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

今天我尝试初始化“ChatSDK”，但遇到了一些问题。现在，如果我想启动我的应用程序，它总是会崩溃。我发现这个问题：

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)

我厌倦了在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。 如果您需要我的主要活动或我的大文件，请说出来！ 提前谢谢你

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修复了

您是否向项目中添加了android支持库？如果没有，请尝试此支持库：

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

有关如何设置支持库的更多详细信息，请选中此项

---

将此添加到您的渐变中：

implementation com.android.support:design:28.0.0

---

对于2019年2月后仍存在此问题的任何人，如果您使用androidx或新材料库，则会发生此问题，因为Google使用androidx更改了库的命名格式。您可以查看此官方映射 搜索你的库，看看新的名字是什么，现在谷歌已经在androidx中了

---

在您的例子中，xml文件中的库“android.support.design.widget.FloatingActionButton”现在被称为使用com.google.android.material.FloatingActionButton.FloatingActionButton

android支持库。因此建议改用它

使用AndroidX的浮动操作按钮：

1.添加渐变：

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

<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" />

2.添加布局：

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

<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" />

您是否已将

支持库

添加到您的gradle文件中？我不是舒尔，它是一个实现吗？谷歌折旧游戏还在继续。我搜索了一个小时，终于没有浪费。