android 中PopupMenu 的簡單使用

1、點擊某個按鈕時彈出一個下拉列表

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.btn1:
            PopupMenu pop = new PopupMenu(getActivity(), v);
            pop.getMenuInflater().inflate(R.menu.main, pop.getMenu());
            pop.show();
            break;
        case R.id.btn2:
            PopupMenu pop1 = new PopupMenu(getActivity(), v);
            pop1.getMenuInflater().inflate(R.menu.main, pop1.getMenu());
            pop1.show();
            break;
        default:
            break;
        }
    }