无法实例化应用程序com.android.tools.fd.runtime.BootstrapApplication

Question

我遇到了这个错误，尝试了一些在这里找到的解决方案，但它们没有起作用。 我不知道为什么以及如何解决它。 请帮忙。

Android Studio 2.1.2

07-12 18:28:46.742 642-642/com.vuforia.samples.VuforiaSamples E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.vuforia.samples.VuforiaSamples, PID: 642
java.lang.RuntimeException: Unable to instantiate application com.android.tools.fd.runtime.BootstrapApplication: java.lang.ClassNotFoundException: Didn't find class "com.android.tools.fd.runtime.BootstrapApplication" on path: DexPathList[[zip file "/data/app/com.vuforia.samples.VuforiaSamples-2/base.apk"],nativeLibraryDirectories=[/data/app/com.vuforia.samples.VuforiaSamples-2/lib/arm, /data/app/com.vuforia.samples.VuforiaSamples-2/base.apk!/lib/armeabi-v7a, /vendor/lib, /system/lib]]
    at android.app.LoadedApk.makeApplication(LoadedApk.java:676)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6294)
    at android.app.ActivityThread.access$1800(ActivityThread.java:222)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1861)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:158)
    at android.app.ActivityThread.main(ActivityThread.java:7229)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

Caused by: java.lang.ClassNotFoundException: Didn't find class "com.android.tools.fd.runtime.BootstrapApplication" on path: DexPathList[[zip file "/data/app/com.vuforia.samples.VuforiaSamples-2/base.apk"],nativeLibraryDirectories=[/data/app/com.vuforia.samples.VuforiaSamples-2/lib/arm, /data/app/com.vuforia.samples.VuforiaSamples-2/base.apk!/lib/armeabi-v7a, /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:1004)
    at android.app.LoadedApk.makeApplication(LoadedApk.java:666)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6294)        at android.app.ActivityThread.access$1800(ActivityThread.java:222) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1861) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:158) 
    at android.app.ActivityThread.main(ActivityThread.java:7229) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 

Suppressed: java.lang.ClassNotFoundException: com.android.tools.fd.runtime.BootstrapApplication
    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

- Nao Ikeda

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包括清单。 - Zoe stands with Ukraine

Answer 1

经过一番搜索，我找到了这个解决方案。

原因是Android Studio尝试着进行即时运行。要关闭此功能，请按照以下步骤进行：

• 进入“文件”
• 点击“设置”
• 选择左侧的“构建、执行开发”
• 在侧边菜单中通过取消选中“即时交换”来禁用热拔插
• 选择“应用”，完成以上操作

为了参考，设置截图。谢谢，希望能对您有所帮助。

- yubaraj poudel