viewgroup

This question already has an answer here: Differences between ConstraintLayout and RelativeLayout 10 answers Why RelativeLayout replaced to ConstraintLayout in the default layout file of an android empty activity. I need to know why we should use ConstraintLayout , what other benefits it provides to us. egfconnor As provided by Xaver Kapeller - "The main purpose of the ConstraintLayout is to fix problems with the RelativeLayout, and it does it so well. You can do so many things that were impossible with a RelativeLayout. And you can simplify your layout like you never could before.

I am trying out the new Barrier feature in the 1.1.0-beta1. It works as expected however there is this use-case I cant seem to figure or (or is possible ConstraintLayout at all?) What I am trying to accomplish is: I have a imageview to the left, and title and subtitle textviews to the right of the imageview. Imageview is fixed height. I have a button, that is bottom constrained to the bottom of the imageview however should be top constrained to the bottom of the subtitle textview, if subtitletextview is taller than imageview. (Btw I also tried having it bottom constrained to bottom of

i am working on a project where i need to add pins on image view as shown in below image. how could we do this. i successfully created a zoomable image view using TouchImageview.java class TouchImageView extends ImageView { Matrix matrix = new Matrix(); // We can be in one of these 3 states static final int NONE = 0; static final int DRAG = 1; static final int ZOOM = 2; int mode = NONE; // Remember some things for zooming PointF last = new PointF(); PointF start = new PointF(); float minScale = 1f; float maxScale = 3f; float[] m; float redundantXSpace, redundantYSpace; float width, height;

There is apparently a bug in Android which breaks View.bringToFront . If I have Views arranged in a GridView and want to bring a View to front by calling bringToFront(), it may get moved to the bottom right position in the GridView. Something shady is going on there, so I can't use bringToFront(). When I don't call it, everything works fine. But the Views overlap - if I use scale animation to scale up a View, it's partially obscured by the Views to the bottom and to the right. I've checked out bringToFront's source and it calls parent.bringChildToFront(...) it's this method public void

I have the following layout: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="match_parent" android:layout_width="match_parent"> <FrameLayout android:id="@+id/viewgroup_left" android:layout_height="match_parent" android:layout_weight="2" android:layout_width="0dp"> ... children ... </FrameLayout> <LinearLayout android:id="@+id/viewgroup_right" android:layout_height="match_parent" android:layout_weight="1" android:layout_width="0dp" android:orientation="vertical"> ... children ... </LinearLayout> <

I searched here on SO, on Google, on the android docs... But I cannot find a single snippet of code with a example of custom viewgroup, I find at most some vague explanations... Can someone provide one? How you make a viewgroup where you can put its children where you want? I think the simplest example to look at is the source for AbsoluteLayout.java https://github.com/android/platform_frameworks_base/blob/master/core/java/android/widget/AbsoluteLayout.java You need to override onMeasure to measure the children and onLayout to position them. I have strikingly more complicated ViewGroup code I