iOS开发中,经常要用到输入框,可默认情况下,输入框出来之后,除非点击键盘上面的“Done”或“Next”按钮才能将其隐藏。站在用户体验的角度上看,这种情况很不友好,尤其是不能突显苹果操作的便捷性。
总结出了两种方法:
第一种,是最常见的,就是给最外层的view添加一个手势响应UITapGestureRecognizer,代码如下:
- (void)viewDidLoad{ [super viewDidLoad]; UITapGestureRecognizer *tapGr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(viewTapped:)]; tapGr.cancelsTouchesInView = NO; [self.view addGestureRecognizer:tapGr];}-(void)viewTapped:(UITapGestureRecognizer*)tapGr{ [activitySearchBar resignFirstResponder];} |
第二种,稍微复杂些,不过思路也差不多,就是将最外层的view作为一个UIScrollView,点击即可将当前的焦点交给UIScrollView,代码如下:
#import <UIKit/UIKit.h>#import "BaseData.h"@interface BaseTextFieldView : UIScrollView { id target; int ypos,y;}-(void)setTarget:(id)d;@end |
#import "BaseTextFieldView.h"@implementation BaseTextFieldView- (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { // Initialization code. } return self;}- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event{ [target performSelector:@selector(endEdit)]; return YES;}-(void)setTarget:(id)d{ ypos = 0; target = d;}-(BOOL)touchesShouldBegin:(NSSet *)touches withEvent:(UIEvent *)event inContentView:(UIView *)view{ return YES;}- (void)dealloc { [super dealloc];} |
在需要调用的Controller的.h文件添加对UITextFieldDelegate的引用,代码如下:
#import "BaseTextFieldView.h" |
@interface DemoController : UIViewController <UITextFieldDelegate>{ } |
将xib文件的view,改成对BaseTextFieldView的引用,如图:

在Controller的.m文件中,添加代码:
[(BaseTextFieldView *)self.view setTarget:self]; |
以上两种方法经测试均可实现。
原文:http://www.cnblogs.com/congzhong/p/4361238.html