CODEWITHSUNDEEP
androidandroid-viewpagertouch-event
Iam1414
Iam1414

Reputation: 149

OnTouch event is not called when Viewpager is empty

The Touch Event works fine when there is image in the ViewPager. However, the Touch event doesn't work when there is no image / empty folder.

My app loads the images to the ViewPager depending on the user selected folder.

Code:

xml:

    <test.com.ExtendedViewPager
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="514dp"
        android:background="@drawable/no_image"
        android:visibility="gone" />

As you can see, the ViewPager displays the default image when the folder/directory is empty. However, the Touch event doesn't work.

public void LoadViewPager() {
    ImagePathList = new ArrayList<String>();
    for (File file : listFile){
        ImagePathList.add(file.getAbsolutePath());
    }        
    mViewPager.setAdapter(new ViewPagerAdapter(MainActivity.this, ImagePathList));   //Custom ViewPager Adapter
    mViewPager.setCurrentItem(LastItemPos);

Adapter:

    @Override
    public View instantiateItem(final View view, int position) {
        final Zoom_ScaleImageView imageView = new Zoom_ScaleImageView(activity);
        imageLoader.loadImage(AdapterImageList.get(position),  new SimpleImageLoadingListener() {
            @Override
            public void onLoadingComplete(String path, View NoView, Bitmap bitmap) {
                imageView.setImageBitmap(bitmap);
                ((ViewPager) view).addView(imageView, 0);   
            }
        });                 
        return imageView;
    }

How can I make the Touch event works in ViewPager when there is no image?

Thank you

Edit: See my solution below...

Upvotes: 2

Views: 316

Answers (2)

Iam1414
Iam1414

Reputation: 149

I figured out a solution. It may help someone else. It may not be the best solution, but it is working for me.

Basically, I check to see if the arraylist is > 0 or not. If it is not > 0, then load the no image drawable.

public void LoadViewPager() {
    if(ImagePathList.size() > 0)       
        mViewPager.setAdapter(new ViewPagerAdapter(MainActivity.this, ImagePathList)); 
    else
      {
      //load the drawable
         ImagePathList.add("drawable")
         mViewPager.setAdapter(new ViewPagerAdapter(MainActivity.this, ImagePathList)); 
      }

}

Upvotes: 1

Kasun Dissanayake
Kasun Dissanayake

Reputation: 506

It might work if you change android:visibility="gone" to android:visibility="invisible" in the xml file. because if it is gone, it can not be touched.

Upvotes: 0

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