dex | 易学教程

Multiple dex files define <my package>/BuildConfig, can't find the cause:

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I'm using the new gradle build system and I'm facing the following problem: UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define Lcom/kibo/mobi/BuildConfig; at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:594) at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:552) at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:533) at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:170) at com.android.dx.merge.DexMerger.merge(DexMerger.java:188) at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439

Android Gradle: What is javaMaxHeapSize “4g”?

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In an android project, build.gradle file, I have been through this line dexOptions{ javaMaxHeapSize "4g" } I would like to know the exact purpose of this javaMaxHeapSize and what does that 4g means. What are other values I can give ? Stanislav As it mentioned in the answer above , it is just an option to specify the maximum memory allocation pool for a Java Virtual Machine (JVM) for dex operation. And it's the same, as to provide to java the -xmx argument. Due to it's source codes from here , it's setter look like: if (theJavaMaxHeapSize.matches("\\d+[kKmMgGtT]?")) { javaMaxHeapSize =

Multiple dex files define Lcom/google/android/gms/internal/measurement/zzabn

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问题 Since this morning I cannot build my Android app because I get this error What went wrong: Execution failed for task ':app:transformDexArchiveWithDexMergerForDebug'. com.android.build.api.transform.TransformException: com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/measurement/zzabn; I have tried bumping the Firebase versions accordingly to 15.0.2 but then I get an other error... Task :app:processDebugGoogleServices Found com.google.android.gms:play

Error while installing application (INSTALL_FAILED_DEXOPT)

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问题 I am working with ccr4j API in Android so when I run my project its thrown an error like: Error while installing application (INSTALL_FAILED_DEXOPT) I find from net and same site also, did all trying like, 1. Uninstalled same application from device. 2. Run Emulator with Wipe User Data. But still same error comes. So anyone know why its thrown this kind of error? 回答1: This most likely has to do with the size of classes.dex. On anything pre-ICS dexopt will fail on anything over 5mb. Check the

How to solve the issue with Dalvik compiler limitation on 64K methods?

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问题 My team and I have inherited a large Android project from another team. The whole application with all the included libraries is reported to have around 35000 methods. We now have the task to implement a new service in the app where we need to use Protocol Buffers. The problem is that the generated .jar file with all the required .proto files creates another couple of 35000 methods, that's 70000 methods. And if you are not aware, the Android compiler has a limitation of 65536 methods per .dex

After update of AS to 1.0, getting “method ID not in [0, 0xffff]: 65536” error in project

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I updated Android Studio to the latest version, and let it "fix the project" and the like - but now my project does not compile, gives me FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:dexDebug'. > com.android.ide.common.internal.LoggedErrorException: Failed to run command: D:\VGA\AndroidStudio\sdk\build-tools\21.1.1\dx.bat --dex --no-optimize --output D:\VGA\Projects\Sales-App\Android-Project\svn\android\app\build\intermediates\dex\debug --input-list=D:\VGA\Projects\Sales-App\Android-Project\svn\android\app\build\intermediates\tmp\dex\debug

Android Class not found : Didn't find class … on path: DexPathList : link of class failed :

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问题 I am doing work on social network under guidence of github project on it. I have main activity named SocialMainActivity that import OAuth as lib and OAuth import facebook lib, facebool lib import google-play-service and support-v7 as lib. I delete multiple jar file and store all jar file in facebook lib, so success to remove error multiple dex file, on jar file. But after remove that error i face new error Class not found SocialMainActivity on path: DexPathList etc. I so much googling and

Android dvm的进程和Linux的进程, 应用程序的进程是否为同一个概念

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DVM指dalivk的虚拟机。每一个Android应用程序都在它自己的进程中运行，都拥有一个独立的Dalvik虚拟机实例。而每一个DVM都是在Linux 中的一个进程，所以说可以认为是同一个概念。什么是android DVM:Dalvik是Google公司自己设计用于Android平台的Java虚拟机,每一个Dalvik 应用作为一个独立的Linux 进程执行。独立的进程可以防止在虚拟机崩溃的时候所有程序都被关闭。 Dalvik和Java运行环境的区别　　 1：Dalvik主要是完成对象生命周期管理，堆栈管理，线程管理，安全和异常管理，以及垃圾回收等等重要功能。　　 2：Dalvik负责进程隔离和线程管理，每一个Android应用在底层都会对应一个独立的Dalvik虚拟机实例，其代码在虚拟机的解释下得以执行。　　 3：不同于Java虚拟机运行java字节码，Dalvik虚拟机运行的是其专有的文件格式Dex 　　 4:dex文件格式可以减少整体文件尺寸，提高I/o操作的类查找速度。　　 5:odex是为了在运行过程中进一步提高性能，对dex文件的进一步优化。　　 6：所有的Android应用的线程都对应一个Linux线程，虚拟机因而可以更多的依赖操作系统的线程调度和管理机制　　 7：有一个特殊的虚拟机进程Zygote，他是虚拟机实例的孵化器。它在系统启动的时候就会产生

Load DEX file dynamically on Android 5.0

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问题 Prior to Android 5.0 I was able to load DEX files dynamically using DexClassLoader and calling loadClass() method but with the latest Android version I get a ClassNotFoundException . Here is what I am doing: Generate DEX file. ../android-sdk/android-sdk-linux_86/build-tools/21.1.1/dx --dex --output=bin/output.dex bin/output.jar Create a DexClassLoader. DexClassLoader cl = new DexClassLoader( dexFile.getAbsolutePath(), odexFile.getAbsolutePath(), null, mContext.getClassLoader()); Call cl

What is dex in Gradle

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问题 What is the dex in Gradle or in Android? In Gradle, what's the meaning of dexoptions ? Sometimes my project does not compile because of some dexerrors. I need to activate ProGuard to compile my Android app. 回答1: In the standard java world: When you compile standard java code : the compiler produce *.class file. A *class file contains standard java bytecode that can be executed on a standard JVM. In the Android world: It is different. You use the java language to write your code, but the