I'm unable to make WorkManager survive reboot. I want my tasks to be executed automatically even after reboot.
My Device is Realme X2 with Android 10.
WorkManager is working fine. But the moment i reboot my phone and wait for 15 mins for my tasks to be executed but it simply never executes.
WorkManagerReceiver.java
package com.example.surviverebootwm;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import androidx.work.PeriodicWorkRequest;
import androidx.work.WorkManager;
import java.util.concurrent.TimeUnit;
public class WorkManagerReceiver extends BroadcastReceiver {
WorkManager mWorkManager;
#Override
public void onReceive(Context context, Intent intent) {
PeriodicWorkRequest.Builder myWorkBuilder =
new PeriodicWorkRequest.Builder(TestWorker.class,
PeriodicWorkRequest.MIN_PERIODIC_INTERVAL_MILLIS,
TimeUnit.MILLISECONDS);
PeriodicWorkRequest myWork = myWorkBuilder.build();
mWorkManager = WorkManager.getInstance(context);
mWorkManager.enqueue(myWork);
}
}
TestWorker.java
package com.example.surviverebootwm;
import android.content.Context;
import android.media.MediaPlayer;
import android.provider.Settings;
import androidx.annotation.NonNull;
import androidx.work.Worker;
import androidx.work.WorkerParameters;
public class TestWorker extends Worker {
public TestWorker(#NonNull Context context, #NonNull WorkerParameters workerParams) {
super(context, workerParams);
}
#NonNull
#Override
public Result doWork() {
MediaPlayer mediaPlayer;
mediaPlayer = MediaPlayer.create(getApplicationContext(), Settings.System.DEFAULT_ALARM_ALERT_URI);
mediaPlayer.setLooping(true);
mediaPlayer.start();
return Result.success();
}
}
MainActivity.java
package com.example.surviverebootwm;
import androidx.appcompat.app.AppCompatActivity;
import androidx.work.ExistingPeriodicWorkPolicy;
import androidx.work.PeriodicWorkRequest;
import androidx.work.WorkManager;
import android.os.Bundle;
import java.util.concurrent.TimeUnit;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
PeriodicWorkRequest.Builder myWorkBuilder =
new PeriodicWorkRequest.Builder(TestWorker.class,
PeriodicWorkRequest.MIN_PERIODIC_INTERVAL_MILLIS,
TimeUnit.MILLISECONDS);
PeriodicWorkRequest myWork = myWorkBuilder.build();
WorkManager.getInstance(MainActivity.this)
.enqueueUniquePeriodicWork("testworker", ExistingPeriodicWorkPolicy.KEEP, myWork);
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.surviverebootwm">
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".WorkManagerReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
</intent-filter>
</receiver>
</application>
</manifest>
Related
I'm a newbie to android programming
I am trying to read incoming SMS and the SMS sender number and display it in my app.
As soon as my phone receives an SMS the app closes
Is there a simple Solution, Should I not be using two classes in the same activity
package com.example.readnewmsg;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.provider.Telephony;
import android.support.v7.app.AppCompatActivity;
import android.telephony.SmsMessage;
import com.example.readnewmsg.databinding.ActivityMainBinding;
public class MainActivity extends AppCompatActivity {
private ActivityMainBinding binding;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
}
public class SmsListner extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Telephony.Sms.Intents.SMS_RECEIVED_ACTION)) {
String smsSender = "";
String smsBody = "";
for (SmsMessage smsMessage : Telephony.Sms.Intents.getMessagesFromIntent(intent)) {
smsBody += smsMessage.getMessageBody();
smsSender += smsMessage.getOriginatingAddress();
binding.MsgText.setText(smsBody);
binding.NoView.setText(smsSender);
}
}
}
}
}
I have Added these permissions in My manifest file
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
And also these intent filters
<application
android:allowBackup="true"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".MainActivity$SmsListner">
<intent-filter android:priority="999">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
</application>
I have made a simple service in android studio which should start as soon as I boot the phone. It should display atleast a TOAST Message. I am using Redmi note 4 as emulator and the service is not starting when I boot or reboot the phone. I have set the app to autostart also in settings.
Android Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dilip3.myapplication" >
<!-- Permission for starting app on boot -->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme" >
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Service required starting app on boot -->
<service android:name=".MyService" android:label="My Service">
<intent-filter>
<action android:name="com.myapp.MyService" />
</intent-filter>
</service>
<receiver
android:enabled="true"
android:name=".BootService"
android:exported="true"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.REBOOT"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</receiver>
</application>
</manifest>
BootService.java
package com.example.dilip3.myapplication;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class BootService extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)){
Toast.makeText(context, "Boot Completed", Toast.LENGTH_SHORT).show();
Intent serviceIntent = new Intent(context, MyService.class);
context.startActivity(serviceIntent);
}
}
}
MyService.java
package com.example.dilip3.myapplication;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.widget.Toast;
public class MyService extends Service {
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "service starting", Toast.LENGTH_LONG).show();
return super.onStartCommand(intent,flags,startId);
}
}
MainActivity.java has no changes.
