I have been trying to lock the device through program. But I can\'t find the solution still.
I want to lock android froyo2.2 through program. I have tried keyguardmanager and DeviceAdminManager.
My app is to remote lock the device. When message is received with some code words to lock then it locks the phone. I have found many Api_demo program as solution but I can\'t extract lock code alone from that and find solution.
The activity class should be inner class and the outter class should extend DeviceAdminReceiver
public class adminActivity extends DeviceAdminReceiver {
public static class Controller extends Activity {
DevicePolicyManager mDPM;
ComponentName mDeviceAdminSample;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
mDeviceAdminSample = new ComponentName(Controller.this,
adminActivity.class);
}
}
}
To lock the device write the code in the event where you use to lock
if (active) {
mDPM.lockNow();
}
If DeviceAdmin is enabled then the phone will be locked.
To enable the device admin, the DevicePolicyManager intent is called and it should be enabled by the user.
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, mDeviceAdminSample);
In order to solve this task you can take a look to NoKeyGuard source code and more precisely to a NoKeyGuard Service class and KeyguardLockWrapper class.
To unlock the device write the code in the event where you use to unlock:
Context context= getApplicationContext();
KeyguardManager _guard = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
KeyguardLock _keyguardLock = _guard.newKeyguardLock(\"KeyguardLockWrapper\");
//to disable
_keyguardLock.disableKeyguard();
//to enable
_keyguardLock.reenableKeyguard();
The activity class should be the inner class and the outer class should extend DeviceAdminReceiver
public class adminActivity extends DeviceAdminReceiver {
public static class Controller extends Activity {
DevicePolicyManager mDPM;
ComponentName mDeviceAdminSample;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
mDeviceAdminSample = new ComponentName(Controller.this,
adminActivity.class);
}
}
}
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness = 0;
getWindow().setAttributes(lp);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);