UITextView 取消键盘方法

首先UITextView 要实现delegate UITextViewDelegate

 

然后在.m文件里实现该协议：

 

- (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];
}