这是我尝试过的一系列事项：
在Manifest中添加MultiDexApplication行之前，我得到了以下stacktrace：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.prajjwal.myfreight_0, PID: 27367
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.prajjwal.myfreight_0/com.prajjwal.myfreight_0.Splash}: java.lang.ClassNotFoundException: Didn't find class "com.prajjwal.myfreight_0.Splash" on path: DexPathList[[zip file "/data/app/com.prajjwal.myfreight_0-1/base.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2486)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2656)
at android.app.ActivityThread.access$800(ActivityThread.java:178)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1512)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5692)
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:959)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.prajjwal.myfreight_0.Splash" on path: DexPathList[[zip file "/data/app/com.prajjwal.myfreight_0-1/base.apk"],nativeLibraryDirectories=[/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:1074)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2463)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2656)
at android.app.ActivityThread.access$800(ActivityThread.java:178)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1512)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5692)
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:959)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)
Suppressed: java.lang.ClassNotFoundException: com.prajjwal.myfreight_0.Splash
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
添加该行之后，我得到了这个：
12-30 16:44:12.980 5272-5272/prajjwal.com.myfreight E/AndroidRuntime: FATAL EXCEPTION: main
Process: prajjwal.com.myfreight, PID: 5272
java.lang.RuntimeException: Unable to instantiate application android.support.multidex.MultiDexApplication: java.lang.ClassNotFoundException: Didn't find class "android.support.multidex.MultiDexApplication" on path: DexPathList[[zip file "/data/app/prajjwal.com.myfreight-1/base.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:572)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4883)
at android.app.ActivityThread.access$1500(ActivityThread.java:178)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1573)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5692)
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:959)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.multidex.MultiDexApplication" on path: DexPathList[[zip file "/data/app/prajjwal.com.myfreight-1/base.apk"],nativeLibraryDirectories=[/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.newApplication(Instrumentation.java:988)
at android.app.LoadedApk.makeApplication(LoadedApk.java:567)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4883)
at android.app.ActivityThread.access$1500(ActivityThread.java:178)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1573)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5692)
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:959)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)
Suppressed: java.lang.ClassNotFoundException: android.support.multidex.MultiDexApplication
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
我在我的智慧结束时会感激任何帮助。
编辑：第一个堆栈跟踪来自旧项目，第二个来自我创建的新项目
的build.gradle：
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "26.0.0"
defaultConfig {
applicationId "prajjwal.com.myfreight"
minSdkVersion 16
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dexOptions {
javaMaxHeapSize "5120"
}
afterEvaluate {
tasks.matching {
it.name.startsWith('dex')
}.each { dx ->
if (dx.additionalParameters == null) {
dx.additionalParameters = ['--multi-dex']
} else {
dx.additionalParameters += '--multi-dex'
}
}
}
subprojects {
project.plugins.whenPluginAdded { plugin ->
if ("com.android.build.gradle.AppPlugin".equals(plugin.class.name)) {
project.android.dexOptions.preDexLibraries = false
} else if ("com.android.build.gradle.LibraryPlugin".equals(plugin.class.name)) {
project.android.dexOptions.preDexLibraries = false
}
}
}
}
dependencies {
/*implementation 'com.android.support:appcompat-v7:25.4.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'*/
compile files('libs/jtds-1.2.8-a46da18a7c06f34fb19c38538665cbe1.jar')
compile 'com.android.support:multidex:1.0.1'
compile 'com.android.support:support-v4:25.4.0'
compile 'com.android.support:gridlayout-v7:25.4.0'
compile 'com.android.support:appcompat-v7:25.4.0'
compile 'com.android.support:design:25.4.0'
compile 'com.rengwuxian.materialedittext:library:2.1.4'
compile 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
/*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'*/
}
答案 0 :(得分：0)
使用此
compileSdkVersion "26.0.0"
buildToolsVersion "26.0.0"
而不是
compileSdkVersion 25
buildToolsVersion "26.0.0"