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UITextView退出键盘的几种方式

2014-03-04 17:12 337 查看

（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，当然要先实现UITextViewDelegate。

- (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。

#pragma mark - UITextView Delegate Methods

-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{

if ([text isEqualToString:@"\n"]) {

[textView resignFirstResponder];

return NO;

}

return YES;

}

（3）还有你也可以自定义其他视图控件加载到键盘上用来退出，比如在弹出的键盘上面加一个view来放置退出键盘的Done按钮。

1 UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)];
2
3     [topView setBarStyle:UIBarStyleBlack];
4
5     UIBarButtonItem * helloButton = [[UIBarButtonItem alloc]initWithTitle:@"Hello" style:UIBarButtonItemStyleBordered target:self action:nil];
6
7     UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
8
9
10
11     UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)];
12
13     NSArray * buttonsArray = [NSArray arrayWithObjects:helloButton,btnSpace,doneButton,nil];
14
15     [doneButton release];
16
17     [btnSpace release];
18
19     [helloButton release];
20
21     [topView setItems:buttonsArray];
22
23     [tvTextView setInputAccessoryView:topView];
24
25 -(IBAction)dismissKeyBoard
26
27 {
28
29     [tvTextView resignFirstResponder];
30
31 }

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