iphone - 如何检查组件是 UIView 还是 UIImageView

Question

嗨，在我的应用程序中，我有一个数组。因为我有许多 UIView 和 UIImageView 组件，我想从该数组中获取每个组件，并且必须知道是 imageview 还是 view，如果那是 imageview，我必须更改该 imageview 的图像。但我没有知道如何知道组件是图像视图还是视图。如果有人知道，请告诉我识别组件类型的方法。请在这个问题上帮助我。

for (int i=0; i<[array count]; i++){
   // here i have to know wether the component is imageview or view and based on that i have to do below operations 
   UIView *view1=[array objectAtIndex:i];
   NSLog(@"%@",[array objectAtIndex:i]);
   if (130==view1.tag){
       view1.backgroundColor=[UIColor redColor];
    }
    UIImageView *image1=[array objectAtIndex:i];
    if (132==image1.tag){
       image1.image=[UIImage imageNamed:@"Approve2.png"];
    }
}

Answer 1

利用isKindOfClass

例子：

if ( [originalValue isKindOfClass:[UIImageView class]] ){

   UIImageView *myImageView = (UIImageView *)originalValue;

}

Answer 2

您可以通过类内省检查

尝试这个

if( [obj1 class] == [obj2 class] ){

   //same class
}

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Class Introspection
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·  Find the class of an Objective-C object
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·  Verify 2 Objective-C objects are of the same class
        [obj1 class] == [obj2 class]