@Override
public void onCreate(Bundle savedInstanceState) {
...
// Register to receive messages.
// We are registering an observer (mMessageReceiver) to receive Intents
// with actions named "custom-event-name".
LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
new IntentFilter("custom-event-name"));
}
// Our handler for received Intents. This will be called whenever an Intent
// with an action named "custom-event-name" is broadcasted.
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// Get extra data included in the Intent
String message = intent.getStringExtra("message");
Log.d("receiver", "Got message: " + message);
}
};
@Override
protected void onDestroy() {
// Unregister since the activity is about to be closed.
LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
super.onDestroy();
}
SenderActivity.java
第二个活动发送/广播通知。
@Override
public void onCreate(Bundle savedInstanceState) {
...
// Every time a button is clicked, we want to broadcast a notification.
findViewById(R.id.button_send).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
sendMessage();
}
});
}
// Send an Intent with an action named "custom-event-name". The Intent sent should
// be received by the ReceiverActivity.
private void sendMessage() {
Log.d("sender", "Broadcasting message");
Intent intent = new Intent("custom-event-name");
// You can also include some extra data.
intent.putExtra("message", "This is my message!");
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
LocalbroadcastManager包含在android3.0及以上，所以你有
为早期版本使用支持库v4。参见
李在这里 < / p > < / >
创建一个广播接收器:
private BroadcastReceiver onNotice= new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// intent can contain anydata
Log.d("sohail","onReceive called");
tv.setText("Broadcast received !");
}
};
Register your receiver in onResume of activity like:
protected void onResume() {
super.onResume();
IntentFilter iff= new IntentFilter(MyIntentService.ACTION);
LocalBroadcastManager.getInstance(this).registerReceiver(onNotice, iff);
}
//MyIntentService.ACTION is just a public static string defined in MyIntentService.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
lbm.registerReceiver(receiver, new IntentFilter("filter_string"));
}
public BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent != null) {
String str = intent.getStringExtra("key");
// get all your data from intent and do what you want
}
}
};
On Sending End:
Intent intent = new Intent("filter_string");
intent.putExtra("key", "My Data");
// put your all data using put extra
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
enter code here if (createSuccses){
val userDataChange=Intent(BRODCAST_USER_DATA_CHANGE)
LocalBroadcastManager.getInstance(this).sendBroadcast(
userDataChange
)
enableSpinner(false)
finish()
<receiver android:name=".YourBrodcastReceiverClass" android:exported="true">
<intent-filter>
<!-- The actions you wish to listen to, below is an example -->
<action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
public abstract Intent registerReceiver (BroadcastReceiver receiver,
IntentFilter filter);
public void onReceive(Context context, Intent intent) {
//Implement your logic here
}
