FMX的 Android 平台下没有模态窗口的概念,具体原因俺就不清楚,也不多说。这里的模拟只是一种视觉效果上的模拟,并不是真正的模态窗口。先看一下效果:
点击 ShowDialog 按钮时,显示上显示了一个半透明的窗口,将背景覆盖了,然后设置了一些内容,请用户操作。
实际上要做的就是设置对话框窗口的几个属性:
Fill.Color :设置为 C8000000 ,我用的是黑色的半透明的效果
Fill.Kind :设置为 Solid,单色填充
Transparency :设置为 True,让背景透明
然后剩下的就是堆一堆控件,把对话框内容布局好就可以了。我上面的例子只是放了一个Panel,然后放了一个 Label 和两个 SpeedButton,在第一个窗体按钮的调用这个窗口Show出来就OK。
将代码简单的展示下:
Unit1.pas
Delphi/Pascal
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;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
uses Unit2;
{$R *.fmx}
{$R *.LgXhdpiPh.fmx ANDROID}
procedure TForm1.Button1Click(Sender: TObject);
begin
Form2.Show;//我就自己写了这一行
end;
end.
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unitUnit1;
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;
procedureButton1Click(Sender:TObject);
private
{Privatedeclarations}
public
{Publicdeclarations}
end;
var
Form1:TForm1;
implementation
usesUnit2;
{$R*.fmx}
{$R*.LgXhdpiPh.fmxANDROID}
procedureTForm1.Button1Click(Sender:TObject);
begin
Form2.Show;//我就自己写了这一行
end;
end.
Unit2.pas
Delphi/Pascal
unit Unit2;
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
TForm2 = class(TForm)
Panel1: TPanel;
Label1: TLabel;
SpeedButton1: TSpeedButton;
SpeedButton2: TSpeedButton;
procedure SpeedButton2Click(Sender: TObject);
procedure SpeedButton1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form2: TForm2;
implementation
{$R *.fmx}
procedure TForm2.SpeedButton1Click(Sender: TObject);
begin
Close;//我这里写了一行代码,关闭
end;
procedure TForm2.SpeedButton2Click(Sender: TObject);
begin
Application.Terminate;//我这里写了两行代码退出程序
Close;
end;
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unitUnit2;
interface
uses
System.SysUtils,System.Types,System.UITypes,System.Classes,System.Variants,
FMX.Types,FMX.Controls,FMX.Forms,FMX.Graphics,FMX.Dialogs,FMX.StdCtrls;
type
TForm2=class(TForm)
Panel1:TPanel;
Label1:TLabel;
SpeedButton1:TSpeedButton;
SpeedButton2:TSpeedButton;
procedureSpeedButton2Click(Sender:TObject);
procedureSpeedButton1Click(Sender:TObject);
private
{Privatedeclarations}
public
{Publicdeclarations}
end;
var
Form2:TForm2;
implementation
{$R*.fmx}
procedureTForm2.SpeedButton1Click(Sender:TObject);
begin
Close;//我这里写了一行代码,关闭
end;
procedureTForm2.SpeedButton2Click(Sender:TObject);
begin
Application.Terminate;//我这里写了两行代码退出程序
Close;
end;
完成整个效果,我写了四行代码,搞定。