I have this Service class:
public class BluetoothService extends Service {
private static Activity mActivity;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
this.registerReceiver(bluetoothReceiver, intentFilter);
}
#Override
public void onDestroy() {
if (bluetoothReceiver != null) {
this.unregisterReceiver(bluetoothReceiver);
}
}
#Override
public void onStart(Intent intent, int startid) {
//
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
public static BroadcastReceiver bluetoothReceiver = new BroadcastReceiver(){
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
TextView tvStatus = (TextView) mActivity.findViewById(R.id.tvtatus);
Messaging.appendMessage(tvStatus, Bluetooth.getDeviceState(state));
if (Bluetooth.isBluetoothEnabled()) {
Messaging.appendMessage(tvStatus, Bluetooth.showMessage());
}
}
}
};
}
And in my Activity class, I have this:
public class MainActivity extends Activity {
private TextView tvStatus;
private Intent intentBluetooth;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvStatus = (TextView)findViewById(R.id.tvtatus);
intentBluetooth = new Intent(this, BluetoothService.class);
startService(intentBluetooth);
}
}
The BroadcastReceiver method (bluetoothReceiver) in the Service class is never called. I don't know why. If I have the IntentFilter and the BroadcastReceiver codes above all in an Activity, then it works - but not in a [separate] Service. I'm stumped.
My AndroidManifest.xml is:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.onegoal.androidexample"
android:versionCode="1"
android:versionName="1.0.0"
android:installLocation="auto"
android:hardwareAccelerated="true">
<uses-sdk android:minSdkVersion="7" android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-feature android:name="android.hardware.bluetooth" android:required="false" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme"
android:debuggable="true" >
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".BluetoothService">
</service>
</application>
</manifest>
I'm new to Android so what I'm doing may not be the best. Hope someone can help me.
maybe the fact that your receiver is static causing the problem.
BroadcastReceiver should never be static. it can cause lots of problems.
other really bad design problem with your code - holding reference to activity inside service, and using it to modify views is really wrong thing to do. it can cause easily to memory leek.
the right why to communicate between Service and Activity is by implement android's Messanger, or sending broadcasts between them via BroadcastReceiver.
if you'll listen to my advice - you won't be have to make your receiver static (I guess you've made it static only because you are using the mActivity static instance inside)
and I'm pretty sure it will solve your problem
you can read about Messanger here: http://developer.android.com/reference/android/os/Messenger.html
sure you'll find lots of usage examples in the net.
example of broadcasting updates to the activity from service:
public class MyService extends Service {
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
super.onCreate();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
this.registerReceiver(bluetoothReceiver, intentFilter);
}
#Override
public void onDestroy() {
if (bluetoothReceiver != null) {
this.unregisterReceiver(bluetoothReceiver);
}
super.onDestroy();
}
public BroadcastReceiver bluetoothReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
updateUIWithNewState(state);
}
}
};
protected void updateUIWithNewState(int state) {
Intent intent = new Intent("serviceUpdateReceivedAction");
intent.putExtra("state", state);
sendBroadcast(intent);
}
}
and that's the activity:
public class MyActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = new Intent(this, MyService.class);
startService(intent);
}
#Override
protected void onResume() {
super.onResume();
registerReceiver(mServiceUpdatesReceiver, new IntentFilter("serviceUpdateReceivedAction"));
}
#Override
protected void onPause() {
unregisterReceiver(mServiceUpdatesReceiver);
super.onPause();
}
private BroadcastReceiver mServiceUpdatesReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
int state = intent.getIntExtra("state", -1);
// do what ever you want in the UI according to the state
}
};
}
Related
I have tried this code but it's not working. Does anybody have any different solution? I have tried many ways like the below one from Stack Overflow but none of them is working.
manifest.xml
<receiver android:name=".ScreenReceiver">
<intent-filter>
<action android:name="android.intent.action.SCREEN_OFF"/>
<action android:name="android.intent.action.SCREEN_ON"/>
</intent-filter>
</receiver>
screenreceiver
public class ScreenReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_SCREEN_ON))
{
Intent intent = new Intent();
intent.setClass(context, ScreenLockActivity.class);
startActivity(intent);
}
}
}
To listen to screen on/off, your app should run by time and register Broadcast receiver to OS programmatically.
