Couldn't find class in spite of the fact that Dex is enabled - eclipse

Question

I am trying to migrate an app from Eclipse to the android studio I have just the files and the last person who was writing it in eclipse didn't export it for importing project. I have started a new project and manually imported the files and the lib files and tried to solve the errors till the program is now running with no Gradle errors. now I am in this situation that the dex in Gradle is enabled but when I run the program it is confused and tells me it doesn't recognize some classes.
this is my manifest file
<permission
android:name="com.company.MyProject.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<supports-screens android:smallScreens="true" />
<supports-screens android:normalScreens="true" />
<supports-screens android:largeScreens="true" />
<supports-screens android:xlargeScreens="true" />
<supports-screens android:anyDensity="true" />
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SECURE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_CONFIGURATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="com.company.MyProject.permission.MAPS_RECEIVE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.CLEAR_APP_CACHE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<permission
android:name="com.company.MyProject.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.company.MyProject.permission.C2D_MESSAGE" />
<!-- App receives GCM messages. -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<!-- GCM requires a Google account. -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<!-- Keeps the processor from sleeping when a message is received. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:name="com.company.MyProject.TruckApplication"
android:allowBackup="true"
android:icon="#drawable/MyProject_logo"
android:label="#string/app_name"
android:largeHeap="true"
android:sharedUserId="android.uid.system"
android:theme="#style/AppTheme" >
<uses-library android:name="com.google.android.maps" />
<activity
android:name="com.company.MyProject.Authenticate_user_Activity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.company.MyProject.Login_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.SubmitWaiver_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.PrepStopChoice"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<!--<activity-->
<!--android:name="com.company.MyProject.Surveyold_Activity"-->
<!--android:configChanges="keyboardHidden|orientation|screenSize"-->
<!--android:screenOrientation="portrait" >-->
<!--</activity>-->
<activity
android:name="com.company.MyProject.GetStops_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.Load_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.AddComment_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustResize" >
</activity>
<activity
android:name="com.company.MyProject.StopDetail_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.CaptureImage_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.Survey_Activity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.GetDirection_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.Map_FragmentActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.TabBar"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.ShowStopList_Activity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="portrait" >
</activity>
<activity
android:name="com.company.MyProject.PrepActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:screenOrientation="landscape" >
</activity>
<activity
android:name="com.company.MyProject.TransprentActivity"
android:noHistory="true"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Translucent.NoTitleBar"
android:windowSoftInputMode="stateHidden|adjustPan" >
</activity>
<receiver
android:name="com.google.android.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="com.company.MyProject" />
</intent-filter>
</receiver>
<service android:name="com.MyProject.Service.SyncService" >
</service>
<receiver android:name="com.MyProject.BrodcastReciver.NetworkStateReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
<receiver android:name="com.company.MyProject.RepeatingAlarmService" />
<receiver android:name="com.company.MyProject.RepeatingAlaramCommunication" />
<receiver android:name="com.company.MyProject.ReaptingAlramNewStops" />
<service android:name="com.MyProject.Service.LogoutService" >
</service>
<service android:name="com.MyProject.Service.CallNewStop_Service" >
</service>
<service android:name="com.MyProject.Service.CheckingGooglePlayVersionService" >
</service>
<receiver
android:name="com.MyProject.BrodcastReciver.DateTimeChangeReceiver"
android:enabled="true"
android:exported="false" >
<intent_filter>
<action android:name="android.intent.action.DATE_CHANGED" />
</intent_filter>
</receiver>
<!-- Start the Service if applicable on boot -->
<receiver android:name="com.MyProject.BrodcastReciver.PhoneReStartReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service
android:name="com.company.MyProject.TruckLocationUpdateService"
android:enabled="true" />
<service
android:name="com.company.MyProject.TruckCommubicationcountService"
android:enabled="true" />
<service android:name="com.company.MyProject.GCMIntentService" />
<service android:name="com.company.MyProject.HandleNotification" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyB6Ae82d_eLZ1nMYIW7EaaQ3-2-Xn7duHs" />
<!-- android:value="AIzaSyAkZzWl6FSP89yWf7VeX6ooYvd6SuRnV4E" /> -->
</application>
<!--<uses-permission-->
<!--android:name="android.permission.ACCESS_MOCK_LOCATION"-->
<!--android:required="false" />-->
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />
<uses-permission
android:name="android.permission.FLASHLIGHT"
android:permissionGroup="android.permission-group.HARDWARE_CONTROLS"
android:protectionLevel="normal"
android:required="false" />
this is my gradle File
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
useLibrary 'org.apache.http.legacy'
defaultConfig {
applicationId "com.company.MyProject"
minSdkVersion 14
targetSdkVersion 25
versionCode 70
versionName "7.4"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
}
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-v4:25'
testCompile 'junit:junit:4.12'
// compile fileTree(include: '*.jar', dir: 'libs')
compile 'com.google.android.gms:play-services:10.2.1'
// compile "com.google.android.gms:play-services-gcm:10.2.1"
// compile 'org.apache.httpcomponents:httpmime:4.5.3'
// compile files('libs/gson-2.2.4.jar')
// compile files('libs/httpmime-4.2.2.jar')
// compile files('libs/joda-time-2.1.jar')
// compile files('libs/universal-image-loader-1.9.4.jar')
compile files('libs/android-support-v4.jar')
}
And this is my error log
AndroidRuntime: FATAL EXCEPTION: main
Process: com.company.MyProject, PID: 27974
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.company.MyProject/com.company.MyProject.Authenticate_user_Activity}: java.lang.ClassNotFoundException: Didn't find class "com.company.MyProject.Authenticate_user_Activity" on path: DexPathList[[zip file "/system/framework/com.google.android.maps.jar", zip file "/data/app/com.company.MyProject-2/base.apk", zip file "/data/app/com.company.MyProject-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.company.MyProject-2/lib/arm64, /system/lib64, /vendor/lib64]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2567)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.company.MyProject.Authenticate_user_Activity" on path: DexPathList[[zip file "/system/framework/com.google.android.maps.jar", zip file "/data/app/com.company.MyProject-2/base.apk", zip file "/data/app/com.company.MyProject-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.company.MyProject-2/lib/arm64, /system/lib64, /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.Instrumentation.newActivity(Instrumentation.java:1078)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2557)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6119) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 
Suppressed: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/MyProject/Interface/Authenticate_Interface;
at java.lang.VMClassLoader.findLoadedClass(Native Method)
at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:742)
at java.lang.ClassLoader.loadClass(ClassLoader.java:362)
... 12 more
04-04 19:37:17.028 27974-27974/com.company.MyProject E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "com.MyProject.Interface.Authenticate_Interface" on path: DexPathList[[zip file "/system/framework/com.google.android.maps.jar", zip file "/data/app/com.company.MyProject-2/base.apk", zip file "/data/app/com.company.MyProject-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.company.MyProject-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.company.MyProject-2/lib/arm64, /system/lib64, /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)
... 15 more
could you guys please help me to solve my problem.