Easy realization of Android screen lock function

The device super administrator needs to be introduced into the lock screen. It is described in detail in the administration of the Android development document. Android device management system features and controls access.

The main steps are as follows:

1. Create a broadcast receiver and implement deviceadminreceiver

2 register the broadcast in the list file (different from ordinary broadcast, it needs to follow the description format):

3 create an XML folder under res and create the corresponding XML file device_ admin_ sample. xml

4. String in the values file XML add

5 interface file:

6. Lock the screen, open the device administrator authority, and uninstall files

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.