Summary
The issue at hand is a small flicker in the screen that occurs when the appbar/searchbar is hiding and the webview is pushing the appbar/searchbar to hide. This behavior is not consistent with other popular browser apps like Chrome Android and Opera Android.
Root Cause
The root cause of this issue is due to the following reasons:
- Incorrect animation handling: The current implementation uses
animate()methods to hide and show the appbar/searchbar, which can cause a flicker effect. - Insufficient synchronization: The webview and appbar/searchbar animations are not properly synchronized, leading to a jerky or flickering effect.
Why This Happens in Real Systems
This issue occurs in real systems due to the following factors:
- Complexity of Android UI: Android’s UI system is complex and has many moving parts, making it challenging to achieve smooth animations.
- Variations in device hardware: Different devices have varying hardware capabilities, which can affect the performance and smoothness of animations.
Real-World Impact
The impact of this issue is:
- Poor user experience: The flicker effect can be distracting and annoying for users, leading to a negative experience.
- Loss of engagement: A poorly performing app can lead to lower engagement and higher uninstall rates.
Example or Code
To fix this issue, we need to modify the animation handling and synchronization code. Here is an example:
// Use a more robust animation library like AndroidX Transition
import androidx.transition.TransitionManager
// ...
// Replace animate() methods with TransitionManager.beginDelayedTransition()
TransitionManager.beginDelayedTransition(appBarLayout)
appBarLayout.translationY = -appBarLayout.height.toFloat()How Senior Engineers Fix It
Senior engineers fix this issue by:
- Using more robust animation libraries like AndroidX Transition
- Improving synchronization between webview and appbar/searchbar animations
- Optimizing performance by reducing unnecessary computations and using hardware acceleration
Why Juniors Miss It
Junior engineers may miss this issue due to:
- Lack of experience with complex Android UI systems
- Insufficient knowledge of animation libraries and synchronization techniques
- Inadequate testing on various devices and hardware configurations