Changing from listview to listview

Question

I want my categories listview to change to my vechicles listview when i click on the vechicles item in the categories list. I am new to android development any help would be appreciated

public class CategoryFragment extends Fragment implements OnItemClickListener {

public CategoryFragment() {
    // Required empty public constructor

}


View mView; // used to get access to findViewById function
private ListView CategoriesList; //Contains List Layout
private String[] CategoriesString; //Contains String Array

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    mView = inflater.inflate(R.layout.fragment_category, container, false);


    CategoriesList = (ListView) mView.findViewById(R.id.CategoriesListView);

    CategoriesString = getResources().getStringArray(R.array.CategoriesData);

    ArrayAdapter<String> objAdapter = new ArrayAdapter<String>(this.getActivity(),android.R.layout.simple_list_item_1,CategoriesString);

    CategoriesList.setOnItemClickListener(this);
    CategoriesList.setAdapter(objAdapter);

    return mView;
}

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
    // TODO Auto-generated method stub

    if(arg2 == 1)
    {
        //Toast.makeText(this.getActivity(), "hello", Toast.LENGTH_SHORT).show();
        Intent intent1 = new Intent(getActivity(),Categories_vehicles.class);
        startActivity(intent1);
    }
}

}

This is my list containing vehicles

public class Categories_vehicles extends Fragment {

View mView; // used to get access to findViewById function
private ListView VehiclesList; //Contains List Layout
private String[] VehiclesString; //Contains String Array

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    mView = inflater.inflate(R.layout.categories_vehicles, container, false);


    VehiclesList = (ListView) mView.findViewById(R.id.Vehicles_List);

    VehiclesString = getResources().getStringArray(R.array.VehiclesData);

    ArrayAdapter<String> objAdapter = new ArrayAdapter<String>(this.getActivity(),android.R.layout.simple_list_item_1,VehiclesString);
    VehiclesList.setAdapter(objAdapter);


    return mView;
}



}

This is the updated logcat

06-14 12:00:45.513: E/AndroidRuntime(2145): FATAL EXCEPTION: main 06-14 12:00:45.513: E/AndroidRuntime(2145): Process: com.genie_alpha, PID: 2145 06-14 12:00:45.513: E/AndroidRuntime(2145): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.genie_alpha/com.genie_alpha.Categories_vehicles}: java.lang.ClassCastException: com.genie_alpha.Categories_vehicles cannot be cast to android.app.Activity 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121) 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.app.ActivityThread.access$800(ActivityThread.java:135) 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.os.Handler.dispatchMessage(Handler.java:102) 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.os.Looper.loop(Looper.java:136) 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.app.ActivityThread.main(ActivityThread.java:5017) 06-14 12:00:45.513: E/AndroidRuntime(2145): at java.lang.reflect.Method.invokeNative(Native Method) 06-14 12:00:45.513: E/AndroidRuntime(2145): at java.lang.reflect.Method.invoke(Method.java:515) 06-14 12:00:45.513: E/AndroidRuntime(2145): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 06-14 12:00:45.513: E/AndroidRuntime(2145): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 06-14 12:00:45.513: E/AndroidRuntime(2145): at dalvik.system.NativeStart.main(Native Method) 06-14 12:00:45.513: E/AndroidRuntime(2145): Caused by: java.lang.ClassCastException: com.genie_alpha.Categories_vehicles cannot be cast to android.app.Activity 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.app.Instrumentation.newActivity(Instrumentation.java:1061) 06-14 12:00:45.513: E/AndroidRuntime(2145): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112) 06-14 12:00:45.513: E/AndroidRuntime(2145): ... 11 more

Can you include exception (logcat) information? May help for finding the problem cause. — Wakim, Jun 14 '14 at 15:20
add com.genie_alpha.Categories_vehicles to android manifest, but ALSO the naming convention in Java and specifically on Android would be 'CategoryVehiclesActivity'. — EpicPandaForce, Jun 14 '14 at 15:55
i added it to the manifest but now i get another error so i updated the logcat — Reshaud Ally, Jun 14 '14 at 16:10

score 0 · Accepted Answer · answered Jun 14 '14 at 15:42

0

Your logcat has the answer

06-14 11:28:24.753: E/AndroidRuntime(2015): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.genie_alpha/com.genie_alpha.Categories_vehicles}; have you declared this activity in your AndroidManifest.xml?

You need to declare the missing activity in your AndroidManifest.xml file

answered Jun 14 '14 at 15:42

SalGad

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can you explain how do i add this properly as i said above i am new at android programming – Reshaud Ally Jun 14 '14 at 15:45
as i got most of my code my doing tutorials on youtube and such lol – Reshaud Ally Jun 14 '14 at 15:46
this will help - http://stackoverflow.com/questions/3832619/add-a-new-activity-to-the-androidmanifest – SalGad Jun 14 '14 at 15:46
also, if it helps, please mark this as the right answer by clicking the check mark next to the answer – SalGad Jun 14 '14 at 15:52
I added it and got a new error will post the new logcat now – Reshaud Ally Jun 14 '14 at 16:02

Changing from listview to listview

1 Answers1