textView取消键盘 



1、通过在textView中键盘上方添加一个toolBar来实现取消键盘的功能，可以添加其他功能：




1 UIToolbar * topView = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 30)];  
2     [topView setBarStyle:UIBarStyleBlackTranslucent];
3     
4     UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
5     UIBarButtonItem * doneButton = [[UIBarButtonItem alloc] initWithTitle:@"完成" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)];    
6     NSArray * buttonsArray = @[btnSpace, doneButton];    
7     
8     [topView setItems:buttonsArray];
9     [_textView setInputAccessoryView:topView];




2、如果上方有一个navigationBar，则可以在bar上添加一个DONE按钮来取消键盘，如果bar上已经有其他功能按键，则可以弹出键盘前保存当前barButtonItem，然后在弹出键盘（利用shouldBeginEditing委托来触发）后用取消键盘按钮来替换：




1 - (BOOL)textViewShouldBeginEditing:(UITextView *)textView
2 {
3     self.rightButton = self.navigationItem.rightBarButtonItem;
4     UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:@"完成" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)]; 
5     self.navigationItem.rightBarButtonItem = doneButton;
6     return YES;
7 }






键盘消失后再赋回原来的按钮：




- (void)dismissKeyBoard
{
    [_textView resignFirstResponder];
    self.navigationItem.rightBarButtonItem = self.rightButton;
}




 





 


 






		

		
posted @ 
2012-12-23 22:28 
Story Of My Life 
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