getHeight()' on a null object reference

[DevMensIT]

Hey there i want to know what is limit of graph? i have more than 5k records with nodes. i need help to solve this.

java.lang.NullPointerException: Attempt to invoke virtual method 'int de.blox.graphview.Size.getHeight()' on a null object reference at de.blox.graphview.Node.getHeight(Node.java:45) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:69) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:89) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.run(BuchheimWalkerAlgorithm.java:345) at de.blox.graphview.BaseGraphAdapter.notifySizeChanged(BaseGraphAdapter.java:41) at de.blox.graphview.GraphNodeContainerView.onMeasure(GraphNodeContainerView.java:367) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChild(ViewGroup.java:6799) at android.view.ViewGroup.measureChildren(ViewGroup.java:6776) at com.otaliastudios.zoom.ZoomLayout.onMeasure(ZoomLayout.java:104) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1204) at android.widget.LinearLayout.onMeasure(LinearLayout.java:723) at android.view.View.measure(View.java:24549) at androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1227) at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1572) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:143) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at androidx.appcompat.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:401) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at com.android.internal.policy.DecorView.onMeasure(DecorView.java:742) at android.view.View.measure(View.java:24549) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:3007) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1834) 2020-03-19 23:40:57.893 27200-27200/com.kishanmaniar.treeview E/AndroidRuntime: at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2123) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1722) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7605) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1029) at android.view.Choreographer.doCallbacks(Choreographer.java:852) at android.view.Choreographer.doFrame(Choreographer.java:787) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1014) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7403) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:935)

[GregorBlock]

Hi, so 5k nodes are definitely too much for GraphView as it is not yet optimized for it. Which version do you use? Actually there should be no npe at this place.

[DevMensIT]

is there any alternative option ? what max node size ? i'm really looking for this but now i'm stuck here version using : 0.4.2 really i need your help.

[GregorBlock]

Well there is already a newer version 0.6.1. I would suggest you try again with an update. Unfortunately it is not possible to draw so many nodes at the same time with the current approach.

[DevMensIT]

okay I'll try after update and notify you. but what's max limit or the graph ?

[GregorBlock]

In theory, there is no limit. It depends on how complex you design the nodes View and the runtime of the chosen algorithm.

[DevMensIT]

hey i updated version and now im getting this error. algorithm : BuchheimWalkerAlgorithm

java.lang.StackOverflowError: stack size 8192KB at java.util.ArrayList.grow(ArrayList.java:275) at java.util.ArrayList.ensureExplicitCapacity(ArrayList.java:249) at java.util.ArrayList.ensureCapacityInternal(ArrayList.java:241) at java.util.ArrayList.add(ArrayList.java:467) at de.blox.graphview.Graph.predecessorsOf(Graph.java:282) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.hasLeftSibling(BuchheimWalkerAlgorithm.java:312) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:78) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) 2020-03-21 20:24:50.282 24823-24823/com.kishanmaniar.treeview E/AndroidRuntime: at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) 2020-03-21 20:24:50.331 24823-24836/com.kishanmaniar.treeview I/maniar.treevie: Background young concurrent copying GC freed 60390(2536KB) AllocSpace objects, 1(804KB) LOS objects, 0% free, 18MB/18MB, paused 89us total 105.910ms 2020-03-21 20:24:50.522 24823-24823/com.kishanmaniar.treeview I/chatty: uid=10036(com.kishanmaniar.treeview) identical 1215 lines 2020-03-21 20:24:50.522 24823-24823/com.kishanmaniar.treeview E/AndroidRuntime: at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) 2020-03-21 20:24:50.523 24823-24823/com.kishanmaniar.treeview E/AndroidRuntime: at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.firstWalk(BuchheimWalkerAlgorithm.java:90) at de.blox.graphview.tree.BuchheimWalkerAlgorithm.run(BuchheimWalkerAlgorithm.java:363) at de.blox.graphview.BaseGraphAdapter.notifySizeChanged(BaseGraphAdapter.java:29) at de.blox.graphview.GraphNodeContainerView.onMeasure(GraphNodeContainerView.java:368) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChild(ViewGroup.java:6799) at android.view.ViewGroup.measureChildren(ViewGroup.java:6776) at com.otaliastudios.zoom.ZoomLayout.onMeasure(ZoomLayout.kt:129) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1204) at android.widget.LinearLayout.onMeasure(LinearLayout.java:723) at android.view.View.measure(View.java:24549) at androidx.constraintlayout.widget.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1227) at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1572) 2020-03-21 20:24:50.523 24823-24823/com.kishanmaniar.treeview E/AndroidRuntime: at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:143) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at androidx.appcompat.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:401) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552) at android.widget.LinearLayout.measureVertical(LinearLayout.java:842) at android.widget.LinearLayout.onMeasure(LinearLayout.java:721) at android.view.View.measure(View.java:24549) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at com.android.internal.policy.DecorView.onMeasure(DecorView.java:742) at android.view.View.measure(View.java:24549) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:3007) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1834) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2123) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1722) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7605) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1029) at android.view.Choreographer.doCallbacks(Choreographer.java:852) at android.view.Choreographer.doFrame(Choreographer.java:787) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1014) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7403) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:935)

[GregorBlock]

Stackoverflow can be an indicator that you have a loop in your structure. It could be something else without having more information.

[DevMensIT]

yes. i have loop and I'm using hashmap to store nodes. please help me to find a way.

[GregorBlock]

BuchheimWalker does not support loops because it was developed for tree structures. You could use the Sugiyama for this.

[DevMensIT]

I'm not using algorithm inside loop but i used loop for create nodes only. algorithm is outside the loop.

i will check that and will notify you. thank you.

[GregorBlock]

No, I meant a loop in your data structure,

for example: a -> b -> c -> a (loop here)

[DevMensIT]

actually my first loop here

 final Graph graph = new Graph();
        loop(){
final Node node1 = new Node(getNodeText());
}

first loop to create all nodes.

2. Loop for create .addEdge

loop(){
graph.addEdge(node1, node2);
}

[DennisBlock]

@GregorBlock didn't mean your loop statements. He is talking about a loop or cycle (in graph theory) in your graph.

[DevMensIT]

i will try Sugiyama. hope it will help.

[DevMensIT]

i tried to use SugiyamaAlgorithm but everything is getting messup. checkout

BuchheimWalker algorithm only can help me but i not able to find why its getting crash. and my loop structure is also well.

[GregorBlock]

I'm closing this issue due to inactivity. If you have further input on the issue, don't hesitate to reopen this issue or post a new one.