国旗TYPE_SYSTEM_OVERLAY。现在我想添加一个按钮/可点击的图像 在这个文本的地方,它可以接收自己的触摸事件。我 试着重写整个ViewGroup的“onTouchEvent”,但它做到了 没有收到任何事件。

如何只能在某些部分接收事件 我总是在顶部的视图组?请建议。

public class HUD extends Service {
    HUDView mView;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        Toast.makeText(getBaseContext(),"onCreate", Toast.LENGTH_LONG).show();
        mView = new HUDView(this);
        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                0,
//              WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
//                      | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
                PixelFormat.TRANSLUCENT);
        params.gravity = Gravity.RIGHT | Gravity.TOP;
        params.setTitle("Load Average");
        WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
        wm.addView(mView, params);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Toast.makeText(getBaseContext(),"onDestroy", Toast.LENGTH_LONG).show();
        if(mView != null)
        {
            ((WindowManager) getSystemService(WINDOW_SERVICE)).removeView(mView);
            mView = null;
        }
    }
}

class HUDView extends ViewGroup {
    private Paint mLoadPaint;

    public HUDView(Context context) {
        super(context);
        Toast.makeText(getContext(),"HUDView", Toast.LENGTH_LONG).show();

        mLoadPaint = new Paint();
        mLoadPaint.setAntiAlias(true);
        mLoadPaint.setTextSize(10);
        mLoadPaint.setARGB(255, 255, 0, 0);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.drawText("Hello World", 5, 15, mLoadPaint);
    }

    @Override
    protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) {
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        //return super.onTouchEvent(event);
        Toast.makeText(getContext(),"onTouchEvent", Toast.LENGTH_LONG).show();
        return true;
    }
}

当前回答

这是一个老问题,但最近Android支持泡泡。泡泡很快就会推出,但目前开发者可以开始使用它们。它们被设计为使用SYSTEM_ALERT_WINDOW的替代方案。Facebook Messenger和MusiXMatch等应用程序使用了相同的概念。

气泡是通过通知API创建的,您可以正常发送通知。如果你想让它冒泡,你需要附加一些额外的数据。有关bubble的更多信息,您可以访问官方的Android开发者指南。

其他回答

TYPE_SYSTEM_OVERLAY常量自API级别26起已弃用。 使用TYPE_APPLICATION_OVERLAY代替。

对于Android 8及以上版本的用户:

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
    } else {
        LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_PHONE;
    }

试试这个。在ICS中工作正常。 如果您想停止服务,只需单击状态栏中生成的通知。

 public class HUD extends Service
 {
    protected boolean foreground = false;
    protected boolean cancelNotification = false;
    private Notification notification;
    private View myView;
    protected int id = 0;
    private WindowManager wm;
    private WindowManager.LayoutParams params;
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
    @Override
    public void onCreate() {
        super.onCreate();
       // System.exit(0);
        Toast.makeText(getBaseContext(),"onCreate", Toast.LENGTH_SHORT).show();
        params = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                        | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
        params.gravity=Gravity.TOP|Gravity.LEFT;
    wm = (WindowManager) getSystemService(WINDOW_SERVICE);
    inflateview();
    foregroundNotification(1);
    //moveToForeground(1,n,true);
    }     
   @Override
    public void onDestroy() {
        super.onDestroy();
        ((NotificationManager) getSystemService(NOTIFICATION_SERVICE)).cancel(0);
        Toast.makeText(getBaseContext(),"onDestroy", Toast.LENGTH_SHORT).show();
        if(myView != null)
        {
            ((WindowManager) getSystemService(WINDOW_SERVICE)).removeView(myView);
            myView = null;
        }
    }
    protected Notification foregroundNotification(int notificationId) 
   {    
    notification = new Notification(R.drawable.ic_launcher, "my Notification", System.currentTimeMillis());    
        notification.flags = notification.flags | Notification.FLAG_ONGOING_EVENT | Notification.FLAG_ONLY_ALERT_ONCE;   
        notification.setLatestEventInfo(this, "my Notification", "my Notification", notificationIntent());          
        ((NotificationManager) getSystemService(NOTIFICATION_SERVICE)).notify(id, notification);            
        return notification;
    }
    private PendingIntent notificationIntent() {
        Intent intent = new Intent(this, stopservice.class);    
        PendingIntent pending = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);    
        return pending;
    }
    public void inflateview()
    {
         LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
            myView = inflater.inflate(R.layout.activity_button, null);
            myView.setOnTouchListener(new OnTouchListener() {
               @Override
               public boolean onTouch(View v, MotionEvent event) {
                   Toast.makeText(getBaseContext(),"onToasttt", Toast.LENGTH_SHORT).show();
                   return false;
               }
             });
            // Add layout to window manager
            wm.addView(myView, params); 
    }
}

更新

样品在这里

要创建一个覆盖视图,在设置LayoutParams时不要将类型设置为TYPE_SYSTEM_OVERLAY。

Instead set it to TYPE_PHONE.

Use the following flags:

FLAG_NOT_TOUCH_MODAL

FLAG_WATCH_OUTSIDE_TOUCH

试试我的代码,至少它给了你一个字符串作为覆盖,你可以很好地用一个按钮或图像替换它。你不会相信这是我的第一个安卓应用,哈哈。无论如何,如果你比我更有经验的android应用程序,请尝试

在“new WindowManager”中更改参数2和3。LayoutParams” 尝试一些不同的事件方法

它使用权限“android.permission”。SYSTEM_ALERT_WINDOW"关于此链接的完整教程:http://androidsrc.net/facebook-chat-like-floating-chat-heads/

这里有一些简单的解决方案, 您所需要做的就是像在列表适配器上做的那样膨胀XML布局, 只是做XML布局来膨胀它。 以下是您所需要的所有代码。

 public class HUD extends Service {
    View mView;

    LayoutInflater inflate;
    TextView t;
    Button b;

    @Override
    public void onCreate() {
        super.onCreate();   

        Toast.makeText(getBaseContext(),"onCreate", Toast.LENGTH_LONG).show();


        WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);

        Display display = wm.getDefaultDisplay();  get phone display size
        int width = display.getWidth();  // deprecated - get phone display width
        int height = display.getHeight(); // deprecated - get phone display height 


        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                width, 
                height,
                WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                |WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                |WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
                 PixelFormat.TRANSLUCENT);


        params.gravity = Gravity.LEFT | Gravity.CENTER;
        params.setTitle("Load Average");

        inflate = (LayoutInflater) getBaseContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        mView = inflate.inflate(R.layout.canvas, null);

        b =  (Button) mView.findViewById(R.id.button1);
        t = (TextView) mView.findViewById(R.id.textView1);
        b.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            t.setText("yes you click me ");
        }
       });

        wm.addView(mView, params);

        }



    @Override
    public IBinder onBind(Intent arg0) {
        // TODO Auto-generated method stub
        return null;
    }

}