Question

我有一份安乐施会的申请,在某个阶段由 back接,一旦发生一些事件,它就接手,并出现在地下。

now I want something more complex. when my activity is in the background, show small image at the bottom of the screen (like a popup ad), no matter what application is running. is this possible? (it s not the case of writing application, and letting ads engine to insert ads into my application. I want kind of opposite, without any integration)

Answer 1

和Jan一样,你应当非常谨慎,因为如果得不到适当处理,它就能够很容易地使用户感到不快。这里是表明观点超支的一种方式。您需要电话的所有人明确准许您超期批准。然后,你可以从一个服务类别中发表意见。你需要记住正确处理这些许可。您需要明确表明以下允许:

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

由于这是一种危险的许可,使用者必须在环境中人工准许。然后,你可以与窗口经理合作,处理意见一致、规模和细节问题。例如:

windowManager = getSystemService(Context.WINDOW_SERVICE) as WindowManager
        params = WindowManager.LayoutParams(
                WindowManager.LayoutParams.MATCH_PARENT,
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_PHONE,
                WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
                PixelFormat.TRANSLUCENT)

        params.gravity = Gravity.BOTTOM
        if (view.windowToken != null) {
          try {
            windowManager!!.addView(view, params)
        } catch (e: Exception) {
            Log.d("The exception is", e.toString())
        }

        }

Answer 2

你可以这样做,但是,这在很大程度上违背了安康本身的设计原则,人们会立即取消你的用意。

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