底部导航视图

时间:2020-05-31 16:13:58

标签: java xml android-studio navigationbar

当我将带有属性的XML放入设计部分时,我不知道它是否正在发生,因为它实例化了所需的所有依赖项。

<com.google.android.material.bottomnavigation.BottomNavigationView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:menu="@menu/nav_menu">  </com.google.android.material.bottomnavigation.BottomNavigationView>

和依赖项:

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.google.firebase:firebase-analytics:17.2.2'
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.firebase:firebase-auth:19.3.0'
implementation 'com.google.firebase:firebase-auth:19.1.0'
implementation 'com.google.android.gms:play-services-auth:18.0.0'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'com.google.android.material:material:1.2.0-beta01'
implementation 'com.google.android.material:material:1.2.0-beta01'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'com.facebook.android:facebook-android-sdk:[4,5)'
implementation 'com.google.firebase:firebase-auth:19.1.0'
implementation 'com.google.firebase:firebase-core:17.0.0'
}

它们都是我使用的依赖项,向我展示设计的图像是这样的: enter image description here

我看不到任何导航栏或任何错误,我不知道该怎么办,请帮助。

1 个答案:

答案 0 :(得分:0)

删除这2个依赖项

implementation 'com.google.android.material:material:1.2.0-beta01'
implementation 'com.google.android.material:material:1.2.0-beta01'

并将其替换为此

implementation 'com.android.support:design:26.1.0'

尝试也使用此代码

布局资源文件:

 <com.google.android.material.bottomnavigation.BottomNavigationView
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schema.android.com/apk/res/res-auto"
     android:id="@+id/navigation"
     android:layout_width="match_parent"
     android:layout_height="56dp"
     android:layout_gravity="start"
     app:menu="@menu/my_navigation_items" />

res / menu / my_navigation_items.xml:

 <menu xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:id="@+id/action_search"
          android:title="@string/menu_search"
          android:icon="@drawable/ic_search" />
     <item android:id="@+id/action_settings"
          android:title="@string/menu_settings"
          android:icon="@drawable/ic_add" />
     <item android:id="@+id/action_navigation"
          android:title="@string/menu_navigation"
          android:icon="@drawable/ic_action_navigation_menu" />
 </menu>