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：/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:transformClassesWithDexForArm7DebugRunning 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 /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:assembleArm7DebugBUILD SUCCESSFULTotal time: 17.095 secs
