My service class is not calling and there is no error, crash report or exception!The line before and after calling the service is working and i have also checked using isMyServiceRunning method and its not working..
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent i = new Intent(this, MyService.class);
startService(i);
Toast.makeText(this,"to check if this is working",Toast.LENGTH_LONG).show();
}
}
Service class :
public class MyService extends Service implements SensorEventListener {
private SensorManager mSensorManager;
private Sensor mSensor;
double ax, ay, az;
#Override
public void onCreate() {
super.onCreate();
mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
if (mSensor != null) {
mSensorManager.registerListener(this, mSensor, SensorManager.SENSOR_DELAY_NORMAL);
} else {
stopSelf();
}
}
#Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
throw new UnsupportedOperationException("Not yet implemented");
}
#Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
ax = event.values[0];
bx = event.values[1];
cx = event.values[2];
}
}
#Override
public void onAccuracyChanged(Sensor arg0, int arg1) {
}
}
Manifest file :
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.star.sproject">
<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"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".MyService"
android:enabled="false"
android:exported="false"></service>
</application>
Please, help!
do this
<service
android:name=".MyService"
android:enabled="true"
android:exported="true">
</service>
Try to set attribute android:enabled of service's declaration to true in manifest.xml, otherwise service can not be instantiated.
https://developer.android.com/guide/topics/manifest/service-element.html
Related
I am looking to have some basic forms run on my android device after it is reset or on the first boot like most smartphones ask you to connect to Wi-Fi, register the device etc. I haven't worked with native android development previously so what are my options and what areas should I look into?
Try this
BootCompleteReceiver.java
public class BootCompleteReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, MsgPushService.class);
context.startService(service);
}
}
MyService.java
public class MyService extends Service {
#Override
public void onCreate() {
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "Service Started", Toast.LENGTH_LONG).show();
return Service.START_STICKY;
}
#Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(this, "Service Destroy", Toast.LENGTH_LONG).show();
}
#Override
public IBinder onBind(Intent arg0) {
return null;
}
}
MainActivity
public class MainActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
startService(new Intent(getBaseContext(), MyService.class));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
Manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.newbootservice"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<service android:name=".MyService"/>
<receiver android:name=".BootCompleteReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
<activity
android:name=".MainActivity"
android:label="#string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I have this application i want to install it (it is service) but i don't have an activity so i can't install it on my device to try it can someone help me please i guess this is livewallpaper for photo sequence like slideshow so can anyone tell me what should i do?
public class MainActivity extends WallpaperService{
Handler handler;
private boolean visible;
public void onCreate()
{
super.onCreate();
}
public void onDestroy()
{
super.onDestroy();
}
public Engine onCreateEngine()
{
return new CercleEngine();
}
class CercleEngine extends Engine
{
public Bitmap image1, image2, image3;
CercleEngine()
{
image1 = BitmapFactory.decodeResource(getResources(), R.drawable.greenww);
image2 = BitmapFactory.decodeResource(getResources(), R.drawable.redww);
image3 = BitmapFactory.decodeResource(getResources(), R.drawable.screen3);
}
public void onCreate(SurfaceHolder surfaceHolder)
{
super.onCreate(surfaceHolder);
}
public void onOffsetsChanged(float xOffset, float yOffset, float xStep, float yStep, int xPixels, int yPixels)
{
drawFrame();
}
void drawFrame()
{
final SurfaceHolder holder = getSurfaceHolder();
Canvas c = null;
try
{
c = holder.lockCanvas();
if (c != null)
{
c.drawBitmap(image1, 0, 0, null);
c.drawBitmap(image2, 0, 0, null);
c.drawBitmap(image3, 0, 0, null);
}
} finally
{
if (c != null) holder.unlockCanvasAndPost(c);
}
handler.removeCallbacks(drawRunner);
if (visible)
{
handler.postDelayed(drawRunner, 1000); // delay 1 sec
}
}
private final Runnable drawRunner = new Runnable()
{
#Override
public void run() {
drawFrame();
}
};
}
manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mike.wallpaper2">
<uses-permission android:name="android.permission.SET_WALLPAPER" />
<uses-permission android:name="android.permission.SET_WALLPAPER" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<service
android:enabled="true"
android:name=".MainActivity">
<intent-filter>
<action
android:name = "me.myapp.MyAppService">
</action>
</intent-filter>
</service>
<receiver android:enabled="true"
android:name=".BootUpReceiver">
<intent-filter> <action
android:name = "android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
</application>
BootUpReceiver
public class BootUpReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
/***** For start Service ****/
Intent myIntent = new Intent(context, MainActivity.class);
context.startService(myIntent);
}
add/update this code in manifest
<service
android:enabled="true"
android:name=".MainActivity">
<intent-filter>
<action
android:name = "com.example.mike.wallpaper2.MainActivity">
</action>
</intent-filter>
</service>
<receiver
android:enabled="true"
android:name=".BootReceiver">
<intent-filter>
<action android:name = "android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>
also add one new class
public class BootReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, MainActivity.class);
context.startService(service);
}
}
then follow steps mentioned in following example Start android application without activity
or restart your device this service start running
From EditConfiguration LUNCH OPTION (NOTHING)
I know this was asked already many times but I can't get this to work. I looked all around Android docs and other sources. I got this activity that has a broadcast receiver variable inside and starts a service as such in the constructor:
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(getApplicationContext(), "Received", Toast.LENGTH_SHORT).show();
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_compass);
Intent mIntent = new Intent(this, GPSTracker.class);
startService(mIntent);
}
#Override
public void onResume() {
super.onResume();
registerReceiver(mReceiver, new IntentFilter());
}
#Override
protected void onStop() {
unregisterReceiver(mReceiver);
super.onStop();
}
I put the service down in the manifest and I am sure it works properly. Any help will be appreciated.
