BroadCastReceiver的动态注册方式.txt
作者:互联网
步骤:
1、在MainAcvitity中新建一个内部类继承BroadCastReceiver
2、在MainAcvitity相关控件上添加发送广播的点击事件,在自定义内部类中接收广播
3.重写内部类的onStart和onStop方法,分别绑定动态加载的广播和解除广播
public class MainActivity extends AppCompatActivity {
private Button btn_sendDync;
private BroadCastDync bcd;//动态发送的广播类
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bcd = new BroadCastDync();//在onCreate中实例化内部类
btn_sendDync = (Button) findViewById(R.id.btn_sendDync);
//给相应控件添加点击事件
btn_sendDync.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent1 = new Intent("com.work.boradcast.BroadCastDync");
intent1.putExtra("dync", "动态广播已经发送");
sendBroadcast(intent1);
}
});
}
//自定义动态注册广播的内部类
class BroadCastDync extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String content = intent.getStringExtra("dync");
btn_sendDync.setText(content);
}
}
/**
* 重写动态发送广播的onStart和onStop方法,绑定过滤器和解除绑定
*/
@Override
protected void onStart() {
super.onStart();
IntentFilter filter = new IntentFilter();
filter.addAction("com.work.boradcast.BroadCastDync");
registerReceiver(bcd, filter);//绑定过滤器
}
@Override
protected void onStop() {
super.onStop();
unregisterReceiver(bcd);//解除动态广播的绑定
}
标签:btn,BroadCastReceiver,void,BroadCastDync,广播,注册,Override,txt,sendDync 来源: https://blog.51cto.com/u_15249199/2847164