Insets就是css中的padding
我们给UITextField设置了leftView,目的是在文本输入框左侧显示一个图标。但是在ios7里,这个图标会紧紧地挨着TextField的左边框,很不美观,所以就希望设置一个Insets。但是直接设置ImageView的bounds不行,需要用下面这个方法:
@interface YLSTextField : UITextField -(id)initWithFrame:(CGRect)frame Icon:(UIImageView*)icon; @end
@implementation YLSTextField -(id)initWithFrame:(CGRect)frame Icon:(UIImageView*)icon { self = [super initWithFrame:frame]; if (self) { self.leftView = icon; self.leftViewMode = UITextFieldViewModeAlways; } return self; } -(CGRect) leftViewRectForBounds:(CGRect)bounds { CGRect iconRect = [super leftViewRectForBounds:bounds]; iconRect.origin.x += 10;// 右偏10 return iconRect; } @end
UIImage *usernameImage = [UIImage imageNamed:@"user"]; UIImageView *usernameIcon = [[UIImageView alloc] initWithImage:usernameImage]; usernameIcon.frame = CGRectMake(0, 0, 20, 20); self.username = [[YLSTextField alloc] initWithFrame:CGRectMake(0, 0, 240, 30) Icon:usernameIcon]; self.username.placeholder = @"用户名"; self.username.borderStyle = UITextBorderStyleRoundedRect; self.username.clearButtonMode = UITextFieldViewModeWhileEditing; [self.username setKeyboardType:UIKeyboardTypeNumberPad];
UITextField设置leftView的Insets,布布扣,bubuko.com
原文:http://blog.csdn.net/kyfxbl/article/details/26058921