Delphi XE5 android 获取电池电量

uses 

  AndroidAPI.JNI.GraphicsContentViewText,
  AndroidAPI.JNI.JavaTypes,
  AndroidAPI.JNI.OS; 

function BatteryPercent(const aContext: JContext): Integer;
var
  filter: JIntentFilter;
  battery: JIntent;
  level, scale: Integer; 

begin 

  filter := TJIntentFilter.Create;
  filter.addAction(TJIntent.JavaClass.ACTION_BATTERY_CHANGED);
  battery := aContext.registerReceiver(NIL, filter);
  level := battery.getIntExtra(StringToJString('level'), -);
  scale := battery.getIntExtra(StringToJString('scale'), -);
  result := ( * level) div scale; 

end; 

获取电池电量代码