相关疑难解决方法(0)

如何使用锚定到按钮的自定义下拉菜单/弹出菜单？

我需要它像弹出菜单(锚定到视图)一样工作,并在我单击菜单中的项目时执行某些操作.

如何通过代码向菜单添加项目,保持菜单的高度,如果有超过5个项目,可以滚动它.我不需要添加任何图像,只需添加文本.

second_fragment.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/f2_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/f2_textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/f2_tv" />

<Button
    android:id="@+id/f2_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="button"
    android:text="@string/f2_bttn" />

SecondFragment.java

   public class SecondFragment extends Fragment {

    FragmentInterface iface;

    public interface FragmentInterface {
        public void buttonPressed();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        return inflater.inflate(R.layout.second_fragment, container, false);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        // This makes sure that the container activity has implemented
        // the callback interface. If not, it throws an …