I have a BroadcastReceiver that is not being instantiated or called, any help on what I'm doing is appreciated.
It should be responding to wifi connection/disconnection events but isn't, and it's superclass constructor is not even being called either.
MainActivity:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
BroadcastReceiver:
public class ConnectivityChangeReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Log.v(TAG, "action: " + intent.getAction());
Log.v(TAG, "component: " + intent.getComponent());
}
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test">
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<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=".ConnectivityChangeReceiver"
android:enabled="true">
<intent-filter>
<action android:name="android.net.ConnectivityManager.CONNECTIVITY_ACTION" />
</intent-filter>
</receiver>
</application>
</manifest>
The <action> name is set incorrectly. It should be: android.net.conn.CONNECTIVITY_CHANGE. See the "Constant Value" as described here.
Related
Does not display toast message,
I want to show me a toast message when I receive sms but it doesn't work
my Manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.video60">
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission-sdk-23 android:name="android.permission.READ_PHONE_STATE"/>
<application
android:name=".G"
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=".smsReciver">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED"></action>
</intent-filter>
</receiver>
</application>
</manifest>
my code
public class smsReciver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(G.context,"sms recived in reza",Toast.LENGTH_LONG).show();
}
}
class G
public class G extends Application {
public static Context context;
#Override
public void onCreate() {
super.onCreate();
context=getApplicationContext();
}
}
put this on your onReceive function
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),"sms recived in reza",Toast.LENGTH_SHORT).show();
}
});
In my application I am trying to receive broadcast Media_Scanner_Finished. But the receiver is not getting called.
Here is my code-
'<?xml version="1.0" encoding="utf-8"?>'
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="objectdistance.ankeshkjaisansaria.ram.sita.MyApp">
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL"/>
<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="objectdistance.ankeshkjaisansaria.ram.sita.myApp.broadcastreceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MEDIA_SCANNER_FINISHED"/>
<action android:name="android.intent.action.MEDIA_SCANNER_STARTED"/>
<action android:name="android.intent.action.MEDIA_SCANNER_STARTED"/>
<data android:scheme="file" />
</intent-filter>
</receiver>
</application>
</manifest>
In my Broadcast receiver class:-
public class broadcastreceiver extends BroadcastReceiver {
BroadcastReceiver mMediaScannerReceiver;
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.i("INFO", "Enter BroadcastReceiver");
}
}
I think the issue is relating to permission required in manifest file to get access to Media_Scanner broadcast.
One more thing I would like to clear is that :- Does Media_Scanner_Started gets called when content provider Media Image database gets updated ?
Add the receiver in code rather than in the manifest:
final IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
filter.addDataScheme("file");
scannerStartedReceiver = new BroadcastReceiver() {
#Override
public void onReceive(final Context context, final Intent intent) {
}
}
I followed a tutorial on Receiving sms using BroadcastReceiver
https://www.youtube.com/watch?v=h-zYXVODiPo
I used exactly the same codes. Enabled Telnet client. Does my device need to be rooted first? I don't know the problem. Please help.
Here's my MainActivity
public class MainActivity extends Activity {
BroadcastReceiver receiver;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
IntentFilter filter = new IntentFilter("android.provider.Telephony.SMS_RECEIVED");
receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context arr0, Intent arr1) {
processReceiver(arr0,arr1);
}
};
registerReceiver(receiver,filter);
}
public void onDestroy(){
super.onDestroy();
unregisterReceiver(receiver);
}
public void processReceiver(Context context,Intent intent){
Toast.makeText(context,"RECEIVED",Toast.LENGTH_LONG).show();
TextView lbs = (TextView)findViewById(R.id.textView1);
Bundle bundle = intent.getExtras();
Object[] objArr = (Object[])bundle.get("pdus");
String sms="";
for(int i=0;i>objArr.length;i++){
SmsMessage smsMsg = SmsMessage.createFromPdu((byte[])objArr[i]);
String smsBody = smsMsg.getMessageBody();
String senderNumber = smsMsg.getDisplayOriginatingAddress();
sms+= "From: "+senderNumber+"\nContent: "+smsBody+"\n";
}
lbs.setText(sms);
}
Here's my Manifest.XML
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="gavadev.com.smsreceiver">
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21"/>
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<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"
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>
<activity android:name=".Main2Activity"></activity>
</application>
</manifest>
Use a Broadcast Receiver which will not be unregistered when destroying the activity:
public class MyReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED"))
{
// your processing will go here...
