Android 应用程序：当应用程序处于后台操作时，如何在主屏幕上获取触摸事件

问题描述

使用 WindowManager，我像 Facebook Messenger 一样在主屏幕上制作应用程序 floaintView。

MotionEvent 允许移动浮动视图。 我想设置 WindowManager Flag 并为 Floating 以外的屏幕获取触摸事件，但它不起作用...

当我触摸浮动视图时，它运行良好。通过调用 OnTouchListener,ACTION_DOWN ACTION_UP,

当我在窗口（主屏幕）外触摸时，我希望它在做其他工作（触摸其他应用程序）和调用侦听器时都能很好地工作 请任何人指导我如何在我的应用程序中获取触摸事件，以便我可以完成一些任务。 我使用了三个 all 标志 FLAG_WATCH_OUTSIDE_TOUCH FLAG_NOT_TOUCH_MODAL
FLAG_NOT_FOCUSABLE

1. FLAG_NOT_FOCUSABLE |FLAG_NOT_TOUCH_MODAL
   在主屏幕上，它会触摸窗口的其余部分，但无法调用 OnClickListener 的触摸。

2. FLAG_WATCH_OUTSIDE_TOUCH 浮动视图以外的触摸被阻止。

   @SuppressLint("ClickableViewAccessibility") 覆盖乐趣 onCreate() { super.onCreate() if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) startMyOwnForeground() else startForeground( 1、 通知（） )

    //Inflate the floating view layout we created
    mFloatingView = LayoutInflater.from(this).inflate(R.layout.test,null)
   
    val LAYOUT_FLAG: Int
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
   
    } else {
        LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_PHONE
   
    }
   
    params = WindowManager.LayoutParams(
        WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT,LAYOUT_FLAG,WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE or  WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL or WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,PixelFormat.TRANSLUCENT
    )
   
    //Specify the view position
    params!!.gravity =
        Gravity.TOP or Gravity.LEFT //Initially view will be added to top-left corner
    params!!.x = 0
    params!!.y = 100
   
    //Add the view to the window
    mWindowManager = getSystemService(WINDOW_SERVICE) as WindowManager
    mWindowManager!!.addView(mFloatingView,params)
   
    var test = mFloatingView!!.findViewById<RelativeLayout>(R.id.wrap_container)
    with(test) {
        setonTouchListener(object : View.OnTouchListener {
            private var initialX = 0
            private var initialY = 0
            private var initialTouchX = 0f
            private var initialTouchY = 0f
            override fun onTouch(v: View?,event: MotionEvent): Boolean {
                Log.d("aa","aa")
                when (event.action) {
                    MotionEvent.ACTION_DOWN -> {
                        Log.d("ACTION_DOWN","ACTION_DOWN")
                        //remember the initial position.
                        initialX = params!!.x
                        initialY = params!!.y
   
                        //get the touch location
                        initialTouchX = event.rawX
                        initialTouchY = event.rawY
   
                        return true
                    }
                    MotionEvent.ACTION_UP -> {
                        Log.d("ACTION_UP","ACTION_UP")
   
                        val Xdiff = (event.rawX - initialTouchX).toInt()
                        val Ydiff = (event.rawY - initialTouchY).toInt()
   
   
                        //The check for Xdiff <10 && YDiff< 10 because sometime elements moves a little while clicking.
                        //So that is click event.
                        if (Xdiff < 10 && Ydiff < 10) {
                            val intent = Intent(applicationContext,MainActivity::class.java)
                            intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
                            intent.putExtra("fromwhere","ser")
                            startActivity(intent)
                        }
                        return true
                    }
                    MotionEvent.ACTION_MOVE -> {
   
                        Log.d("ACTION_MOVE","ACTION_MOVE")
                        //Calculate the X and Y coordinates of the view.
                        params!!.x = initialX + (event.rawX - initialTouchX).toInt()
                        params!!.y = initialY + (event.rawY - initialTouchY).toInt()
   
   
                        //Update the layout with new X & Y coordinate
                        mWindowManager!!.updateViewLayout(mFloatingView,params)
                        return true
                    }
                    MotionEvent.ACTION_OUTSIDE -> {
   
                        Log.d("ACTION_OUTSIDE","ACTION_OUTSIDE")
                        //Calculate the X and Y coordinates of the view.
                        initialX = params!!.x
                        initialY = params!!.y
   
                        //get the touch location
                        initialTouchX = event.rawX
                        initialTouchY = event.rawY
   
                        return true
                    }
                }
                return false
            }
        })
    }
   

   }

'''

解决方法

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