定义AlertDialog子类

public class AddStockFormDialog extends AlertDialog {

public AddStockFormDialog(Context context) {
super(context);
setTitle("dsfaa");
setView(getLayoutInflater().inflate(R.layout.add_stock_form, null));

//添加button，第一个参数为button类型，可以是确认或取消键
        setButton(BUTTON_POSITIVE, "dsfasf", new OnClickListener() {

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

}
});
// TODO Auto-generated constructor stub
}

}