[LeakScope] 24 Android lifecycle/memory violations detected

## LeakScope: Android Lifecycle & Memory Leak Violations

> **About this report:** This issue was automatically generated by **LeakScope**, a static analysis tool for Android lifecycle violations and memory leaks built on the [Soot](https://github.com/soot-oss/soot) framework. This is part of an ongoing academic research study targeting ICSE 2027. No immediate action is required — we would greatly appreciate your feedback on whether these findings are accurate.

### Summary

LeakScope detected **24 potential issue(s)** across **2 detector type(s)**:

| Severity | Count |
|---|---|
| 🔴 High | 19 |
| 🟡 Medium | 0 |
| 🟢 Low (improvement opportunity) | 5 |

| Detector | Count | Severity | Description |
|---|---|---|---|
| `ThreadedUIReference` | 19 | 🔴 High | Worker thread captures Activity/Fragment/View reference |
| `ViewBindingOpportunity` | 5 | 🟢 Low | Manual findViewById() calls — ViewBinding migration opportunity |

---

### Detailed Findings

#### 🔴 `ThreadedUIReference`
*Worker thread captures Activity/Fragment/View reference*

**Finding #1 — `RealTimeUniformMeshChart3DFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimeUniformMeshChart3DFragment
Method: void initExample(com.scichart.charting3d.visuals.SciChartSurface3D)
Statement: $r24 = new com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimeUniformMeshChart3DFragment$$ExternalSyntheticLambda0
Captured UI objects:
  - r0 : com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimeUniformMeshChart3DFragment
  - $r1 : com.scichart.charting3d.visuals.SciChartSurface3D
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #2 — `RealtimeGeoid3DChartFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples3d.realtime3DCharts;\n\n// Class: com.scichart.examples.fragments.examples3d.realtime3DCharts.RealtimeGeoid3DChartFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples3d.realtime3DCharts.RealtimeGeoid3DChartFragment\nMethod: void initExample(com.scichart.charting3d.visuals.SciChartSurface3D)\nStatement: $r28 \u003d new com.scichart.examples.fragments.examples3d.realtime3DCharts.RealtimeGeoid3DChartFragment$$ExternalSyntheticLambda0\nCaptured UI objects:\n  - r0 : com.scichart.examples.fragments.examples3d.realtime3DCharts.RealtimeGeoid3DChartFragment\n  - $r1 : com.scichart.charting3d.visuals.SciChartSurface3D\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects to worker threads\n"
}
{
  "text_in
… (truncated for brevity)
```

**Finding #3 — `RealTimeWaterfall3DChartFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples3d.realtime3DCharts;\n\n// Class: com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimeWaterfall3DChartFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimeWaterfall3DChartFragment\nMethod: void initExample(com.scichart.charting3d.visuals.SciChartSurface3D)\nStatement: $r2 \u003d new com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimeWaterfall3DChartFragment$$ExternalSyntheticLambda2\nCaptured UI objects:\n  - $r1 : com.scichart.charting3d.visuals.SciChartSurface3D\n  - r0 : com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimeWaterfall3DChartFragment\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects to worker threads\n"
… (truncated for brevity)
```

**Finding #4 — `RealTimePointCloud3DChartFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples3d.realtime3DCharts;\n\n// Class: com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimePointCloud3DChartFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimePointCloud3DChartFragment\nMethod: void initExample(com.scichart.charting3d.visuals.SciChartSurface3D)\nStatement: r22 \u003d new com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimePointCloud3DChartFragment$$ExternalSyntheticLambda0\nCaptured UI objects:\n  - r0 : com.scichart.examples.fragments.examples3d.realtime3DCharts.RealTimePointCloud3DChartFragment\n  - $r1 : com.scichart.charting3d.visuals.SciChartSurface3D\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects to worker thread
… (truncated for brevity)
```

**Finding #5 — `Chart3DSandboxFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.examples3d.aTest.Chart3DSandboxFragment
Method: void initExample(com.scichart.charting3d.visuals.SciChartSurface3D)
Statement: $r24 = new com.scichart.examples.fragments.examples3d.aTest.Chart3DSandboxFragment$$ExternalSyntheticLambda0
Captured UI objects:
  - $r1 : com.scichart.charting3d.visuals.SciChartSurface3D
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #6 — `RenderSurfaceSandboxFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.examples2d.aTest.RenderSurfaceSandboxFragment
Method: void initExample(com.scichart.examples.databinding.ExampleRenderSurfaceSandboxFragmentBinding)
Statement: $r18 = new com.scichart.examples.fragments.examples2d.aTest.RenderSurfaceSandboxFragment$$ExternalSyntheticLambda0
Captured UI objects:
  - r0 : com.scichart.examples.fragments.examples2d.aTest.RenderSurfaceSandboxFragment
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #7 — `ECGMonitorFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.featuredApps.medicalCharts.ECGMonitorFragment
Method: void initExample(com.scichart.charting.visuals.SciChartSurface)
Statement: $r6 = new com.scichart.examples.fragments.featuredApps.medicalCharts.ECGMonitorFragment$$ExternalSyntheticLambda0
Captured UI objects:
  - $r1 : com.scichart.charting.visuals.SciChartSurface
  - r0 : com.scichart.examples.fragments.featuredApps.medicalCharts.ECGMonitorFragment
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #8 — `AnimatingLineChartFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples2d.createCustomAnimations;\n\n// Class: com.scichart.examples.fragments.examples2d.createCustomAnimations.AnimatingLineChartFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples2d.createCustomAnimations.AnimatingLineChartFragment\nMethod: void initExample(com.scichart.charting.visuals.SciChartSurface)\nStatement: $r6 \u003d new com.scichart.examples.fragments.examples2d.createCustomAnimations.AnimatingLineChartFragment$$ExternalSyntheticLambda2\nCaptured UI objects:\n  - r0 : com.scichart.examples.fragments.examples2d.createCustomAnimations.AnimatingLineChartFragment\n  - $r1 : com.scichart.charting.visuals.SciChartSurface\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects to worker threads\n"
}
… (truncated for brevity)
```

