use an overriden ViewPager to fix IllegalArgumentException

app/src/main/java/gallery/simplemobiletools/com/MyViewPager.java

@@ -0,0 +1,37 @@
+package gallery.simplemobiletools.com;
+
+import android.content.Context;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+
+public class MyViewPager extends ViewPager {
+
+    public MyViewPager(Context context) {
+        super(context);
+    }
+
+    public MyViewPager(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        try {
+            return super.onInterceptTouchEvent(ev);
+        } catch (IllegalArgumentException ex) {
+            ex.printStackTrace();
+        }
+        return false;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        try {
+            return super.onTouchEvent(ev);
+        } catch (IllegalArgumentException ex) {
+            ex.printStackTrace();
+        }
+        return false;
+    }
+}

app/src/main/java/gallery/simplemobiletools/com/activities/ViewPagerActivity.java

@@ -4,7 +4,6 @@ import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.MediaStore;
-import android.support.v4.view.ViewPager;
 import android.support.v7.app.AppCompatActivity;
 
 import java.io.File;
@@ -12,6 +11,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import gallery.simplemobiletools.com.Constants;
+import gallery.simplemobiletools.com.MyViewPager;
 import gallery.simplemobiletools.com.R;
 import gallery.simplemobiletools.com.adapters.MyPagerAdapter;
 
@@ -24,7 +24,7 @@ public class ViewPagerActivity extends AppCompatActivity {
         setContentView(R.layout.activity_photo);
 
         pos = 0;
-        final ViewPager pager = (ViewPager) findViewById(R.id.view_pager);
+        final MyViewPager pager = (MyViewPager) findViewById(R.id.view_pager);
         final MyPagerAdapter adapter = new MyPagerAdapter(this, getPhotos());
         pager.setAdapter(adapter);
         pager.setCurrentItem(pos);

app/src/main/res/layout/activity_photo.xml

@@ -5,7 +5,7 @@
     android:layout_height="match_parent"
     android:background="@android:color/black">
 
-    <android.support.v4.view.ViewPager
+    <gallery.simplemobiletools.com.MyViewPager
         android:id="@+id/view_pager"
         android:layout_width="match_parent"
         android:layout_height="match_parent"/>