LunchList.java

package apt.tutorial;

import android.app.TabActivity;
import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;
import android.widget.AdapterView;
import android.widget.CursorAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RadioGroup;
import android.widget.TabHost;
import android.widget.TextView;

public class LunchList extends TabActivity {
	Cursor model=null;
	RestaurantAdapter adapter=null;
	EditText name=null;
	EditText address=null;
	EditText notes=null;
	RadioGroup types=null;
	RestaurantHelper helper=null;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		
		helper=new RestaurantHelper(this);
		
		name=(EditText)findViewById(R.id.name);
		address=(EditText)findViewById(R.id.addr);
		notes=(EditText)findViewById(R.id.notes);
		types=(RadioGroup)findViewById(R.id.types);
		
		Button save=(Button)findViewById(R.id.save);
		
		save.setOnClickListener(onSave);
		
		ListView list=(ListView)findViewById(R.id.restaurants);
		
		model=helper.getAll();
		startManagingCursor(model);
		adapter=new RestaurantAdapter(model);
		list.setAdapter(adapter);
		
		TabHost.TabSpec spec=getTabHost().newTabSpec("tag1");
		
		spec.setContent(R.id.restaurants);
		spec.setIndicator("List", getResources()
																.getDrawable(R.drawable.list));
		getTabHost().addTab(spec);
		
		spec=getTabHost().newTabSpec("tag2");
		spec.setContent(R.id.details);
		spec.setIndicator("Details", getResources()
																	.getDrawable(R.drawable.restaurant));
		getTabHost().addTab(spec);
		
		getTabHost().setCurrentTab(0);
		
		list.setOnItemClickListener(onListClick);
	}
	
	@Override
	public void onDestroy() {
		super.onDestroy();
		
		helper.close();
	}
	
	private View.OnClickListener onSave=new View.OnClickListener() {
		public void onClick(View v) {
			String type=null;
			
			switch (types.getCheckedRadioButtonId()) {
				case R.id.sit_down:
					type="sit_down";
					break;
				case R.id.take_out:
					type="take_out";
					break;
				case R.id.delivery:
					type="delivery";
					break;
			}
			
			helper.insert(name.getText().toString(),
										address.getText().toString(), type,
										notes.getText().toString());
			model.requery();
		}
	};
	
	private AdapterView.OnItemClickListener onListClick=new AdapterView.OnItemClickListener() {
		public void onItemClick(AdapterView<?> parent,
															View view, int position,
															long id) {
			model.moveToPosition(position);
			name.setText(helper.getName(model));
			address.setText(helper.getAddress(model));
			notes.setText(helper.getNotes(model));
			
			if (helper.getType(model).equals("sit_down")) {
				types.check(R.id.sit_down);
			}
			else if (helper.getType(model).equals("take_out")) {
				types.check(R.id.take_out);
			}
			else {
				types.check(R.id.delivery);
			}
			
			getTabHost().setCurrentTab(1);
		}
	};
	
	class RestaurantAdapter extends CursorAdapter {
		RestaurantAdapter(Cursor c) {
			super(LunchList.this, c);
		}
		
		@Override
		public void bindView(View row, Context ctxt,
												 Cursor c) {
			RestaurantHolder holder=(RestaurantHolder)row.getTag();
			
			holder.populateFrom(c, helper);
		}
		
		@Override
		public View newView(Context ctxt, Cursor c,
												 ViewGroup parent) {
			LayoutInflater inflater=getLayoutInflater();
			View row=inflater.inflate(R.layout.row, parent, false);
			RestaurantHolder holder=new RestaurantHolder(row);
			
			row.setTag(holder);
			
			return(row);
		}
	}
	
	static class RestaurantHolder {
		private TextView name=null;
		private TextView address=null;
		private ImageView icon=null;
		private View row=null;
		
		RestaurantHolder(View row) {
			this.row=row;
			
			name=(TextView)row.findViewById(R.id.title);
			address=(TextView)row.findViewById(R.id.address);
			icon=(ImageView)row.findViewById(R.id.icon);
		}
		
		void populateFrom(Cursor c, RestaurantHelper helper) {
			name.setText(helper.getName(c));
			address.setText(helper.getAddress(c));
	
			if (helper.getType(c).equals("sit_down")) {
				icon.setImageResource(R.drawable.ball_red);
			}
			else if (helper.getType(c).equals("take_out")) {
				icon.setImageResource(R.drawable.ball_yellow);
			}
			else {
				icon.setImageResource(R.drawable.ball_green);
			}
		}
	}
}