1

我正在尝试在新行中插入文本而不删除文本视图中的先前文本。我是 iOS 的新手，所以我很难解决这个问题。提前致谢

4

3 回答 3

1 
You can do it quite easily by using the following code :

NSString *oldText,*newText,*myString; 




- (IBAction)addNewItem:(id)sender {
[self updateTextField];

}

    - (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];

    return YES;
}



 -(void)updateTextField
{
    oldText=displayTextView.text;
    newText=entryTextField.text;
    myString = [newText stringByAppendingFormat:@"\n"];
    myString = [myString stringByAppendingString:oldText];
    displayTextView.text=myString;


}

在此处输入图像描述

于 2014-06-02T05:21:01.907 回答
0

尝试这个

当您在字符串中添加 \n 时，它将被转换为换行符

  aTextView.text = [NSString stringWithFormat:@"%@\n%@",aTextView.text,@"Second Line"];
于 2014-06-02T05:09:45.990 回答
0

textView.text = [(textView.text ?: @"") stringByAppendingString:(myText ?: @"")];

于 2014-06-02T05:14:30.507 回答