![]() ![]() In your application's project, when using an IDE (such asĮclipse). This is often due to inadvertently including a core library file Ill-advised or mistaken usage of a core class (java.* or javax.*) Here's a relevant blurb from the dx source ( dalvik/dx/src/com/android/dx/command/dexer/Main.java), that gets printed if you try to include a java.* or javax.* class in an application. So this option is used for core.jar, where all those classes are actually defined. Normally, dx will refuse to process any java.* or javax.* classes. This is a special purpose flag that is only used when building some of the framework JAR files ( core.jar, framework.jar, etc.). apk file contains all necessary data to run the Android application and can be deployed to an Android device via the ADB (Android device bridge) tool. The program AAPT ( Android Asset Packaging Tool) performs APK creation. To understand better, look at the Android build process: dex file and the resources of an Android project, e.g., the images and XML files, are packed into an. dex files are therefore much smaller in size than the corresponding class files. dex file contains only one reference of this String. dex file.įor example, if the same String is found in different class files, the. During this conversion process redundant information in the class files are optimized in the. All class files of the application are placed in this. The dx tool converts Java class files into a *.dex (Dalvik executable)* file. The Java source files are converted to Java class files by the Java compiler. The dx.jar file was original located under android-sdk/platforms/android-X/tools/lib/ before (especially in Android 3 and Android 4) and was moved to android-sdk/platform-tools/lib/ later. The dx tool converts Java class files into a *.dex ( Dalvik executable)* file. ![]()
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