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Adding Support Libraries To Android Project

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Why am I having such a hard time getting into the swing of Android development? I've been developing in various languages over the years and, for some reason, just can't seem to ge

Solution 1:

OK, I guess I should post an answer as I've eventually managed to solve my own problem.

It turns out I have to use a build target of Android 4.2.2, regardless of the fact that I'm specifically developing for Android 2.3.3 - I mean, that's why I'm using support libraries after all. I imagine it might be possible that some other lower target (but higher than 2.3.3) would still work I just used the highest one I have installed and it solved the problem.

How I was supposed to know this from following the step-by-step instructions on the Android Developers website is a mystery to me. The reason I decided to try changing the targetSdkVersion was because of the final section in the page referenced in the question. It reads "If you are increasing the backward compatibility of your existing application to an earlier version of the Android API with the Support Library, make sure to update your application's manifest." Now I'm not increasing the backward compatibility of my existing application. I'm changing an existing application that targets 2.3.3 to be able to include an Action Bar (seems more like "forward compatibility"). I tried upgrading the targekSdkVersion though as I was out of ideas and lo and behold, it worked.

Solution 2:

Don't know if it helps you at all, but I've been struggling with a similar issue for several hours and finally managed to resolve it. In my case, inside my own project's styles.xml file, I was referencing the AppCompat style in the wrong way in the parent attribute.

I was using:

<stylename="AppBaseTheme"parent="android:Theme.AppCompat">

where I should have used:

<stylename="AppBaseTheme"parent="@style/Theme.AppCompat">

My mistake was in the reference to the theme.

Solution 3:

I found that setting the Android target to 2.3.3 for the library project android-support-v7-appcompat solves this issue. You don't need to set your project's target higher, but the library's target lower.

Solution 4:

You have pinpointed the all important document and the relevant section "adding libraries with resources":

http://developer.android.com/tools/support-library/setup.html

The error suggests that your project is not able to find these resources. Please double check the following :

  1. You have checked "is library" on the library project

  2. You have exported the jars IN THE LIBRARY PROJECT as described in that section

  3. You have added the library project as a reference to your app project

  4. You have added the android-support-v4.jar to your libs folder in your app project

If this is all definitely correct, check eclipse for any error messages - is it the library project or the app project that lights up like the proverbial Christmas Tree ?

Solution 5:

First of all check if you have done all the described steps as explained on the developers site. Then, for the errors :

Unable to resolve target 'android-16'

Make sure that you have installed API16, this errors occurs if you have mentioned your targetsdk to 16 in your Manifest while the sdk for API16 is not installed. You can either install the API or edit the targetApi of your project to the minimum required version, for the support library you are using I think API 11 is the minimum required android version.

android:Widget.Holo.ActionBar

This error should also be fixed once the targetsdk is fixed in your project. Since to use Holo.ActionBar you'l need to target your project to minimum supported api level ie. 11 or higher.

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