clean up

Author: SzymczakJ

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/view/ReactViewGroup.java

@@ -25,6 +25,7 @@
 import android.view.ViewParent;
 import android.view.ViewStructure;
 import android.view.animation.Animation;
+import android.util.Log;
 import androidx.annotation.Nullable;
 import com.facebook.common.logging.FLog;
 import com.facebook.infer.annotation.Assertions;
@@ -655,11 +656,7 @@ public void onViewRemoved(View child) {
         boolean matches = java.util.Arrays.stream(removalTrackedChildrenIDs)
                 .anyMatch(nativeID::equals);
         if (matches) {
-          StringBuilder stackTraceBuilder = new StringBuilder();
-          for (StackTraceElement element : new Exception().getStackTrace()) {
-            stackTraceBuilder.append("\n    at ").append(element.toString());
-          }
-          String stackTrace = stackTraceBuilder.toString();
+          String stackTrace = android.util.Log.getStackTraceString(new Throwable());
           FLog.e(ReactConstants.TAG, "onViewRemoved of one of the tracked children: " + nativeID + " with stack trace: " + "\n" + stackTrace);
         }
       }
@@ -1035,10 +1032,11 @@ protected void dispatchDraw(Canvas canvas) {
       try {
         ancestry = describeViewAncestry(this);
       } catch (Throwable ignore) {}
-      FLog.e(TAG, "NullPointerException in dispatchDraw of " + e.getStackTrace() + getClass().getName() + ": " + e.getMessage() + "\n Failing view ancestry: " + ancestry);
+      FLog.e(TAG, "NullPointerException in dispatchDraw of " + getClass().getName() + ": " + e.getMessage() + "\n Failing view ancestry: " + ancestry);
       FLog.e(TAG, "Child info: \n" + childrenCountInfo + "\n" + childrenViewInfo);
+      String caughtErrorStackTrace = android.util.Log.getStackTraceString(e);
       throw new NullPointerException(
-          "NullPointerException in dispatchDraw of " + getClass().getName() + ": " + e.getMessage() + "\n" + e.getStackTrace());
+          "NullPointerException in dispatchDraw of " + getClass().getName() + ": " + e.getMessage() + "\n" + caughtErrorStackTrace);
     }
   }