I'm trying to write an battery monitoring application, and one of its function is to keep track of the number of time being recharged and the date associated with it.
First, I wrote everything in the main activity class using SharedPreferences, and it does work. However, I wish to keep track of the number of recharge even in background, so I googled and figured that WakefulBroadcastReceiver + IntentService might be the most efficient/easy way to do it.
I was wrong. I stuck here and I think the problem I'm having right now is that the monitor (the IntentService part) doesn't even start! I think I might have put something wrong in the manifest but I just can't find it.
Here're my codes:
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mobiledevices.batteryapp" >
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
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=".BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service
android:name=".RechargeMonitor"
android:exported="false" />
</application>
BootReceiver.java
package com.mobiledevices.batteryapp;
import android.content.Intent;
import android.content.Context;
import android.support.v4.content.WakefulBroadcastReceiver;
public class BootReceiver extends WakefulBroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent){
Intent startServiceIntent = new Intent(context, RechargeMonitor.class);
startWakefulService(context, startServiceIntent);
}
}
RechargeMonitor.java
package com.mobiledevices.batteryapp;
import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.BroadcastReceiver;
import android.content.SharedPreferences;
import android.os.BatteryManager;
import android.widget.Toast;
public class RechargeMonitor extends IntentService {
public RechargeMonitor(){
super("RechargeMonitor");
}
#Override
protected void onHandleIntent(Intent intent){
Toast.makeText(this, "Service Started", Toast.LENGTH_LONG).show();
this.registerReceiver(this.batteryinfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
private BroadcastReceiver batteryinfoReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if(intent.getExtras().getBoolean(BatteryManager.EXTRA_PRESENT) &&
intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0)!=0 &&
intent.getIntExtra(BatteryManager.EXTRA_STATUS, 0)==BatteryManager.BATTERY_STATUS_CHARGING){
SharedPreferences settings = getSharedPreferences(MainActivity.PREF_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
int count = settings.getInt("COUNT", 0);
editor.putInt("COUNT", count+1);
editor.commit();
}
}
};
}
The MainActivity.java is too long so I don't post it here. However, it shouldn't have any problem with that unless I have to call either BootReceiver/RechargeMonitor in the activity file which I guess I don't have to since manifest + BootReciver should be taking care of autostart, and it won't even be a problem.
Again the problem I encounter now is RechargeMonitor doesn't seem to start (I don't see any Toast message.)
Another thing for me to make sure is that SharedPreferences should be accessible everywhere in the same application as long as I have the name right. I've seen that in several places but I need a solid answer.
Thanks!
Related
I have an application without any activity but just a receiver. I regiter the receiver and then install the apk using adb. However, I never reach this receiver. Why Do I never reach the receiver (for example while rebooting)?
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="amiin.bazouk.application.com.doproject">
<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">
<receiver android:name=".DeviceOwnerReceiver">
</receiver>
</application>
</manifest>
DeviceOwnerReceiver.java:
package amiin.bazouk.application.com.doproject;
import android.app.Activity;
import android.app.admin.DeviceAdminReceiver;
import android.app.admin.DevicePolicyManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class DeviceOwnerReceiver extends DeviceAdminReceiver {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(action.equals("android.intent.action.BOOT_COMPLETED")){
System.out.println("ADRIEN");
}
if(action.equals("android.intent.action.BATTERY_CHANGED")){
System.out.println("ADRIEN");
}
}
#Override
public void onProfileProvisioningComplete(Context context, Intent intent) {
if (Util.isDeviceOwner(context)){
//start enforcing policies: example if kioskModeEnabled->startKiostMode
}
}
#Override
public void onLockTaskModeEntering(Context context,Intent intent,String pkg) {
if (Util.isDeviceOwner(context)){
//start enforcing kiosk mode policies like this example when this property is done:
DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService(Activity.DEVICE_POLICY_SERVICE);;
dpm.setStatusBarDisabled(new ComponentName(context.getApplicationContext(), DeviceOwnerReceiver.class),false);
}
}
#Override
public void onLockTaskModeExiting(Context context,Intent intent) {
//exit kioskmode
}
}
I think you need to setup RECEIVE_BOOT_COMPLETED permission, and also configure intent filter to your service like BOOT_COMPLETED, QUICKBOOT_POWERON.
Look at this, they answer explain very well the issue
https://stackoverflow.com/a/46294732/7774671
There are few things missing in the receiver in the manifest. Try this.
<receiver
android:name=".DeviceOwnerReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<action android:name="android.intent.action.BATTERY_CHANGED"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</receiver>
A broadcast receiver will not be invoked if it is not registered with an intent. This association receiver / intent can be declared in the manifest using intent filter.
<receiver android:name=".DeviceOwnerReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"></action>
<action android:name="android.intent.action.BATTERY_CHANGED"></action>
</intent-filter>
</receiver>
I want to start a service after reboot. The problem I have is that this does not happen every time (at least the first 20 minnutes). I have study many questions into stackoverflow and try a number of the provided solutions however sometimes the service does not automaticaly start after reboot.
Also I have to add another parameter this of the foreground service for android versions O and above.
Could someone give me any advice?
AndroidManifest.xml
.... <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:name=".App"
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=".Activities.MainActivity"
....
</activity>
<activity
...
