Child View invisible after addView() on API 16

Question

I have a problem with Views, but only on API 16 :-(

There is a CustomView, which looks like this:

<LinearLayout
    android:id="top_container"
    android:orientation="vertical">

    <LineartLayout
        android:id="labels"
        android:orientation="horizontal"/>

    <FrameLayout
        android:id="content"/>
</LinearLayout>

Now what happens in code is that on onLayout() of the view, if changed==true, I query an adapter object for a set of LabelViews and one ContentView. I put the labels into the labels LinearLayout and the content into content FrameLayout.

It works great, except on API 16, where the labels and content are queried from the adapter, added to the respective containers, but are not shown! :-( Moreover, the containers actually resize correctly, so the Views have measured dimens, just no visual data displayed :-(

By trying several solutions I have noticed that if I add the content View with LayoutParams(LayoutParams.MATCH_PARENT, XX) where XX is an actual number, it will show the views...

Any ideas? Was there some change in the ViewGroup logic after API 16 that could have caused that?

EDIT:

This is how the invisible child view shows in tha output of adb shell dumpsys activity top (in the above structure it is the direct child of top_container):

android.widget.LinearLayout{42960190 V.E..... ... 0,0-0,0 #7f0f036f app:id/labels}
  com.example.view.pricebox.CheckoutLabelView{42614a18 V.E...C. ... 0,0-0,0}
    android.widget.RelativeLayout{43118438 V.E..... ... 0,0-0,0}
      android.support.v7.widget.AppCompatTextView{4310feb8 V.ED.... ... 0,0-0,0 #7f0f0371 app:id/label_name}
      android.support.v7.widget.AppCompatImageView{421b8080 V.ED.... ... 0,0-0,0 #7f0f0372 app:id/label_icon}
    com.example.view.pricebox.CheckoutLabelView{4261f8a8 V.E...C. ... 0,0-0,0}
      android.widget.RelativeLayout{4207e4e0 V.E..... ... 0,0-0,0}
        android.support.v7.widget.AppCompatTextView{43129410 V.ED.... ... 0,0-0,0 #7f0f0371 app:id/label_name}
        android.support.v7.widget.AppCompatImageView{4205d938 V.ED.... ... 0,0-0,0 #7f0f0372 app:id/label_icon}
      android.widget.FrameLayout{42960870 V.E..... ... 0,0-0,0 #7f0f0370 app:id/content}
        com.example.view.pricebox.checkouts.CheckoutView{41db1fd0 V.E..... ... 0,0-0,0}
           android.widget.FrameLayout{42d73308 V.E..... ... 0,0-0,0 #7f0f0367 app:id/content_button_container}
              android.support.v7.widget.AppCompatButton{4224d3e0 VFED..C. ... 0,0-0,0 #7f0f0368 app:id/content_button}
              android.widget.ProgressBar{41ab5288 G.ED.... ... 0,0-0,0 #7f0f0369 app:id/content_button_loading}
           android.support.v7.widget.AppCompatTextView{4273cd08 V.ED.... ... 0,0-0,0 #7f0f036a app:id/content_label1}
           android.widget.RelativeLayout{43100b20 V.E..... ... 0,0-0,0 #7f0f036b app:id/content_stuff_container}
              android.support.v7.widget.AppCompatImageView{42554f58 V.ED.... ... 0,0-0,0 #7f0f036c app:id/content_icon1}
              android.support.v7.widget.AppCompatTextView{423beee0 V.ED.... ... 0,0-0,0 #7f0f036d app:id/content_icon2}
              android.support.v7.widget.AppCompatTextView{41e02ed8 V.ED.... ... 0,0-0,0 #7f0f036e app:id/content_label2}

execute `adb shell dumpsys activity top` and post its output — pskink, Aug 03 '16 at 12:55
Well I have checked the Android Tools vie dump, it shows the containers to have no children. But in code, if I breakpoint right after the addView(), the container reports having one child — Kelevandos, Aug 03 '16 at 12:55
so you are saying that you called `ViewGroup#addView` and `ViewGroup#getChildCount` is not increased? — pskink, Aug 03 '16 at 12:58
It is, that is the point. The View is just not showing. I run your command, it shows the invisible view, I will post that part in a sec — Kelevandos, Aug 03 '16 at 12:59
so post the output of `adb shell dumpsys activity top` before and after calling `addView` (you can just limit it to view tree) — pskink, Aug 03 '16 at 13:00
all of your views have [0,0-0,0] dims [left,top-right,bottom], even those that are not children of `app:id/content`, what are laout params of `app:id/labels`? — pskink, Aug 03 '16 at 13:19
I see, but the containers - 'labels' and 'content' - actually take space on the screen :/ — Kelevandos, Aug 03 '16 at 13:22
how come if they are 0,0-0,0? i run the same command on some test activity and the results are here: http://pastebin.com/2f2UeSQ4, notice the numbers after `......`, they are not 0,0-0,0 — pskink, Aug 03 '16 at 13:30
Could you try API 16? It is working fine > 16 for me as well :-( — Kelevandos, Aug 03 '16 at 13:44

Child View invisible after addView() on API 16

0 Answers0