如何在iphone上触摸事件突出显示图像

Question

嗨朋友我创建了这种方法的图像选择它正常工作，但我面临着图像上的问题，当我触摸图像我不能看到图像点击或不是我想突出图像时我触摸它我怎么能做到这一点

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ 
    UITouch *touch = [[event allTouches] anyObject]; 
    CGPoint location= [touch locationInView:self.view]; 
    if(CGRectContainsPoint(firstImage.frame, location)) 
    { 
     // flag like 
     select=1;   
    } 
    else if(CGRectContainsPoint(secImage.frame, location)) 
    { 
     select=2;   
    } 
    [mComment resignFirstResponder]; 

} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { 

    UITouch *touch = [[event allTouches] anyObject]; 
    CGPoint location = [touch locationInView:self.view]; 

    if(CGRectContainsPoint(firstImage.frame, location)) { 
     if(select==1) { 

      var=1; 
     }} 
    else if(CGRectContainsPoint(secImage.frame, location)) { 

     if(select==2) { 
      vars=1; 
     }} 
    select=0; 
} 

Answer 1

你可以做一件事，当你触摸它时突出图像。当你触摸图像时，你应该改变触摸开始方法中所选图像的alpha，并在触摸结束方法中重置图像alpha。所以它看起来像按钮。

对于防爆。

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ 
    UITouch *touch = [[event allTouches] anyObject]; 
    CGPoint location= [touch locationInView:self.view]; 
    if(CGRectContainsPoint(firstImage.frame, location)) 
    { 
     // flag like 
     select=1;   
     firstImage.alpha = 0.5; 
    } 
    else if(CGRectContainsPoint(secImage.frame, location)) 
    { 
     select=2;   
     secImage.alpha = 0.5; 
    } 
    [mComment resignFirstResponder]; 

} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { 

    UITouch *touch = [[event allTouches] anyObject]; 
    CGPoint location = [touch locationInView:self.view]; 

    if(CGRectContainsPoint(firstImage.frame, location)) { 
     if(select==1) { 
      firstImage.alpha = 1.0; 
      var=1; 
     }} 
    else if(CGRectContainsPoint(secImage.frame, location)) { 

     if(select==2) { 
      secImage.alpha = 1.0; 
      vars=1; 
     }} 
    select=0; 
}