Android中如何使用本地广播

这篇文章主要介绍了Android中如何使用本地广播的相关知识，内容详细易懂，操作简单快捷，具有一定借鉴价值，相信大家阅读完这篇Android中如何使用本地广播文章都会有所收获，下面我们一起来看看吧。

MainActivity代码

package com.example.luobo.mybroadcastreceiver;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.support.v4.content.LocalBroadcastManager;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends AppCompatActivity implements View.OnClickListener{  private Button button;  private IntentFilter intentFilter;  private LocalBroadcastManager localBroadcastManager ;  private LocalReceiver localReciiver;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    button = (Button)findViewById(R.id.send_button);    button.setOnClickListener(this);    localBroadcastManager = LocalBroadcastManager.getInstance(this);//使用    intentFilter = new IntentFilter();    intentFilter.addAction("com.example.luobo.mybroadcastreceiver.LOCAL_BROADCAST");    localReciiver = new LocalReceiver();    localBroadcastManager.registerReceiver(localReciiver,intentFilter);  }  @Override  protected void onDestroy() {    super.onDestroy();    localBroadcastManager.unregisterReceiver(localReciiver);  }  @Override  public void onClick(View view) {    Intent intent = new Intent("com.example.luobo.mybroadcastreceiver.LOCAL_BROADCAST");    localBroadcastManager.sendBroadcast(intent);  }  class LocalReceiver extends BroadcastReceiver{    @Override    public void onReceive(Context context, Intent intent) {      Toast.makeText(context,"received local broadcast",Toast.LENGTH_SHORT).show();    }  }}

首先通过LocalBroadcastManager（本地广播管理类）的getInstance(this)方法获取实例，注册广播消息时是调用localBroadcastManager实例的registerReceiver(参数1,参数2)方法注册（参数1是本地广播接受者，参数2是过滤器只选择接收特定的广播消息），调用localBroadcastManager实例的sendBroadcast（Initent initent）方法发送广播消息。

MyRecevity

package com.example.luobo.mybroadcastreceiver;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.widget.Toast;public class MyReceiver extends BroadcastReceiver {  @Override  public void onReceive(Context context, Intent intent) {    Toast.makeText(context,"Received in MyBroadCastReceiver",Toast.LENGTH_SHORT).show();    abortBroadcast();  }}

activity_main.xml

AndroidMainfest.aml

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