Databases
StackOverflow2013
Postsdbo
POStart an Activity even when Android phone is in locked mode / on lock screen
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POStart an Activity even when Android phone is in locked mode / on lock screen
    text
    copied!<p>How I can start my activity even when phone is in locked mode so I can access my application? </p> <p>I want to ring an alarm first using <code>ringAlarm()</code> then goes to another activity that will display <code>alertdialog</code> to stop the alarm. </p> <p>It works fine if phone is active, but when the phone is locked, it just alarms continuously and by the time i unlock the phone, the stop alarm button doesn't activate. Please help me. Thanks for help in advance.</p> <p>Here is my code:</p> <pre><code>public class EAlarmReceiver extends BroadcastReceiver { public static String sender; public static String sms = ""; public static Ringtone r; public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub Bundle bundle = intent.getExtras(); Object[] pdusObj = (Object[]) bundle.get("pdus"); SmsMessage[] messages = new SmsMessage[pdusObj.length]; for (int i = 0; i&lt;pdusObj.length; i++) { messages[i] = SmsMessage.createFromPdu ((byte[]) pdusObj[i]); sender = messages[i].getOriginatingAddress(); sms = messages[i].getMessageBody();//save sms to string } for (SmsMessage msg : messages) { if (msg.getMessageBody().contains("alert")) { Intent openStopAlarm = new Intent("proj.receiver.STOPALARM"); openStopAlarm.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_NO_HISTORY); ringAlarm(context); context.startActivity(openStopAlarm); abortBroadcast(); }//end if }//end for }// end onreceive //ring the alarm public void ringAlarm(Context context) { Uri alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM); if(alert == null){ // alert is null, using backup alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); if(alert == null){ // // alert backup is null, using 2nd backup alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE); } } r = RingtoneManager.getRingtone(context.getApplicationContext(), alert); AudioManager audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE); int maxVolumeAlarm = audioManager.getStreamMaxVolume(AudioManager.STREAM_ALARM); int maxVolumeRing = audioManager.getStreamMaxVolume(AudioManager.STREAM_RING); audioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL); audioManager.setStreamVolume(AudioManager.STREAM_ALARM, maxVolumeAlarm,AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE); audioManager.setStreamVolume(AudioManager.STREAM_RING, maxVolumeRing,AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE); r.play(); Toast.makeText(context.getApplicationContext(), "alarm started", Toast.LENGTH_LONG).show(); } //end ringAlarm() } </code></pre> <p>I've seen a code on how to do it but I didn't know how to use it. so I'm still having the same problem. Here's the code.</p> <pre><code>public class DismissLock extends Activity { PowerManager pm; WakeLock wl; KeyguardManager km; KeyguardLock kl; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); Log.i("INFO", "onCreate() in DismissLock"); pm = (PowerManager) getSystemService(Context.POWER_SERVICE); km=(KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE); kl= km.newKeyguardLock("INFO"); wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP|PowerManager.ON_AFTER_RELEASE, "INFO"); wl.acquire(); //wake up the screen kl.disableKeyguard();// dismiss the keyguard setContentView(R.layout.main); } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); wl.release(); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); wl.acquire();//must call this! } } </code></pre>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload