I did these
1.使用Broad Cast接收器的前台服务，在锁屏上显示一个活动
public class OverlayService extends Service {
NotificationManager manager;
@Override
public IBinder onBind(Intent intent) {
throw new UnsupportedOperationException("Not yet implemented");
@Override
public void onCreate() {
super.onCreate();
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.O)
startMyOwnForeground();
else {
startForeground(1, new Notification());
Toast.makeText(this, " Service Is Running", Toast.LENGTH_LONG).show();
@RequiresApi(Build.VERSION_CODES.O)
private void startMyOwnForeground() {
String NOTIFICATION_CHANNEL_ID = ".....";
String channelName = "Foreground Service";
NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_DEFAULT);
chan.setLightColor(Color.BLUE);
chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
chan.setShowBadge(false);
manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
assert manager != null;
manager.createNotificationChannel(chan);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
Notification notification = notificationBuilder.setOngoing(true)
.setContentTitle("text_my")
.setContentText("my_text")
.setPriority(NotificationManager.IMPORTANCE_DEFAULT)
.setCategory(Notification.CATEGORY_EVENT)
.build();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
startForeground(2, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC);
startForeground(2, notification);
Toast.makeText(this, " ...Service Is Running", Toast.LENGTH_LONG).show();
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
registerOverlayReceiver();
return START_STICKY;
@Override
public void onDestroy() {
super.onDestroy();
unregisterOverlayReceiver();
private void registerOverlayReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_ON);
filter.addAction(ACTION_DEBUG);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
filter.addAction(Intent.ACTION_USER_UNLOCKED);
registerReceiver(overlayReceiver, filter);
private void unregisterOverlayReceiver() {
unregisterReceiver(overlayReceiver);
private static final String ACTION_DEBUG = "....text";
private final BroadcastReceiver overlayReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
assert action != null;
if (action.equals(Intent.ACTION_SCREEN_ON)) {
showOverlayActivity(context);
} else if (action.equals(ACTION_DEBUG)) {
showOverlayActivity(context);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && action.equals(Intent.ACTION_USER_UNLOCKED)) {
showOverlayActivity(context);
private void showOverlayActivity(Context context) {
Intent intent = new Intent(context, com.rad.mls.OverlayActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
In OverlayActivity to show on LockScreen
final Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
Permission in Android Manifest
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
Activity in Manifest
<activity
android:name=".OverlayActivity"
android:excludeFromRecents="true"
android:screenOrientation="portrait"
android:showOnLockScreen="true"
android:theme="@style/Theme.Lockscreen" />
The way I start Foreground Service
Intent i = new Intent(this, OverlayService.class);
i.setAction("C.ACTION_START_SERVICE");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) startForegroundService(i);
startService(i);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Toast.makeText(this, "Give app permission to DISPLAY(DRAW) OVER TOP OF OTHER APPS", Toast.LENGTH_LONG).show();
Intent intent;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
} else {
intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", getPackageName(), null);
intent.setData(uri);
startActivity(intent);
finish();
} else {
finish();
我也问过用户，如果他们使用的是MIUI，请进入权限并允许应用程序在锁屏上显示，但仍然
主要问题：虽然它在大多数设备上工作，但在许多设备上，活动没有显示在模式/密码锁上。
活动没有显示在模式/密码锁上，而且在许多设备上
锁定，而且在许多设备上，该服务在一段时间后会被自动杀死，并停止显示活动。
停止显示活动
有什么合适的方法可以在锁屏上显示带有事件监听器的布局？
或者有什么方法可以完美的实现它？
1 个回答
0 人赞同
实际上，在8+上，你需要一些其他的代码，而那些被废弃的标志则不能工作。
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1){
setShowWhenLocked(true)
setTurnScreenOn(true)
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
(getSystemService(Context.KEYGUARD_SERVICE) as? KeyguardManager)?.requesDismissKeyguard()
