java.lang.RuntimeException：无法实例化新项目中的活动ComponentInfo - Android 3 Canary 7

我有一个问题，我把它和我的所有项目，所以我想出了一个新的项目与Android 3金丝雀7，但它总是给我同样的错误。java.lang.RuntimeException：无法实例化新项目中的活动ComponentInfo - Android 3 Canary 7

我的MacOS塞拉利昂10.12.6

这是一个全新的项目，所以我不知道该怎么办它

出现此错误的解决：

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

我的摇篮：

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' 
}

我的清单：

个

<?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>

我的摇篮Proyect设置：

# 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

你觉得我能做些什么来解决我的问题？

谢谢你的时间！

来源

2017-07-24 Esteban Castiblanco Moncaleano

请向我们展示您的'activity_main.xml'和'MainActivity.java' –