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I tried to implement android.gesture.GestureOverlayView in ScrollView. In my activity.xml

<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/scrollViewreceipt" > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <include android:id="@+id/include1" android:layout_width="fill_parent" android:layout_height="wrap_content" layout="@layout/toolbar" /> <Spinner android:id="@+id/custom_spinner" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="20dp" android:theme="@android:style/Theme.Holo.Light.DarkActionBar"/> <ListView android:id="@+id/customList" android:layout_width="match_parent" android:layout_height="300dp" android:layout_marginTop="15dp" /> <android.gesture.GestureOverlayView android:id="@+id/signaturePad" android:layout_width="match_parent" android:layout_height="80dp" android:layout_weight="5" android:background="#d3d3d3" android:eventsInterceptionEnabled="true" android:fadeEnabled="false" android:gestureColor="#333" android:gestureStrokeLengthThreshold="0.1" android:gestureStrokeType="multiple" android:fadeOffset="5000" android:orientation="vertical" > </android.gesture.GestureOverlayView> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:onClick="testImage" android:text="test"/> </LinearLayout>

But when i try to draw on my android.gesture.GestureOverlayView the view scroll and so it's inusable, and so i ask if how can i block a scroll when touch on android.gesture.GestureOverlayView.

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I solved in this way:

I extended a ScrollView with CustomScrollView

public class CustomScrollView extends ScrollView { private boolean enableScrolling = true; public boolean isEnableScrolling() { return enableScrolling; } public void setEnableScrolling(boolean enableScrolling) { this.enableScrolling = enableScrolling; } public CustomScrollView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public CustomScrollView(Context context, AttributeSet attrs) { super(context, attrs); } public CustomScrollView(Context context) { super(context); } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { if (isEnableScrolling()) { return super.onInterceptTouchEvent(ev); } else { return false; } } @Override public boolean onTouchEvent(MotionEvent ev) { if (isEnableScrolling()) { return super.onTouchEvent(ev); } else { return false; } } }

In my XML I have change ScrollView with my new extended class with id

<com.itmind.spac.spacapp.custom_extends.CustomScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/scrollViewreceipt" >......</com.itmind.spac.spacapp.custom_extends.CustomScrollView>

And in my ActivityClass 

public class CustomActivity implements GestureOverlayView.OnGestureListener { CustomScrollView myScrollView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState, R.layout.activity_receipts); GestureOverlayView signaturePad = (GestureOverlayView) findViewById(R.id.signaturePad); myScrollView = (CustomScrollView) findViewById(R.id.scrollViewreceipt); assert myScrollView != null; assert signaturePad != null; signaturePad.addOnGestureListener(this); } @Override public void onGestureStarted(GestureOverlayView overlay, MotionEvent event) { myScrollView.setEnableScrolling(false); } @Override public void onGesture(GestureOverlayView overlay, MotionEvent event) { } @Override public void onGestureEnded(GestureOverlayView overlay, MotionEvent event) { myScrollView.setEnableScrolling(true); } @Override public void onGestureCancelled(GestureOverlayView overlay, MotionEvent event) { }
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