Question

实际上我正在尝试在提交之前验证注册表单。因此，在单击提交按钮后，必须验证每个字段并根据验证结果如果未正确填充，由于SetError，将显示错误消息（）。但这里是问题，在填写正确的数据之后，带有消息的错误图标仍然存在。请帮助。

here is my code for the Signupform.xml file:-

    <ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/white"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="@string/Signup"
            android:textColor="#686868"
            android:textSize="25dp"
            android:textStyle="bold" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_marginTop="20dp"
            android:background="@mipmap/login_name_input"
            android:hint="Enter your name"
            android:maxLines="1"
            android:inputType="text"
            android:id="@+id/SignUp_name"
            android:singleLine="true"
            android:focusable="true"
            android:clickable="true"
            android:focusableInTouchMode="true"/>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_marginTop="20dp"
            android:background="@mipmap/login_name_input"
            android:hint="Enter your Email Address"
            android:inputType="textEmailAddress"
            android:maxLines="1"
            android:id="@+id/SignUp_email"
            android:singleLine="true"
            android:focusable="true"
            android:clickable="true"
            android:focusableInTouchMode="true"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:text="Select your Country"
            android:textColor="#676767" />

        <Spinner
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_marginTop="20dp"
            android:entries="@array/Country_name">

        </Spinner>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <EditText
                android:layout_width="0dp"
                android:layout_height="30dp"
                android:layout_marginTop="20dp"
                android:layout_weight="1"
                android:background="@mipmap/login_name_input" />

            <EditText
                android:layout_width="0dp"
                android:layout_height="30dp"
                android:layout_marginLeft="10dp"
                android:layout_marginTop="20dp"
                android:layout_weight="4"
                android:background="@mipmap/login_name_input"
                android:hint="Enter your Contact Number"
                android:inputType="numberDecimal"
                android:maxLines="1"
                android:id="@+id/SignUp_number"
                android:singleLine="true"
                android:focusable="true"
                android:clickable="true"
                android:focusableInTouchMode="true"/>
        </LinearLayout>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_marginTop="20dp"
            android:background="@mipmap/login_name_input"
            android:hint="Enter your password"
            android:inputType="textPassword"
            android:id="@+id/SignUp_password"
            android:maxLines="1"
            android:singleLine="true"
            android:focusable="true"
            android:clickable="true"
            android:focusableInTouchMode="true"/>

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="20dp"
            android:background="@mipmap/submit_btn"
            android:inputType="text"
            android:text="Sign Me Up"
            android:id="@+id/SignUp_button"
            android:textColor="@android:color/white"
            android:textStyle="bold" />


    </LinearLayout>
</ScrollView>


Here is my code for the SignupFragment.java:-


public class SignUpFragment extends Fragment implements View.OnClickListener {
    EditText Signup_name,Signup_email,Signup_password,Signup_contact;
    ImageView Signup_button;
    Validation validation;



    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view=inflater.inflate(R.layout.fragment_sign_up, container, false);
        Signup_name=(EditText)view.findViewById(R.id.SignUp_name);
        Signup_email=(EditText)view.findViewById(R.id.SignUp_email);
        Signup_password=(EditText)view.findViewById(R.id.SignUp_password);
        Signup_contact=(EditText)view.findViewById(R.id.SignUp_number);
        Signup_button=(ImageView)view.findViewById(R.id.SignUp_button);
        Signup_button.setOnClickListener(this);
        validation=new Validation();
        return  view;
    }


    @Override
    public void onClick(View v)
    {
        if(!validation.isValidName(Signup_name.toString()))
        {

            Signup_name.setError("please enter a name");
        }
        if(!validation.isValidEmail(Signup_email.toString()))
        {

            Signup_email.setError("please enter a Valid Email Address");
        }
        if(!validation.isValidEmail(Signup_password.toString()))
        {
            Signup_password.setError("min password length has to be 6");
        }
        if(!validation.isValidNumber(Signup_contact.toString()))
        {

            Signup_contact.setError("please enter a Valid Contact number");
        }
    }
}


Here is my Validation.java code:-

    ublic class Validation
{
    boolean isValidEmail(String email) {
        String EMAIL_PATTERN = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
                + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

