android 对话框

LayoutInflater inflater=getLayoutInflater();
View layout=inflater.inflate(R.layout.set_device_dialog, (ViewGroup)findViewById(R.id.dialog));
etdevsite=(EditText) layout.findViewById(R.id.etdevsite);
etdevsite.setText(devset.getSpacetypnename());
etdevname=(EditText) layout.findViewById(R.id.etdevname);
etdevname.setText(devset.getDevtypename());


// new AlertDialog.Builder(this).setTitle("产品设置").setView(layout);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("产品设置").setView(layout);
    builder.setPositiveButton("确定",
    new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
devset.setSpacetypnename(etdevsite.getText().toString());
devset.setDevtypename(etdevname.getText().toString());

//异步进程更新界面
            Message msg=new Message();
               msg.what=0x129;
               msg.obj=dvadpter;
               handler.sendMessage(msg);
}
});
    builder.setNegativeButton("取消", null).show();