在位置Objective-C处插入字符串

Question

I'm making an app the has 'hotkeys' in it and when you tap the hotkey it should insert a character at the location you are typing at. I'm using a UITextView with editing on.

What I want do do is insert the text right after the blue cursor.
Is this possible?

Answer 1

你想使用insertText:方法UITextView ，这是在其实施的声明UIKeyInput （这是一个超级协议协议UITextInput ，这UITextView 。器具）

Answer 2

You can get the location of the cursor by using

int position = txtView.selectedRange.location;

Then you will need to get the string from the text view and insert your own string

NSMutableString *str = [txtView.text mutableCopy];
[str insertString:@"YourString" atIndex:position];
txtView.text = str;

This may scroll the text view and lose your current cursor, if you dont want to lose it, you will need to subclass UITextView and do some work inside the drawRect