android listview的应用

android listview的使用

/** *  *  *  * @author fansxnet  *  *  * @deprecated pojo *  *  */public class Item {private int i;private Drawable imge;public int getI() {return i;}public void setI(int i) {this.i = i;}public Drawable getImge() {return imge;}public void setImge(Drawable imge) {this.imge = imge;}}

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import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class ListViewTestActivity extends Activity {private ListView listview;private List<Item> itemlist;private Context context;private ListViewAdapter listadapter;private Button button;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);itemlist = new ArrayList<Item>();this.context = this;button = (Button)findViewById(R.id.button);button.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v) {itemlist = getData();listadapter.addItem(itemlist);//listadapter.notifyDataSetChanged();}});listview = (ListView) findViewById(R.id.listView);listview.setOnItemClickListener(new ListItemOnClickListener());listadapter = new ListViewAdapter(context);listview.setAdapter(listadapter);}private List<Item> getData(){List<Item> templist = new ArrayList<Item>();for(int i = 0;i<10;i++){Item item = new Item();item.setI(i);item.setImge(getResources().getDrawable(R.drawable.ic_launcher));templist.add(item);}return templist;}class ListViewAdapter extends BaseAdapter {private List<Item> itemlist;private Context mContext;public ListViewAdapter(Context context) {this.itemlist = new ArrayList<Item>();this.mContext = context;}public void addItem(List<Item> addlist){itemlist.addAll(addlist);notifyDataSetChanged();}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn itemlist.size() + 1;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubif (position == this.getCount() - 1) {return null;} else {return itemlist.get(position);}}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubif (position != this.getCount() - 1) {return position;} else {return -1;}}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubItem item = new Item();if(position != this.getCount()-1){item = itemlist.get(position);}if(position == this.getCount()-1){LayoutInflater flater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);convertView = flater.inflate(R.layout.morestatus, null);return convertView;}convertView = LayoutInflater.from(mContext).inflate(R.layout.listviewitem, null);ImageView imageview = (ImageView)convertView.findViewById(R.id.imageView);TextView textview = (TextView)convertView.findViewById(R.id.textView);imageview.setImageDrawable(item.getImge());textview.setText(String.valueOf(item.getI()));return convertView;}}class ListItemOnClickListener implements OnItemClickListener{@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {long id = arg0.getItemIdAtPosition(arg2);if(id == -1){itemlist = getData();listadapter.addItem(itemlist);listadapter.notifyDataSetChanged();}else{Toast.makeText(context, String.valueOf(id), 5000).show();}}}}