76 Android BroadcastReceiver简单使用

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activity_main.xml (布局文件中添加一个按钮)

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_marginBottom="78dp"        android:text="发送广播" /></RelativeLayout>

MyBroadcastReceiver extends BroadcastReceiver

MyBroadcastReceiver.java

package com.example.android_broadcast;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.widget.Toast;public class MyBroadcastReceiver  extends BroadcastReceiver {public MyBroadcastReceiver() {// TODO Auto-generated constructor stub}@Overridepublic void onReceive(Context arg0, Intent arg1) {// TODO Auto-generated method stubString name=arg1.getStringExtra("name");Toast.makeText(arg0, "Hello World----"+name, 1).show();}}

MainActivity.java

package com.example.android_broadcast;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;import android.view.View;import android.widget.Button;public class MainActivity extends Activity {private Button button;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);button=(Button)findViewById(R.id.button1);button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent intent=new Intent(MainActivity.this, MyBroadcastReceiver.class);intent.putExtra("name", "Tom");sendBroadcast(intent);}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

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