android广播的使用

原文链接：http://www.cnblogs.com/zyw-205520/archive/2013/01/25/2876882.html

在Activity中，注册广播的一个Demo。

总共分3步

第一步：定义一个BroadcastReceiver广播接收类：

view plain
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver(){ 
        @Override 
        public void onReceive(Context context, Intent intent) { 
            String action = intent.getAction(); 
            if(action.equals(ACTION_NAME)){ 
                Toast.makeText(Test.this, "处理action名字相对应的广播", 200); 
            } 
        } 
         
    };

第二步：注册该广播：

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public void registerBoradcastReceiver(){ 
        IntentFilter myIntentFilter = new IntentFilter(); 
        myIntentFilter.addAction(ACTION_NAME); 
        //注册广播       
        registerReceiver(mBroadcastReceiver, myIntentFilter); 
    }

第三步：触发响应

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mBtnMsgEvent = new Button(this); 
        mBtnMsgEvent.setText("发送广播"); 
        mBtnMsgEvent.setOnClickListener(new OnClickListener() { 
            @Override 
            public void onClick(View v) { 
                Intent mIntent = new Intent(ACTION_NAME); 
                mIntent.putExtra("yaner", "发送广播，相当于在这里传送数据"); 
                 
                //发送广播 
                sendBroadcast(mIntent); 
            } 
        });

package com.zyw.Broadcast; 

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast; 

public class Test extends Activity{
    private final String ACTION_NAME = "发送广播";
    private Button mBtnMsgEvent = null; 

    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState); 

        //注册广播
        registerBoradcastReceiver(); 

        LinearLayout mLinearLayout = new LinearLayout(this);
        mBtnMsgEvent = new Button(this);
        mBtnMsgEvent.setText("发送广播");
        mLinearLayout.addView(mBtnMsgEvent);
        setContentView(mLinearLayout); 

        mBtnMsgEvent.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent mIntent = new Intent(ACTION_NAME);
                mIntent.putExtra("yaner", "发送广播，相当于在这里传送数据"); 

                //发送广播
                sendBroadcast(mIntent);
            }
        });
    } 

    private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver(){
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if(action.equals(ACTION_NAME)){
                Toast.makeText(Test.this, "处理action名字相对应的广播", 200);
            }
        } 

    }; 

    public void registerBoradcastReceiver(){
        IntentFilter myIntentFilter = new IntentFilter();
        myIntentFilter.addAction(ACTION_NAME);
        //注册广播
        registerReceiver(mBroadcastReceiver, myIntentFilter);
    }
}