Local broadcast information can only be passed inside the application, and the broadcast receiver can only receive broadcast messages inside the application.
MainActivity Code
package ;
import ;
import ;
import ;
import ;
import .;
import .;
import ;
import ;
import ;
import ;
public class MainActivity extends AppCompatActivity implements {
private Button button;
private IntentFilter intentFilter;
private LocalBroadcastManager localBroadcastManager ;
private LocalReceiver localReciiver;
@Override
protected void onCreate(Bundle savedInstanceState) {
(savedInstanceState);
setContentView(.activity_main);
button = (Button)findViewById(.send_button);
(this);
localBroadcastManager = (this);//use intentFilter = new IntentFilter();
(".LOCAL_BROADCAST");
localReciiver = new LocalReceiver();
(localReciiver,intentFilter);
}
@Override
protected void onDestroy() {
();
(localReciiver);
}
@Override
public void onClick(View view) {
Intent intent = new Intent(".LOCAL_BROADCAST");
(intent);
}
class LocalReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
(context,"received local broadcast",Toast.LENGTH_SHORT).show();
}
}
}
First, the instance is obtained through the getInstance(this) method of LocalBroadcastManager (local broadcast management class). When registering a broadcast message, registerReceiver (parameter 1, parameter 2) method of localBroadcastManager instance is registered (parameter 1 is the local broadcast recipient, parameter 2 is that the filter only selects to receive specific broadcast messages), and the broadcast message is called the sendBroadcast (Initent initent) method of localBroadcastManager instance is sent.
MyRecevity
package ;
import ;
import ;
import ;
import ;
public class MyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
(context,"Received in MyBroadCastReceiver",Toast.LENGTH_SHORT).show();
abortBroadcast();
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
< xmlns:andro
xmlns:app="/apk/res-auto"
xmlns:tools="/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="">
<Button
android:
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Send a broadcast"/>
</>
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:andro
package="">
<application
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="" />
<category android:name="" />
</intent-filter>
</activity>
<receiver
android:name=".MyReceiver"
android:enabled="true"
android:exported="true">
<intent-filter
android:priority="100">
<action android:name=".LOCAL_BROADCAST"/>
</intent-filter>
</receiver>
</application>
</manifest>
The above is all the content of this article. I hope it will be helpful to everyone's study and I hope everyone will support me more.