android TextInputLayout中的表单验证无法正常工作

Question

我正在尝试验证表单，我正在使用TextInputLayout错误来显示错误，当我单击空表单中的提交按钮时，错误仅显示在名称字段中，并且当我填写名称文本时错误未隐藏。其他字段也没有显示验证错误。

activity_form.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView android:layout_height="match_parent"
    android:layout_width="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android" >

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:orientation="vertical">

        <android.support.design.widget.TextInputLayout
            android:id="@+id/nameTextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/formNameEdit"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/form_hint_name"
                android:inputType="textPersonName"
                android:imeOptions="actionNext"
                android:maxLines="1" />
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/EmailTextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/formEmailEdit"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/form_hint_email"
                android:inputType="textEmailAddress"
                android:imeOptions="actionNext"
                android:maxLines="1" />

        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/PhoneTextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/form_hint_mobile_number"
                android:imeOptions="actionNext"
                android:id="@+id/formMobileEdit"
                android:inputType="number"
                android:maxLines="1" />

        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/AlternateTextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/form_hint_alternate_number"
                android:imeOptions="actionNext"
                android:id="@+id/formAlternateEdit"
                android:inputType="number"
                android:maxLines="1" />

        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/JEETextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:imeOptions="actionNext"
                android:id="@+id/formJeeEdit"
                android:hint="@string/form_hint_jee"
                android:inputType="number"
                android:minLines="1" />

        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/PercentageTextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/form_hint_percentage"
                android:imeOptions="actionNext"
                android:id="@+id/formPerEdit"
                android:inputType="numberDecimal"
                android:minLines="1" />
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/CityTextInputLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.design.widget.TextInputEditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:imeOptions="actionNext"
                android:hint="@string/form_hint_city"
                android:id="@+id/formCityEdit"
                android:inputType="text" />

        </android.support.design.widget.TextInputLayout>

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

            <Spinner
                android:id="@+id/deptSpinner"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                >

            </Spinner>

            <Spinner
                android:id="@+id/SourceSpinner"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content">
            </Spinner>


        </LinearLayout>

        <Button
            android:id="@+id/submit_btn"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/roundedbutton"
            android:text="@string/form_submit_btn" />
    </LinearLayout>

</ScrollView>

form activity.Java

mSubmitBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               Validation();
            }
        });

private void Validation(){
        boolean isValid = true;
        String dept = mDepartmentSpinner.getSelectedItem().toString();
        String source = mSourceSpinner.getSelectedItem().toString();

        String name = NameInputLayout.getEditText().getText().toString();

        if(NameInputLayout.getEditText().getText().toString().isEmpty()){
            NameInputLayout.setError("Enter Name");
            isValid = false;
        }else {
            NameInputLayout.setErrorEnabled(false);
            Log.d("form error", "Error removed");
        }
        String email = EmailInputLayout.getEditText().getText().toString();
        if(EmailInputLayout.getEditText().getText().toString().isEmpty()){
            NameInputLayout.setError("Enter Email");
            isValid = false;
        }else {
            NameInputLayout.setErrorEnabled(false);
        }

        String phone = PhoneInputLayout.getEditText().getText().toString().trim();
        if(phone.isEmpty()){
            NameInputLayout.setError("Enter Phone Number");
            isValid = false;
        }else {
            NameInputLayout.setErrorEnabled(false);
        }

        String alternate_num = AlternateInputLayout.getEditText().getText().toString();
        if(alternate_num.isEmpty()){
            NameInputLayout.setError("Enter Alternate Number");
            isValid = false;
        }else {
            NameInputLayout.setErrorEnabled(false);
        }

        String jee_marks = JeeInputLayout.getEditText().getText().toString();
        if(jee_marks.isEmpty()){
            NameInputLayout.setError("Enter Roll Number");
            isValid = false;
        }else {
            NameInputLayout.setErrorEnabled(false);
        }

        String percentage = PercentageInputLayout.getEditText().getText().toString();
        if(percentage.isEmpty()){
            NameInputLayout.setError("Enter Percentage");
            isValid = false;
        }else {
            NameInputLayout.setErrorEnabled(false);
        }

        String city = CityInputLayout.getEditText().getText().toString();
        if(city.isEmpty()){
            NameInputLayout.setError("Enter Name");
            isValid = false;
        }else {
            NameInputLayout.setErrorEnabled(false);
        }


        if(isValid){

            Boolean insert = dbHelper.insertForm(name,email,phone,alternate_num,jee_marks,percentage,city,dept,source);

            if(insert == true){

                Toast.makeText(getApplicationContext(),"Form Submitted",Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(FormActivity.this, MainActivity.class);
                startActivity(intent);

            }else {
                Toast.makeText(getApplicationContext(),"Error",Toast.LENGTH_SHORT).show();
            }

        }
}

Answer 1

这里是用于删除每个编辑文本和textinput布局需要调用的错误（edittext中的用户文本更改侦听器）的代码片段。

 public static void addTextChangedListener(EditText e, final TextInputLayout t) {
    e.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if (s.length() > 0) {
                if (!TextUtils.isEmpty(t.getError())) {
                    t.setError(null);
                    t.setErrorEnabled(false);
                }
            }
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });
}

第二件事是你在每个输入字段中验证电子邮件输入布局和设置错误到NameInputLayout。 - 复制粘贴，但聪明。

Answer 2

您似乎在使用与所有字段相同的textInputlayout（NameInputLayout）。因此，在输入名称后，执行else块时，errorEnabled将设置为false，从而导致未设置其他错误。

如果要删除其他情况下的错误，请执行以下操作： -

NameInputLayout.setError(null)

代替 ：-

NameInputLayout.setErrorEnabled(false);

否则，您必须将setErrorEnabled设置为true，再次使用它。