Immediate Fix
The fastest way to resolve screen flickering in React Native on Android is to force the specific View to use software rendering. This bypasses hardware acceleration glitches often found in certain Android GPU drivers.
Add the androidLayerType="software" prop to your flickering component. This is particularly effective for views involving complex animations or SVG rendering.
// Apply this to the View causing the flicker
{/* Your content here */}
If the flickering occurs during navigation transitions, ensure your detachPreviousScreen property in React Navigation is set correctly, or disable hardware acceleration globally for that specific activity in the AndroidManifest.xml.
Technical Explanation
Screen flickering usually happens when the UI thread and the JavaScript thread are out of sync during a frame update. In React Native, the JS thread calculates the layout, while the UI thread handles the actual drawing.
When “Hardware Acceleration” is enabled, the Android OS uses the GPU to render the UI. If a view updates its properties (like opacity or transforms) faster than the GPU can re-composite the layer, you see a “flicker” or a blank frame.
Another common cause is “Layout Thrashing.” This happens when state updates trigger multiple re-renders in a single frame. On Android, this can lead to a race condition where the native view is cleared before the new content is ready to be painted.
Alternative Methods
If software rendering doesn’t solve the issue, the problem might lie in how your data is being handled or how the list is being rendered. Use the table below to identify other common fixes.
| Problem Area | Recommended Fix |
|---|---|
| FlatList Flickering | Set removeClippedSubviews={true} and initialNumToRender. |
| State Updates | Use React.memo or useMemo to prevent unnecessary re-renders. |
| Image Loading | Use react-native-fast-image to handle caching and flickering on load. |
| Navigation Blinks | Enable react-native-screens to use native view primitives. |
Check your FlatList performance. If you are rendering large lists, the “white flash” or flicker often occurs when the windowSize is too large, causing the device to run out of memory during a scroll event.
item.id}
renderItem={renderItem}
/>
Finally, ensure that you are not updating the state inside a onLayout callback without proper checks, as this creates an infinite loop of rendering that manifests as constant flickering on Android devices.