uitextfield

@IBOutlet weak var resultProcessed: UITextField! var str:String = "Mike is here" resultProcessed = str gives error: Cannot assign a value of type 'String' to a value of type 'UITestField!' resultProcessed.text = str You need to assign it to the text property. 来源： https://stackoverflow.com/questions/30093423/swift-how-to-assign-a-string-to-a-uitextfield

I have a text field that is always of the format "XX0000000XX", X being a letter, 0 being a number. I switch keyboards as the user is typing depending on whether they need to enter a number or letter. This works fine, until the user positions the cursor in the middle of the text field to make an edit. How do I determine the cursor position within a UITextField? I know a UITextView has a selectedRange that can be used, but I've read that you can't force a UITextView to be single line entry? i.e. Disable multiple lines of text. Clever bit with the keyboards. My immediate thought is that perhaps

判断全汉字（这个问题苦恼了我很久，现在很方便，几行代码就搞定）： if ([ self deptNameInputShouldChinese ]) { [ DemonAlertHelper showToastWithMessage : @" 只能是中文 " ]; return ; } 调用这个方法就可 #pragma mark-- #pragma mark 输入中文 - ( BOOL ) deptNameInputShouldChinese { NSString *regex = @"[\u4e00-\u9fa5]+" ; NSPredicate *pred = [ NSPredicate predicateWithFormat : @"SELF MATCHES %@" ,regex]; if (![pred evaluateWithObject : inputTextField . text ]) { return YES ; } return NO ; } 判断全数字： - ( BOOL ) deptNumInputShouldNumber { NSString *regex = @"[0-9]*" ; NSPredicate *pred = [ NSPredicate predicateWithFormat : @"SELF MATCHES %@" ,regex]; if (