如何在android溢出按钮上更改弹出菜单的位置？

Question

我只想在Gmail应用中实现与弹出菜单相同的功能,并固定在右上角的溢出按钮上.为此,我使用与Android Android弹出菜单的谷歌教程相同的代码,但对于我显示弹出菜单在动作栏的边缘不在那之下.如果你在gmail溢出的pop菜单上注意到你看到popmenu发生在actionbar的边缘.

这是我用于弹出菜单的xml:

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/item1"
        android:title="lablab"/>
    <item
        android:id="@+id/item2"
        android:title="lablab"/>

</menu>

以下是我的活动:

public void showFontSetting(View view) {
    PopupMenu popup = new PopupMenu(this, view);
    MenuInflater inflater = popup.getMenuInflater();
    inflater.inflate(R.menu.menu, popup.getMenu());
    popup.show();

    popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

        @Override
        public boolean onMenuItemClick(MenuItem item) {
        // TODO Auto-generated method stub

            switch (item.getItemId()) {
                case R.id.item1:
                    Toast.makeText(Index.this,
                        "You Clicked : " + item.getTitle(),
                    Toast.LENGTH_SHORT).show();
                    break;
                case R.id.item2:
                    break;
            }
            return true;
        }
    });
}

Answer 1

要仅重叠,请使用以下方法:

PopupMenu popupMenu = new PopupMenu(getContext(), this, Gravity.NO_GRAVITY, R.attr.actionOverflowMenuStyle, 0);

要获得具有明亮背景和对偏移的详细控制的PopupMenu,请使用以下方法:

styles.xml

<style name="PopupMenuOverlapAnchor" parent="@style/Theme.AppCompat.Light">
   <item name="android:overlapAnchor">true</item>
   <item name="android:dropDownVerticalOffset">0dp</item>
   <item name="android:dropDownHorizontalOffset">0dp</item>
</style>

码:

ContextThemeWrapper contextThemeWrapper = new ContextThemeWrapper(getContext(), R.style.PopupMenuOverlapAnchor);
PopupMenu popupMenu = new PopupMenu(contextThemeWrapper, this);

不再起作用了: 这里有一个简单的方法来调整a的位置PopupMenu.它将菜单定位在其锚点视图(overflowButton)上,就像操作栏中的菜单一样:

    PopupMenu popupMenu = new PopupMenu(context, overflowMenuButton);
    popupMenu.inflate(R.menu.my_menu);

    // Fix vertical offset
    overflowMenuButton.setOnClickListener(new OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            popupMenu.show();
            if (popupMenu.getDragToOpenListener() instanceof ListPopupWindow.ForwardingListener)
            {
                ListPopupWindow.ForwardingListener listener = (ListPopupWindow.ForwardingListener) popupMenu.getDragToOpenListener();
                listener.getPopup().setVerticalOffset(-overflowMenuButton.getHeight());
                listener.getPopup().show();
            }
        }
    });

Answer 2

将以下代码段添加到您的活动中：

PopupWindow popupwindow_obj; // create object

popupwindow_obj=popupDisplay();  // initialize in onCreate()

popupwindow_obj.showAsDropDown(clickbtn,-40, 18); // where u want show on view click event

public PopupWindow popupDisplay() { // disply designing your popoup window
    final PopupWindow popupWindow = new PopupWindow(this); // inflet your layout or diynamic add view

    View view; 

    LayoutInflater inflater = (LayoutInflater)   getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

    view = inflater.inflate(R.layout.mylayout, null);

    Button item = (LinearLayout) view.findViewById(R.id.button1);

    popupWindow.setFocusable(true);
    popupWindow.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
    popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
    popupWindow.setContentView(view);

    return popupWindow;
}

在res/layout目录中创建XML 并将其命名mylayout.xml

<LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Window test" />
</LinearLayout>

Answer 3

在我的情况下,应用重力帮助

PopupMenu popup = new PopupMenu(this, v, Gravity.RIGHT);