【移动应用开发技术】iOS中runtime forwardInvocation的示例分析

【移动应用开发技术】iOS中runtimeforwardInvocation的示例分析

iOSruntimeforwardInvocation详解TestModel-

(NSMethodSignature

*)methodSignatureForSelector:(SEL)aSelector

{

if(aSelector

==

@selector(testMethod))

{

return

[NSMethodSignature

signatureWithObjCTypes:"v@:"];

}

return

nil;

}

-(void)forwardInvocation:(NSInvocation

*)anInvocation

{

if

(anInvocation.selector

==

@selector(testMethod))

{

TestModelHelper1

*h2

=

[[TestModelHelper1

alloc]

init];

TestModelHelper2

*h3

=

[[TestModelHelper2

alloc]

init];

[anInvocation

invokeWithTarget:h2];

[anInvocation

invokeWithTarget:h3];

}

}TestModelHelper1-(void)testMethod

{

NSLog(@"i

am

TestModelHelper1");

}

TestModelHelper2

[objc]

view

plain

copy

-(void)testMethod

{

NSLog(@"i

am

TestModelHelper2");

}TestModel

*model

=

[[TestModel

alloc]

init];

[model

testMethod];/upload/information/20200623/126/122397.png-(void)testMethod;-(NSString

*)testMethod2:(NSString

*)str;-(void)testMethod

{

NSLog(@"i

am

TestModelHelper1");

Method

method

=

class_getInstanceMethod(self.class,

@selector(testMethod));

const

char

*des

=

method_getTypeEncoding(method);

NSString

*desStr

=

[NSString

stringWithCString:des

encoding:NSUTF8StringEncoding];

NSLog(@"%@",desStr);

}/upload/information/20200623/126/122398.png-(NSString

*)testMethod2:(NSString

*)str

{

Method

method

=

class_getInstanceMethod(self.class,

@selector(testMethod2:));

const

charchar

*des

=

method_getTypeEncoding(method);

NSString

*desStr

=

[NSString

stringWithCString:des

encoding:NSUTF8StringEncoding];