Android Studio 在命令行编译工程

时间：2022-03-24 15:26:03

在Android  sdk 目录下的samples/android-21/ 文件夹下，任找一个工程，如果在命令行直接编译 

可能会报这种错误：

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)

如果是这样，首先回到工程目录下，运行 

./gradlew  
./gradlew  build

然后再执行进行编译 
gradle build 
gradle tasks //查看android gradle的所有任务
 gradle compileReleaseSource  //生成debug apk ，在build/outpus/apk 文件夹下


如果出现

 What went wrong:

A problem occurred evaluating project ':****'.

> SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable.


解决：如描述，gradle找不到android sdk的目录，那就export就可以了,即在.bashrc 或者/etc/environment 文件里添加        ANDROID_HOME=/Applications/Android\ Studio.app/sdk        export ANDROID_HOME

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

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