NoClassDefFoundException

Question

I am using fragments in Android.I got an NoClassDefFoundException while clicking the button. The code given below.

MainActivity.class

public void onClick(View view) {
    // TODO Auto-generated method stub
    if(view.equals(btnLogin)){
        Intent logd=new Intent(getApplicationContext(), Home.class);
        startActivity(logd);
    }

Home.class

package com.nv.netpos;
import java.util.Stack;
import android.app.Fragment;
import android.os.Bundle;
import android.support.v4.app.FragmentTabHost;
public class Home extends SherlockFragmentActivity {
    private FragmentTabHost tabHost;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);
        tabHost=(FragmentTabHost)findViewById(android.R.id.tabhost);
        tabHost.setup(getApplicationContext(), getSupportFragmentManager());
tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("HOME"),
             Fragment2.class, null);
tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("ITEMS"),
                Fragment2.class, null);
}}

Besides passing `getApplicationContext()` pass `getActivity()`. @jithin — GrIsHu, Nov 21 '13 at 11:16
possible duplicate of [Android Unable to instantiate activity: Didn't find class on path](http://stackoverflow.com/questions/17273218/android-unable-to-instantiate-activity-didnt-find-class-on-path) — gunar, Nov 21 '13 at 11:42

score 1 · Answer 1 · edited May 23 '17 at 12:12

1

Your problem is probably that you didnt declare Home activity in your AndroidManifest.xml.

See AndroidManifest documentation or this topic to learn how to declare activity in manifest.

Note: as @GrIsHu pointed out in comments, dont use getApplicationContext(), use getApplication() when passing context parameter.

edited May 23 '17 at 12:12

Community

1
1

answered Nov 21 '13 at 11:17

hendrix

3,364
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score 0 · Accepted Answer · answered Nov 21 '13 at 11:19

Try this:

Go to Project/Properties/Java Build Path/Order and Export -- Make sure there's a check in front of Android Dependencies and the support library, if you use it.Mark all checkboxes.Click on Apply and clean the project.

This worked for me.Hope this helps.

NoClassDefFoundException

2 Answers2