android - 在运行 Oreo 和 Pie 的设备中如何在锁定屏幕上覆盖布局
问题描述
在我的应用程序中，当我运行服务时，我尝试在此处使用服务覆盖布局晚于 oreo 它不起作用但是当我按照其他答案中的建议将标志更改为 Type_Application_Overlay 时，它只会在屏幕解锁时显示布局但我想在锁定屏幕上显示它我尝试了很多搜索但没有找到任何有用的答案解决这个问题一些答案建议在锁屏上显示活动我也尝试过，但仍然没有证明有任何帮助！
此外，要补充的是，Play商店中有一些应用程序可以轻松地在锁定屏幕上显示任何布局，即使在奥利奥和派上也是如此：
你可以看看这个应用程序：
https://play.google.com/store/apps/details?id=com.wifihacker.whousemywifi.wifirouter.wifisecurity
即使不要求任何覆盖权限或设备管理员权限，此应用程序也可以轻松地在锁屏上显示自定义全屏布局。
那么，如果这个应用程序能够覆盖锁定屏幕，为什么我不能这样做呢？
对此的任何帮助和建议将不胜感激！
这是我当前的锁屏服务代码：
class LockScreenService : Service() {
private lateinit var mReceiver: BroadcastReceiver
private var isShowing = false
private lateinit var windowManager: WindowManager
lateinit var params: WindowManager.LayoutParams
lateinit var myview: View
var downX:Int = 0
lateinit var locklayout:RelativeLayout
var upX:Int = 0
var indicator: WaveLoadingView?=null
lateinit var date:TextView
lateinit var time:TextView
lateinit var settings:ImageView
lateinit var unlock:LinearLayout
var r:Runnable?=null
companion object{
}
private val mBatInfoReceiver = object : BroadcastReceiver() {
override fun onReceive(ctxt: Context, intent: Intent) {
val level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0)
if (indicator!=null)
{
indicator!!.progressValue = level
indicator!!.setAnimDuration(3000)
indicator!!.startAnimation()
}
}
}
override fun onBind(intent: Intent): IBinder? {
// TODO Auto-generated method stub
return null
}
override fun onCreate() {
super.onCreate()
try {
EventBus.getDefault().register(this)
windowManager = applicationContext.getSystemService(WINDOW_SERVICE) as WindowManager
val li = getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
myview = li.inflate(R.layout.lockscreenlayout, null)
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
params = WindowManager.LayoutParams(
WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT
)
} else {
params = WindowManager.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ERROR,
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
or WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
or WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
or WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,
PixelFormat.TRANSLUCENT
)
myview.setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
or View.SYSTEM_UI_FLAG_FULLSCREEN
or View.SYSTEM_UI_FLAG_VISIBLE
or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
or View.SYSTEM_UI_FLAG_IMMERSIVE
or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
)
}
myview.setVisibility(View.VISIBLE)
settings = myview.findViewById(R.id.imgsetting)
settings.setOnClickListener {
var intent = Intent(this, Settings::class.java)
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
this.startActivity(intent)
windowManager.removeViewImmediate(myview)
}
indicator = myview.findViewById(R.id.indicator)
locklayout = myview.findViewById(R.id.locklay)
this.registerReceiver(this.mBatInfoReceiver, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
time = myview.findViewById(R.id.time)
date = myview.findViewById(R.id.date)
date.text =
SimpleDateFormat("EEEE").format(Calendar.getInstance().time).toString() + "," + SimpleDateFormat("dd").format(
Calendar.getInstance().time
).toString() + " " + SimpleDateFormat("MMMM").format(Calendar.getInstance().time).toString()
try {
unlock.setOnTouchListener(object : View.OnTouchListener {
override fun onTouch(v: View?, event: MotionEvent?): Boolean {
if (event!!.getAction() == MotionEvent.ACTION_DOWN) {
downX = event.getX().toInt()
return true
} else if (event.getAction() == MotionEvent.ACTION_UP) {
upX = event.getX().toInt()
if (upX - downX > 100) {
val animation = AnimationUtils.loadAnimation(applicationContext, R.anim.left_right_anim)
animation.setAnimationListener(object : Animation.AnimationListener {
override fun onAnimationStart(animation: Animation) {}
override fun onAnimationRepeat(animation: Animation) {}
override fun onAnimationEnd(animation: Animation) {
windowManager.removeViewImmediate(myview)
}
})
locklayout.startAnimation(animation)
// swipe right
} else if (downX - upX > -100) {
}
return true
}
return false
}
})
} catch (ex: Exception)
{}
//Register receiver for determining screen off and if user is present
mReceiver = LockScreenStateReceiver()
val filter = IntentFilter(Intent.ACTION_SCREEN_OFF)
filter.addAction(Intent.ACTION_USER_PRESENT)
registerReceiver(mReceiver, filter)
}
catch (ex:Exception)
{
}
}
override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
return START_STICKY
}
inner class LockScreenStateReceiver : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
try {
if (intent.action == Intent.ACTION_SCREEN_OFF) {
//if screen is turn off show the textview
if (!isShowing) {
windowManager.addView(myview, params)
isShowing = true
}
} else if (intent.action == Intent.ACTION_USER_PRESENT) {
//Handle resuming events if user is present/screen is unlocked remove the textview immediately
if (isShowing) {
if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.O) {
//windowManager.removeViewImmediate(myview)
}
isShowing = false
}
}
}
catch (ex:Exception){
}
}
}
override fun onDestroy() {
//unregister receiver when the service is destroy
try {
EventBus.getDefault().unregister(this)
if (mReceiver != null) {
unregisterReceiver(mReceiver)
}
//remove view if it is showing and the service is destroy
if (isShowing) {
if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.O) {
//windowManager.removeViewImmediate(myview)
}
isShowing = false
}
}
catch (ex:Exception)
{
}
super.onDestroy()
}
}
解决方案
我非常感谢@Emir 的回答，但是他提供的代码没有在某些设备上运行，并且活动没有在锁定屏幕上启动
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
这里的问题是代码的“或”部分导致某些设备出现问题，所以为了解决这个问题，我所做的不是在“或”部分中调用窗口标志，而是单独调用所有这些标志这是我在 oncreate 中所做的解决这个问题。
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_lock_screen)
//execute all flags individually to solve this issue
window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED)
window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD)
window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON)
window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
val mUIFlag = ( View.SYSTEM_UI_FLAG_LAYOUT_STABLE
or View.SYSTEM_UI_FLAG_FULLSCREEN
or View.SYSTEM_UI_FLAG_VISIBLE
or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
or View.SYSTEM_UI_FLAG_IMMERSIVE
or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN)
window.decorView.systemUiVisibility = mUIFlag
}
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