ScreenOnOffService.java
public class ScreenOnOffService extends Service {
public IBinder onBind(Intent intent) {
return null;
}
public void onCreate() {
super.onCreate();
Log.i("ScreenOnOffService", "onCreate: ");
IntentFilter intentFilter = new IntentFilter();
// intentFilter.addAction("android.intent.action.SCREEN_OFF");
intentFilter.addAction("android.intent.action.SCREEN_ON");
registerReceiver(ScreenOnReceiver.newInstance(), intentFilter);
}
public void onDestroy() {
super.onDestroy();
Log.i("ScreenOnOffService", "onDestroy: ");
unregisterReceiver(ScreenOnReceiver.newInstance());
// startService(new Intent(this,ScreenOnOffService.class));
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
return Service.START_STICKY;
}
}
ScreenOnReceiver.java
public class ScreenOnReceiver extends BroadcastReceiver {
public static final String TAG = "ScreenOn";
public static volatile ScreenOnReceiver screenOn;
public static ScreenOnReceiver newInstance() {
if (screenOn == null) {
screenOn = new ScreenOnReceiver();
}
return screenOn;
}
#Override
public void onReceive(Context context, Intent intent) {
Log.i("hieuN", "intent: " + intent.getAction());
// do work. start activity.
}
}
Start service in activity
Intent service = new Intent(this, ScreenOnOffService.class);
startService(service);
i am new on android .
I am trying register the BroadcastReceiver in code at my activity. this is my code:
MyReciever class:
public class MyReciever extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Log.i("===>", "onReceive: "+ intent.getAction());
Toast.makeText(context, "I got it "+ intent.getIntExtra("MyValue",0), Toast.LENGTH_SHORT).show();
}
}
myActivity:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myReciever = new MyReciever();
intentFilter = new IntentFilter();
intentFilter.addAction("test");
}
#Override
protected void onResume() {
registerReceiver(myReciever, intentFilter);
super.onResume();
}
}
Manifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.safarayaneh.mybroadcastreciever">
<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>
</application>
</manifest>
when i run my app, nothing happen and toast not comes up! I've read this and this article and i don't understand that where is my problem.
public class MainActivity extends AppCompatActivity {
private IntentFilter intentFilter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//this line makes the broadcastreceiver
BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "I got it "+ intent.getIntExtra("MyValue",0), Toast.LENGTH_SHORT).show();
}
};
//this line register broadcastreceiver
LocalBroadcastManager.getInstance(getContext()).registerReceiver(mBroadcastReceiver, new IntentFilter("test"));
//this line calls the broadcastreceiver
LocalBroadcastManager.getInstance(this).sendBroadcast(new Intent("test"));
}
}
Register your broadCast receiver in OnResume and unregister it in OnPause like this
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myReciever = new MyReciever();
intentFilter = new IntentFilter();
intentFilter.addAction("test");
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
unregisterReceiver(reMyreceive);
}
#Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
registerReceiver(reMyreceive, filter);
}
I am trying to create a service that will run on bootup, however when trying it in my emulator the log is not showing my message through log tag, so clearly something is wrong.
Here is my code.
service.java
public class service extends Service {
private static final String TAG = "myapp.mycomp";
public service() {
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, "Service started");
Runnable r = new Runnable() {
#Override
public void run() {
/** something to do **/
}
};
Thread service = new Thread(r);
service.start();
return Service.START_STICKY;
}
#Override
public void onDestroy() {
Log.i(TAG, "Service stopped");
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
MyReceiver.java
public class MyReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Intent myIntent = new Intent(context, service.class);
context.startService(myIntent);
}
}
XML manifest intent
<receiver android:name=".MyReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
XML manifest permission
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
I am new to android.
My project is having one activity and one service. My service is having one broadcast receiver and activity is having broadcast sender which is in PeriodSender method .Dynamically when i am registering the receiver then at the start of the service it is not invoking but if i send some thing after few moment then it invokes.
