iOSUITextField首行缩进

我把四个textfield进行设置，把他们放在数组里面；

NSArray *array = @[self.telephoneNumber,self.codeNumber,self.password,self.ensurePassword];

    for (UITextField *textfield in array) {

        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 8, 8)];

        textfield.leftView = view;

        textfield.leftViewMode = UITextFieldViewModeAlways;

    }