Android Studio：膨胀类 android.support.design.widget.FloatingActionButton 时出错

Question

今天我尝试初始化“ChatSDK”并遇到了一些问题。现在，如果我想启动我的应用程序，它一直在崩溃。我发现了这个问题：

E/androidRuntime: FATAL EXEPTION: main   Process: com.inspredunity.gm.germanminelife, PID: 2605
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.inspredunity.gm.germanminelife/com.inspredunity.gm.germanminelife.MainActivity}: android.view.InflateException: Binary XML file line #20: Binary XML file line #20: Error inflating class android.support.design.widget.FloatingActionButton
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6669)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
 Caused by: android.view.InflateException: Binary XML file line #20: Binary XML file line #20: Error inflating class android.support.design.widget.FloatingActionButton
 Caused by: android.view.InflateException: Binary XML file line #20: Error inflating class android.support.design.widget.FloatingActionButton

E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.design.widget.FloatingActionButton" on path: DexPathList[[zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/base.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_dependencies_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_resources_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_0_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_1_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_2_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_3_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_4_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_5_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_6_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_7_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_8_apk.apk", zip file "/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/base.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_dependencies_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_resources_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_0_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_1_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_2_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_3_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_4_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_5_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_6_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_7_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_8_apk.apk!/lib/x86, /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_slice_9_apk.apk!/lib/x86, /system/lib]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at android.view.LayoutInflater.createView(LayoutInflater.java:606)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
    at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
    at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
    at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
E/AndroidRuntime:     at com.inspredunity.gm.germanminelife.MainActivity.onCreate(MainActivity.java:37)
    at android.app.Activity.performCreate(Activity.java:7136)
    at android.app.Activity.performCreate(Activity.java:7127)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6669)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
    Suppressed: java.io.IOException: No original dex files found for dex location /data/app/com.inspredunity.gm.germanminelife-EdgnsjPOMDBCjzzyKZd6KA==/split_lib_resources_apk.apk
    at dalvik.system.DexFile.openDexFileNative(Native Method)
    at dalvik.system.DexFile.openDexFile(DexFile.java:354)
    at dalvik.system.DexFile.<init>(DexFile.java:101)
    at dalvik.system.DexFile.<init>(DexFile.java:75)
    at dalvik.system.DexPathList.loadDexFile(DexPathList.java:394)
    at dalvik.system.DexPathList.makeDexElements(DexPathList.java:354)
    at dalvik.system.DexPathList.<init>(DexPathList.java:164)
    at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:74)
    at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:65)
    at dalvik.system.PathClassLoader.<init>(PathClassLoader.java:64)
 at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:73)
    at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:88)
    at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:74)
    at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:40)
    at android.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:727)
    at android.app.LoadedApk.getClassLoader(LoadedApk.java:810)
    at android.app.LoadedApk.getResources(LoadedApk.java:1032)
    at android.app.ContextImpl.createAppContext(ContextImpl.java:2345)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5749)
    at android.app.ActivityThread.access$1100(ActivityThread.java:199)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1650)

这是我的 Gradle 依赖项：

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.firebase:firebase-messaging:17.3.4'
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'
implementation 'com.google.firebase:firebase-core:16.0.6'
implementation 'com.google.firebase:firebase-messaging:17.3.4'
implementation 'com.google.firebase:firebase-inappmessaging-display:17.0.4'
implementation 'com.google.firebase:firebase-core:16.0.6'
implementation 'com.android.support:design:28.0.0'
implementation 'co.chatsdk.chatsdk:chat-sdk-core:4.4.8'
implementation 'co.chatsdk.chatsdk:chat-sdk-ui:4.4.8'
implementation 'co.chatsdk.chatsdk:chat-sdk-firebase-adapter:4.4.8'
implementation 'co.chatsdk.chatsdk:chat-sdk-firebase-file-storage:4.4.8'
implementation 'com.android.support:recyclerview-v7:28.0.0'

我厌倦了我在互联网上找到的每一个修复建议，但没有任何效果:(。我希望你们能帮助我。 如果您需要我的 MainActivity 或我的 Grandle 文件，请说出来！ 先感谢您！

已修复

Answer 1

Android 支持库不再维护。因此建议改用AndroidX Library。

使用 AndroidX 的 FloatingActionButton：

1.在 gradle 中添加：

implementation 'com.google.android.material:material:1.1.0'

2。添加到您的布局中：

<com.google.android.material.floatingactionbutton.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="end|bottom"
    android:src="@drawable/share_button"
    android:layout_margin="16dp" />

Answer 2

对于 2019 年 2 月后仍有此问题的任何人，如果您使用的是 androidx 或新的材料库，则出现此问题是因为 Google 更改了使用 androidx 的库的命名格式..您可以查看此官方映射 @987654321 @ 并搜索您的库以查看新名称是什么，现在 Google 在 androidx 中

在您的情况下，您的 xml 文件中的库“android.support.design.widget.FloatingActionButton”现在被称为使用 com.google.android.material.floatingactionbutton。浮动操作按钮

Answer 3

您是否在项目中添加了 android 支持库？如果不试试这个：

implementation "com.android.support:design:28.0.0"

有关如何设置支持库的更多详细信息，您可以查看此 https://developer.android.com/topic/libraries/support-library/setup

Answer 4

将此添加到您的 gradle 中：

implementation com.android.support:design:28.0.0