DHSeparateTextField
An easy way to use a separate textfield
DHSepatateTextField *textField = [DHSepatateTextField textFieldWithSquareAmount:5];
textField.frame = CGRectMake(0, 200, [UIScreen mainScreen].bounds.size.width, 200);
textField.squareAmount = 5;
[textField setFinishEdit:^(NSString *str) {
NSLog(@"完成后的Str - %@", str);
}];