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
You need to start a service, not an activity.
From
context.startActivity(serviceIntent);
To
context.startService(serviceIntent);
I am developing an android app which should be able to identify when someone press the hardware volume up button of the phone , and give a notification saying "volume up button has pressed".
This is my BroadcastReceiver class.
package com.example.volumebut;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.view.KeyEvent;
import android.widget.Toast;
public class HardwareButtonReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
KeyEvent e = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if(e.getKeyCode() == KeyEvent.KEYCODE_VOLUME_UP) {
Toast.makeText(context, "volume up button pressed." ,Toast.LENGTH_LONG).show();
}
}
}
This is my manifest file
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.volumebut"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.volumebut.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".HardwareButtonReceiver">
<intent-filter>
<action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>
</receiver>
</application>
</manifest>
Since I am new to android development I have no idea how to implement MainActivity.java file.
This is the MainActivity.java file I have wrote so far. But it gives an error saying "The method registerMediaButtonEventReceiver(HardwareButtonReceiver) is undefined for the type MainActivity"
package com.example.volumebut;
import android.media.AudioManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.view.Menu;
public class MainActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
HardwareButtonReceiver receiver = new HardwareButtonReceiver();
registerMediaButtonEventReceiver(receiver);
}
}
If you guys can help me to solve my problem I appreciate It much.
http://developer.android.com/reference/android/view/KeyEvent.html
go through above link you will get different key events
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
//
}
else if(keyCode == KeyEvent.KEYCODE_VOLUME_DOWN)
{
}
return super.onKeyDown(keyCode, event);
}
You must add method registerMediaButtonEventReceiver to your activity class.
public class MainActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.xml_of_your_activity);
HardwareButtonReceiver receiver = new HardwareButtonReceiver();
registerMediaButtonEventReceiver(receiver);
}
private void registerMediaButtonEventReceiver(HardwareButtonReceiver receiver) {
}
}
And then implement it of course.
I am trying to create an Android app in Android Studio.
The app is mainly a background service to send some information to the server around every 15 seconds or so.
I have created an empty activity, boot receiver and a service class, but it doesn't work.
Could somebody help me, and explain why it doesn't work.
The relevant files:
MainActivity.java
package nl.robinvandervliet.robinsapp.app;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
public class MainActivity extends ActionBarActivity
{
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
finish();
}
}
BootReceiver.java
package nl.robinvandervliet.robinsapp.app;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class BootReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
context.startService(new Intent(context, RobinsService.class));
}
}
RobinsService.java
package nl.robinvandervliet.robinsapp.app;
import android.app.Notification;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.widget.Toast;
public class RobinsService extends Service
{
private Runnable runnable = new Runnable()
{
#Override
public void run()
{
//Opening connection to the server.
while (true)
{
//Sending some data to the server.
//Sleeping for around 15 seconds.
}
//Dead code, should never reach this place.
}
};
public IBinder onBind(Intent intent)
{
return null;
}
#Override
public void onCreate()
{
new Thread(runnable).start();
Notification notification = new Notification.Builder(getApplicationContext()).setContentTitle("MyService is running!").setContentTitle("(more information later)").build();
startForeground(1, notification);
Toast.makeText(getApplicationContext(), "Service created!", Toast.LENGTH_LONG).show();
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="nl.robinvandervliet.robinsapp.app" >
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="nl.robinvandervliet.robinsapp.app.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="nl.robinvandervliet.robinsapp.app.BootReceiver" android:enabled="true" android:exported="false">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service android:name="nl.robinvandervliet.robinsapp.app.RobinsService" android:exported="false" />
</application>
<uses-permission android:name="android.permission.BATTERY_STATS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
</manifest>
Thanks, Robin.
Since you haven't implemented some parts yet I assume you just want it to run when you boot your device. Maybe take a look here. Adding an extra action in the manifest might solve your problem.
I'm trying to create an app that runs on startup. It's a simple program to display text that I want to display when I turn on my android device.
So far this is what I have:
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mycompany.helloworld"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="11" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:label="#string/app_name"
android:name=".MainActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.mycompany.mybirthday.StartMyActivityAtBootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
</manifest>
MainActivity.java
package com.mycompany.mybirthday;
import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import java.util.*;
public class MainActivity extends Activity
{
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Do stuff
}
}
StartMyActivityAtBootReceiver.java
package com.mycompany.mybirthday;
import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import java.util.*;
import android.content.*;
public class StartMyActivityAtBootReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Intent activityIntent = new Intent(context, MainActivity.class);
context.startActivity(activityIntent);
}
}
When I start my android, I get a message "Unfortunately, My Birthday stopped". What am I doing wrong?