ActionBarActivity - NoClassDefFoundError exception

Question

Already seen: NoClassDefFoundError Android with ActionBarActivity and ActionBarActivity catch an error on Phone

I am trying to use ActionBarCompact in my project. I have linked android-support-v7 project as well as its jar in my project following and checking the steps from lots of sources, but still I am unable to deal with the problem.

When I built my project, there is no error, but there is exception at runtime. Don't know why class is not detected. Please tell me what is wrong. Thanks.

Code:

import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.widget.ArrayAdapter;

public class mainMenu extends ActionBarActivity implements ActionBar.OnNavigationListener {

    ActionBar actionbar;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.menutab);

        actionbar = getSupportActionBar();
        actionbar.setTitle("Menu");
        actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);

        ArrayAdapter<CharSequence> mSpinnerAdapter = ArrayAdapter.createFromResource(this,R.array.menu_items, R.id.simpleText);
        actionbar.setListNavigationCallbacks(mSpinnerAdapter, this);
    }

    @Override
    public boolean onNavigationItemSelected(int arg0, long arg1)//item pos, itemid
    {
        switch (arg0) {
        case 0:
            System.out.println("selected: " + arg0);
            break;
        case 1:
            System.out.println("selected: " + arg0);
            break;
        case 2:
            System.out.println("selected: " + arg0);
            break;
        case 3:
            System.out.println("selected: " + arg0);
            break;
        default:
            break;
        }
        return true;
    }
}

------------Project Structure and Build Path-----------------

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Logcat

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can you post the logcat? also you might have to change the order of build — Onur A., Sep 17 '13 at 11:35
I have android-support-v7-appcompat ticked off (in order and export). It's already included in private dependencies for me. — Szymon, Sep 17 '13 at 11:40
@Szymon but its not included in private dependencies in my project.. — NightFury, Sep 17 '13 at 11:41
Clean your project and re-run the app, it should fix it. BTW here the logcat is showing mainMenu is missing. Have you declared it in Manifest. — Umer Farooq, Sep 17 '13 at 11:43
@anum90 btw what is your package doing in gen folder. Remove it from there. This should solve your problem. — Umer Farooq, Sep 17 '13 at 11:49
@UmerFarooq I have already included it in manifest file. Moreover, strangely I am getting `[2013-09-17 16:59:57 - android-support-v7-appcompat] Could not find android-support-v7-appcompat.apk!` in console when I run app. — NightFury, Sep 17 '13 at 11:58
@UmerFarooq package was already present before. I didn't made it. It contains R.java and buildconfig — NightFury, Sep 17 '13 at 12:00
For me it's in both Android Dependencies and Private Libraries — Szymon, Sep 17 '13 at 12:02
@anum90 restart eclipse. Sometimes problems occur because of some conflicting libraries. — Umer Farooq, Sep 17 '13 at 12:17
Maybe this can help you: http://stackoverflow.com/questions/20925167/how-can-i-test-activity-based-on-actionbaractivity-from-android-support-v7-app — Teo Inke, Apr 17 '15 at 16:24

Umer Farooq · Accepted Answer · 2013-09-17T12:37:48.367

5

Try this:

Import support library as a project from "sdk/extras/android/support/v7/appcompat".
Reference library in your project (for Eclipse, "Properties - Android - Add").
Build projects (for Eclipse, "Projects - Build All"). Make sure, you have "android.support.v7.appcompat"in your main project gen folder.

If it still doesn't solve your problem, restart eclipse.

then clean and rebuild project

If the problem persists, remove the support library from you computer and redownload it and follow above mentioned steps.

edited Sep 17 '13 at 12:37

answered Sep 17 '13 at 12:20

Umer Farooq

7,356
7
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Ok. I will let u know soon. – NightFury Sep 17 '13 at 12:40

djunod · Answer 2 · 2014-04-12T04:52:23.457

0

Get the latest versions.

Caution: Be certain you import the ActionBar class (and related APIs) from the appropriate package:

If supporting API levels lower than 11: import android.support.v7.app.ActionBar and use getSupportActionBar()

If supporting only API level 11 and higher: import android.app.ActionBar and use getActionBar()

from Google ActionBar

edited Apr 12 '14 at 04:52

answered Apr 12 '14 at 04:43

djunod

4,876
2
34
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score 0 · Answer 3 · answered Jun 20 '14 at 08:51

I had not the same cause as yours, but it might help someone else.

In ADT base on eclipse, with each new Android project generate is new directory appcompat_v7. I delete duplicates directories (appcompat_7_2, etc..), because all of them using the same versions od SDK.

Then in project.properties path to android.library.reference.1 provide path to non-existing directory.

Solution:

Go to Project properties -> Android -> choose right appcompat_vX directory and delete previouse one.

ActionBarActivity - NoClassDefFoundError exception

3 Answers3

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