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implementing Custom ViewGroup Not Measuring Children Correctly on Android 14

👀 Views: 56 💬 Answers: 1 📅 Created: 2025-06-10
android custom-view viewgroup layout Java

I've been banging my head against this for hours... I just started working with I'm working on a personal project and I'm working with a frustrating scenario with a custom `ViewGroup` where the children are not being measured correctly, leading to layout problems on Android 14. Specifically, when I try to add multiple child views dynamically, they don't appear as intended, and I get the following log warning: `ViewGroup requires a child view to be added.` My custom layout extends `ViewGroup` and overrides the `onMeasure` method, but it seems like the measurement logic isn’t functioning correctly. Here’s a simplified version of my implementation: ```java public class CustomViewGroup extends ViewGroup { public CustomViewGroup(Context context) { super(context); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int width = MeasureSpec.getSize(widthMeasureSpec); int height = 0; int childCount = getChildCount(); for (int i = 0; i < childCount; i++) { View child = getChildAt(i); measureChild(child, widthMeasureSpec, heightMeasureSpec); height += child.getMeasuredHeight(); } setMeasuredDimension(width, height); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { int currentHeight = 0; for (int i = 0; i < getChildCount(); i++) { View child = getChildAt(i); child.layout(l, currentHeight, r, currentHeight + child.getMeasuredHeight()); currentHeight += child.getMeasuredHeight(); } } } ``` I’m adding children to this `CustomViewGroup` like this: ```java CustomViewGroup customViewGroup = findViewById(R.id.custom_view_group); for (int i = 0; i < 5; i++) { TextView textView = new TextView(this); textView.setText("Child " + (i + 1)); customViewGroup.addView(textView); } ``` I’ve tried calling `requestLayout()` after adding the views, and I’ve also ensured that I’m measuring the children correctly using `measureChild()`, but it still doesn’t seem to render them properly. Has anyone dealt with this scenario before? Any insights on what might be going wrong or how to correctly implement the measurement for a custom `ViewGroup` would be greatly appreciated! My development environment is Ubuntu. What's the best practice here? This is part of a larger service I'm building. Any help would be greatly appreciated! I'm working with Java in a Docker container on Ubuntu 22.04. I'd love to hear your thoughts on this. I'm working in a Ubuntu 20.04 environment. Any suggestions would be helpful. For context: I'm using Java on Windows 11. Is there a better approach?