属性fab附加未找到

Question

使用材质组件时无法运行project。

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'android.arch.lifecycle:extensions:1.1.1'

    implementation 'com.facebook.fresco:fresco:1.11.0'
    implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.+'
    implementation  'com.fxn769:pix:1.2.5'




    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:cardview-v7:28.0.0'
    implementation 'com.android.support:recyclerview-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:support-v4:28.0.0'

}

错误日志：

Android资源链接输出失败：D:\Android Projects\Ghar3\app\src\main\res\layout\main\u layout。xml:23:错误：未找到fabAttached属性（又名com.reseaction.ghar:fabAttached）。错误：链接文件资源失败。

命令：C:\Users\Abdul Qadir。gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows。jar\93d85fd8448aa5b91b30eb47e2faac6a\aapt2-3.2.1-4818971-windows\aapt2。exe链接-I\D:\sdk\Android\sdk\platforms\Android-28\Android。jar \--manifest\D:\Android Projects\Ghar3\app\build\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest。xml \-o\D:\Android Projects\Ghar3\app\build\mediates\processed\u res\debug\processDebugResources\out\resources debug。ap \-R\@D:\Android Project\Ghar3\app\build\intermediates\incremental\processDebugResources\resources调试资源列表。美联社。txt \--自动添加覆盖\--java\D:\Android Projects\Ghar3\app\build\generated\not_namespaced\u r_class\u sources\debug\processDebugResources\r \--custom package\com。娱乐ghar \-0\apk \--输出文本符号\D:\Android Projects\Ghar3\app\build\intermediates\symbols\debug\R.txt \--无版本向量守护程序：AAPT2 AAPT2-3.2.1-4818971-windows守护程序#0

Answer 1

该属性似乎已在androidx中删除。要附加操作栏，只需将属性app:layout_锚添加到您的晶圆厂。

<com.google.android.material.floatingactionbutton.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="16dp"
        app:fabSize="normal"
        android:src="@drawable/ic_add_white_24dp"
        app:layout_anchor="@id/bottom_app_bar"/>