I have a broadcast receiver in my app which is fired every time the user gets an incoming call. Now, when it happens, I need the broadcast receiver to invoke a specific method in a specific activity. Now, I tried to make this method static and therefore available, but something tells me it is a very bad idea.
Accordingly, I tried to instantiate the broadcast receiver inside my activity without declaring it in my manifest but the problem is - when the app is off, the activity is not exist and therefore I can't invoke my method.
So my question is - How can I invoke this method when the broadcast receiver is fired up, without making it "public static"?
Here is my activity code(I have deleted the irrelevant parts)
package com.silverfix.ringo.activities;
import com.silverfix.ringo.R;
import com.silverfix.ringo.activities.fragments.DataManagerFragment;
import android.app.ActionBar;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
public class RingtonesActivity extends Activity{
private DataManagerFragment dataManagerFragment;
private IntentFilter filter;
private BroadcastReceiver phoneCall;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ringtones);
ActionBar ab = getActionBar();
ab.setDisplayShowTitleEnabled(false);
ab.setDisplayHomeAsUpEnabled(true);
dataManagerFragment = new DataManagerFragment();
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.add(dataManagerFragment, "DataManagerFragment");
ft.commit();
filter = new IntentFilter();
filter.addAction("android.intent.action.PHONE_STATE");
phoneCall = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
dataManagerFragment.act();
}
};
registerReceiver(phoneCall, filter);
}
}
You can use observers , like
public class MyReceiver extends BroadcastReceiver {
public MyReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
ObservableObject.getInstance().updateValue(intent);
}
}
public class MainActivity extends Activity implements Observer {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ObservableObject.getInstance().addObserver(this);
}
@Override
public void update(Observable observable, Object data) {
Toast.makeText(this, String.valueOf("activity observer " + data), Toast.LENGTH_SHORT).show();
}
}
public class ObservableObject extends Observable {
private static ObservableObject instance = new ObservableObject();
public static ObservableObject getInstance() {
return instance;
}
private ObservableObject() {
}
public void updateValue(Object data) {
synchronized (this) {
setChanged();
notifyObservers(data);
}
}
}
Receiver can be used via manifest. ObservableObject - must be singleton.