【开源】ActionItemBadge

ActionItemBadge

• 项目地址： https://github.com/mikepenz/Android-ActionItemBadge

  介绍：

  一个方便你让你在actionbar上显示数字提示的库（这种效果称为badge ）。其实现原理是利用了menu菜单资源文件属性actionLayout

  运行效果：

 

使用说明：

按照正常方式创建一个menu.xml ，同事需要添加actionLayout，为了总是让这个菜单项显示出来，添加上showAsAction="always"。

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<item         android:id="@+id/item_samplebadge"         android:actionLayout="@layout/menu_badge"         android:showAsAction="always"         android:title="@string/sample_1"/>

activity中

重写onCreateOptionsMenu

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@Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);    //you can add some logic (hide it if the count == 0)        if (badgeCount > 0) {            ActionItemBadge.update(this, menu.findItem(R.id.item_samplebadge), Iconify.IconValue.fa_android, ActionItemBadge.BadgeStyle.DARKGREY, badgeCount);        } else {            ActionItemBadge.hide(menu.findItem(R.id.item_samplebadge));        }    //If you want to add your ActionItem programmatically you can do this too. You do the following:        new ActionItemBadge.Add().act(this).menu(menu).title(R.string.sample_2).itemDetails(0, SAMPLE2_ID, 1).showAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS).build(ActionItemBadge.BadgeStyle.BLUE_LARGE, 1);        return true;    }

如果你想在用户点击菜单项之后重新更新badge显示的数目，那么在onOptionsItemSelected中调用invalidateOptionsMenu方法：

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@Override   public boolean onOptionsItemSelected(MenuItem item) {       int id = item.getItemId();       if (id == R.id.item_samplebadge) {           Toast.makeText(this, R.string.sample_3, Toast.LENGTH_SHORT).show();           badgeCount--;           invalidateOptionsMenu();           return true;       } else if (id == SAMPLE2_ID) {           Toast.makeText(this, R.string.sample_4, Toast.LENGTH_SHORT).show();       }       return super.onOptionsItemSelected(item);   }