Develop Reference

Capacitor app keeps crashing on android device when i receive an fcm notification

My app is using firebase cloud messaging for notifications along with capacitor-community-fcm.
When I receive a notification i get a popup on my screen saying "Soogroo has stopped".
here's the logcat message when the app crashes.
2021-12-18 13:40:47.335 21155-21155/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.Soogroo.soogroo, PID: 21155
java.lang.RuntimeException: Unable to instantiate service com.google.firebase.messaging.MyFirebaseMessagingService:
java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.messaging.MyFirebaseMessagingService" on path: DexPathList[[zip file "/data/app/com.Soogroo.soogroo-1/base.apk"],nativeLibraryDirectories=[/data/app/com.Soogroo.soogroo-1/lib/arm, /system/lib, /vendor/lib]]
at android.app.ActivityThread.handleCreateService(ActivityThread.java:3502)
at android.app.ActivityThread.-wrap6(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1732)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6776)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1496)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1386)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.messaging.MyFirebaseMessagingService" on path: DexPathList[[zip file "/data/app/com.Soogroo.soogroo-1/base.apk"],nativeLibraryDirectories=[/data/app/com.Soogroo.soogroo-1/lib/arm, /system/lib, /vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:3499)
at android.app.ActivityThread.-wrap6(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1732)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6776)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1496)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1386)
It's saying it can't find the firebase class "com.google.firebase.messaging.MyFirebaseMessagingService" but i dont know why that is.
heres my androidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.Soogroo.soogroo">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode" android:name="com.Soogroo.soogroo.MainActivity" android:label="#string/title_activity_main" android:theme="#style/AppTheme.NoActionBarLaunch" android:launchMode="singleTask">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_paths"></meta-data>
</provider>
<service
android:name="com.google.firebase.messaging.MyFirebaseMessagingService"
android:enabled="true"
android:exported="true"
>
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
</application>
<!-- Permissions -->
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
heres my app/build.gardle
apply plugin: 'com.android.application'
android {
compileSdkVersion rootProject.ext.compileSdkVersion
defaultConfig {
applicationId "com.Soogroo.soogroo"
minSdkVersion rootProject.ext.minSdkVersion
targetSdkVersion rootProject.ext.targetSdkVersion
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
aaptOptions {
// Files and dirs to omit from the packaged assets dir, modified to accommodate modern web apps.
// Default: https://android.googlesource.com/platform/frameworks/base/+/282e181b58cf72b6ca770dc7ca5f91f135444502/tools/aapt/AaptAssets.cpp#61
ignoreAssetsPattern '!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~'
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
repositories {
flatDir{
dirs '../capacitor-cordova-android-plugins/src/main/libs', 'libs'
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation "androidx.appcompat:appcompat:$androidxAppCompatVersion"
implementation project(':capacitor-android')
testImplementation "junit:junit:$junitVersion"
androidTestImplementation "androidx.test.ext:junit:$androidxJunitVersion"
androidTestImplementation "androidx.test.espresso:espresso-core:$androidxEspressoCoreVersion"
implementation project(':capacitor-cordova-android-plugins')
implementation platform('com.google.firebase:firebase-bom:29.0.3')
implementation 'com.google.firebase:firebase-messaging'
implementation 'com.google.firebase:firebase-analytics'
}
apply from: 'capacitor.build.gradle'
try {
def servicesJSON = file('google-services.json')
if (servicesJSON.text) {
apply plugin: 'com.google.gms.google-services'
}
} catch(Exception e) {
logger.warn("google-services.json not found, google-services plugin not applied.
Push Notifications won't work")
}
heres my root build.gradle
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:4.2.1'
classpath 'com.google.gms:google-services:4.3.10'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
apply from: "variables.gradle"
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
any help is much appreciated.

java.lang.RuntimeException: Unable to get provider com.google.firebase.provider.FirebaseInitProvider

