Android ListView 长按弹出菜单详解

package com.Dean; import java.util.ArrayList; import android.app.ListActivity; import android.os.Bundle; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.View; import android.view.View.OnCreateContextMenuListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.BaseAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; public class ListViewActivity extends ListActivity implements OnItemClickListener,OnItemLongClickListener{ ViewAdapter va; int selectedIndex=0; ListViewActivity thisView; protected int titleIndex; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); va=new ViewAdapter(); AddDisplayData(); thisView=this; ListView lv=this.getListView(); lv.setAdapter(va); lv.setOnItemClickListener(this); lv.setOnItemLongClickListener(this); lv.setSelection(0); lv.setOnCreateContextMenuListener(new OnCreateContextMenuListener(){ @Override public void onCreateContextMenu(ContextMenu menu, View arg1,ContextMenuInfo arg2) { menu.setHeaderTitle(va.ListItemText.get(titleIndex)); menu.add(0, 0, 0, "test1"); menu.add(0, 1, 1, "test2"); menu.add(0, 2, 2, "test3"); menu.add(0, 3, 3, "test4"); } }); } void AddDisplayData() { va.AddDisplayData("/data/dd/shitouji"); va.AddDisplayData("/data/dd/JBIG"); va.AddDisplayData("/data/gr"); va.AddDisplayData("/data/jiefang"); va.AddDisplayData("/data/"); va.AddDisplayData("/data/testEMB"); va.AddDisplayData("/data/dd/sdji"); } private class ViewAdapter extends BaseAdapter { ArrayList<String> ListItemText=new ArrayList<String>(); public int getCount() { return ListItemText.size(); } public Object getItem(int position) { return ListItemText.get(position); } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { TextView t=new TextView(thisView); t.setText((String)ListItemText.get(position)); return t; } void AddDisplayData(String t) { ListItemText.add(t); } } public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) { Toast t=Toast.makeText(this, "This is onItemClick", Toast.LENGTH_LONG); t.show(); } @Override public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int position, long id) { titleIndex=position; return false;//此处需要注意，如果改成true，不会再次触发ListView的setOnCreateContextMenuListener事件 } }