问题
I just downloaded Android Developer Tools (ADT), which includes Eclipse, etc., and I followed Android's guide to create MyFirstApp. I've just spend over an hour looking for
android-support-v7-app.jar
but was unable to. Do you have any suggestions on how to handle the fact that for a blank template, android.support.v7.app.ActionBarActivity not resolve.
回答1:
Make sure you've downloaded the package android.support.v7. Then, Import the whole appcompat lib (/extras/android/support/v7/appcompat) as a library project to your workspace and then add to your main project as a library:
Here are the steps.
First check if android-support-v7-appcompat is already in your workspace. If it is go to Step 2
Step 1:
Select File > Import.
Select Existing Android Code Into Workspace and click Next.
Browse to the SDK installation directory and then to the Support Library folder. /extras/android/support/v7/appcompat/.
Click Finish to import the project. For the v7 appcompat project, you should now see a new project titled android-support-v7-appcompat.
Step 2:
Right-click on your project -> Properties In Android->Library section click Add Select android-support-v7-appcompat -> Ok
回答2:
The use of ActionBarActivity now is deprecated, use
import android.support.v7.app.AppCompatActivity
your class now must extends AppCompatActivity
public myClass extends AppCompatActivity{
...
...
if you have the message:
cannot resolve symbol AppCompatActivity
You have to update to the last support library in your Android SDK Manager
来源：https://stackoverflow.com/questions/23781675/android-support-v7-app-actionbaractivity-not-resolve