Android Studio: Error inflating class android.support.design.widget.FloatingActionButton

Issue

Today I tried to initialize "ChatSDK" and had a few problems. Now, if I want to start my app it is crashing all time. I found this problem:

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)

Here are my Gradle dependencies:

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'
androidTestImplemenstation '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'

I tired every fix suggestion which I found at the internet but nothing worked. I hope you guys can help me.
If you need my MainActivity or my gradle file(s) please say it!
Thank you in advance!

FIXED

Solution

For any person still having this problem after febuary 2019, if you are using androidx or the new material libraries, This problem is happening because Google changed the naming format of the libraries using androidx.. you can check this official mapping https://developer.android.com/jetpack/androidx/migrate/artifact-mappings
and search for your library to see what the new name is, now that Google is in androidx

In your case, your library “android.support.design.widget.FloatingActionButton” in your xml file, is now called as using com.google.android.material.floatingactionbutton.FloatingActionButton

Answered By – Samuel Ewudzi Incoom

This Answer collected from stackoverflow, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0

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