I have a written a program which intercepts incoming call using BroadcastReceiver. When I start my app, it starts working. Now the problem is when I restart my android phone, this BroadcastReceiver doesn't work. So I am assuming that I need to make a service for this. But I don't know when to start service and where to start BroadcastReceiver.
BroadcastReceiver code -
public class CallInterceptor extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "Service started", Toast.LENGTH_LONG).show();
Bundle extras = intent.getExtras();
if (extras != null) {
String state = extras.getString(TelephonyManager.EXTRA_STATE);
Toast.makeText(context, "Phone is " + state, Toast.LENGTH_LONG).show();
if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
String phoneNumber = extras
.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
Toast.makeText(context, "Call from " + phoneNumber, Toast.LENGTH_LONG).show();
//sendSMS(phoneNumber);
//toggle ringer mode
AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
toggleMode(am);
}
}
}
AndroidManifest file -
<receiver android:name="com.nagarro.service.CallInterceptor" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" >
<action android:name="android.intent.action.BOOT_COMPLETED" />
</action>
</intent-filter>
</receiver>
I don't think <action android:name="android.intent.action.BOOT_COMPLETED" /> is working.
Also, is it possible to do this without service? Please suggest approach which will help me to intercept call evertime (even after reboot).
You've improperly closed your first action tag. Your receiver section should look like:
<receiver android:name="com.nagarro.service.CallInterceptor" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
Also, you are not using a Service. You're using a Broadcast Receiver.
See this page for the basics Application Fundamentals.
Related
I searched the web for alot of time and I don't understand why my custom broadcast
isn't working.
<receiver
android:name=".myservice.MyReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
<action android:name="android.intent.action.ACTION_POWER_DISCONNECTED" />
<action android:name="android.intent.action.BATTERY_CHANGED"/>
<action android:name="android.intent.action.SCREEN_ON" />
<action android:name="android.intent.action.SCREEN_OFF" />
</intent-filter>
</receiver>
I don't it not recieve when I reconnet and disconnect the charger.
I did this for making thing simpale
public class MyReceiver extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent)
{
Toast.makeText(context,"Battery", Toast.LENGTH_SHORT).show();
Log.i("Recive", "Yes");
}
}
From docs:
ACTION_BATTERY_CHANGED
Broadcast Action: This is a sticky broadcast containing the charging state, level, and other information about the battery. See BatteryManager for documentation on the contents of the Intent.
You cannot receive this through components declared in manifests, only by explicitly registering for it with Context.registerReceiver(). See ACTION_BATTERY_LOW, ACTION_BATTERY_OKAY, ACTION_POWER_CONNECTED, and ACTION_POWER_DISCONNECTED for distinct battery-related broadcasts that are sent and can be received through manifest receivers
So, you cannot use this BroadcastReceiver decalred in Manifest, only registering explicitly from your context.
Also, your power connection BroadcastReceiver seems correct. Try to separate it into another BroadcastReceiver, maybe action ACTION_BATTERY_CHANGED is interfering with other actions.
This is my declared BroadcastReceiver which I use and it's working in my app.
<receiver android:name=".PowerConnectionBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.ACTION_POWER_CONNECTED"/>
<action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"/>
</intent-filter>
</receiver>
PowerConnectionBroadcastReceiver
public class PowerConnectionBroadcastReceiver extends BroadcastReceiver {
private static final String TAG = "PowerRcvr";
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_POWER_CONNECTED)) {
Log.d(TAG, "Device is charging");
} else if (action.equals(Intent.ACTION_POWER_DISCONNECTED)) {
Log.d(TAG, "Device is NOT charging");
} else {
Log.d(TAG, "Unable to check if device is charging or not");
}
}
}
NOTE: This code is working on Android 8 with targetSdkVersion 25 or lower.
In targetSdkVersion 26 or higher most of BroadcastReceivers doesn't work through Manifest due to background limitations. Here are documentation (thanks to Pawel) about that. So your IntentFilters wont work. To keep it working you can download your targetSdkVersion to 25 or lower.
I have the app which must start on device' boot. It works well but the problem is that when the app finishes booting, the screen is already dark. How can I make it not fall asleep?
My Receiver:
<receiver
android:enabled="true"
android:exported="true"
android:name=".view.receivers.BootReceiver"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
public class BootReceiver extends BroadcastReceiver {
private final static String LOG_TAG = BootReceiver.class.getSimpleName();
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Log.i(LOG_TAG, "Loading after booting...");
Intent startCalendarActivityIntent = new Intent(context, CalendarActivity.class);
startCalendarActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(startCalendarActivityIntent);
} else {
Log.e(LOG_TAG, "Error while restarting after boot.");
}
}
}
On this device is Android 6.0 .