But I want to register it in Manifest ,I have included the receiver details in Manifest but the receiver is not invoking . My receiver class name is MyReceiver21 and the intent action is MY_ACTION1. actually I want my broadcast receiver to be registered at the starting it self.
Following is my Manifest file
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.experiment.Test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="3"
android:targetSdkVersion="3" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.experiment.Test.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=".MyReceiver21" >
<intent-filter>
<action android:name="com.experiment.Test.MainActivity.MY_ACTION1" />
</intent-filter>
</receiver>
<service
android:name="Myservice21"
android:enabled="true" />
</application>
</manifest>
my activity code is
public class MainActivity extends Activity {
MediaPlayer OurSong;
Context SavedThis=this;
int i=0;
public Handler handler1 = new Handler();
public Handler handler2= new Handler();
Button Start;
Button Stop;
Button Button21;
Button StopButton;
public int GProgreess=0;
int Rc=0;
int BitCount=0;
int SeekPos=0;
int Period=500;
MyReceiver myReceiver;
final static String MY_ACTION1 = "MY_ACTION1";
public int Data=0;
public int beat=0;
int BreakVar=0;
Thread myThread ;
static public TextView text1,text2,text3,text4;
private SeekBar bar;
private TextView textProgress,textAction;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
StopButton=(Button)findViewById(R.id.buttonstop);
StopButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
stopService(new Intent(SavedThis,Myservice21.class));
BitCount=0;
}/****End of on clk******/
});/*****End of set on clk listener*****/
Button21.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
Rc=0;
BitCount=13;
stopService(new Intent(SavedThis,Myservice25.class));
SystemClock.sleep(200);
startService(new Intent(SavedThis,Myservice21.class));
PeriodSender();
}/****End of on clk******/
});/*****End of set on clk listener*****/
}
public void PeriodSender()
{
Intent intent1 = new Intent();
intent1.setAction("MY_ACTION1");
intent1.putExtra("kz", Period);
sendBroadcast(intent1);
text3.setText(""+Period);
Toast.makeText(getApplicationContext(), "PeriodSent",Toast.LENGTH_SHORT).show();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
my service class
public class Myservice21 extends Service {
int BitCount=0;
int Rc=0;
int Period=500;
Intent intent = new Intent();
MyReceiver21 myReceiver21;
public Handler handler1 = new Handler();
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
public void onCreate()
{
intent.setAction(MY_ACTION);
myReceiver21 = new MyReceiver21();
IntentFilter intentFilter1 = new IntentFilter();
intentFilter1.addAction(com.experiment.Test.MainActivity.MY_ACTION1);
registerReceiver(myReceiver21, intentFilter1);
Intent intent1 = new Intent(Myservice21.this,MainActivity.class);
startService(intent1);
handler1.post(runnable1);
}
public class MyReceiver21 extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent)
{
int data = intent.getIntExtra("kz", 0);
Period=data;
Toast.makeText(getApplicationContext(), "PeriodRceived21",Toast.LENGTH_SHORT).show();
}
}
public void onStart(Intent intent,int StartId)
{
Rc=0;
}
public void onDestroy()
{
}
}
can any one help me to register the receiver in manifest. Thanks in advance
You don't have to add the intent filter for your own broadcasts. Just register the service for that broadcasts with registerReceiver() when the service is started.
Note, that you have to start the service manually when your App starts, for instance in the MainActivity.onCreate():
startService(new Intent(this, Myservice21.class));
When the MainActivity has been created, it will start the service, which itself registers for BroadcastIntents and starts listening for them. This should work.
