android自定义"图片+文字"控件四种实现方法,UIButton图片文字位置的四种情况

我们在做项目的过程中经常会遇到各定制UIButton

1.左边图片,右边文字

2.左边文字,右边图片

3.上边图片,下边文字

4.上边文字,下边图片

针对这四种情况

使用UIButton的category实现

.h文件实现内容

#import

typedef NS_ENUM(NSInteger,SDButtonStyle) {

SDButtonStyleNormal = 0,

SDButtonStyleTitleLeft,

SDButtonStyleTitleUp,

SDButtonStyleTitleDown

};

@interface UIButton (ButtonStyle)

@property (nonatomic, assign) CGRect imageRect;

@property (nonatomic, assign) CGRect titleRect;

@property (nonatomic, assign) SDButtonStyle buttonStyle;

@property (nonatomic, assign) CGFloat verSpace;

@end

.m文件实现内容

#import "UIButton+ButtonStyle.h"

#import

@implementation UIButton (ButtonStyle)

+ (void)load {

Method imageOriginalMethod = class_getInstanceMethod([self class], @selector(imageRectForContentRect:));

Method imageSwizzledMethod = class_getInstanceMethod([self class], @selector(sd_imageRectForContentRect:));

method_exchangeImplementations(imageOriginalMethod, imageSwizzledMethod);

Method titleOriginalMethod = class_getInstanceMethod([self class], @selector(titleRectForContentRect:));

Method titleSwizzledMethod = class_getInstanceMethod([self class], @selector(sd_titleRectForContentRect:));

method_exchangeImplementations(titleOriginalMethod, titleSwizzledMethod);

}

- (CGRect)sd_imageRectForContentRect:(CGRect)contentRect {

if (!CGRectIsEmpty(self.imageRect) && !CGRectEqualToRect(self.imageRect, CGRectZero)) {

return self.imageRect;

}