Android Studio 在命令列編譯工程，androidstudio

Android Studio 在命令列編譯工程，androidstudio

在Android  sdk 目錄下的samples/android-21/ 檔案夾下，任找一個工程，如果在命令列直接編譯 

可能會報這種錯誤：

gradle buile.gradle

FAILURE: Build failed with an exception.    * What went wrong:  Task 'build.gradle' not found in root project 'BorderlessButtons'.    * Try:  Run gradle tasks to get a list of available tasks. Run with --info or --debug option to get more log output.    * Exception is:  org.gradle.execution.TaskSelectionException: Task 'build.gradle' not found in root project 'BorderlessButtons'.      at org.gradle.execution.TaskSelector.getSelection(TaskSelector.java:101)      at org.gradle.execution.TaskSelector.getSelection(TaskSelector.java:76)      at org.gradle.execution.commandline.CommandLineTaskParser.parseTasks(CommandLineTaskParser.java:42)      at org.gradle.execution.TaskNameResolvingBuildConfigurationAction.configure(TaskNameResolvingBuildConfigurationAction.java:44)  

如果是這樣，首先回到工程目錄下，運行

./gradlew  ./gradlew  build

然後再執行進行編譯

gradle build gradle tasks //查看android gradle的所有任務 gradle compileReleaseSource  //產生debug apk ，在build/outpus/apk 檔案夾下

參考http://stackoverflow.com/questions/14093024/trying-gradle-build-task-build-not-found-in-root-project/14093100