**Finding #9 — `AnimatingStackedColumnChartFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.examples2d.createCustomAnimations.AnimatingStackedColumnChartFragment
Method: java.util.concurrent.ScheduledFuture createSchedule()
Statement: $r1 = new com.scichart.examples.fragments.examples2d.createCustomAnimations.AnimatingStackedColumnChartFragment$$ExternalSyntheticLambda6
Captured UI objects:
  - r0 : com.scichart.examples.fragments.examples2d.createCustomAnimations.AnimatingStackedColumnChartFragment
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #10 — `RealtimeSeriesValuesOnAxisFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples2d.createRealtimeCharts;\n\n// Class: com.scichart.examples.fragments.examples2d.createRealtimeCharts.RealtimeSeriesValuesOnAxisFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples2d.createRealtimeCharts.RealtimeSeriesValuesOnAxisFragment\nMethod: void initExample(com.scichart.charting.visuals.SciChartSurface)\nStatement: $r2 \u003d new com.scichart.examples.fragments.examples2d.createRealtimeCharts.RealtimeSeriesValuesOnAxisFragment$$ExternalSyntheticLambda0\nCaptured UI objects:\n  - $r1 : com.scichart.charting.visuals.SciChartSurface\n  - r0 : com.scichart.examples.fragments.examples2d.createRealtimeCharts.RealtimeSeriesValuesOnAxisFragment\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects 
… (truncated for brevity)
```

**Finding #11 — `FixedWidthAxisFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples2d.modifyAxisBehavior;\n\n// Class: com.scichart.examples.fragments.examples2d.modifyAxisBehavior.FixedWidthAxisFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples2d.modifyAxisBehavior.FixedWidthAxisFragment\nMethod: void initExample(com.scichart.charting.visuals.SciChartSurface)\nStatement: $r19 \u003d new com.scichart.examples.fragments.examples2d.modifyAxisBehavior.FixedWidthAxisFragment$$ExternalSyntheticLambda0\nCaptured UI objects:\n  - $r1 : com.scichart.charting.visuals.SciChartSurface\n  - r0 : com.scichart.examples.fragments.examples2d.modifyAxisBehavior.FixedWidthAxisFragment\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects to worker threads\n"
}
{
  "text_input": "package com.sci
… (truncated for brevity)
```

