我花了好几个小时来解决这个问题,但是在针对类似问题的几十个回复之间找不到解决方案。
所以我的问题就出现了。我正在创建一个简单的multidex Android应用程序,我需要在app启动时执行一些操作。所以,我已经扩展了MultiDexApplication类,在AndroidManifest.xml文件中添加了应用程序元素的类路径,但每次运行它时崩溃都有以下异常:
java.lang.RuntimeException: Unable to instantiate application rmpt.app.MyApplication: java.lang.ClassNotFoundException: Didn't find class "rmpt.app.MyApplication" on path: DexPathList[[zip file "/data/app/rmpt.app-1.apk"],nativeLibraryDirectories=[/data/app-lib/rmpt.app-1, /vendor/lib, /system/lib, /system/lib/arm]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:509)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4472)
at android.app.ActivityThread.access$1300(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:5162)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:744)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "rmpt.app.MyApplication" on path: DexPathList[[zip file "/data/app/rmpt.app-1.apk"],nativeLibraryDirectories=[/data/app-lib/rmpt.app-1, /vendor/lib, /system/lib, /system/lib/arm]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newApplication(Instrumentation.java:975)
at android.app.LoadedApk.makeApplication(LoadedApk.java:504)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4472)
at android.app.ActivityThread.access$1300(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:5162)
at java.lang.reflect.Method.invokeNative(Native Method)
如果我从AndroidManifest.xml文件中删除android:name属性(所以它使用默认的android Application类)一切正常,但我需要在我的onCreate方法上执行一些操作应用
我把文件留在这里,这样你就可以看到它们,也许看错了(我已经有2天试图为我解决这个问题了)
的AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="rmpt.app">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme"
android:name=".MyApplication">
<activity android:name=".view.LoginActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
MyApplication.java
package rmpt.app;
import android.support.multidex.MultiDexApplication;
public class MyApplication extends MultiDexApplication {
@Override
public void onCreate() {
super.onCreate();
// do my stuff
}
}
的build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "rmpt.app"
minSdkVersion 18
targetSdkVersion 23
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
jackOptions {
enabled true
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dexOptions {
javaMaxHeapSize "2g"
}
packagingOptions{
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/LICENSE'
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:multidex:1.0.1'
compile 'com.google.android.gms:play-services:9.4.0'
compile 'com.android.support:design:23.4.0'
}
我正在使用MacOS 10.11.6
答案 0 :(得分:0)
请按照at this link的说明操作。他们修复了您遇到的错误。
主要的classes.dex必须包含调用所需的类 这类方法。
即,MyApplication必须是classes.dex的一部分,因为它调用MultiDex #install(Context)方法。上述链接中的说明可帮助您确定主要dex文件中必须包含哪些类(classes.dex)