}
}
}
Register the receiver via manifest file as following:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.broadcastreceiverpremier"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.broadcastreceiverpremier.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="MyReceiver">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED"/>
</intent-filter>
</receiver>
</application>
I have a PackageBroadcastReceiver running ok while the app is in the background. I need it to keep listening to packages added/removed when it is closed. But, it is not.
Is there any way to do this with a BroadcastReceiver or should I move to a service?
Here the code:
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="23" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.cresan.antivirus.StockingActivity"
android:label="#string/app_name"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.tech.applications.coretools.advertising.PackageBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.PACKAGE_INSTALL" />
<action android:name="android.intent.action.PACKAGE_ADDED" />
<data android:scheme="package"/>
</intent-filter>
</receiver>
</application>
And my PackageBroadcastReceiver:
public class PackageBroadcastReceiver extends BroadcastReceiver
{
static IPackageChangesListener _listener;
static public void setPackageBroadcastListener(IPackageChangesListener listener)
{
_listener=listener;
}
#Override
public void onReceive(Context ctx, Intent intent)
{
if(_listener!=null && Intent.ACTION_PACKAGE_ADDED.equals(intent.getAction()))
_listener.OnPackageAdded(intent);
if(_listener!=null && Intent.ACTION_PACKAGE_REMOVED.equals(intent.getAction()))
_listener.OnPackageRemoved(intent);
}
}
Cheers.
You will definitely need to implement a background service to do this. See the developer guide.
You can then programmatically register a BroadcastReceiver in your service:
private PackageBroadcastReceiver packageBroadcastReceiver;
#Override
public void onCreate() {
super.onCreate();
this.packageBroadcastReceiver = new PackageBroadcastReceiver();
this.packageBroadcastReceiver.setPackageBroadcastListener(new IPackageChangesListener() {
public void OnPackageAdded(Intent i) {
//do something here- probably start an activity
}
...
});
IntentFilter packageFilter = new IntentFilter("android.intent.action.PACKAGE_ADDED");
packageFilter.addAction("android.intent.action.PACKAGE_INSTALL");
packageFilter.addDataScheme("package");
this.registerReceiver(this.packageBroadcastReceiver, packageFilter);
}
#Override
public void onDestroy(){
super.onDestroy();
this.unregisterReceiver(this.packageBroadcastReceiver);
}
Try registering broadcast receiver in service. After activity is destroyed, receiver will be destroyed to so you will not get broadcast event.
When I create class that extends BrodcastReceiver and register it.
Error Unable to destroy activity, Receiver not registered: null onDestroy() function in MainActivity When call unregisterReceiver.
onCreate():
ConnectionChangeReceiver connectionChangeReceiver = new ConnectionChangeReceiver();
IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(connectionChangeReceiver, filter);
onDestroy():
#Override
protected void onDestroy() {
Log.v("YourActivity", "onDestroy");
unregisterReceiver(connectionChangeReceiver);
super.onDestroy();
}
ConnectionChangeReceiver Class:
public class ConnectionChangeReceiver extends BroadcastReceiver
{
#Override
public void onReceive( Context context, Intent intent )
{
Toast.makeText(context, "CONN", Toast.LENGTH_SHORT).show();
}
}
manifest: UPDATE: After adding <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mamrezo.mapapp" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.mamrezo.mapapp.MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".ConnectionChangeReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
</application>
</manifest>
I always register the receiver in the onStart and unregister it in the onStop. I knew this thanks to this answer : https://stackoverflow.com/a/24391706/1203797
If its still not working in your case, simply wrapunregisterReceiver(connectionChangeReceiver); a try-catch block would be the answer, as stated in the link i posted above.
Or you can register it in the manifest, example :
<receiver android:name=".ConnectionChangeReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>