无法在当前主题中找到“?attr/textAppearanceCaption”

Question

这是我的简单 xml 文件

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical"
tools:context=".MainActivity">
<FrameLayout
    android:id="@+id/main_screen"
    android:layout_width="match_parent"
    android:layout_height="593dp"
    android:background="@color/CadetBlue"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0">
</FrameLayout>
<android.support.design.widget.BottomNavigationView
    android:id="@+id/bottom_menu"
    style="@style/Widget.MaterialComponents.BottomNavigationView.Colored"
    android:layout_width="match_parent"
    android:layout_height="67dp"
    android:layout_alignParentBottom="true"
    android:baselineAligned="false"
    app:itemBackground="@color/colorPrimary1"
    app:itemIconTint="@drawable/item_selector"
    app:itemTextColor="@drawable/item_selector"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/main_screen"
    app:menu="@menu/nav_items" />

我的 build.gradle 文件是

    //noinspection GradleCompatible
   apply plugin: 'com.android.application'

   android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.smile_sifat.donatethefloody"
        minSdkVersion 26
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner 
       "android.support.test.runner.AndroidJUnitRunner"
       }
       buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 
     'proguard-rules.pro'
        }
    }
  }

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.android.support:cardview-v7:28.0.0'
implementation 'com.google.firebase:firebase-core:16.0.4'
implementation 'com.google.firebase:firebase-auth:16.0.5'
implementation 'com.google.firebase:firebase-messaging:17.3.4'
implementation 'com.google.firebase:firebase-database:16.0.4'
implementation 'com.google.firebase:firebase-storage:16.0.4'
implementation 'com.google.firebase:firebase-firestore:17.1.2'
implementation 'com.android.support:recyclerview-v7:28.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso- 
core:3.0.2'
}

 apply plugin: 'com.google.gms.google-services'

Answer 1

每当您使用任何样式时，您都需要为其MaterialComponents添加/定义属性。android:textApperance

添加android:textApperance与您的BottomNavigationView样式相关的属性以使其正常工作。