cannot be resolved errors

Question

Simply trying to change the text on the tabs for android app. Who knew it would be this much trouble. how to resolve 'cannot be resolved' & 'cannot be resolved or is not a field' errors for mTabHost, tabs_bg and tabsText

import android.app.Activity;
import android.content.Context;  
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.widget.TabHost;
import android.widget.TabHost.TabContentFactory;
import android.widget.TabHost.TabSpec;
import android.widget.TextView;

public class Tabs extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.tabs);
    mTabHost = (TabHost) findViewById(android.R.id.tabhost);
    setupTab(new TextView(this), "List");
    setupTab(new TextView(this), "Map");
}

private void setupTab(final View view, final String tag) {
    View tabview = createTabViewe(mTabHost.getContext(), tag);
    TabSpec setContent = mTabHost.newTabSpec(tag).setIndicator(tabview).setContent(new TabContentFactory() {
        public View createTabContent(String tag) {return view;}
    });
    mTabHost.addTab(setContent);
}

private static View createTabView(final Context context, final String text) {
    View view = LayoutInflater.from(context).inflate(R.layout.tabs_bg, null);
    TextView tv = (TextView) view.findViewById(R.id.tabsText);
    tv.setText(text);
    return view;
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.tabs, menu);
    return true;
}

}

Answer 1

You need to declare mTabHost

TabHost mTabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {

tabs_bg is a layout. Do you have tabs_bg.xml in your layout folder. Also you need to check if you have a textview with id tabsText in tabs_bg.xml