Broadcast receiver is supposed to receive 2 floats from the service periodically.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="jemboy.compass" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<service
android:name=".GPSTracker"></service>
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
</activity>
<activity android:name=".CompassActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".OtherActivity"></activity>
</application>
In the activity
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(UPDATE_PLAYER)) {
updateMediaPlayerToggle();
} else if (intent.getAction().equals(BUFFERING)) {
showMediaPlayerBuffering();
}
}
};
private void registerBroadcastReceiver() {
LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(this);
IntentFilter updateIntentFilter = new IntentFilter();
updateIntentFilter.addAction(UPDATE_PLAYER);
updateIntentFilter.addAction(BUFFERING);
broadcastManager.registerReceiver(broadcastReceiver, updateIntentFilter);
}
in the service.
private void sendUpdatePlayerIntent() {
Log.d(TAG, "updatePlayerIntent");
Intent updatePlayerIntent = new Intent(MainActivity.UPDATE_PLAYER);
LocalBroadcastManager.getInstance(this).sendBroadcast(updatePlayerIntent);
}
Example from a media player service.
I can listen volume level in my VolumeService. This service listen to volume level in background.
My problem is: I can't control volume in lock screen.
I tried two different ways for volume control
First Way with CCL
Application Class:
public class CastApplication extends Application {
private static String APPLICATION_ID;
public static final double VOLUME_INCREMENT = 0.03;
#Override
public void onCreate() {
super.onCreate();
APPLICATION_ID = getString(R.string.app_id);
// initialize VideoCastManager
VideoCastManager.initialize(this, APPLICATION_ID, VideoCastControllerActivity.class, null).
setVolumeStep(VOLUME_INCREMENT).enableFeatures(VideoCastManager.FEATURE_NOTIFICATION |VideoCastManager.FEATURE_LOCKSCREEN |
VideoCastManager.FEATURE_WIFI_RECONNECT | VideoCastManager.FEATURE_CAPTIONS_PREFERENCE |VideoCastManager.FEATURE_DEBUGGING);
}
}
MainActivity:
public class MainActivity extends FragmentActivity {
private VideoCastManager mCastManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
VideoCastManager.checkGooglePlayServices(this);
mCastManager = VideoCastManager.getInstance();
Intent i1 = new Intent(this,VolumeService.class);
startService(i1);
}
#Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (mCastManager.onDispatchVolumeKeyEvent(event, CastApplication.VOLUME_INCREMENT)) {
return true;
}
return super.dispatchKeyEvent(event);
}
}
Second way without CCL (with RRC)
MainActivity:
public class MainActivity extends FragmentActivity {
ContentObserver mSettingsContentObserver;
RemoteControlClient remoteControlClient;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON);
AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
mAudioManager.requestAudioFocus(null, AudioManager.STREAM_RING,AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK);
RemoteControlClientCompat mRemoteControlClientCompat = new RemoteControlClientCompat(PendingIntent.getBroadcast(this.getApplicationContext(), 0,intent, 0));
RemoteControlHelper.registerRemoteControlClient(mAudioManager,mRemoteControlClientCompat);
remoteControlClient = new RemoteControlClient((PendingIntent.getBroadcast(this.getApplicationContext(), 0,intent, 0)));
MediaRouter.getInstance(this.getApplicationContext()).addRemoteControlClient(remoteControlClient);
Intent i1 = new Intent(this,VolumeService.class);
startService(i1);
}
}
Service and ContentObserver are same for both way
VolumeService:
public class VolumeService extends Service {
ContentObserver mSettingsContentObserver;
#Override
public void onCreate() {
super.onCreate();
mSettingsContentObserver = new SettingsContentObserver(this, new Handler());
getApplicationContext().getContentResolver().registerContentObserver(
android.provider.Settings.System.CONTENT_URI, true,mSettingsContentObserver);
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onDestroy() {
super.onDestroy();
getApplicationContext().getContentResolver().unregisterContentObserver(mSettingsContentObserver);
}
}
ContentObserver:
public class SettingsContentObserver extends ContentObserver {
int previousVolume;
Context context;
public SettingsContentObserver(Context c, Handler handler) {
super(handler);
context = c;
AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
previousVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_RING);
}
#Override
public boolean deliverSelfNotifications() {
return super.deliverSelfNotifications();
}
#Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
AudioManager audio = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
int currentVolume = audio.getStreamVolume(AudioManager.STREAM_RING);
int delta = previousVolume - currentVolume;
if (delta > 0) {
Log.i("MyService", "Volume is down");
