I have to create application and want to use it always when phone works, currently my code is:
Android Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.plan.pedometer">
<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">
<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:enabled="true"
android:name=".PedometerService"/>
<receiver
android:name=".receiver.StartPedometerServiceAtBootReceiver"
android:label="StartPedometerServiceAtBootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
</manifest>
StartPedometerServiceAtBootReceiver:
public class StartPedometerServiceAtBootReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
Intent serviceIntent = new Intent(context, PedometerService.class);
context.startService(serviceIntent);
}
}
}
Service:
public class PedometerService extends IntentService {
private int Steps=0;
public PedometerService() {
super("Pedometer_Worker_Thread");
}
@Override
protected void onHandleIntent(Intent intent) {
putInSharedPreferences();
synchronized (this) {
try {
wait(1000000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void putInSharedPreferences(){
stepsNumbers = getApplicationContext().getSharedPreferences("stepsData", MODE_PRIVATE);
editorStepsNumbers=stepsNumbers.edit();
editorStepsNumbers.putInt(String.valueOf(STEPS),Steps).apply();
}
}
It works if I start Service in MainActivity by:
Intent intent = new Intent(getApplication(),PedometerService.class);
startService(intent);
and Service is running in background but when I restart my phone nothing happens and Service does not start.
I have one more question, this is Pedometer application, where should I put onSensorChange method in Service? Create something like while(1) in onHandleIntent() and put it there?
UPDATE - my actually code is:
I followed this tutorial https://github.com/codepath/android_guides/wiki/Starting-Background-Services
and tried to use WakefulBroadcastReceiver
AndroidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.plan.pedomoter">
<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>
<service
android:name="com.plan.pedomoter.MyTestService"
android:exported="false"/>
<receiver android:name="com.plan.pedomoter.BootBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
</manifest>
MainActivity:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
protected void onStart() {
super.onStart();
launchTestService();
}
public void launchTestService() {
// Construct our Intent specifying the Service
Intent i = new Intent(this, MyTestService.class);
// Add extras to the bundle
i.putExtra("foo", "bar");
// Start the service
startService(i);
}
}
Receiver:
public class BootBroadcastReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// Launch the specified service when this message is received
Intent startServiceIntent = new Intent(context, MyTestService.class);
startWakefulService(context, startServiceIntent);
}
}
Service:
public class MyTestService extends IntentService {
Handler handler;
// Must create a default constructor
public MyTestService() {
// Used to name the worker thread, important only for debugging.
super("test-service");
}
@Override
public void onCreate() {
super.onCreate(); // if you override onCreate(), make sure to call super().
// If a Context object is needed, call getApplicationContext() here.
handler = new Handler();
}
@Override
protected void onHandleIntent(Intent intent) {
WakefulBroadcastReceiver.completeWakefulIntent(intent);
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(MyTestService.this, "start", Toast.LENGTH_LONG).show();
int i = 0;
}
});
int i=0;
while(true){
i++;
// Do some work here
if(i>1000)
i=0;
}
}
@Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(MyTestService.this, "stop", Toast.LENGTH_SHORT).show();
}
}
I used while(true) in MyTestService for check that app is running in background, in project I will use sensors (this is pedometer application) then I want to put something like MyAlarmReceiver from tutorial to send data to the server several times a day.