When i trying to run my project this error showing
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.kishankalola.earnbyspin, PID: 11122
java.lang.RuntimeException: Unable to get provider com.google.firebase.provider.FirebaseInitProvider: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.provider.FirebaseInitProvider" on path: DexPathList[[zip file "/data/app/com.kishankalola.earnbyspin-1/base.apk"],nativeLibraryDirectories=[/data/app/com.kishankalola.earnbyspin-1/lib/arm64, /system/lib64, /vendor/lib64, /system/vendor/lib64]]
at android.app.ActivityThread.installProvider(ActivityThread.java:6054)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5611)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5550)
at android.app.ActivityThread.-wrap2(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1628)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:203)
at android.app.ActivityThread.main(ActivityThread.java:6328)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1076)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:937)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.firebase.provider.FirebaseInitProvider" on path: DexPathList[[zip file "/data/app/com.kishankalola.earnbyspin-1/base.apk"],nativeLibraryDirectories=[/data/app/com.kishankalola.earnbyspin-1/lib/arm64, /system/lib64, /vendor/lib64, /system/vendor/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at android.app.ActivityThread.installProvider(ActivityThread.java:6039)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5611) 
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5550) 
at android.app.ActivityThread.-wrap2(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1628) 
at android.os.Handler.dispatchMessage(Handler.java:110) 
at android.os.Looper.loop(Looper.java:203) 
at android.app.ActivityThread.main(ActivityThread.java:6328) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1076) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:937) 
app level gradle file
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.kishankalola.earnbyspin"
minSdkVersion 21
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:design:27.1.1'
implementation 'com.google.firebase:firebase-core:11.8.0'
implementation 'com.google.firebase:firebase-auth:11.8.0'
implementation 'com.google.firebase:firebase-database:11.8.0'
implementation 'com.google.firebase:firebase-firestore:11.8.0'
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'
}
apply plugin: 'com.google.gms.google-services'
project level gradle file
// Top-level build file where you can add configuration options common to all
sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.1.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
classpath 'com.google.gms:google-services:4.0.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
Android Menifest file
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.kishankalola.earnbyspin">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".LoginActivity" />
<activity android:name=".RegisterActivity" />
<activity android:name=".SetupActivity" />
<activity android:name=".ForgotePassword" />
<activity android:name=".RedeemActivity" />
<activity android:name=".PaypalActivity" />
<activity android:name=".PaytmActivity"/>
</application>

java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.measurement.AppMeasurement" on path: DexPathList

My app was running well but it is crashing now. I started getting warnings even though I am not integrating with firebase. Now I think that I can not solve this problem. I tried every possible solution available on stackoverflow. Also, I am using viewpager in my code if that helps.
LogCat
W/Ads: Invoke Firebase method getInstance error.
java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.measurement.AppMeasurement" on path: DexPathList[[zip file "/data/app/com.kidsbox.android.abcforkidsalphabetshapesandnumbers-1/base.apk"],nativeLibraryDirectories=[/data/app/com.kidsbox.android.abcforkidsalphabetshapesandnumbers-1/lib/arm, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at com.google.android.gms.ads.internal.scionintegration.b.a(:com.google.android.gms.DynamiteModulesA:167)
at com.google.android.gms.ads.internal.scionintegration.b.a(:com.google.android.gms.DynamiteModulesA:152)
at com.google.android.gms.ads.internal.scionintegration.b.g(:com.google.android.gms.DynamiteModulesA:43)
at com.google.android.gms.ads.internal.request.c.a(:com.google.android.gms.DynamiteModulesA:26)
at com.google.android.gms.ads.internal.util.b.run(:com.google.android.gms.DynamiteModulesA:4)
at com.google.android.gms.ads.internal.util.af.call(:com.google.android.gms.DynamiteModulesA:3)
at com.google.android.gms.ads.internal.util.ag.run(:com.google.android.gms.DynamiteModulesA:3)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:423)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.measurement.AppMeasurement
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 13 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
Manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.kidsbox.android.abcforkidsalphabetshapesandnumbers">
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Alphabet" />
<activity android:name=".Number" />
<activity android:name=".Shapes"/>
</application>
Build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.kidsbox.android.abcforkidsalphabetshapesandnumbers"
minSdkVersion 16
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.google.android.gms:play-services-ads:11.0.4'
testCompile 'junit:junit:4.12'
}

I think this issue is similar with How to enable multidexing with the new Android Multidex support library
Add implementation "com.android.support:multidex:1.0.1" in your build.gradle's dependencies ( implementation can be replaced with compile );
Add a custom application extends from Application. Add code as below:
override fun attachBaseContext(base: Context?) {
super.attachBaseContext(base)
MultiDex.install(this)
}
Add your custom application in AnroidManifest.xml as android:name=".CustomApplication"

You should use compile 'com.google.firebase:firebase-ads:11.2.0'
instead of compile 'com.google.android.gms:play-services-ads:11.2.0'

