问题：Execute failed: java.io.IOException: Cannot run program “/usr/local/android-sdk-linux/build-tools/23.0.2/aapt”: error=2, No such file or directory
原因：在64位Linux下打包成APK时缺少x86下C++语言库。 解决方案：参考：https://stackoverflow.com/questions/17474401/cannot-run-program-xx-sdk-tools-emulator-java-io-ioexception-error-2-no-s
sudo apt-get install libncurses5:i386 \ libstdc++6:i386 \ zlib1g:i386
最终完美解决
Executing tasks: [:app:assembleArm7Debug] Configuration on demand is an incubating feature. Incremental java compilation is an incubating feature. :app:preBuild UP-TO-DATE :app:preArm7DebugBuild UP-TO-DATE :app:checkArm7DebugManifest :app:prepareArm7DebugDependencies :app:compileArm7DebugAidl UP-TO-DATE :app:compileArm7DebugRenderscript UP-TO-DATE :app:generateArm7DebugBuildConfig UP-TO-DATE :app:generateArm7DebugResValues UP-TO-DATE :app:generateArm7DebugResources UP-TO-DATE :app:mergeArm7DebugResources :app:processArm7DebugManifest :app:processArm7DebugResources :app:generateArm7DebugSources :app:incrementalArm7DebugJavaCompilationSafeguard :app:compileArm7DebugJavaWithJavac :app:compileArm7DebugJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.). :app:generateJsonModelArm7Debug :app:externalNativeBuildArm7Debug :app:compileArm7DebugSources :app:mergeArm7DebugShaders :app:compileArm7DebugShaders :app:generateArm7DebugAssets :app:mergeArm7DebugAssets :app:transformClassesWithDexForArm7Debug Running dex as a separate process. To run dex in process, the Gradle daemon needs a larger heap. It currently has 1024 MB. For faster builds, increase the maximum heap size for the Gradle daemon to at least 1536 MB. To do this set org.gradle.jvmargs=-Xmx1536M in the project gradle.properties. For more information see https://docs.gradle.org/current/userguide/build_environment.html :app:mergeArm7DebugJniLibFolders :app:transformNative_libsWithMergeJniLibsForArm7Debug :app:transformNative_libsWithStripDebugSymbolForArm7Debug :app:processArm7DebugJavaRes UP-TO-DATE :app:transformResourcesWithMergeJavaResForArm7Debug :app:validateSigningArm7Debug :app:packageArm7Debug :app:assembleArm7Debug BUILD SUCCESSFUL Total time: 17.095 secs
