uibutton

UIButton共有三种属性 1.contentEdgeInsets 2.titleEdgeInsets 3.imageEdgeInsets UIEdgeInsets 先来看看内部代码是怎样写的 typedef struct __attribute__ ( ( objc_boxable ) ) UIEdgeInsets { CGFloat top , left , bottom , right ; } UIEdgeInsets ; 原来是结构体，它的四个参数：top, left, bottom, right, 分别表示距离上边界，左边界，下边界，右边界的位移，默认值均为0。 contentEdgeInsets 我们都知道，UIButton按钮可以只设置一个UILabel或者一个UIImageView，还可以同时具有UILabel和UIImageView；如果给按钮设置contentEdgeInsets属性，就是按钮的内容整体（包含UILabel和UIImageView）进行偏移 按钮内容整体向右下分别移动10像素： button . contentEdgeInsets = UIEdgeInsetsMake ( 10 , 10 , - 10 , - 10 ) ; titleEdgeInsets & imageEdgeInsets 这两个属性的效果是相辅相成的

表视图的列表按钮 SecondLevelViewControlle r.h－－－查看前边例子 接口实现： #import <Foundation/Foundation.h> #import "SecondLevelViewControlle r.h" @interface RowControlsController : SecondLevelViewControlle r { NSArray *list; } @property (nonatomic, retain) NSArray *list; - (IBAction)buttonTapped:(id)sender; @end 实现： #import "RowControlsController.h" @implementation RowControlsController @synthesize list; //表视图按钮的点击事件 - (IBAction)buttonTapped:(id)sender { UIButton *senderButton = (UIButton *)sender; UITableViewCell *buttonCell = (UITableViewCell *)[senderButton superview]; //获取表视图的一行id NSUInteger buttonRow = [

@property (nonatomic,strong) UIButton *but; @property (nonatomic,strong) UIButton *but1; @property (strong, nonatomic) UIView *subView; //客服QQ -(void)qqAction { self.but = [UIButton buttonWithType:UIButtonTypeCustom]; self.but.frame = self.view.bounds; self.but.backgroundColor = [UIColor colorWithWhite:0.019 alpha:0.400]; [self.but addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:self.but]; self.but1 = [UIButton buttonWithType:UIButtonTypeCustom]; self.but1.frame = self.view.bounds; self.but1.backgroundColor = [UIColor

uicollectionview下单独使用uibutton然后setimage或者直接使用uiimageview然后一定角度旋转后发现size会变动 解决方案：添加uibutton到uicollectionvview然后添加uiimageview到uibutton上而后旋转没有问题 但是点击时候即便设置的uiimageview的相关可点击属性依然无法实现button的点击，解决途径：tapgesture判断 代码如下： self.subThemeGobackBtn = [UIButton buttonWithType:UIButtonTypeCustom]; self.subThemeGobackBtn.frame = CGRectMake(self.collectionView.bounds.size.width / 2 + 60.0f, positionY, 0.0f, 0.0f); [self.subThemeGobackBtn setBackgroundColor:[UIColor clearColor]]; // [self.subThemeGobackBtn addTarget:self action:@selector(gobackToPerviousScreen:) forControlEvents:UIControlEventTouchUpInside];