如何在Android的工具栏图标显示通知的数量 [英] How to display count of notifications in toolbar icon in android

问题描述

我想提出针对Android就像车的图标计数器。我见过很多电子商务应用车图标计数增加。我告诉flipkart应用程序快照： -

I would like to make an icon counter for android just like the cart. I have seen many e-commerce app cart icon count increase. I show flipkart app snapshot.:-

推荐答案

在我的解决方案，whnever新通知到来计数器将增加像如u说，车在购物应用程序。
试试这个，它工作在我的MOTO E2。
确保üř使用上述API 14

In my solution , whnever a new notification come counter will increase like as u said cart in shopping apps. Try this, it works on my MOTO e2. Make sure u r using above API 14

创建像一个布局：

   <ImageView
    android:id="@+id/counterBackground"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/unread_background" />

<TextView
    android:id="@+id/count"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="1"
    android:textSize="8sp"
    android:layout_centerInParent="true"
    android:textColor="#FFFFFF" />

在onCreateOptionMenu添加code

In onCreateOptionMenu Add code

   @Override
   public boolean onCreateOptionsMenu(Menu menu) {
   getMenuInflater().inflate(R.menu.menu_main, menu);

   MenuItem menuItem = menu.findItem(R.id.testAction);
 menuItem.setIcon(buildCounterDrawable(count,  R.drawable.ic_menu_gallery));

return true;
}

现在建立图标的方法：

  private Drawable buildCounterDrawable(int count, int backgroundImageId) {
LayoutInflater inflater = LayoutInflater.from(this);
View view = inflater.inflate(R.layout.counter_menuitem_layout, null);
view.setBackgroundResource(backgroundImageId);

if (count == 0) {
    View counterTextPanel = view.findViewById(R.id.counterValuePanel);
    counterTextPanel.setVisibility(View.GONE);
} else {
    TextView textView = (TextView) view.findViewById(R.id.count);
    textView.setText("" + count);
}

view.measure(
        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());

view.setDrawingCacheEnabled(true);
view.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false);

return new BitmapDrawable(getResources(), bitmap);
}

您可以从这里参考： https://github.com/cvoronin/ActionBarMenuItemCounter

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