【发布时间】:2015-07-31 00:08:15
【问题描述】:
我的文本字段输入有问题。在“CommentviewController”中,我有一个可滚动的表格视图来显示以前的 cmets,底部是一个 UItextField,供用户输入评论并发布。问题是:当我尝试在文本字段中键入并切换键盘时,文本会在我键入时上下跳跃。例如,我输入的第一个字符在键盘上方,第二个在键盘下方和后方。有人知道原因吗?测试设备是64GB的itouch5,代码是用Objective C写的,我用的是Xcode 6.3.2。
<i>`- (void)keyboardWasShown:(NSNotification*)aNotification {
NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
theKBSize = kbSize;
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height - 10, 0.0);
self.tvComment.contentInset = contentInsets; self.tvComment.scrollIndicatorInsets = contentInsets;
CGRect uvFrame = _uvComment.frame;
uvFrame.origin.y = self.view.frame.size.height - kbSize.height - _uvComment.frame.size.height; _uvComment.frame = uvFrame; } `</i>
<i> `- (void)keyboardWillBeHidden:(NSNotification*)aNotification {
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
_tvComment.contentInset = contentInsets;
_tvComment.scrollIndicatorInsets = contentInsets;
}`</i>
<i>`- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
if(string==nil || [string length]<1) {
[self.btnSend setEnabled: NO];
}else {
[self.btnSend setEnabled: YES];
}
return YES;
}`</i>
【问题讨论】:
-
请分享您的 CommentviewController 的代码
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没有代码很难给出解决方案。另请注意,问题应该易于理解以便快速回答。
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- (void)keyboardWasShown:(NSNotification*)aNotification { NSDictionary* info = [aNotification userInfo]; CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size; theKBSize = kbSize; UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height - 10, 0.0); self.tvComment.contentInset = contentInsets; self.tvComment.scrollIndicatorInsets = contentInsets; CGRect uvFrame = _uvComment.frame; uvFrame.origin.y = self.view.frame.size.height - kbSize.height - _uvComment.frame.size.height; _uvComment.frame = uvFrame; }
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// UIKeyboardWillHideNotification 发送时调用 - (void)keyboardWillBeHidden:(NSNotification*)aNotification { UIEdgeInsets contentInsets = UIEdgeInsetsZero; _tvComment.contentInset = contentInsets; _tvComment.scrollIndicatorInsets = contentInsets; } - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { if(string==nil || [string length]
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这里是相关的代码
标签: ios objective-c xcode uitextfield