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java.lang.RuntimeException: Unable to instantiate application .ApplicationDetails:

Only Mi pad having that issue when run the app.
For fix that issues i have try
1. Uninstall the app and retry to connect that but get same error
2. Instant run is disable in my android studio
3. User Multi desk in build gradle
Other project is working from same android studio in same tab
Any one Have idea how to fix that .
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.uncommonsense, PID: 23808
java.lang.RuntimeException: Unable to instantiate application .application.ApplicationDetails: java.lang.ClassNotFoundException: Didn't find class ".application.ApplicationDetails" on path: DexPathList[[zip file "/data/app/com.test.apk"],nativeLibraryDirectories=[/data/app-lib/com.uncommonsense-1, /vendor/lib, /system/lib]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:507)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4328)
at android.app.ActivityThread.access$1500(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1270)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5028)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:604)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.ucsvirtualschool.application.ApplicationDetails" on path: DexPathList[[zip file "/data/app/com.uncommonsense-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.uncommonsense-1, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
at android.app.Instrumentation.newApplication(Instrumentation.java:975)
Application class
public class ApplicationDetails extends MultiDexApplication {
public static boolean isAppOpen = false;
private static ApplicationDetails mInstance;
public static final String TAG = ApplicationDetails.class.getSimpleName();
#Override
protected void attachBaseContext(Context base) {
MultiDex.install(this);
super.attachBaseContext(base);
}
#Override
public void onTerminate() {
// TODO Auto-generated method stub
super.onTerminate();
isAppOpen = false;
}
}
build gradle
defaultConfig {
applicationId "com.ucsvirtualschool"
minSdkVersion 19
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
vectorDrawables { useSupportLibrary = true }
dataBinding {
enabled = true
}
multiDexEnabled true
vectorDrawables.useSupportLibrary = true
ndk {
abiFilters "armeabi", "x86"
}
implementation 'com.android.support:multidex:1.0.3' //for solve issue in mi tab

I would think of two things based on the code snippets you provided.
You already use the MultiDexApplication so you don't need to override the attachBaseContext method
It might happen, but very unlikely that the ApplicationDetails class doesn't make it to the first dex file and that's why the app is crashing. You could try to declare the class to be required to be in the very first dex file. Declare classes required in the primary dex file

Maybe you can try this: complete the application name ".application.ApplicationDetails" with "com.ucsvirtualschool.application.ApplicationDetails" in your in AndroidManifest.xml.
<application
android:name="com.ucsvirtualschool.application.ApplicationDetails"
android:allowBackup="false"
android:hardwareAccelerated="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme"
tools:replace="android:allowBackup">

Unable to resolve java.lang.ClassNotFoundException: Didn't find class "com.example.android.camera2basic.AutoFitTextureView" in android studio?

I am trying to resolve this annoying bug and I have tried every possible option. I went through the previous SO answers and tried invalidating caches and restart. I also made sure that my support dependency in gradle are correct but for some reason my app crashes when I run it on my phone with the following errors.
Caused by: android.view.InflateException: Binary XML file line #0: Binary XML file line #0: Error inflating class com.example.android.camera2basic.AutoFitTextureView
Caused by: android.view.InflateException: Binary XML file line #0: Error inflating class com.example.android.camera2basic.AutoFitTextureView
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.android.camera2basic.AutoFitTextureView" on path: DexPathList[[zip file "/data/app/com.example.surajit.camera2apiexample-2/base.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.surajit.camera2apiexample-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.surajit.camera2apiexample-2/lib/arm, /system/lib, /vendor/lib, /system/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.view.LayoutInflater.createView(LayoutInflater.java:609)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:787)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:858)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
at com.example.surajit.camera2apiexample.Camera2BasicFragment.onCreateView(Camera2BasicFragment.java:455)
at android.app.Fragment.performCreateView(Fragment.java:2352)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:995)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1171)
at android.app.BackStackRecord.run(BackStackRecord.java:815)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1578)
at android.app.FragmentController.execPendingActions(FragmentController.java:371)
at android.app.Activity.performStart(Activity.java:6689)
12-12 17:00:55.442 8215-8215/? E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2687)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2789)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1527)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:203)
at android.app.ActivityThread.main(ActivityThread.java:6251)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)
12-12 17:00:58.120 804-903/? E/PROXIMITY: ProximitySensor: unknown event (type=3, code=0)
build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.example.surajit.camera2apiexample"
minSdkVersion 23
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(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.android.support:support-v13:27.0.2'
implementation 'com.android.support:support-v4:27.0.2'
implementation 'com.android.support:appcompat-v7:27.0.2'
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.surajit.camera2apiexample">
<uses-permission android:name="android.permission.CAMERA"/><uses-permission android:name="android.permission.FLASHLIGHT"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-feature android:name="android.hardware.camera2.full"/>
<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=".CameraActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Please help me out. I am really confused with this problem.

