Android实例-程序界面内截取屏幕(XE8+小米2)

结果：
1.只能截取程序界面内的图片。
2.图片有点不清楚，自己设置清楚度。
实例代码：
 1 unit Unit1;
 2 
 3 interface
 4 
 5 uses
 6   System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
 7   FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,
 8   FMX.Controls.Presentation, FMX.StdCtrls, FMX.Objects, FMX.Layouts;
 9 
10 type
11   TForm1 = class(TForm)
12     Label1: TLabel;
13     Button1: TButton;
14     Image1: TImage;
15     Layout1: TLayout;
16     procedure Button1Click(Sender: TObject);
17   private
18     { Private declarations }
19   public
20     { Public declarations }
21   end;
22 
23 var
24   Form1: TForm1;
25 
26 implementation
27 uses
28   FMX.Platform; //需要引入
29 {$R *.fmx}
30 {$R *.NmXhdpiPh.fmx ANDROID}
31 
32 function MakeScaleScreenshot(Sender: TControl): TBitmap;//截取屏幕函数
33 var
34   fScreenScale: Single;
35   function GetScreenScale: Single;
36   var
37   ScreenService: IFMXScreenService;
38   begin
39     Result := 1;
40     if TPlatformServices.Current.SupportsPlatformService(IFMXScreenService, IInterface(ScreenService)) then
41     begin
42       Result := ScreenService.GetScreenScale;
43     end;
44   end;
45 begin
46   fScreenScale := GetScreenScale;
47   Result := TBitmap.Create(Round(Sender.Width * fScreenScale), Round(Sender.Height * fScreenScale));
48   Result.Clear(0);
49   if Result.Canvas.BeginScene then
50   try
51     Sender.PaintTo(Result.Canvas, RectF(0, 0, Result.Width, Result.Height));
52   finally
53     Result.Canvas.EndScene;
54   end;
55 end;
56 
57 procedure TForm1.Button1Click(Sender: TObject);
58 var
59   oBitmap: TBitmap;
60 begin
61   oBitmap := MakeScaleScreenshot(Layout1);//此处Layout1为所有容器的容器
62   Image1.Bitmap.Assign(oBitmap);
63   oBitmap.DisposeOf;
64 end;
65 
66 end.