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。