-Search solution for the viewpager crashes actions when try to define a pattern horisontally

-In the ChildViewPager of security settings disable swipe horisontally and navigation now it is by tabs
-In the ChildViewPager modify the class so it can control when the swipe touch event is bloqued or not correctly

app/src/main/java/cy/agorise/crystalwallet/fragments/PatternSecurityFragment.java

@@ -28,6 +28,7 @@ import butterknife.OnTextChanged;
 import cy.agorise.crystalwallet.R;
 import cy.agorise.crystalwallet.application.CrystalSecurityMonitor;
 import cy.agorise.crystalwallet.models.GeneralSetting;
+import cy.agorise.crystalwallet.util.ChildViewPager;
 import cy.agorise.crystalwallet.util.PasswordManager;
 import cy.agorise.crystalwallet.viewmodels.GeneralSettingListViewModel;
 import cy.agorise.crystalwallet.viewmodels.validators.PinSecurityValidator;
@@ -45,9 +46,17 @@ public class PatternSecurityFragment extends Fragment {
     @BindView(R.id.tvPatternText)
     TextView tvPatternText;
 
+    /*
+    * Contains the ChildViewPager to block the viewpager when the user is using the pattern control
+    * */
+    private ChildViewPager childViewPager;
+
     private PatternLockViewListener actualPatternListener;
     private String patternEntered;
 
+
+
+
     public PatternSecurityFragment() {
         // Required empty public constructor
     }
@@ -80,6 +89,11 @@ public class PatternSecurityFragment extends Fragment {
         return patternString;
     }
 
+    public void setChildViewPager(ChildViewPager childViewPager) {
+        this.childViewPager = childViewPager;
+    }
+
+
     public void removePatternListener(){
         if (actualPatternListener != null){
             patternLockView.removePatternLockListener(actualPatternListener);
@@ -96,7 +110,6 @@ public class PatternSecurityFragment extends Fragment {
         actualPatternListener = new PatternLockViewListener() {
             @Override
             public void onStarted() {
-
             }
 
             @Override

app/src/main/java/cy/agorise/crystalwallet/fragments/SecuritySettingsFragment.java

@@ -96,7 +96,6 @@ public class SecuritySettingsFragment extends Fragment {
             default:
                 mPager.setCurrentItem(0);
         }
-        mPager.setSwipeLocked(true);
 
         TabLayout tabLayout = v.findViewById(R.id.tabs);
 
@@ -134,7 +133,9 @@ public class SecuritySettingsFragment extends Fragment {
                 case 1:
                     return new PinSecurityFragment();
                 case 2:
-                    return new PatternSecurityFragment();
+                    final PatternSecurityFragment patternSecurityFragment = new PatternSecurityFragment();
+                    patternSecurityFragment.setChildViewPager(mPager);
+                    return patternSecurityFragment;
             }
 
             return null; //new OnConstructionFragment();

app/src/main/java/cy/agorise/crystalwallet/util/ChildViewPager.java

@@ -4,6 +4,10 @@ import android.content.Context;
 import android.support.v4.view.ViewPager;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
+import android.view.animation.DecelerateInterpolator;
+import android.widget.Scroller;
+
+import java.lang.reflect.Field;
 
 /**
  * Created by xd on 1/18/18.
@@ -14,36 +18,47 @@ import android.view.MotionEvent;
 
 public class ChildViewPager extends ViewPager {
 
-    private boolean swipeLocked;
-
     public ChildViewPager(Context context) {
         super(context);
+
+        setMyScroller();
     }
 
     public ChildViewPager(Context context, AttributeSet attrs) {
         super(context, attrs);
     }
 
-    public boolean getSwipeLocked() {
-        return swipeLocked;
-    }
-
-    public void setSwipeLocked(boolean swipeLocked) {
-        this.swipeLocked = swipeLocked;
-    }
-
     @Override
     public boolean onTouchEvent(MotionEvent event) {
-        return !swipeLocked && super.onTouchEvent(event);
+        // stop swipe
+        return false;
     }
 
     @Override
     public boolean onInterceptTouchEvent(MotionEvent event) {
-        return !swipeLocked && super.onInterceptTouchEvent(event);
+        // stop switching pages
+        return false;
+    }
+
+    private void setMyScroller() {
+        try {
+            Class<?> viewpager = ViewPager.class;
+            Field scroller = viewpager.getDeclaredField("mScroller");
+            scroller.setAccessible(true);
+            scroller.set(this, new MyScroller(getContext()));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public class MyScroller extends Scroller {
+        public MyScroller(Context context) {
+            super(context, new DecelerateInterpolator());
         }
 
         @Override
-    public boolean canScrollHorizontally(int direction) {
+        public void startScroll(int startX, int startY, int dx, int dy, int duration) {
-        return !swipeLocked && super.canScrollHorizontally(direction);
+            super.startScroll(startX, startY, dx, dy, 350 /*1 secs*/);
+        }
     }
 }