previousVolume = currentVolume;
} else if (delta < 0) {
Log.i("MyService", "Volume is up");
previousVolume = currentVolume;
}
}
}
Manifest:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="18" />
<application
android:name="com.yns.volumelock.CastApplication"
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<activity
android:name=".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="com.google.android.libraries.cast.companionlibrary.remotecontrol.VideoIntentReceiver" >
<intent-filter>
<action android:name="android.media.AUDIO_BECOMING_NOISY" />
<action android:name="android.intent.action.MEDIA_BUTTON" />
<action android:name="com.google.android.libraries.cast.companionlibrary.action.toggleplayback" />
<action android:name="com.google.android.libraries.cast.companionlibrary.action.stop" />
</intent-filter>
</receiver>
<service
android:name="com.google.android.libraries.cast.companionlibrary.notification.VideoCastNotificationService"
android:exported="false" >
<intent-filter>
<action android:name="com.google.android.libraries.cast.companionlibrary.action.toggleplayback" />
<action android:name="com.google.android.libraries.cast.companionlibrary.action.stop" />
<action android:name="com.google.android.libraries.cast.companionlibrary.action.notificationvisibility" />
</intent-filter>
</service>
<service android:name="com.google.android.libraries.cast.companionlibrary.cast.reconnection.ReconnectionService" />
<activity
android:name="com.google.android.libraries.cast.companionlibrary.cast.tracks.CaptionsPreferenceActivity"
android:label="#string/action_settings" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
<service
android:name="com.yns.volumelock.VolumeService"
android:enabled="true" >
</service>
</application>
hy..i have a task to make my kitkat-nexus to act as a tag. I have ACS 122U as reader. i have read the program example in this site http://blog.opendatalab.de/hack/2013/11/07/android-host-card-emulation-with-acr122/. then i tryed the code on my own eclipse.
main activity :
public class MainActivity extends Activity implements OnMessageReceived, ReaderCallback {
private NfcAdapter nfcAdapter;
private ListView listView;
private IsoDepAdapter isoDepAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView)findViewById(R.id.listView);
isoDepAdapter = new IsoDepAdapter(getLayoutInflater());
listView.setAdapter(isoDepAdapter);
nfcAdapter = NfcAdapter.getDefaultAdapter(this);
Log.i("end of onCreate-----","onCreate HCE");
}
#Override
public void onResume() {
super.onResume();
//nfcAdapter.enableReaderMode(this, this, NfcAdapter.FLAG_READER_NFC_A | NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK,
// null);
//nfcAdapter.disableReaderMode(this); //tambahan poipo
Log.i("onResume---", "onResume");
}
#Override
public void onPause() {
super.onPause();
nfcAdapter.disableReaderMode(this);
Log.i("onPause---", "onPause");
}
#Override
public void onTagDiscovered(Tag tag) {
IsoDep isoDep = IsoDep.get(tag);
IsoDepTransceiver transceiver = new IsoDepTransceiver(isoDep, this);
Thread thread = new Thread(transceiver);
Log.i("dibawah thread", "ontagdiscovered");
thread.start();
}
#Override
public void onMessage(final byte[] message) {
runOnUiThread(new Runnable() {
#Override
public void run() {
isoDepAdapter.addMessage(new String(message));
Log.i("didlmrun---", "onMessage");
}
});
Log.i("diluarrun---", "onMessage");
}
#Override
public void onError(Exception exception) {
onMessage(exception.getMessage().getBytes());
}
}
hostapduservice :
...
...
...
#Override
public byte[] processCommandApdu(byte[] apdu, Bundle extras) {
if (selectAidApdu(apdu)) {
Log.i("HCEDEMO====", "Application selected====");
return getWelcomeMessage();
}
else {
Log.i("HCEDEMO======", "Received: =====" + new String(apdu));
return getNextMessage();
}
}
...
...
...
then in the manifest file :
<uses-sdk
android:minSdkVersion="19"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.NFC" />
<uses-feature android:name="FEATURE_NFC_HOST_CARD_EMULATION"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<service
android:name=".MyHostApduService"
android:exported="true"
android:permission="android.permission.BIND_NFC_SERVICE" >
<intent-filter>
<action android:name="android.nfc.cardemulation.action.HOST_APDU_SERVICE" />
</intent-filter>
<meta-data
android:name="android.nfc.cardemulation.host_apdu_service"
android:resource="#xml/apduservice" />
</service>
<activity
android:name="de.grundid.hcedemo.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>
</application>
ok,,when i ran the above source code,, i saw my acs122u blinking continously when i tapped my nexus near to it. but i didn't see the log.i(....) from hostapdu service. In the eclipse log cat, there were just some log.i from main activity. what should i do to bind that hostapdu service to main activity, so my nexus can act as a tag...???
thanks in advance... :-)