iOS - UIModalPresentationFormSheet模式下resignFirstResponder无法隐藏键盘

iOS 弹出UIModalPresentationFormSheet模式
 

    UIViewController*fbsheet = [[FeedbackSheet alloc] initWithNibName:@"FeedbackSheet"bundle:nil];  

    fbsheet.modalPresentationStyle = UIModalPresentationFormSheet; 

    [self presentModalViewController:fbsheet animated:YES]; 

     

但是当在UItextview软盘弹出之后，点击其他区域使用下面代码软盘无法隐藏
方法一:

重写disablesAutomaticKeyboardDismissal即可，该api在iOS (4.3 andlater)

-(BOOL)disablesAutomaticKeyboardDismissal 

{  

    return NO; 

}  

方法二:

  - (void)viewDidLoad 

{  

    [super viewDidLoad]; 

     

    UIToolbar * topView =[[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)]; 

    [topViewsetBarStyle:UIBarStyleBlack];  

  

    UIBarButtonItem *btnSpace = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpacetarget:self action:nil];  

    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:@"收起键盘"style:UIBarButtonItemStyleDone target:selfaction:@selector(dismissKeyBoard)];  

    [doneButtonsetWidth:80];  

     

    NSArray * buttonsArray =[NSArray arrayWithObjects:btnSpace,doneButton,nil]; 

    [doneButton release]; 

    [btnSpace release]; 

     

    [topViewsetItems:buttonsArray];  

    [feedbackContentsetInputAccessoryView:topView];  

}  

  

-(IBAction)dismissKeyBoard  

{  

    [feedbackContentresignFirstResponder];  

}

方法三:

 UINavigationController *nv =[[UINavigationController alloc]initWithRootViewController:searchVC];

   nv.modalPresentationStyle = UIModalPresentationFormSheet;

    [selfpresentModalViewController:nv animated:YES];

UINavigationController必须用Category的方法实现如下方法，才可以让键盘消失

@interface UINavigationController (DismissKeyboard)

- (BOOL)disablesAutomaticKeyboardDismissal;

@end

@implementation UINavigationController (DismissKeyboard)

- (BOOL)disablesAutomaticKeyboardDismissal

{

    return NO;

}

方法四:此方法是能解决关闭键盘,可是苹果审核会拒绝使用该api

[textF resignFirstResponder];//没起到键盘收起的效果

    @try {

       Class UIKeyboardImpl =NSClassFromString(@"UIKeyboardImpl");

       id activeInstance = [UIKeyboardImplperformSelector:@selector(activeInstance)];

       [activeInstanceperformSelector:@selector(dismissKeyboard)];

    }

    @catch (NSException*exception) {

       NSLog(@"%@", exception);

    }

方法五:

    //关闭键盘

    [[[UIApplication sharedApplication] keyWindow] endEditing:YES];

 

  如果一个view上好多输入框，为了关闭弹出的软键盘要遍历然后调用resignFirstResponder的吧？发现一个关键这个view上可能    打开的键盘很简单:[self.view endEditing:YES];

   直接ok了。

方法六:

   //关闭键盘

    [[self findFirstResponderBeneathView:self] resignFirstResponder];

 

[[self findFirstResponderBeneathView:self] becomeFirstResponder];//打开键盘

-(UIView*)findFirstResponderBeneathView:(UIView*)view 

{

    // Search recursivelyfor first responder

    for ( UIView *childViewin view.subviews ) {

       if ( [childViewrespondsToSelector:@selector(isFirstResponder)]&& [childView isFirstResponder]) 

           returnchildView;

       UIView *result = [selffindFirstResponderBeneathView:childView];

       if ( result ) 

           returnresult;

    }

    return nil;

}