Android中BroadcastReceiver使用分为动态注册BroastcastReceiver ，静态注册BroastcastReceiver
1、动态注册BroastcastReceiver。
定义BroadcastReceiver：
private BroadcastReceiver bcr1 = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
Toast.makeText(context, "动态:"+action, 1000).show();
}
}; |
注册registerReceiver(bcr1, new IntentFilter(ACTION_1));代码如下。关键代码是注册代码registerReceiver(bcr1, new IntentFilter(ACTION_1))，其他是一些简单的按钮， 及绑定的Click事件。
Button btn1,btn2,btn3; static final String ACTION_1 = "com.example.broadcastreceiverdemo.ACTION_1";
static final String ACTION_2 = "com.example.broadcastreceiverdemo.ACTION_2";
static final String ACTION_3 = "com.example.broadcastreceiverdemo.ACTION_3";
@Overrideprotected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button)this.findViewById(R.id.button1);
btn1.setOnClickListener(new ClickEvent());
btn2 = (Button)this.findViewById(R.id.button2);
btn2.setOnClickListener(new ClickEvent());
btn3 = (Button)this.findViewById(R.id.button3);
btn3.setOnClickListener(new ClickEvent());
registerReceiver(bcr1, new IntentFilter(ACTION_1));
} |
发送广播
class ClickEvent implements OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v == btn1)
{
Intent intent = new Intent(ACTION_1);
sendBroadcast(intent);
}
if(v == btn2)
{
Intent intent = new Intent(ACTION_2);
sendBroadcast(intent);
}
if(v == btn3)
{
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_BATTERY_LOW);
filter.addAction(ACTION_3);
registerReceiver(bcr2, new IntentFilter(ACTION_3));
Intent intent = new Intent(ACTION_3);
intent.putExtra("Conuntry", "China");
intent.putExtra("City", "ShangHai");
sendBroadcast(intent);
}
}
|
其中 v == btn1为发送至内部动态注册的BroadcastReceiver;
v == btn2为发送至内部静态注册的BroadcastReceiver;
v == btn3为发送至系统级内部动态注册BroadcastReceiver(bt1和bt3基本一样，只是稍微加了addAction以及Intent的putExtra);
2 静态注册BroastcastReceiver。静态注册更要烦些，要在Androidmanifest.xml中注册。
<application android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<receiver android:name="cls2">
<intent-filter>
<action android:name="com.example.broadcastreceiverdemo.ACTION_2"></action>
</intent-filter>
</receiver>
<activity
android:name="com.example.broadcastreceiverdemo.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application> |
并且要实现一个类继承BroadcastReceiver
public class cls2 extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
Toast.makeText(context, "静态:"+action, 1000).show();
}
} |
本文转自Work Hard Work Smart博客园博客，原文链接：http://www.cnblogs.com/linlf03/archive/2013/03/14/2959367.html，如需转载请自行联系原作者