support lower android version,better for different screen size.
The application has access to the following:
Allows the application to set the system wallpaper.
mount and unmount filesystems
Allows the application to mount and unmount filesystems for removable storage.
full Internet access
Allows an application to create network sockets.
view network state
Allows an application to view the state of all networks.
view Wi-Fi state
Allows an application to view the information about the state of Wi-Fi.
coarse (network-based) location
Access coarse location sources such as the cellular network database to determine an approximate phone location, where available. Malicious applications can use this to determine approximately where you are.
fine (GPS) location
Access fine location sources such as the Global Positioning System on the phone, where available. Malicious applications can use this to determine where you are, and may consume additional battery power.