You can either use wakelocks, which need certain permissions, or you can put a flag in your onCreate method, which according to the docs does not require a permission.
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
The wakelock documentation gave the example above.
I want to make an application in which once the application starts, it will show two button(start and stop button) and once the user clicks the start button the call function will be blocked for the time period till the user again start the application and click the stop button to stop this function. any help please its urgent
in short I Will tell I want to block the outgoing call from my phone by using this activity only
please is there any way to do so???
You can block the outgoing call using the setResultData(null) function in the onReceive method of the Broaadcast receiver.
public class BlockOutgoing extends BroadcastReceiver
{
String number;
#Override
public void onReceive(Context context, Intent intent)
{
Log.d("12280", "asdasNumber is-->> " + number);
number = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
setResultData(null);
Toast.makeText(context, "Outgoing Call Blocked" , 5000).show();
}
}
In the manifest file, you need to register the receiver like this,
<receiver
android:name=".BlockOutgoing"
android:label="#string/app_name" >
<intent-filter android:priority="1">
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
Also define the permission to intercept the outgoing call,
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />
Edit-
To unregister a broadcast receiver, follow this link
public class BlockOutgoing extends BroadcastReceiver {
String number;
#SuppressLint("WrongConstant")
#Override
public void onReceive(Context context, Intent intent)
{
// Log.d("12280", "asdasNumber is-->> " + number);
number = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
setResultData(null);
Toast.makeText(context, "Outgoing Call Blocked" , 5000).show();
}
}
<receiver
android:name=".BlockOutgoing"
android:label="#string/app_name" >
<intent-filter android:priority="1">
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
In my app i want to detect incoming call and i want to hide default incoming call layout with my custom layout,far now i have managed to get the state of incoming call but i'm not able to hide the default incoming call screen...below is my code and my android manifest file...any help will be appreciated..
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.i("DEBUG", "on recive called");
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
String number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
if (TelephonyManager.EXTRA_STATE_RINGING.equals(state))
{
abortBroadcast();
Log.d("MPR", "Its Ringing [" + number + "]");
//start activity
Intent i = new Intent();
i.setClassName("com.ezest.callerid", "com.ezest.callerid.CustomCallActivity");
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
if (TelephonyManager.EXTRA_STATE_IDLE.equals(state))
{
Log.d("MPR", "Its Idle");
}
if (TelephonyManager.EXTRA_STATE_OFFHOOK.equals(state))
{
Log.d("MPR", "Its OffHook");
}
}
Manifest
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<receiver android:name="MYPhoneStateListener">
<intent-filter android:priority="999999">
<action android:name="android.intent.action.PHONE_STATE"></action>
</intent-filter>
</receiver>
<activity
android:label="#string/app_name"
android:name=".CallerIDActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="CustomCallActivity">
</activity>
</application>
when defined action is happened android operating system send broadcast to all defined broadcastreceiver for this action. it does this job according to priority order. I can see you have done it. copy that code where you want to cancel broadcast.
abortBroadcast()
Android operating system will stop broadcasting to other broadcastreceivers
In my i have a receiver to predict incoming calls,Once i have the call i need bring my app to front of screen(Over call accept and reject scree), the code for receiver is shown below,
public class IncomingCallReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
if(null == bundle)
return;
Log.i("IncomingCallReceiver",bundle.toString());
String state = bundle.getString(TelephonyManager.EXTRA_STATE);
Log.i("IncomingCallReceiver","State: "+ state);
if(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING))
{
String phonenumber = bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
Log.i("IncomingCallReceiver","Incomng Number: " + phonenumber);
String info = "Detect Calls sample application\nIncoming number: " + phonenumber;
Intent intent2open = new Intent(context, com.varma.samples.detectcalls.ui.MainActivity.class);
intent2open.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent2open.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
String name = "KEY";
String value = "String you want to pass";
intent2open.putExtra(name, value);
context.startActivity(intent2open);
Toast.makeText(context, info, Toast.LENGTH_LONG).show();
}
}
}
in my manifest i added following parameters,
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name="com.varma.samples.detectcalls.ui.MainActivity"
android:label="#string/app_name" android:launchMode="singleTop" android:taskAffinity="#android:string/no">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.varma.samples.detectcalls.receivers.OutgoingCallReceiver">
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL"/>
</intent-filter>
</receiver>
<receiver android:name="com.varma.samples.detectcalls.receivers.IncomingCallReceiver">
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE"/>
</intent-filter>
</receiver>
</application>
<uses-sdk android:minSdkVersion="3" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
But when i launch the activity the receiver is started to listen incoming calls,then i close all instance of app in Settings, when call is coming for first time, my app is bring front over answer & reject screen.
Then i push back button to reject my call. Then when i make a call again the activity was not bring in front of my dialing screen. I don`t know where is the problem.