Java 自定义AlertDialog未在runonuithread方法中显示

这是密码…请告诉我哪里出错了。。另外，我正在为listview设置一个适配器，它包含在视图v1中…这都是在smartfox服务器的扩展响应中完成的…然后在UI线程上执行以下过程

 runOnUiThread(new Runnable() {

                            @Override
                            public void run() {
                                // TODO Auto-generated method stub
                                alert();
                            }

                        });


public void alert(){

            AlertDialog.Builder ab=new AlertDialog.Builder(RegActivity.this);
            LayoutInflater linf=(LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
            View v1=linf.inflate(R.layout.proj_list, null);
            ab.setView(v1);
            ab.setTitle("Select a group");
            ListView lvprojlist=(ListView) findViewById(R.id.projdisplaylist);
            adplist=new ArrayAdapter<String>(RegActivity.this, R.layout.list_item, R.id.rowtext, projlist);
            lvprojlist.setAdapter(adplist);


            ab.setCancelable(false).setPositiveButton("Confirm", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    dialog.dismiss();


                }
            })
            .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    dialog.dismiss();
                }
            });
            ab.create();
            ab.show();
                 }

---

你必须先按相反的顺序改变它

 ab.setTitle("Select a group");
 ListView lvprojlist=(ListView) v1.findViewById(R.id.projdisplaylist);
 ab.setView(v1);

您必须在查找列表视图的id后设置视图

也不要使adplist全局变量。让它静止

ArrayAdapter<String >adplist=new ArrayAdapter<String>(RegActivity.this, R.layout.list_item, R.id.rowtext, projlist);

ArrayAdapteradplist=新的ArrayAdapter（RegActivity.this，R.layout.list_项，R.id.rowtext，projlist）；

它的lvprojlist.setAdapter（adplist）；

ArrayAdapter<String >adplist=new ArrayAdapter<String>(RegActivity.this, R.layout.list_item, R.id.rowtext, projlist);