Question

我的Android应用出现问题。到目前为止，这是我的第一个登录和注册页面。电子邮件，密码和确认密码的字段未显示。该错误表明缺少两个类，但我在布局文件夹activity_login.xml

中定义了它们

找不到以下课程：

-android.support.design.widget.TextInputEditText（修复构建路径，编辑XML，创建类） -android.support.design.widget.TextInputLayout（修复构建路径，编辑XML，创建类）

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/nestedScrollView"
        android:background="@color/colorPrimaryDark"
        android:padding='20dp'
        tools:context="activities.LoginActivity">

        <android.support.v7.widget.LinearLayoutCompat
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <android.support.v7.widget.AppCompatImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="40dp"
                android:src="@drawable/logo" />

            <android.support.design.widget.TextInputLayout
                android:id="@+id/textInputLayoutName"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="40dp">

                <android.support.design.widget.TextInputEditText
                    android:id="@=id/textInputEditTextName"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/hint_name"
                    android:textColorHint="@color/colorText"
                    android:inputType="text"
                    android:maxLines="1"
                    android:textColor="@color/colorText"/>
            </android.support.design.widget.TextInputLayout>

            <android.support.design.widget.TextInputLayout
                android:id="@+id/textInputLayoutEmail"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="20dp">

                <android.support.design.widget.TextInputEditText
                    android:id="@=id/textInputEditTextEmail"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/hint_email"
                    android:textColorHint="@color/colorText"
                    android:inputType="text"
                    android:maxLines="1"
                    android:textColor="@color/colorText"/>
            </android.support.design.widget.TextInputLayout>

            <android.support.design.widget.TextInputLayout
                android:id="@+id/textInputLayoutPassword"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="20dp">

                <android.support.design.widget.TextInputEditText
                    android:id="@=id/textInputEditTextPassword"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/hint_password"
                    android:textColorHint="@color/colorText"
                    android:inputType="textPassword"
                    android:maxLines="1"
                    android:textColor="@color/colorText"/>
            </android.support.design.widget.TextInputLayout>

            <android.support.design.widget.TextInputLayout
                android:id="@+id/textInputConfirmPassword"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="20dp">

                <android.support.design.widget.TextInputEditText
                    android:id="@=id/textInputEditConfirmPassword"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/confirm_password"
                    android:textColorHint="@color/colorText"
                    android:inputType="textPassword"
                    android:maxLines="1"
                    android:textColor="@color/colorText"/>
            </android.support.design.widget.TextInputLayout>

            <android.support.v7.widget.AppCompatButton
                android:id="@+id/appCompatButtonRegister"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="40dp"
                android:textColor="@color/colorText"
                android:background="@color/colorTextHint"
                android:text="@string/text_register"/>

            <android.support.v7.widget.AppCompatTextView
                android:id="@+id/appCompatTextViewLoginLink"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="30dp"
                android:gravity="center"
                android:text="@string/text_member"
                android:textSize="16sp"
                android:textColor="@color/colorText" />






        </android.support.v7.widget.LinearLayoutCompat>

    </android.support.v4.widget.NestedScrollView>

错误日志pt2

error log

Answer 1

我认为您没有实现以下Gradle。请在您的Gradle文件中检查这些Gradle，并记住SDK的版本应该相同。

implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'

Android Studio布局文件夹.xml文件中缺少类

1 个答案: