XE6 安卓电量检测

unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs, FMX.StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}


uses

  AndroidAPI.JNI.GraphicsContentViewText,
  AndroidAPI.JNI.JavaTypes,
  AndroidAPI.Helpers,
  FMX.Helpers.Android;




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'), -1);
  scale := battery.getIntExtra(StringToJString('scale'), -1);
  result := (100 * level) div scale;



end;



procedure TForm1.Button1Click(Sender: TObject);

begin
  showmessage(inttostr(BatteryPercent(SharedActivityContext)));

end;

end.