**Finding #12 — `PerformanceDemoFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.examples2d.createRealtimeCharts.PerformanceDemoFragment
Method: void initExample(com.scichart.charting.visuals.SciChartSurface)
Statement: $r2 = new com.scichart.examples.fragments.examples2d.createRealtimeCharts.PerformanceDemoFragment$$ExternalSyntheticLambda2
Captured UI objects:
  - r0 : com.scichart.examples.fragments.examples2d.createRealtimeCharts.PerformanceDemoFragment
  - $r1 : com.scichart.charting.visuals.SciChartSurface
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #13 — `PinchZoomOnRealtimeChartFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples2d.createRealtimeCharts;\n\n// Class: com.scichart.examples.fragments.examples2d.createRealtimeCharts.PinchZoomOnRealtimeChartFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples2d.createRealtimeCharts.PinchZoomOnRealtimeChartFragment\nMethod: void initExample(com.scichart.charting.visuals.SciChartSurface)\nStatement: $r16 \u003d new com.scichart.examples.fragments.examples2d.createRealtimeCharts.PinchZoomOnRealtimeChartFragment$$ExternalSyntheticLambda0\nCaptured UI objects:\n  - $r1 : com.scichart.charting.visuals.SciChartSurface\n  - r0 : com.scichart.examples.fragments.examples2d.createRealtimeCharts.PinchZoomOnRealtimeChartFragment\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects to work
… (truncated for brevity)
```

**Finding #14 — `RealTimeMinMaxAnnotationFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.examples2d.createRealtimeCharts.RealTimeMinMaxAnnotationFragment
Method: void initExample(com.scichart.charting.visuals.SciChartSurface)
Statement: $r6 = new com.scichart.examples.fragments.examples2d.createRealtimeCharts.RealTimeMinMaxAnnotationFragment$$ExternalSyntheticLambda1
Captured UI objects:
  - r0 : com.scichart.examples.fragments.examples2d.createRealtimeCharts.RealTimeMinMaxAnnotationFragment
  - $r1 : com.scichart.charting.visuals.SciChartSurface
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #15 — `FifoChartsFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples2d.createRealtimeCharts;\n\n// Class: com.scichart.examples.fragments.examples2d.createRealtimeCharts.FifoChartsFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples2d.createRealtimeCharts.FifoChartsFragment\nMethod: void initExample(com.scichart.charting.visuals.SciChartSurface)\nStatement: $r2 \u003d new com.scichart.examples.fragments.examples2d.createRealtimeCharts.FifoChartsFragment$$ExternalSyntheticLambda1\nCaptured UI objects:\n  - $r1 : com.scichart.charting.visuals.SciChartSurface\nRisk: UI object will be kept in memory until thread completes\nFix: Use WeakReference or avoid passing UI objects to worker threads\n"
}
{
  "text_input": "package com.scichart.examples.fragments.examples2d.createRealtimeCharts;\n\n// Class: com.scichart.examples.fragmen
… (truncated for brevity)
```

**Finding #16 — `StartupActivity`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.StartupActivity
Method: void onCreate(android.os.Bundle)
Statement: $r12 = new com.scichart.examples.StartupActivity$ParseExampleTasks
Captured UI objects:
  - r0 : com.scichart.examples.StartupActivity
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #17 — `HeatmapChartFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.examples2d.basicChartTypes.HeatmapChartFragment
Method: void initExample(com.scichart.examples.databinding.ExampleHeatmapChartFragmentBinding)
Statement: $r3 = new com.scichart.examples.fragments.examples2d.basicChartTypes.HeatmapChartFragment$$ExternalSyntheticLambda1
Captured UI objects:
  - r21 : com.scichart.charting.visuals.SciChartSurface
  - r0 : com.scichart.examples.fragments.examples2d.basicChartTypes.HeatmapChartFragment
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

**Finding #18 — `SurfaceMeshWithMetadataProvider3DChartFragment\n// (Full source code omitted for brevity)\n"`**

```
{
  "text_input": "package com.scichart.examples.fragments.examples3d.createSurfaceMeshChart;\n\n// Class: com.scichart.examples.fragments.examples3d.createSurfaceMeshChart.SurfaceMeshWithMetadataProvider3DChartFragment\n// (Full source code omitted for brevity)\n",
  "output": "Yes",
  "project": "examples",
  "explanation": "Scenario 1: Worker thread holds UI object reference\nClass: com.scichart.examples.fragments.examples3d.createSurfaceMeshChart.SurfaceMeshWithMetadataProvider3DChartFragment\nMethod: void initExample(com.scichart.charting3d.visuals.SciChartSurface3D)\nStatement: $r21 \u003d new com.scichart.examples.fragments.examples3d.createSurfaceMeshChart.SurfaceMeshWithMetadataProvider3DChartFragment$$ExternalSyntheticLambda1\nCaptured UI objects:\n  - $r1 : com.scichart.charting3d.visuals.SciChartSurface3D\n  - r0 : com.scichart.examples.fragments.examples3d.createSurfaceMeshChart.SurfaceMeshWithMetadataProvider3DChartFragment\nRisk: UI object will be kept in memory until th
… (truncated for brevity)
```

