Question

I launch the set password activity by using the intent DevicePolicyManager.ACTION_SET_NEW_PASSWORD. When the user sets a password I want to be notified (basically then my app knows that the master passcode is set for the device). However, in my onActivityResult function I get a RESULT_CANCELLED action when the user tries to set a new PIN or alphanumeric password. I have only observed this with Android version 4.0.4. Does anyone know how I can find if the user has set a PIN or a alphanumeric password on ICS?

Answer 1

After some research I found this solution. Make a class to extend the android.app.admin.DeviceAdminReceiver to listen for any change associated with the device master password. Override the public void onPasswordChanged(Context context, Intent intent) method to receive a call back when there is a change in the passcode. The following code for onPasswordChanged worked for me.

public class MyDeviceAdminReceiver extends android.app.admin.DeviceAdminReceiver {


@Override
public void onPasswordChanged(Context context, Intent intent) {
    super.onPasswordChanged(context, intent);

    Log.d(TAG, "onPasswordChanged:");
    boolean masterPasswordEnabled = false;
    ComponentName component = new ComponentName(context, MyDeviceAdminReceiver.class);
    DevicePolicyManager devPolicyMan = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);

    // Update configuration based on actual password state on the device
    if (devPolicyMan.isAdminActive(component)) {
          Log.d("master_password_debug", "admin is active");
          devPolicyMan.setPasswordMinimumLength(component, 1);
          masterPasswordEnabled = devPolicyMan.isActivePasswordSufficient();
        }

}

}

Use masterPasswordEnabled even if the resultCode is RESULT_CANCELLED.