用按钮删除字符

Question

我创建一个自定义退格按钮,但我的问题是我的后退按钮工作很好,以便从单词中间删除字符,但只删除1个字符后(删除字母),回到行尾它意味着不留在哪里光标是,这是我的代码:

        NSRange deleteRange = textPad.selectedRange;

        if (deleteRange.length >0)
        textPad.text = [textPad.text stringByReplacingCharactersInRange:deleteRange withString:@""];


        else

            if (deleteRange.location > 0)
            textPad.text =  [textPad.text  stringByReplacingCharactersInRange:NSMakeRange(deleteRange.location-1,1) 
 withString:@""];

Answer 1

我修复了它：只需添加以下代码：

deleteRange.location--;
deleteRange.length = 0;
textPad.selectedRange = deleteRange;