目前我已经有默认宽度溢出菜单:
Currently I have an overflow menu which has default width:
我要的是:
我试图改变的主题是这样的:
I have tried changing the theme this way:
<style name="MyWorkspaceDetailTheme" parent="@android:style/Theme.Holo.Light.DarkActionBar">
<item name="android:popupMenuStyle">@style/MyPopupMenu</item>
</style>
<style name="MyPopupMenu" parent="@android:style/Widget.Holo.ListPopupWindow">
<item name="android:dropDownWidth">30dp</item>
</style>
但没有得到任何的成功。请谁能帮助。
but didn't got any success. Please can anyone help.
我follwing这个[的 http://keepsafe.github.io/2014/11/19/building-a-custom-overflow-menu.html] 教程,但它并没有提及方法来改变宽度
I was follwing this[http://keepsafe.github.io/2014/11/19/building-a-custom-overflow-menu.html] tutorial but it did not mention way to change width
所以我也希望同样的答案,并一直在寻找的同时,对所有的#1的问题是没有答案。最后,我不得不挖developer.google.com找出一种方式。
So i was also looking same answer and been searching for while, All the questions on Stackoverflow was unanswered. Finally i had to dig the developer.google.com to find out a way.
http://developer.android.com/reference/android/widget/ ListPopupWindow.html
你会找到一个方法setContentWidth(int width)将它实际上做我们的工作。
you will find a method setContentWidth(int width) which actually does our work.
下面就是答案
//.......... Something on top
popupMenu.show();
// Try to force some horizontal offset
try {
Field fListPopup = menuHelper.getClass().getDeclaredField("mPopup");
fListPopup.setAccessible(true);
Object listPopup = fListPopup.get(menuHelper);
argTypes = new Class[] { int.class };
Class listPopupClass = listPopup.getClass();
// Get the width of the popup window
int width = (Integer) listPopupClass.getDeclaredMethod("getWidth").invoke(listPopup);
// Invoke setHorizontalOffset() with the negative width to move left by that distance
listPopupClass.getDeclaredMethod("setHorizontalOffset", argTypes).invoke(listPopup, -width);
/*********** THIS LINE DOSE OUR WORK and increases the width of OverFlow Menu ******/
listPopupClass.getDeclaredMethod("setContentWidth", argTypes).invoke(listPopup, width+200);
// Invoke show() to update the window's position
listPopupClass.getDeclaredMethod("show").invoke(listPopup);
} catch (Exception e) {
// Again, an exception here indicates a programming error rather than an exceptional condition
// at runtime
Log.w("Soemthing", "Unable to force offset", e);
}
要这个==>