Question

我想发送服务电话以了解该引脚是否正确。我有4个文本字段。如果输入第4个文本字段，则服务调用必须自动进行。这意味着所有文本字段都应填写。如果用户更改1或2或3或4，则服务调用必须采用这种方式。我知道我们必须写入textField:shouldChangeCharactersInRange。但我不知道在哪里写。

请帮帮我。这是我的代码：

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    NSCharacterSet *acceptedInput = [NSCharacterSet characterSetWithCharactersInString:ACCEPTABLE_CHARECTERS];

    if (textField == self.textFied1&&([[string componentsSeparatedByCharactersInSet:acceptedInput] count] > 0))
    {
        int length = (int)[textField.text length];
        if (length==1)
        {
            [self.textField2 becomeFirstResponder];
            if(range.length == 0)
            {
                [self.textField2 becomeFirstResponder];
                return NO;
            }
            if([self.textFied1.text length]==1)
            {
                self.textFied1.text=@"";
                [self.textFied1 becomeFirstResponder];
                return NO;
            }

        }
        if (([[self.textField4 text] length] > 0)&& ([[self.textField2 text] length] > 0)&& ([[self.textField3 text] length] > 0)&& ([[self.textFied1 text] length] > 0)){
            [self connected1];//this step is not executing

        }
    }
    else if (textField == self.textField2&&([[string componentsSeparatedByCharactersInSet:acceptedInput] count] > 0))
    {
        int length = (int)[textField.text length];
        if (length==1)
        {
            if(range.length == 0)
            {
                [self.textField3 becomeFirstResponder];
                return NO;
            }

            if([self.textField2.text length]==1)
            {
                self.textField2.text=@"";
                [self.textFied1 becomeFirstResponder];
                return NO;
            }
        }
        if (([[self.textField4 text] length] > 0)&& ([[self.textFied1 text] length] > 0)&& ([[self.textField3 text] length] > 0)&&([[self.textField2 text] length] > 0)){

            [self connected1];//this step is not executing

        }

    }
    else if (textField == self.textField3&&([[string componentsSeparatedByCharactersInSet:acceptedInput] count] > 0))
    {
        int length = (int)[self.textField3.text length];
        if (length==1)
        {
            if(range.length == 0)
            {
                [self.textField4 becomeFirstResponder];
                return NO;
            }

            if([self.textField3.text length]==1)
            {
                self.textField3.text=@"";
                [self.textField2 becomeFirstResponder];
                return NO;
            }
        }
        if (([[self.textField4 text] length] > 0)&& ([[self.textField2 text] length] > 0)&& ([[self.textFied1 text] length] > 0)&& ([[self.textField3 text] length] > 0)){
            [self connected1];//this step is not executing
        }
    }
    else if (textField == self.textField4&&([[string componentsSeparatedByCharactersInSet:acceptedInput] count] > 0))
    {
        int length = (int)[textField.text length];
        if (length==1)

        {

            if(range.length == 0)
                return NO;

            if([self.textField4.text length]==1)
            {
                self.textField4.text=@"";
                [self.textField3 becomeFirstResponder];

                return NO;
            }

        }

        // here my service code
      if (([[self.textFied1 text] length] > 0)&& ([[self.textField2 text] length] > 0)&& ([[self.textField3 text] length] > 0)&&([[self.textField4 text] length] > 0))
        {
            [self connected1];//this step is not executing
        }
    }

    return YES;
}

Answer 1

这种情况正在发生，因为在NSString *content = [textField.text stringByAppendingString:string];中你无法直接获取字符串。

首先将用户的输入文本设为：

content

然后将所有条件与> webdriver-manager update --versions.chrome 2.24 > webdriver-manager start --versions.chrome 2.24匹配。

Reference

如何在iOS中填写文本字段后发送服务调用

1 个答案: