我正在开发一个适用于Android 4.0+的锁屏应用。我使用了一个服务来注册一个监听器以便在屏幕关闭时启动一个活动。但整个过程不够快，监听器有轻微延迟，而真正的问题在于活动的启动需要3-4秒钟。
我已经看到了类似的应用程序，比如: https://github.com/Pi-Developers/Pi-Locker。 在这种情况下，一切都运行得很完美，但我无法弄清楚我做错了什么。 清单
我已经看到了类似的应用程序，比如: https://github.com/Pi-Developers/Pi-Locker。 在这种情况下，一切都运行得很完美，但我无法弄清楚我做错了什么。 清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="xxxxx" >
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen" >
<activity
android:name=".MainActivity"
android:screenOrientation="portrait"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".LockScreenActivity"
android:screenOrientation="portrait"
android:label="@string/app_name"
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
android:excludeFromRecents="true"
android:windowSoftInputMode="stateAlwaysHidden" >
<intent-filter>
<category android:name="android.intent.category.HOME" />
</intent-filter> >
</activity>
<receiver
android:name=".LockBoot"
android:enabled="true" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<receiver
android:name=".LockReceiver"
android:enabled="true" >
</receiver>
<service
android:name=".LockerService"
android:icon="@drawable/ic_launcher"
android:process=":background" >
</service>
</application>
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
</manifest>
主活动
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent i = new Intent(MainActivity.this, LockerService.class);
startService(i);
setContentView(R.layout.activity_main);
}
}
锁定服务
public class LockerService extends Service {
static SharedPreferences spf;
static Context c;
int mActive;
String on;
LockReceiver mReceiver = new LockReceiver();
@Override
public IBinder onBind(Intent arg0) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
/**
*
* mStaus is Variable of int we need to find status of locker to make it
* enable or disable
*
**/
@Override
public void onCreate() {
mActive = 1; //todo
if (mActive == 0) {
stopSelf();
return;
}
if (mActive == 1) {
try {
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
intentFilter.setPriority(9999);
registerReceiver(mReceiver, intentFilter);
} catch (Exception e) {
unregisterReceiver(mReceiver);
}
} else {
try {
unregisterReceiver(mReceiver);
} catch(Exception e){
e.printStackTrace();
}
}
}
@Override
public void onDestroy() {
super.onDestroy();
/**
*
* make sure service still running
*
*/
startService(new Intent(LockerService.this , LockerService.class));
}
}
锁屏接收器
public class LockReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
TelephonyManager ts = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
int callState = ts.getCallState();
if (callState == TelephonyManager.CALL_STATE_IDLE) {
context.startActivity(new Intent(context, LockScreenActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
}
}
}
LockScreenActivity是一个空的活动，带有简单的布局。目前还没有任何操作。
有什么想法吗？