I am trying to display my alarm activity over lock screen. I am using a full screen intent from my broadcast receiver. When the screen is locked, the activity is not displayed over lock screen. It is displayed when i unlock the screen. Where am i going wrong?
I have used following permissions:
<uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
In the activity, i am setting following flags in the activity's oncreate:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
setShowWhenLocked(true);
setTurnScreenOn(true);
KeyguardManager keyguardManager = (KeyguardManager)
getSystemService(Context.KEYGUARD_SERVICE);
if(keyguardManager!=null)
keyguardManager.requestDismissKeyguard(this, null);
} else {
getWindow().addFlags(
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
);
}
Related
I am trying to show an activity when the screen is locked. I am running a service in the background, when an event occurs, I want to open an activity even if the app is locked(Similar to alarm app, which wakes up the screen and displays its activity). I have followed the following steps,
When OnReceive() is called, I want to open the activity on the lock screen.
public void OnReceive() {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "myalarmapp:alarm.");
wl.acquire(5000);
Intent startAlarmActivity = new Intent(MainScreen.this, AcceptScreen.class);
startActivity(startAlarmActivity);
wl.release();
}
Added below code in the activity's onCreate method which I want to show,
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
setShowWhenLocked(true);
setTurnScreenOn(true);
KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
keyguardManager.requestDismissKeyguard(this, null);
}
else {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}
Added this in manifest for the activity which I want to show,
<activity
android:name=".v2.ui.orderaccept.AcceptScreen"
android:exported="true"
android:label="#string/title_activity_accept_screen"
android:theme="#style/AppTheme.NoActionBar"
android:showOnLockScreen="true"
android:screenOrientation="sensorPortrait"/>
It is working as expected when the phone does not have a lock screen password. But it does not work when there is a password for the lock screen.
Finally, I got the solution.
add below code in the activity's onCreate method which you want to show on the lock screen,
final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON);
Manifest,
<activity
android:name=".v2.ui.orderaccept.AcceptScreen"
android:exported="true"
android:label="#string/title_activity_accept_screen"
android:theme="#style/AppTheme.NoActionBar"
android:launchMode="singleInstance"/>
Call the activity,
val intent = Intent(context, targetclass)
intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
startActivity(intent)
I've tried opening an Activity on the lock screen in Android Pie but I could not.
I added the showWhenLocked and turnScreenOn on the Android Manifest and on the proper activity and permissions I searched for but could not make the activity open on the default lock screen on the phone. Some help?
MainActivity
if (Build.VERSION.SDK_INT >= 27) {
setShowWhenLocked(true);
setTurnScreenOn(true);
} else {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
}
Android Manifest
android:showWhenLocked="true"
android:turnScreenOn="true"
android:showOnLockScreen="true"
android:excludeFromRecents="true"
Here is my working method call it from onCreate() before setContentView() of activity
Also set below flag for your activity in AndroidManifest file.
android:showOnLockScreen="true"
/**
* Allow calling screen to display over lock screen
*/
private fun allowOnLockScreen() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
setShowWhenLocked(true)
setTurnScreenOn(true)
val keyguardManager = getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
keyguardManager.requestDismissKeyguard(this, null)
} else {
this.window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD or
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED or
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON)
}
}
Just override the following method in your activity which you want to open on the lock screen.
#Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
}
And add the following tag to your activity in Manifest.
android:excludeFromRecents="true"
Something like this should work:
PowerManager.WakeLock cpuWakelock = ((PowerManager) getSystemService(POWER_SERVICE)).newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "XXX:CPU_WAKE_LOCK");
cpuWakelock.acquire();
I am trying to disable lock screen while making my screen turn off but as soon as screen turns off lock is held again.
I am using below code to disable the lock screen:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
} else {
KeyguardManager km = (KeyguardManager) activity.getSystemService(KEYGUARD_SERVICE);
kl = km.newKeyguardLock("name");
kl.disableKeyguard();
}
And to enable the lock screen:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
} else {
KeyguardManager km = (KeyguardManager) activity.getSystemService(KEYGUARD_SERVICE);
kl = km.newKeyguardLock("name");
kl.reenableKeyguard();
}
Try this in OnCreate of the Activity.
Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
Please give below permission also in android.manifest.xml
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
You can also refer this link for more info
https://thinkandroid.wordpress.com/2010/01/24/handling-screen-off-and-screen-on-intents/
I'm using this code to disable keyboard to disable home button .
I'm using this in activity where I want the keyguard to be disabled ,so is it necessary that keyguard should be called from service ?
If not why keyguard is not getting disabled ?
KeyguardManager km = (KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);
km.inKeyguardRestrictedInputMode();
this.key = km.newKeyguardLock("IN");
key.disableKeyguard();
String s = String.valueOf(km.isKeyguardLocked());
Log.d("keyguardvalue",s);
Please call for activity onResume or onCreate:
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON);
KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
setShowWhenLocked(true);
setTurnScreenOn(true);
if (keyguardManager != null)
keyguardManager.requestDismissKeyguard(this, null);
}
}
I have implemented the push notification using GCM and when i receive the notification i want to show in a dialog for which i have created a custom dialog.
Now, i want my dialog to appear even if the device is locked whether a pattern match or PIN.
I have made following tries, but no positive result.
public void onAttachedToWindow() {
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
| WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
}
and also
public void onAttachedToWindow() {
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
+ WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
+ WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
+ WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
}
permissions in manifest:
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
and also added the
android:showOnLockScreen="true"
for the activity to which i want to be shown when screen is locked.
Please help.
As refer to link
Show dialog with touch events over lockscreen in Android 2.3
I do not think you can display dialog when device is locked without binding your application as admin privileged app programatically.
So you have to bind your application with Device administrator. You can download device administrator sample from https://github.com/marakana/DevicePolicyDemo.
After binding your application through Device administrator once you receive the push notification first unlock device by
DevicePolicyManager devicePolicyManager = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
ComponentName demoDeviceAdmin = new ComponentName(context, DemoDeviceAdminReceiver.class);
devicePolicyManager.setMaximumTimeToLock(demoDeviceAdmin, 0);
then launch your activity in which you can display you dialog in onattach window like this
#Override
public void onAttachedToWindow()
{
super.onAttachedToWindow();
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
| WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
new AlertDialog.Builder(this).setMessage("Dialog Displaying").setNeutralButton("OK", new OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
}).show();
}
Please let me know if it help.
You should use the KeyGuardManager to unlock the device automatically and then acquire your Wake Lock.
KeyguardManager kgm = (KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);
boolean isKeyguardUp = kgm.inKeyguardRestrictedInputMode();
KeyguardLock kgl = kgm.newKeyguardLock("Your Activity/Service name");
if(isKeyguardUp){
kgl.disableKeyguard();
isKeyguardUp = false;
}
wl.acquire(); //use your wake lock once keyguard is down.
you should add this permission to manifest
<uses-permission android:name="android.permission.WAKE_LOCK"/>
and this
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>