Unable to instantiate activity ComponentInfo Android Studio 2.3.2

`
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
`I created a sample project and shared the debug .apk file via google drive and tried to install it crashed. I could install the application from USB without a problem. I am getting following. I posted my gradle file. not sure what's going on
05-22 11:54:57.363 22469-22469/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: chin.demo.app.com.nm, PID: 22469
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{chin.demo.app.com.nm/chin.demo.app.com.nm.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "chin.demo.app.com.nm.MainActivity" on path: DexPathList[[zip file "/data/app/chin.demo.app.com.nm-1/base.apk"],nativeLibraryDirectories=[/data/app/chin.demo.app.com.nm-1/lib/arm, /vendor/lib, /system/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.ClassNotFoundException: Didn't find class "chin.demo.app.com.nm.MainActivity" on path: DexPathList[[zip file "/data/app/chin.demo.app.com.nm-1/base.apk"],nativeLibraryDirectories=[/data/app/chin.demo.app.com.nm-1/lib/arm, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.app.Instrumentation.newActivity(Instrumentation.java:1067)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2317)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
at android.app.ActivityThread.-wrap11(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
Suppressed: java.lang.ClassNotFoundException: chin.demo.app.com.nm.MainActivity
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 12 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "chin.demo.app.com.nm"
minSdkVersion 15
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
}
`

Try this command in your CMD/Terminal to build apk : gradlew assembleDebug

Generate apk file using AndroidStudio
BUILD -> Build APK
OR
// Enabling multidex support.
multiDexEnabled true
OR
Right click on your project and select Properties.
Select Java Build Path from the menu on the left.
Select the Order and Export tab.
From the list make sure the libraries or external jars you added to your project are checked.
Finally, clean your project & run.
Hope it works.

Class not found using the boot class loader; no stack trace available

i got simmilar post but nothing working
i have android studio 2.3.1
gradle version 2.3.1
appcompat-v7:25.3.1
I create a new project by android studio(one that is automatically created by Android Studio(Hello Word)). I haven't write any thing in it.
When i install app using usb via android studio it works perfectly
but same app if i open it from it's icon ,i got these errors
One more i noticed that size of apk is 500-600kb ,early it used to be around for hello world(default by android studio) Apk 2.3Mb
FATAL EXCEPTION: main
Process: in.codebucket.check, PID: 32397
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{in.codebucket.check/in.codebucket.check.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "in.codebucket.check.MainActivity" on path: DexPathList[[zip file "/data/app/in.codebucket.check-1/base.apk"],nativeLibraryDirectories=[/data/app/in.codebucket.check-1/lib/x86, /vendor/lib, /system/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.ClassNotFoundException: Didn't find class "in.codebucket.check.MainActivity" on path: DexPathList[[zip file "/data/app/in.codebucket.check-1/base.apk"],nativeLibraryDirectories=[/data/app/in.codebucket.check-1/lib/x86, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.app.Instrumentation.newActivity(Instrumentation.java:1067)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2317)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
at android.app.ActivityThread.-wrap11(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
Suppressed: java.lang.ClassNotFoundException: in.codebucket.check.MainActivity
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 12 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
My xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="in.codebucket.check.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
My MainActivity
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}}
my Manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="in.codebucket.check">
<application
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
gradle(Module:App)
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "in.codebucket.check"
minSdkVersion 16
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro'
}}}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-
core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
}
gradle(Project)
// Top-level build file where you can add configuration options common to
all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

Got the solution ,it is happening because of instant run,
Just disable it
Goto :
Android Studio --> File --> Setting --> Build, execution, deploy --> Instant run.

No need to disable instant run, just remove the app from device/emulator and clean the project and install it again.

For me the problem was that the Gradle dependencies wen't matching. Here's what solved it for me:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "26.0.0"
defaultConfig {
applicationId "com.and.myApp"
minSdkVersion 19
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
externalNativeBuild {
cmake {
cppFlags "-fexceptions"
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'jp.wasabeef:blurry:2.1.1'
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support.constraint:constraint-layout:1.0.2'
//noinspection GradleCompatible
compile 'com.android.support:cardview-v7:25.3.1'
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:design:26.+'
}

For me, it is after I add the code to use getFusedLocationProviderClient, I get crashes
process: no.onmyway133.myapp, PID: 10538
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/api/Api$zzf;
at com.google.android.gms.location.LocationServices.<clinit>(Unknown Source)
at com.google.android.gms.location.LocationServices.getFusedLocationProviderClient(Unknown Source)
at no.onmyway133.myapp.maps.MapsActivity.onCreate(MapsActivity.kt:22)
The problem is the warning in build.gradle, it warns that both should use the same version, otherwise there will be potential for runtime crashes.
So the fix is to specify the same version
implementation 'com.google.android.gms:play-services-maps:15.0.1'
implementation "com.google.android.gms:play-services-location:15.0.1"