android中cardview内有三个点的小部件的名称是什么？ [英] What's the name of the little widget with three dots inside a cardview in android?

问题描述

三点小小工具是什么？如何将它添加到我的应用程序？

解决方案

这不是一个小部件。它是一个 ImageButton （使用包含一个 PopupMenu

$ b $的溢出图标b

有关文档教程访问，请访问 http：// developer .android.com / guide / topics / ui / menus.html＃PopupMenu

这指的是上面链接的一个漂亮的代码片段：

 < ImageButton 
 android：layout_width =wrap_content
 android：layout_height =wrap_content
 android：src =@ drawable / ic_overflow_holo_dark
 android：contentDescription =@ string / descr_overflow_button
 android：onClick =showPopup/> 
  

然后用来显示弹出窗口：

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

Roman Roman Nurik将这个非常棒的工具组合在一起，以获得您想要的任何Material Design图标：

http://romannurik.github.io/ AndroidAssetStudio /

以及图片可在：

http://romannurik.github.io/AndroidAssetStudio/icons-actionbar.html#source.type=clipart& ; source.clipart = more_vert&安培; source.space.trim = 0&安培; source.space.pad = 0&安培;名称= ic_action_more_vert&安培;主题=光&安培;颜色= RGBA（33％2C％20150％2C％20243％2C％200.6）

What's the little widget with three dots? How can I add it to my app?

解决方案

This is not a widget at all. It is an ImageButton (borderless in style) using the overflow Icon that includes a PopupMenu

For documentation tutorial visits http://developer.android.com/guide/topics/ui/menus.html#PopupMenu

This refers to a nice code snippet from the link above:

  <ImageButton
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/ic_overflow_holo_dark"
       android:contentDescription="@string/descr_overflow_button"
       android:onClick="showPopup" />

Then use to show popup:

 public void showPopup(View v) {
     PopupMenu popup = new PopupMenu(this, v);
     MenuInflater inflater = popup.getMenuInflater();
     inflater.inflate(R.menu.actions, popup.getMenu());
     popup.show();
 }

And Roman Nurik put together this awesome tool to get any Material Design icon you want:

http://romannurik.github.io/AndroidAssetStudio/

and the image is available at:

http://romannurik.github.io/AndroidAssetStudio/icons-actionbar.html#source.type=clipart&source.clipart=more_vert&source.space.trim=0&source.space.pad=0&name=ic_action_more_vert&theme=light&color=rgba(33%2C%20150%2C%20243%2C%200.6)

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