</activity>
<receiver android:name=".Helpers.BootCompletedIntentReceiver" android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<!-- I think that this is also not necessery <category android:name="android.intent.category.DEFAULT" /> -->
<action android:name="android.intent.action.QUICKBOOT_POWERON"/>
</intent-filter>
</receiver>
<service
android:name=".Services.myService"
android:enabled="true"
android:exported="true"></service>
</application>
BroadcastReciever
package com.abc.Helpers;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import com.abx.Activities.MainActivity;
import com.abc.Services.myService;
public class BootCompletedIntentReceiver extends BroadcastReceiver {
private static final String TAG = "MyBroadcastReceiver";
#Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
Intent serviceIntent = new Intent(context, myService.class);
serviceIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
ContextCompat.startForegroundService(context,serviceIntent);
} else {
context.startService(serviceIntent);
}
}
}
I also found in a comment here that reciever should be registered into an activity of the application and this is the code in Mainactivity. Do you agree?
#Override
protected void onCreate(Bundle savedInstanceState) {
...
final ComponentName onBootReceiver = new ComponentName(getApplication().getPackageName(), BootCompletedIntentReceiver.class.getName());
if(getPackageManager().getComponentEnabledSetting(onBootReceiver) != PackageManager.COMPONENT_ENABLED_STATE_ENABLED)
getPackageManager().setComponentEnabledSetting(onBootReceiver,PackageManager.COMPONENT_ENABLED_STATE_ENABLED,PackageManager.DONT_KILL_APP);
..
}
I want to auto start my service when device is rebooted.Please do not mark this as duplicate of Question, but solution given there are not working!
BootUpReceiver.java (BroadcastReceiver)
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import java.util.Map;
public class BootUpReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
Intent pushIntent = new Intent(context, MyService.class);
context.startService(pushIntent);
}
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.shubham.servic">
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>
<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:enabled="true"
android:name=".BootUpReceiver"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
<service
android:name=".MyService"
android:enabled="true"
android:exported="true">
</service>
</application>
</manifest>
MainActivity.java
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.View;
public class MainActivity extends Activity {
String msg = "Android : ";
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d(msg, "The onCreate() event");
}
public void startService(View view) {
startService(new Intent(getBaseContext(), MyService.class));
}
// Method to stop the service
public void stopService(View view) {
stopService(new Intent(getBaseContext(), MyService.class));
}
}
But still service is not starting itself on reboot.
I have one more different question:
I have to run my background service in fixed interval of time, So far I have created an AlarmManager inside service itself which is calling same service after some interval, again and again ,How can I achieve "running background service at fixed interval of time in more efficient way?"
Because of restrictions in Android Oreo you can't start services while in the background. source with detailed info
Like the source suggests you should use scheduled jobs instead. The easiest way to manage this is to use a library like android-job or workmanager. Android Job is a much used 3rd party library developed by Evernote, but they've announced support will end when Workmanager, which is still in alpha, has been in production for a while.
I have a MainActivity which do nothing and one class called BootCompletedIntentReceiver which extends BroadcastReciever and one more class with name MyServices which extends Service. All I want to do is autorun my app after device turns on which is handled by BootCompletedIntentReceiver and after that it starts a Service which shows a toast 8 times. But when i reboot my device nothing happens. I have tried my best to solve this. Can any one help me to find where i am getting stuck
Here is my BootCompletedIntentReceiver code:
package com.anshuman.myapplication;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class BootCompletedIntentReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
Intent pushIntent = new Intent(context, MyService.class);
context.startService(pushIntent);
}
}
}
And here is MyService class:
package com.anshuman.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 {
#Override
public void onCreate() {
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId){
int a=2;
while (a<10) {
Toast.makeText(this, "onStartCommand", Toast.LENGTH_LONG).show();
a++;
}
return Service.START_STICKY;
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
}
And my androidManifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.anshuman.myapplication">
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<receiver android:name=".BootCompletedIntentReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".MyService"/>
</application>
Code is working fine problem is that only my xiaomi device is not working with this code.
im trying to start an application on device boot.
my code is as follow
1- firstly the main class which contain a background thread (asynctask) that send data to a mysql database.
2- Service class
package com.seven.ex.helper;
import com.seven.ex.AndroidGPSTrackingActivity;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;
public class service extends Service {
private static final String TAG = "MyService";
#Override
public IBinder onBind(Intent intent) {
return null;
}
public void onDestroy() {
Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
Log.d(TAG, "onDestroy");
}
#Override
public void onStart(Intent intent, int startid)
{
Intent intents = new Intent(getBaseContext(),AndroidGPSTrackingActivity.class);
intents.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intents);
Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show();
Log.d(TAG, "onStart");
}
}
3- BootUpReceiver class
package com.seven.ex.helper;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
public class BootUpReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context arg0, Intent arg1) {
Intent intent = new Intent(arg0,service.class);
arg0.startService(intent);
Log.i("Autostart", "started");
}
}
4- the android manifest file
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.gpstracking"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name="com.seven.gpstracking.AndroidGPSTrackingActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".service"
android:label="#string/app_name"
>
</service>
<receiver android:enabled="true" android:name=".BootUpReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
</application>
</manifest>
The main method is working correctly before i tried to start it on boot.
Also the app still working after i ignore the android error on boot (The App Closed)
in the log cat am getting a class not found exception
can you please help ?
Your Service won't work like it is at the moment. You will have to move the stuff from onStart() to onStartCommand() and then return whether the service is sticky or not. The problem is that the onStart()-method has a good chance of not getting called at all (as it is deprectaed by now).
#Override
public int onStartCommand(final Intent intent, final int flags, final int startId) {
//do your stuff here
return Service.START_NOT_STICKY;
}
In your manifest you have assigned package: com.example.gpstracking. When u then define .BootUpReceiver. The system should expect to locate the class at com.example.gpstracking.BootUpReceiver.
Please try and change the package .BootUpReceiver to the full path com.seven.ex.helper.BootUpReceiver. The same goes for AndroidGPSTrackingActivity as this should be com.seven.ex.AndroidGPSTrackingActivity as far as I can tell.