        Pattern pattern = Pattern.compile(EMAIL_PATTERN);
        Matcher matcher = pattern.matcher(email);
        return matcher.matches();
    }
    boolean isValidPassword(String pass) {
        if (!pass.isEmpty() && pass.length() >= 6) {
            return true;
        }
        return false;
    }
    boolean isValidNumber(String num)
    {
        if (!num.isEmpty() && num.length()==10) {
            return true;
        }
        return false;
    }
    boolean isValidName(String name)
    {
        if (!name.isEmpty() && name.length()<30) {
            return true;
        }
        return false;
    }

}

Answer 1

您必须添加else段以删除setError，例如setError(null)

public class SignUpFragment extends Fragment implements View.OnClickListener {
    EditText Signup_name,Signup_email,Signup_password,Signup_contact;
    ImageView Signup_button;
    Validation validation;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view=inflater.inflate(R.layout.fragment_sign_up, container, false);
        Signup_name=(EditText)view.findViewById(R.id.SignUp_name);
        Signup_email=(EditText)view.findViewById(R.id.SignUp_email);
        Signup_password=(EditText)view.findViewById(R.id.SignUp_password);
        Signup_contact=(EditText)view.findViewById(R.id.SignUp_number);
        Signup_button=(ImageView)view.findViewById(R.id.SignUp_button);
        Signup_button.setOnClickListener(this);
        validation=new Validation();
        return  view;
    }


    @Override
    public void onClick(View v)
    {
        if(!validation.isValidName(Signup_name.getText().toString()))
        {
            Signup_name.setError("please enter a name");
        } else {
            Signup_name.setError(null);
        }

        if(!validation.isValidEmail(Signup_email.getText().toString()))
        {
            Signup_email.setError("please enter a Valid Email Address");
        } else {
            Signup_email.setError(null);
        }

        if(!validation.isValidEmail(Signup_password.getText().toString()))
        {
            Signup_password.setError("min password length has to be 6");
        } else {
            Signup_password.setError(null);
        }

        if(!validation.isValidNumber(Signup_contact.getText().toString()))
        {
            Signup_contact.setError("please enter a Valid Contact number");
        } else {
            Signup_contact.setError(null);
        }
    }
}


Here is my Validation.java code:-

    ublic class Validation
{
    boolean isValidEmail(String email) {
        String EMAIL_PATTERN = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
                + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

        Pattern pattern = Pattern.compile(EMAIL_PATTERN);
        Matcher matcher = pattern.matcher(email);
        return matcher.matches();
    }
    boolean isValidPassword(String pass) {
        if (!pass.isEmpty() && pass.length() >= 6) {
            return true;
        }
        return false;
    }
    boolean isValidNumber(String num)
    {
        if (!num.isEmpty() && num.length()==10) {
            return true;
        }
        return false;
    }
    boolean isValidName(String name)
    {
        if (!name.isEmpty() && name.length()<30) {
            return true;
        }
        return false;
    }

}

Answer 2

    private EditText edt_firstName,edt_email;
     private String firstName,email;

    edt_firstName = findViewById(R.id.edt_firstName);
    edt_email = findViewById(R.id.edt_email);

     private void validateData(){
     firstName = edt_firstName.getText().toString().trim();
     email = edt_email.getText().toString().trim();
    if (!firstName.isEmpty() && !email.isEmpty() && isValidEmail(email) {
    //here api call of the register user.
    }else{
    if (firstName.isEmpty()) {
                    edt_firstName.setError("Please Enter First Name");
                    edt_firstName.requestFocus();
                }
     else if (email.isEmpty()) {
                    edt_email.setError("Please Valid Email Id");
                    edt_email.requestFocus();
                } else if (!isValidEmail(email)) {
                    edt_email.setError("Please Enter Valid Email");
                    edt_email.requestFocus();
                }
    }
    }

private static boolean isValidEmail(String email) {
        return !TextUtils.isEmpty(email) && Patterns.EMAIL_ADDRESS.matcher(email).matches();
    }

注册表单中的错误使用Android

2 个答案: