本文介绍了XE4(Firemonkey + iOS静态库),Pascal从Objective C类转换?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何转换? (Objective C Class - > Delphi XE4)
如何在Delphi XE的静态库中使用Objective-C类?
以下是我的第一次试验。
$ b p>
// objective C:test.h ---------------------------------- ------
@interface objc_test:NSObject {
BOOL busy;
}
- (int)test:(int)value;
@end
// objective C:test.m ---------------------------- ------------
@implementation objc_test
- (int)test:(int)value {
busy = true;
return(value + 1);
}
@end
我的转换程式码有误。
如何解决这个问题?
Delphi Source
// Delphi XE4 / iOS ------------------------------------- ------
{$ L test.a} // ObjC静态库
类型
objc_test = interface(NSObject)
function test(value: integer):integer; cdecl;
end;
Tobjc_test = class(TOCLocal)
Public
function GetObjectiveCClass:PTypeInfo;覆盖;
function test(value:integer):integer; cdecl;
end;
implmentation
函数Tobjc_test.GetObjectiveCClass:PTypeInfo;
begin
结果:= TypeInfo(objc_test);
end;
函数Tobjc_test.test(value:integer):integer;
begin
//
//
end;
感谢
Simon,Choi
type
//这里你定义类的非静态方法
objc_test = interface(NSObject)
[InterfaceGUID]
function test(value:integer):integer; cdecl;
end;
type
//这里你定义静态类方法
objc_testClass = interface(NSObjectClass)
[InterfaceGUID]
end;
type
//当您调用Create of TObjc_TestClass
TObjc_TestClass = class(TOCGenericImport< objc_testClass,objc_Test>)end时,TOCGenericImport将objC类映射到Delphi接口;另外,你需要一个 dlopen('test.a',RTLD_LAZY) / code>(dlopen在Posix.Dlfcn中定义)
然后你可以使用下面的代码:
程序测试;
var
testClass:objc_test;
begin
testClass:= TObjc_TestClass.Create;
testClass.test(3);
end;
How to Conversion ? (Objective C Class -> Delphi XE4 )
and How to use Objective-C Class in static Library from Delphi XE ?
Following is the my first trial.But It makes error.
Objective C Source
// objective C : test.h ----------------------------------------
@interface objc_test : NSObject {
BOOL busy;
}
- (int) test :(int) value;
@end
// objective C : test.m ----------------------------------------
@implementation objc_test
- (int) test :(int) value {
busy = true;
return( value + 1);
}
@end
Here is wrong my conversion code.How to fix that ?
Delphi Source
// Delphi XE4 / iOS -------------------------------------------
{$L test.a} // ObjC Static Library
type
objc_test = interface (NSObject)
function test(value : integer) : integer; cdecl;
end;
Tobjc_test = class(TOCLocal)
Public
function GetObjectiveCClass : PTypeInfo; override;
function test(value : integer): integer; cdecl;
end;
implmentation
function Tobjc_test.GetObjectiveCClass : PTypeInfo;
begin
Result := TypeInfo(objc_test);
end;
function Tobjc_test.test(value : integer): integer;
begin
// ????????
//
end;
Thanks
Simon,Choi
解决方案 When you want to import a Objective C class you have to do the following:
type
//here you define the class with it's non static Methods
objc_test = interface (NSObject)
[InterfaceGUID]
function test(value : integer) : integer; cdecl;
end;
type
//here you define static class Methods
objc_testClass = interface(NSObjectClass)
[InterfaceGUID]
end;
type
//the TOCGenericImport maps objC Classes to Delphi Interfaces when you call Create of TObjc_TestClass
TObjc_TestClass = class(TOCGenericImport<objc_testClass, objc_Test>) end;
Also you need a dlopen('test.a', RTLD_LAZY)
(dlopen is defined in Posix.Dlfcn)
Then you can use the code as following:
procedure Test;
var
testClass: objc_test;
begin
testClass := TObjc_TestClass.Create;
testClass.test(3);
end;
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