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我正在以編程方式實現Android 2.0中的屏幕鎖定,這裏是我的代碼。在Android 2.0中實現屏幕鎖定
this.deviceManager = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
deviceManager.lockNow();
但問題是我得到這個安全例外。
03-07 12:38:33.665: ERROR/AndroidRuntime(806): FATAL EXCEPTION: main
03-07 12:38:33.665: ERROR/AndroidRuntime(806): java.lang.SecurityException: No active admin owned by uid 10075 for policy #3
03-07 12:38:33.665: ERROR/AndroidRuntime(806): at android.os.Parcel.readException(Parcel.java:1247)
03-07 12:38:33.665: ERROR/AndroidRuntime(806): at android.os.Parcel.readException(Parcel.java:1235)
03-07 12:38:33.665: ERROR/AndroidRuntime(806): at android.app.admin.IDevicePolicyManager$Stub$Proxy.lockNow(IDevicePolicyManager.java:830)
03-07 12:38:33.665: ERROR/AndroidRuntime(806): at android.app.admin.DevicePolicyManager.lockNow(DevicePolicyManager.java:569)
03-07 12:38:33.665: ERROR/AndroidRuntime(806): at com.anquetMap.Main.onClick(Main.java:4
任何人都可以有任何想法是什麼問題? 任何幫助將是欣賞。
非常感謝。