**Finding #19 — `OscilloscopeFragment`**

```
Scenario 1: Worker thread holds UI object reference
Class: com.scichart.examples.fragments.featuredApps.scientificCharts.OscilloscopeFragment
Method: void initExample(com.scichart.charting.visuals.SciChartSurface)
Statement: $r6 = new com.scichart.examples.fragments.featuredApps.scientificCharts.OscilloscopeFragment$$ExternalSyntheticLambda0
Captured UI objects:
  - r0 : com.scichart.examples.fragments.featuredApps.scientificCharts.OscilloscopeFragment
  - $r1 : com.scichart.charting.visuals.SciChartSurface
Risk: UI object will be kept in memory until thread completes
Fix: Use WeakReference or avoid passing UI objects to worker threads
```

#### 🟢 `ViewBindingOpportunity`
*Manual findViewById() calls — ViewBinding migration opportunity*

**Finding #20 — `ShowcaseActivity`**

```
View Binding Migration Opportunity
Class: com.scichart.examples.ShowcaseActivity
Type: Activity
Current Pattern: Manual view lookup
findViewById() Calls:
  â€¢ findViewById in onPostResume
  â€¢ findViewById in onPostResume
Benefits of View Binding:
- Eliminates boilerplate findViewById() calls
- Compile-time type safety for view references
- Reduced null pointer exceptions
- Cleaner, more maintainable code
Note: This is a code modernization suggestion, not a memory leak
```

**Finding #21 — `ExampleActivity`**

```
View Binding Migration Opportunity
Class: com.scichart.examples.ExampleActivity
Type: Activity
Current Pattern: Manual view lookup
findViewById() Calls:
  â€¢ findViewById in getTargetChart
Benefits of View Binding:
- Eliminates boilerplate findViewById() calls
- Compile-time type safety for view references
- Reduced null pointer exceptions
- Cleaner, more maintainable code
Note: This is a code modernization suggestion, not a memory leak
```

**Finding #22 — `ExampleActivityBase`**

```
View Binding Migration Opportunity
Class: com.scichart.examples.ExampleActivityBase
Type: Activity
Current Pattern: Manual view lookup
findViewById() Calls:
  â€¢ findViewById in openDescriptionInfoDialog
  â€¢ findViewById in setUpDrawerAndToolbar
  â€¢ findViewById in setUpDrawerAndToolbar
Benefits of View Binding:
- Eliminates boilerplate findViewById() calls
- Compile-time type safety for view references
- Reduced null pointer exceptions
- Cleaner, more maintainable code
Note: This is a code modernization suggestion, not a memory leak
```

**Finding #23 — `Example3DActivity`**

```
View Binding Migration Opportunity
Class: com.scichart.examples.Example3DActivity
Type: Activity
Current Pattern: Manual view lookup
findViewById() Calls:
  â€¢ findViewById in onPostResume
Benefits of View Binding:
- Eliminates boilerplate findViewById() calls
- Compile-time type safety for view references
- Reduced null pointer exceptions
- Cleaner, more maintainable code
Note: This is a code modernization suggestion, not a memory leak
```

**Finding #24 — `ExceptionActivity`**

```
View Binding Migration Opportunity
Class: com.scichart.examples.ExceptionActivity
Type: Activity
Current Pattern: Manual view lookup
findViewById() Calls:
  â€¢ findViewById in onCreate
  â€¢ findViewById in onCreate
  â€¢ findViewById in onCreate
  â€¢ findViewById in onCreate
Benefits of View Binding:
- Eliminates boilerplate findViewById() calls
- Compile-time type safety for view references
- Reduced null pointer exceptions
- Cleaner, more maintainable code
Note: This is a code modernization suggestion, not a memory leak
```

---

**How to respond to this issue:**
- If a finding is a **true positive**: consider applying the recommended fix and closing this issue.
- If a finding is a **false positive**: please leave a comment explaining why — your feedback directly improves our research.
- If you have questions: reply here or open a discussion.

*This report was generated by LeakScope as part of the [ICSE 2027 research artifact](https://github.com/). Tool analyzes compiled APKs using Soot static analysis on [SciChart.Android.Examples](https://github.com/ABTSoftware/SciChart.Android.Examples).*

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[LeakScope] 24 Android lifecycle/memory violations detected #29

LeakScope: Android Lifecycle & Memory Leak Violations

Summary

Detailed Findings

🔴 `ThreadedUIReference`

🟢 `ViewBindingOpportunity`

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Detector	Count	Severity	Description
`ThreadedUIReference`	19	🔴 High	Worker thread captures Activity/Fragment/View reference
`ViewBindingOpportunity`	5	🟢 Low	Manual findViewById() calls — ViewBinding migration opportunity

[LeakScope] 24 Android lifecycle/memory violations detected #29

Description

LeakScope: Android Lifecycle & Memory Leak Violations

Summary

Detailed Findings

🔴 ThreadedUIReference

🟢 ViewBindingOpportunity

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions

🔴 `ThreadedUIReference`

🟢 `ViewBindingOpportunity`