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我在離子應用程序中做了功能改變，並在瀏覽器中通過離子服務進行了測試。一切都很順利，並繼續進行離子建設。所以它返回了我的錯誤。Android Studio的Ionic Build錯誤。
I:\myprojects\fizion>ionic package info 30
id │ 30
status │ FAILED
platform │ android
mode │ debug
started │ Jul 30th, 2017 10:32:28
output:
ANDROID_HOME=/opt/android-sdk
JAVA_HOME=/usr/lib/jvm/java-8-oracle
Error: Could not find gradle wrapper within Android SDK. Might need to update your Android SDK.
Looked here: /opt/android-sdk/tools/templates/gradle/wrapper
我不確定它的Android SDK是否建議升級。我的或離子云的？ 好吧，我試圖升級我的android studio SDK，然後開始其他問題。然後我發佈了下面的命令來傳播對android的新變化。
cordova prepare android
我已經構建了.apk文件並在手機中啓動。它崩潰了，所以在模擬器中嘗試並得到了下面的錯誤。
--------- beginning of crash
07-30 12:18:53.350 3040-3040/com.ionicframework.fizion233539 E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ionicframework.fizion233539, PID: 3040
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ionicframework.fizion233539/com.ionicframework.fizion233539.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.ionicframework.fizion233539.MainActivity" on path: DexPathList[[zip file "/data/app/com.ionicframework.fizion233539-1/base.apk"],nativeLibraryDirectories=[/data/app/com.ionicframework.fizion233539-1/lib/x86_64, /vendor/lib64, /system/lib64]]
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 "com.ionicframework.fizion233539.MainActivity" on path: DexPathList[[zip file "/data/app/com.ionicframework.fizion233539-1/base.apk"],nativeLibraryDirectories=[/data/app/com.ionicframework.fizion233539-1/lib/x86_64, /vendor/lib64, /system/lib64]]
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.NoClassDefFoundError: com.ionicframework.fizion233539.MainActivity
at dalvik.system.DexFile.defineClassNative(Native Method)
at dalvik.system.DexFile.defineClass(DexFile.java:226)
at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)
at dalvik.system.DexPathList.findClass(DexPathList.java:338)
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
... 13 more
Suppressed: java.lang.ClassNotFoundException: com.ionicframework.fizion233539.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
07-30 12:18:53.352 1584-1596/system_process W/ActivityManager: Force finishing activity com.ionicframework.fizion233539/.MainActivity
我的清單文件：
<?xml version='1.0' encoding='utf-8'?>
<manifest android:hardwareAccelerated="true" android:versionCode="1" android:versionName="0.0.1" package="com.ionicframework.fizion233539" xmlns:android="http://schemas.android.com/apk/res/android">
<supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:resizeable="true" android:smallScreens="true" android:xlargeScreens="true" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application android:hardwareAccelerated="true" android:icon="@drawable/icon" android:label="@string/app_name" android:supportsRtl="true">
<activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/activity_name" android:launchMode="singleTop" android:name="MainActivity" android:theme="@android:style/Theme.DeviceDefault.NoActionBar" android:windowSoftInputMode="adjustResize">
<intent-filter android:label="@string/launcher_name">
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:host="https://hs7pj.app.goo.gl/" android:scheme="https" />
</intent-filter>
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:host="fizion-f4286.firebaseapp.com" android:path="/__/auth/callback" android:scheme="https" />
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23" />
<uses-feature android:name="android.hardware.location.gps" />
</manifest>
我一直在經歷許多SO職位，嘗試了很多，但沒有解決。 我很高興分享我的android studio截圖的配置。我相信這是由於Android工作室的升級，但在哪裏破解它。
有人可以指導我我被封鎖了。
您是否嘗試清潔您的項目，然後再次構建它。 –