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android程序监听home键与电源键

2014-03-20 10:12 267 查看 
01
private
final
BroadcastReceiver homePressReceiver =
new
BroadcastReceiver() {
02
final
String SYSTEM_DIALOG_REASON_KEY =
"reason"
;
03
final
String SYSTEM_DIALOG_REASON_HOME_KEY =
"homekey"
;
04
@Override
05
public
void
onReceive(Context context,Intent intent) {
06
String action = intent.getAction();
07
if
(action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
08
String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
09
if
(reason !=
null
&& reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {
10
//自己随意控制程序，关闭...
11
}
12
}
13
}
14
};
然后在onreate()方法中，注册

1
final
IntentFilter homeFilter =
new
IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
2
registerReceiver(homePressReceiver, homeFilter);
当然最后为了程序的严谨性也是为了防止出错，我们在onDestory()方法中，也要解除注册

1
if
(homePressReceiver !=
null
){
2
try
{
3
unregisterReceiver(homePressReceiver);
4
}
catch
(Exception e) {
5
Log.e(TAG,
"unregisterReceiver homePressReceiver failure :"
+e.getCause());
6
}
7
}
2，电源监听，先要有权限

1
<
uses-permission
android:name
=
"android.permission.WAKE_LOCK"
/>
然后监听两个action

01
Intent.ACTION_SCREEN_OFF
02
Intent.ACTION_SCREEN_ON
03
private
final
BroadcastReceiver mBatInfoReceiver =
new
BroadcastReceiver() {
04
@Override
05
public
void
onReceive(
final
Context context,
final
Intent intent) {
06
final
String action = intent.getAction();
07
if
(Intent.ACTION_SCREEN_OFF.equals(action)) {
08
//退出程序...
09
}
10
}
11
};
12
onCreate()方法中注册
13
IntentFilter filter =
new
IntentFilter(Intent.ACTION_SCREEN_OFF);
14
registerReceiver(mBatInfoReceiver, filter);
15
onDestory()方法中解除注册
16
if
(mBatInfoReceiver !=
null
){
17
try
{
18
unregisterReceiver(mBatInfoReceiver);
19
}
catch
(Exception e) {
20
Log.e(TAG,
"unregisterReceiver mBatInfoReceiver failure :"
+e.getCause());
21
}
22
}
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