76 Android BroadcastReceiver简单使用

activity_main.xml (布局文件中添加一个按钮)

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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