IOS 开发UITextView回收或关闭键盘
iOS开发中,发现UITextView没有像UITextField中textFieldShouldReturn:这样的方法,那么要实现UITextView关闭键盘,就必须使用其他的方法,下面是可以使用的几种方法。
1.如果你程序是有导航条的,可以在导航条上面加多一个Done的按钮,用来退出键盘,当然要先实UITextViewDelegate。
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- ( void )textViewDidBeginEditing:(UITextView *)textView { UIBarButtonItem *done = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(leaveEditMode)] autorelease]; self.navigationItem.rightBarButtonItem = done; } - ( void )textViewDidEndEditing:(UITextView *)textView { self.navigationItem.rightBarButtonItem = nil; } - ( void )leaveEditMode { [self.textView resignFirstResponder]; } |
2.如果你的textview里不用回车键,可以把回车键当做退出键盘的响应键。
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-( BOOL )textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text { if ([text isEqualToString:@ "\n" ]) { [textView resignFirstResponder]; return NO; } return YES; } |
这样无论你是使用电脑键盘上的回车键还是使用弹出键盘里的return键都可以达到退出键盘的效果。
3.第三种方法感觉效果比上面两种都好,就是在弹出的键盘上面加一个view来放置退出键盘的Done按钮。
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UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)]; [topView setBarStyle:UIBarStyleBlack]; UIBarButtonItem * helloButton = [[UIBarButtonItem alloc]initWithTitle:@ "Hello" style:UIBarButtonItemStyleBordered target:self action:nil]; UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil]; UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@ "Done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)]; NSArray * buttonsArray = [NSArray arrayWithObjects:helloButton,btnSpace,doneButton,nil]; [doneButton release]; [btnSpace release]; [helloButton release]; [topView setItems:buttonsArray]; [tvTextView setInputAccessoryView:topView]; -(IBAction)dismissKeyBoard { [tvTextView resignFirstResponder]; } |
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原文链接:http://www.cnblogs.com/jingxin1992/p/6061856.html