CODEWITHSUNDEEP
javaandroid
John
John

Reputation: 89

Update or append a TextView from a Broadcastreceiver

I am trying to append/update information in a TextView from a BroadcastReceiver. What would be the right way to do this? I have put in in my Manifest to register the phone state:

    <receiver android:name="RingTypeBroadcastReceiver" >
        <intent-filter>
            <action android:name= "android.intent.action.PHONE_STATE">               </action>
        </intent-filter>
    </receiver>

Next I want to grab the phone state that the receiver picked up, increment a counter. I want to be able to append/update this information on a textview called txtResults that I have on my Activity.

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;
import android.widget.Toast;

public class RingTypeBroadcastReceiver extends BroadcastReceiver{

int counterCall = 0;
int counterIdleOrOffHook = 0;

@Override
public void onReceive(Context context, Intent intent) {
    if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(TelephonyManager.EXTRA_STATE_RINGING)) {
    String incomingNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
        counterCall = counterCall + 1;
    }
    if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
            TelephonyManager.EXTRA_STATE_IDLE)
            || intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
                    TelephonyManager.EXTRA_STATE_OFFHOOK)) {
        counterIdleOrOffHook = counterIdleOrOffHook + 1;
    }
}
}

Upvotes: 0

Views: 1247

Answers (1)

Chad Bingham
Chad Bingham

Reputation: 33856

Put your broadcast receiver inside your activity that is setting the text. (sub class it)

Here is an untested example. It might need slight modification, but I have done something like this before so it will work.

public class YourActivity extends Activity {

private TextView txtResults;

....do activity stuff....

public static class RingTypeBroadcastReceiver extends BroadcastReceiver{

int counterCall = 0;
int counterIdleOrOffHook = 0;

   @Override
   public void onReceive(Context context, Intent intent) {
    if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(TelephonyManager.EXTRA_STATE_RINGING)) {
     String incomingNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
        counterCall = counterCall + 1;
    }
    if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
            TelephonyManager.EXTRA_STATE_IDLE)
            || intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
                    TelephonyManager.EXTRA_STATE_OFFHOOK)) {
        counterIdleOrOffHook = counterIdleOrOffHook + 1;
    }

   //here you can set your text view. But check that it is not null first! 
   if(txtResults != null){
       txtResults.setText("whatever");
   }
  }
}

Then, update your Manifest so it will point to the Broadcast receiver:

 <receiver android:name="YourActivity$RingTypeBroadcastReceiver"> 
    <intent-filter> 
        <action android:name="android.intent.action.AIRPLANE_MODE"/> 
    </intent-filter> 
 </receiver>

As you can see, you have your Activity followed by a $ then your broadcast receiver. That tells the manifest to look inside your activity.

Also note: If your activity is in a package below your app's package name (com.example.yourapp) you will need to add that to your manifest. So for instance, if your activity was in com.example.yourapp/activity you would need to change the name in the manifest to .activity.YourActivity$RingTypeBroadcastReceiver. It is just everything after your apps package name, starting with ..

Upvotes: 1

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