Android自定义Dialog显示GridView

package com.redcome.test; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import android.app.Dialog; import android.content.Context; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.GridView; import android.widget.SimpleAdapter; import android.widget.Toast; public class PriorityDlg extends Dialog { private Context context; private GridView dlg_grid = null; private String str; private int position; public PriorityDlg(Context context) { super(context); this.context = context; // TODO Auto-generated constructor stub } public PriorityDlg(Context context, int theme, String str) { super(context, theme); this.context = context; this.str = str; } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); // 设置对话框使用的布局文件 this.setContentView(R.layout.gridlayout); dlg_grid = (GridView) findViewById(R.id.gridview); // 设置GridView的数据源 SimpleAdapter adapter = new SimpleAdapter(context,//当前View getPriorityList(str), //数据源 R.layout.grid_item,//item的布局文件 new String[] { "list_value" }, new int[] { R.id.itemText });//布局文件里面对应的view的id dlg_grid.setAdapter(adapter); // 为GridView设置监听器 dlg_grid.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub Toast.makeText(context, "" + arg2, Toast.LENGTH_SHORT).show();// 显示信息; position = arg2; //点击item后Dialog消失 PriorityDlg.this.dismiss(); } }); } //返回点击的位置 public int getPosition() { return position; } //得到数据，这是要显示在GridView上的数据 private List<HashMap<String, Object>> getPriorityList(String str) { List<HashMap<String, Object>> priorityList = new ArrayList<HashMap<String, Object>>(); for (int i = 0; i < 4; i++) { HashMap<String, Object> a = new HashMap<String, Object>(); a.put("list_value", str); priorityList.add(a); } return priorityList; } }