由于ndk引发的几个bug，以及解决方法

问题一：

Error:(12, 0) Error: NDK integration is deprecated in the current plugin.  

Consider trying the new experimental plugin.  

For details, see http://tools.android.com/tech-docs/new-build-system/gradle-experimental.  

Set "android.useDeprecatedNdk=true" in gradle.properties to continue using the current NDK integration.



其实，最重要的一句话就是最后一句，我们在工程根目录的gradle.properties文件中添加android.useDeprecatedNdk=true就可以解决这个问题了



问题二：
Error:Execution failed for task ':rtspCamera:compileDebugNdk'.

> NDK not configured.

Download the NDK from http://developer.android.com/tools/sdk/ndk/.Then add ndk.dir=path/to/ndk in local.properties.(On Windows, make sure you escape backslashes, e.g. C:\\ndk rather than C:\ndk)



解决方法：
在工程根目录的local.properties文件中添加上你的ndk的路径就可以了，要按着格式转意



问题三：
Error:Execution failed for task ':app:compileDebugNdk'.

> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException:
Process 'command 'D:\android-ndk-r9d\ndk-build.cmd'' finished with non-zero exit value
2



解决方法：
应该是当前ndk的问题，我从r9d换成了r10e解决了问题