This is usually because you're using the wrong package name for your view. You're trying to include view with:
<com.example.android.camera2basic.AutoFitTextureView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
...
/>
which probably not the right package name if we compare it to your AndroidManifest.xml package name, i.e com.example.surajit.camera2apiexample:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.surajit.camera2apiexample">
...
</manifest>
So, change com.example.android.camera2basic.AutoFitTextureView to your View package name where the class AutoFitTextureView reside. It maybe something like this:
<com.example.surajit.camera2apiexample.AutoFitTextureView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
...
/>

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo in a New Project - Android 3 Canary 7

I have a problem, I have it with all my projects, so I came up with a new project with Android 3 Canary 7, but it always gives me the same error.
I have MacOS Sierra 10.12.6
It's a complete new project, so i don't know what to do to solve it
This error occurs:
07-24 10:25:57.776 29708-29708/com.estebanmoncaleano.myapplication
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.estebanmoncaleano.myapplication, PID: 29708
java.lang.RuntimeException: Unable to instantiate activity
ComponentInfo{com.estebanmoncaleano.myapplication/com.estebanmoncaleano.myapplication.MainActivity}:
java.lang.ClassNotFoundException: Didn't find class
"com.estebanmoncaleano.myapplication.MainActivity" on path:
DexPathList[[zip file
"/data/app/com.estebanmoncaleano.myapplication-2/base.apk", zip file
"/data/app/com.estebanmoncaleano.myapplication-2/split_lib_dependencies_apk.apk"],nativeLibraryDirectories=[/vendor/lib,
/system/lib]]
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2972)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3243)
at android.app.ActivityThread.access$1000(ActivityThread.java:218)
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1718)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6917)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
Caused by: java.lang.ClassNotFoundException: Didn't find class
"com.estebanmoncaleano.myapplication.MainActivity" on path:
DexPathList[[zip file
"/data/app/com.estebanmoncaleano.myapplication-2/base.apk", zip file
"/data/app/com.estebanmoncaleano.myapplication-2/split_lib_dependencies_apk.apk"],nativeLibraryDirectories=[/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:1094)
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2962)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3243) 
at android.app.ActivityThread.access$1000(ActivityThread.java:218) 
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1718) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:145) 
at android.app.ActivityThread.main(ActivityThread.java:6917) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) 
Suppressed: java.lang.ClassNotFoundException:
com.estebanmoncaleano.myapplication.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)
... 13 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the
boot class loader; no stack available
My Gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "26.0.0"
defaultConfig {
applicationId "com.estebanmoncaleano.myapplication"
minSdkVersion 16
targetSdkVersion 26
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'])
androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
implementation 'com.android.support:appcompat-v7:26.0.0-beta2'
testImplementation 'junit:junit:4.12'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
}
My Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.estebanmoncaleano.myapplication">
<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>
</manifest>
My Gradle Proyect Settings:
# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx1536m
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
android.enableAapt2=false
What do you think I can do to solve my problem?
Thanks for your time!

Seems instant run is broken.
Try Stop → Run(not Apply changes - yellow lighting-shape), or Clean → Rebuild.

Clean your project, rebuild and run it. That's working for me. Thanks.

NoClassDefFoundError when importing android directory picker as module

im trying to use android directory picker in an application that i am building. this is net.bgreco.DirectoryPicker. my application is called WebDownloader. it seems to run fine. and i am able to launch the directory picker application on its own but when i try to launch it as an activity from my main activity i error mentioned in the title of post.
07-15 21:36:58.740
31945-31945/com.example.zacharymcdaniel.webdownloader
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.zacharymcdaniel.webdownloader, PID: 31945
java.lang.NoClassDefFoundError: Failed resolution of:
Lnet/bgreco/R$layout;
at net.bgreco.DirectoryPicker.onCreate(DirectoryPicker.java:70)
at android.app.Activity.performCreate(Activity.java:6980)
at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6540)
at java.lang.reflect.Method.invoke(Native Method)
at
com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: java.lang.ClassNotFoundException: Didn't find class
"net.bgreco.R$layout" on path: DexPathList[[zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/base.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_dependencies_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_0_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_1_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_2_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_3_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_4_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_5_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_6_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_7_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_8_apk.apk",
zip file
"/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.zacharymcdaniel.webdownloader-y2pFpZ6io92LNAzJNpMhyw==/lib/x86,
/system/lib, /system/vendor/lib]]
at
dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:93)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at net.bgreco.DirectoryPicker.onCreate(DirectoryPicker.java:70) 
at android.app.Activity.performCreate(Activity.java:6980) 
at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213) 
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770) 
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) 
at android.app.ActivityThread.-wrap11(Unknown Source:0) 
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) 
at android.os.Handler.dispatchMessage(Handler.java:105) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6540) 
at java.lang.reflect.Method.invoke(Native Method) 
at
com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
WebDownloader and DirectoryPicker are both the top level folders in my android project structure. here is my app gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.3"
defaultConfig {
applicationId "com.example.zacharymcdaniel.webdownloader"
minSdkVersion 19
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(include: ['*.jar'], dir: 'libs')
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'
compile 'io.reactivex:rxjava:1.1.6'
compile 'io.reactivex:rxandroid:1.2.1'
compile files('libs/directorypicker.jar')
}
and my manifest:
`<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.zacharymcdaniel.webdownloader">
<uses-permission android:name="android.permission.INTERNET"/>
<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="net.bgreco.DirectoryPicker"/>
</application>
</manifest>`
and my manifest for DirectoryPicker:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="net.bgreco"
android:versionCode="2"
android:versionName="1.0.1">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".DirectoryPicker"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
i am trying to make it so that i can launch the directory picker with an Intent and startActivityForResult. please help me find out what is wrong.

