ios - 尝试移动我的自定义UITextField清除按钮，但无法调整大小或正确移动

Question

因此，我为通用UITextField有一个自定义的clearButton。我正在尝试将clearButton移至uitextfield的背景，右侧具有一些设计内容。我需要将清除按钮推到约150像素以上。

我尝试了所有这些组合，但是最终将clearbutton推离屏幕，或者使clear按钮真正变宽，因此uitextfield中的文本停止变短。

第一次尝试

UIButton *clearBtn = [UIButton buttonWithType:UIButtonTypeCustom];

CGRect rect;
UIEdgeInsets contentInsets;
CGRect result;
[clearBtn setImage:[UIImage imageNamed:@"design.png"] forState:UIControlStateNormal];
rect = CGRectMake(0, 0, 45, 45);
contentInsets = UIEdgeInsetsMake(0, 50, 0, 0);
result = UIEdgeInsetsInsetRect(rect, contentInsets);
[clearBtn setFrame:result];

第二次尝试

UIButton *clearBtn = [UIButton buttonWithType:UIButtonTypeCustom];

CGRect rect;
UIEdgeInsets contentInsets;
CGRect result;
[clearBtn setImage:[UIImage imageNamed:@"design.png"] forState:UIControlStateNormal];
rect = CGRectMake(0, 0, 45, 45);
contentInsets = UIEdgeInsetsMake(0, 250, 0, 150);
result = UIEdgeInsetsInsetRect(rect, contentInsets);
[clearBtn setFrame:result];

Answer 1

一个更好的选择是子类UITextField并重写clearButtonRectForBounds:方法。

- (CGRect)clearButtonRectForBounds:(CGRect)bounds {
    CGRect rect = [super clearButtonRectForBounds:bounds];
    rect.origin.x -= 150;

    return rect;
}

这会将清除按钮从其正常位置向左移动150点。