I use AIDL interface IExtendedNetworkService to get USSD code. But application only work after reboot device. I tried bindservice after install app but it didn't work. So my problem is how way to bind service without reboot device . This is my code:
interface:
package com.android.internal.telephony;
interface IExtendedNetworkService {
void setMmiString(String number);
CharSequence getMmiRunningText();
CharSequence getUserMessage(CharSequence text);
void clearMmiString();
}
Service
public class CDUSSDService extends Service {
private String TAG = "THANG-NGUYEN";
private boolean mActive = false;
BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_INSERT)) {
// activity wishes to listen to USSD returns, so activate this
mActive = true;
Log.d(TAG, "activate ussd listener");
} else if (intent.getAction().equals(Intent.ACTION_DELETE)) {
mActive = false;
Log.d(TAG, "deactivate ussd listener");
}
}
};
private final IExtendedNetworkService.Stub mBinder = new IExtendedNetworkService.Stub() {
public void clearMmiString() throws RemoteException {
Log.d(TAG, "called clear");
}
public void setMmiString(String number) throws RemoteException {
Log.d(TAG, "setMmiString:" + number);
}
public CharSequence getMmiRunningText() throws RemoteException {
if (mActive == true) {
return null;
}
return "USSD Running";
}
public CharSequence getUserMessage(CharSequence text)
throws RemoteException {
Log.d(TAG, "get user message " + text);
if (mActive == false) {
// listener is still inactive, so return whatever we got
Log.d(TAG, "inactive " + text);
return text;
}
// listener is active, so broadcast data and suppress it from
// default behavior
// build data to send with intent for activity, format URI as per
// RFC 2396
Uri ussdDataUri = new Uri.Builder()
.scheme(getBaseContext().getString(R.string.uri_scheme))
.authority(
getBaseContext().getString(R.string.uri_authority))
.path(getBaseContext().getString(R.string.uri_path))
.appendQueryParameter(
getBaseContext().getString(R.string.uri_param_name),
text.toString()).build();
sendBroadcast(new Intent(Intent.ACTION_GET_CONTENT, ussdDataUri));
mActive = false;
return null;
}
};
public void onCreate() {
Log.i(TAG, "called onCreate");
};
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, "called onStartCommand");
return super.onStartCommand(intent, flags, startId);
}
#Override
public IBinder onBind(Intent intent) {
Log.i(TAG, "called onbind");
// the insert/delete intents will be fired by activity to
// activate/deactivate listener since service cannot be stopped
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_INSERT);
filter.addAction(Intent.ACTION_DELETE);
filter.addDataScheme(getBaseContext().getString(R.string.uri_scheme));
filter.addDataAuthority(
getBaseContext().getString(R.string.uri_authority), null);
filter.addDataPath(getBaseContext().getString(R.string.uri_path),
PatternMatcher.PATTERN_LITERAL);
registerReceiver(receiver, filter);
return mBinder;
}
}
MainActivity:
public class MainActivity extends Activity {
private Button btnCheckUSSD;
private Context mContext;
private IExtendedNetworkService mService;
private EditText inputUSSD;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mContext = this;
setContentView(R.layout.activity_main);
btnCheckUSSD = (Button) findViewById(R.id.btn_check);
inputUSSD = (EditText) findViewById(R.id.input_ussd);
btnCheckUSSD.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
if (!inputUSSD.getText().toString().isEmpty()) {
Intent service = new Intent(
"com.android.ussd.IExtendedNetworkService");
bindService(service, mConnecton, Context.BIND_AUTO_CREATE);
startActivity(new Intent("android.intent.action.CALL", Uri
.parse("tel:" + inputUSSD.getText().toString()
+ Uri.encode("#"))));
}
}
});
}
ServiceConnection mConnecton = new ServiceConnection() {
#Override
public void onServiceDisconnected(ComponentName name) {
mService = null;
}
#Override
public void onServiceConnected(ComponentName name, IBinder iBinder) {
mService = IExtendedNetworkService.Stub
.asInterface((IBinder) iBinder);
}
};
protected void onDestroy() {
super.onDestroy();
Log.d("THANG-NGUYEN", "onDestroy");
unbindService(mConnecton);
}
}
Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="info.example.checkussdcode"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="info.example.checkussdcode.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>
<service
android:name="info.example.checkussdcode.service.UssdCodeService"
android:process=":remote" >
<intent-filter>
<action android:name="com.android.ussd.IExtendedNetworkService" >
</action>
</intent-filter>
</service>
<receiver android:name="info.example.checkussdcode.RebootReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
</manifest>