android广播的使用

原文链接：/article/4894450.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);
}
}