如何在iphone上觸摸事件突出顯示圖像

Question

嗨朋友我創建了這種方法的圖像選擇它正常工作，但我面臨着圖像上的問題，當我觸摸圖像我不能看到圖像點擊或不是我想突出圖像時我觸摸它我怎麼能做到這一點

-(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，當你觸摸它時突出圖像。當你觸摸圖像時，你應該改變觸摸開始方法中所選圖像的alpha，並在觸摸結束方法中重置圖像alpha。所以它看起來像按鈕。

對於防爆。

-(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; 
}