像谷歌这样的操作栏通知计数图标(徽章) [英] Actionbar notification count icon (badge) like Google has

问题描述

是否有 Android 标准徽章或方法来显示操作栏通知图标和 Google 示例中的计数一样?

Is there a android standard badge or method to show action bar notification icon with a count like on Google examples?

如果没有，那么最好的方法是什么?
我是安卓新手，请帮忙.

If not, then what is the best way to make it?
I'm new to android, please help.

推荐答案

我不确定这是否是最好的解决方案，但这是我需要的.

I am not sure if this is the best solution or not, but it is what I need.

如果您知道为了更好的性能或质量需要改变什么，请告诉我.就我而言，我有一个按钮.

Please tell me if you know what is need to be changed for better performance or quality. In my case, I have a button.

我的菜单上的自定义项 - main.xml

Custom item on my menu - main.xml

<item
    android:id="@+id/badge"
    android:actionLayout="@layout/feed_update_count"
    android:icon="@drawable/shape_notification"
    android:showAsAction="always">
</item>

自定义形状可绘制(背景方块)- shape_notification.xml

Custom shape drawable (background square) - shape_notification.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
   android:shape="rectangle">
    <stroke android:color="#22000000" android:width="2dp"/>
    <corners android:radius="5dp" />
    <solid android:color="#CC0001"/>
</shape>

我的视图布局 - feed_update_count.xml

Layout for my view - feed_update_count.xml

<?xml version="1.0" encoding="utf-8"?>
<Button xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/notif_count"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:minWidth="32dp"
     android:minHeight="32dp"
     android:background="@drawable/shape_notification"
     android:text="0"
     android:textSize="16sp"
     android:textColor="@android:color/white"
     android:gravity="center"
     android:padding="2dp"
     android:singleLine="true">    
</Button>

MainActivity - 设置和更新我的视图

MainActivity - setting and updating my view

static Button notifCount;
static int mNotifCount = 0;    

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getSupportMenuInflater();
    inflater.inflate(R.menu.main, menu);

    View count = menu.findItem(R.id.badge).getActionView();
    notifCount = (Button) count.findViewById(R.id.notif_count);
    notifCount.setText(String.valueOf(mNotifCount));
    return super.onCreateOptionsMenu(menu);
}

private void setNotifCount(int count){
    mNotifCount = count;
    invalidateOptionsMenu();
}

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