Android Multidex RuntimeException

I am trying to solve a problem with running Android app that has over 65k methods.
I have followed Google docs about Multidex support, however I'm still unable to run it successfully. It seems that the problem appears only on SDK less than 21, because when I specify minSdkVersion 21, it works well, however once I set it to minSdkVersion 15, I am getting following exception.
FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate application custom.package.name.MyApplication: java.lang.ClassNotFoundException: Didn't find class "custom.package.name.MyApplication" on path: DexPathList[[zip file "/data/app/custom.package.name-2/base.apk"],nativeLibraryDirectories=[/data/app/custom.package.name-2/lib/arm, /vendor/lib, /system/lib]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:578)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4680)
at android.app.ActivityThread.-wrap1(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1405)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.ClassNotFoundException: Didn't find class "custom.package.name.MyApplication" on path: DexPathList[[zip file "/data/app/custom.package.name-2/base.apk"],nativeLibraryDirectories=[/data/app/custom.package.name-2/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.newApplication(Instrumentation.java:981)
at android.app.LoadedApk.makeApplication(LoadedApk.java:573)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4680) 
at android.app.ActivityThread.-wrap1(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1405) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
Suppressed: java.io.IOException: Failed to open dex files from /data/app/custom.package.name-2/base.apk
at dalvik.system.DexFile.openDexFileNative(Native Method)
at dalvik.system.DexFile.openDexFile(DexFile.java:295)
at dalvik.system.DexFile.<init>(DexFile.java:80)
at dalvik.system.DexFile.<init>(DexFile.java:59)
at dalvik.system.DexPathList.loadDexFile(DexPathList.java:279)
at dalvik.system.DexPathList.makePathElements(DexPathList.java:248)
at dalvik.system.DexPathList.<init>(DexPathList.java:120)
at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:48)
at dalvik.system.PathClassLoader.<init>(PathClassLoader.java:65)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:58)
at android.app.LoadedApk.getClassLoader(LoadedApk.java:376)
at android.app.LoadedApk.makeApplication(LoadedApk.java:568)
... 9 more
Suppressed: java.lang.ClassNotFoundException: custom.package.name.MyApplication
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
Logcat before fatal exception
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg --instruction-set=arm --instruction-set-features=smp,div,atomic_ldrd_strd --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=krait --instruction-set-features=default --dex-file=/data/app/custom.package.name-2/base.apk --oat-file=/data/dalvik-cache/arm/data#app#custom.package.name-2-2#base.apk#classes.dex) because non-0 exit status
W/art: Failure to verify dex file '/data/app/ccustom.package.name-2-2/base.apk': Invalid method name: '_clinit#1433781298707#0'
W/System: ClassLoader referenced unknown path: /data/app/custom.package.name-2-2/lib/arm
Here is what I've done so far:
created class called MyApplication that extends Application and specified it in AndroidManifest.xml file
added dependency to build.gradle file
compile 'com.android.support:multidex:1.0.1'
enabled multidex in build.gradle
multiDexEnabled true
enabled multidex in MyApplication class
#Override
protected void attachBaseContext(Context base) {
super.attachBaseContext(base);
MultiDex.install(this);
}
Thanks in advance for any help!

Try this, this is working for me, pretty much copied from a current project....
build.gradle
android {
compileSdkVersion 23
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "my.package.name"
minSdkVersion 16
targetSdkVersion 23
multiDexEnabled = true
versionCode 3
versionName "0.1.2"
renderscriptTargetApi 14
renderscriptSupportModeEnabled true
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:multidex:1.0.1'
}
Application Class
public class MyApp extends MultiDexApplication {
#Override
public void onCreate() {
super.onCreate();
}
}
Manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
...
<application
android:name=".MyApp"
android:allowBackup="true"
android:hardwareAccelerated="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
...
It is worth noting that I had a similar issue until i added the READ permission and extends MultiDexApplication

Problem is because of this obfuscator:
<dependency>
<groupId>net.java.truelicense</groupId>
<artifactId>truelicense-obfuscate</artifactId>
<version>${truelicense.obfuscate.version}</version>
</dependency>