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) {
String action = intent.getAction();
Toast.makeText(context,
"动态:"
+action,
1000
).show();
}
};
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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"
;
@Override
protected
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));
}
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发送广播
class
ClickEvent
implements
OnClickListener {
@Override
public
void
onClick(View v) {
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);
}
}
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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>
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并且要实现一个类继承BroadcastReceiver
public
class
cls2
extends
BroadcastReceiver{
@Override
public
void
onReceive(Context context, Intent intent) {
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
