Revisiting Android and support libraries (support-v4 and appcompat-v7)
I have previously written on this subject, but now I am using IntelliJ IDEA 13 with the latest Android SDK of this writing (September 2014) and when you create a project you might be greeted by an error message like the following:
Error:Gradle: A problem occurred configuring project ':projectname'.
> Could not resolve all dependencies for configuration ':projectname:_debugCompile'.
> Could not find any version that matches com.android.support:support-v4:0.0.+.
> Could not find any version that matches com.android.support:appcompat-v7:19.+.
The Android SDK has switched over to Gradle since I last wrote about it. In this case the default setup already searches the local
libs directory under
Projectname/projectname for any jars to compile with the build of the application. But if you would follow the instructions from my previous post the chance is high that you keep running into this problem. Aside from the installation of the
Android Support Library, you will also need to install the
Android Support Repository in order to make dependency resolution work. Do verify that your
Projectname/local.properties contains a set property for
sdk.dir that points to the root of your locally installed Android SDK.
Now, you might still run into problems. The thing is that in your
Projectname/projectname/build.gradle you generally want to have the compile lines for
appcompat-v7 match the version of your
targetSdkVersion. So this might become:
compile fileTree(dir: 'libs', include: ['*.jar'])
These numbers can be found in the SDK under
extras/android/m2repository/com/android/support under the respective entries for
support-v4. If you would use
+ for the version identifier, you run the chance of picking up the latest version, including release candidates and this might break your build. So in this case being explicit is better than depending on it implictly.
Syndicated 2014-09-07 15:09:58 from In Nomine - The Lotus Land