Solution 1 :
When loading image using Picasso use: setIndicatorsEnabled(false)
picasso.load(videoList.get(position).getVideoThumbNail())
.networkPolicy(NetworkPolicy.OFFLINE)
.setIndicatorsEnabled(false)
.into(...);
The colors indicate this:
- Green: Image is fetched from memory
- Blue: Image is fetched from disk
- Red: Image is fetched from network
Problem :
I have 2 recycler views and a view pager in a fragment.
Everything else works fine but both recycler view items are showing a random mark on the upper left corner of every items. And same thing is happening for the view pager items.
This fragment is in a fragment activity and view pager is using pager adapter. And I am using Picasso library to load images on the items and also using network policy to cache the images in disk.
recycler view items appearing like this
view pager items appearing like this
Recycler View adapter
public class CourseListAdapter extends RecyclerView.Adapter<CourseListAdapter.CourseListViewHolder> {
public static final int HOME_PAGE = 1;
public static final int DISPLAY_COURSE = 2;
private Picasso mPicasso;
private List<DisplayCourse> courseList;
private static final String TAG = "CourseListAdapter";
private OnItemClickListener mListener;
public interface OnItemClickListener {
void onItemClick(int position, View view);
}
private String mSender;
public void setOnItemClickListener(OnItemClickListener listener) {
mListener = listener;
}
public CourseListAdapter(List<DisplayCourse> courseList, String sender) {
this.courseList = courseList;
this.mSender = sender;
mPicasso = Picasso.get();
}
@NonNull
@Override
public CourseListViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
switch (viewType) {
case 1:
View view1 = inflater.inflate(R.layout.recom_course_home_layout, parent, false);
return new CourseListViewHolder(view1, mListener);
case 2:
View view2 = inflater.inflate(R.layout.display_course_layout, parent, false);
return new CourseListViewHolder(view2, mListener);
default:
View view3 = inflater.inflate(R.layout.section_video_item_layout, parent, false);
return new CourseListViewHolder(view3, mListener);
}
}
@Override
public void onBindViewHolder(@NonNull CourseListViewHolder holder, int position) {
holder.title.setText(courseList.get(position).getCourseTitle());
mPicasso.load(courseList.get(position).getThumbnailURL())
.networkPolicy(NetworkPolicy.OFFLINE)
.into(holder.thumbnail, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError(Exception e) {
mPicasso.load(courseList.get(position).getThumbnailURL())
.error(R.drawable.ofklogo)
.into(holder.thumbnail, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError(Exception e) {
}
});
}
});
}
@Override
public int getItemCount() {
return courseList.size();
}
public static class CourseListViewHolder extends RecyclerView.ViewHolder {
ImageView thumbnail;
TextView title;
public CourseListViewHolder(@NonNull View itemView, final OnItemClickListener listener) {
super(itemView);
title = itemView.findViewById(R.id.courseTitle);
thumbnail = itemView.findViewById(R.id.courseThumbNailImageView);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int position = getAdapterPosition();
if (listener != null) {
if (position != RecyclerView.NO_POSITION) {
listener.onItemClick(position, view);
}
}
}
});
}
}
@Override
public int getItemViewType(int position) {
if (mSender.equals("home_page")) {
return HOME_PAGE;
} else if (mSender.equals("displayCourse")) {
return DISPLAY_COURSE;
}
return -1;
}
}
View pager adapter
public class VideoSliderAdapter extends PagerAdapter {
private boolean doNotifyDataSetChangedOnce = false;
private static final String TAG = "VideoSliderAdapter";
private YouTubePlayerView youTubePlayerView;
private View gradientView;
private ImageView thumbNail;
private LinearLayout layout;
private Picasso picasso;
private List<Video> videoList;
private Context mContext;
private Lifecycle mLifeCycle;
public VideoSliderAdapter(List<Video> videoList, Context context, Lifecycle lifecycle) {
this.videoList = videoList;
this.mContext = context;
this.mLifeCycle = lifecycle;
doNotifyDataSetChangedOnce = true;
picasso = Picasso.get();
}
@Override
public int getCount() {
if (doNotifyDataSetChangedOnce) {
doNotifyDataSetChangedOnce = false;
notifyDataSetChanged();
}
return videoList.size();
}
@Override
public int getItemPosition(@NonNull Object object) {
return POSITION_NONE;
}
@Override
public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
return (view == (CardView) object);
}
@NonNull
@Override
public Object instantiateItem(@NonNull ViewGroup container, int position) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.video_paly_layout, container, false);
TextView title = view.findViewById(R.id.videoTitle);
title.setText(videoList.get(position).getVideoTitle());
gradientView = view.findViewById(R.id.gradientView);
thumbNail = view.findViewById(R.id.videoThumbNail);
picasso.load(videoList.get(position).getVideoThumbNail())
.networkPolicy(NetworkPolicy.OFFLINE)
.into(thumbNail, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError(Exception e) {
picasso.load(videoList.get(position).getVideoThumbNail())
.error(R.drawable.ofklogo)
.into(thumbNail, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError(Exception e) {
}
});
}
});
layout = view.findViewById(R.id.videoPlayLayout);
youTubePlayerView = view.findViewById(R.id.youtube_player_view);
mLifeCycle.addObserver(youTubePlayerView);
new AddListener(youTubePlayerView, position).execute();
container.addView(view);
return view;
}
@Override
public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
container.removeView((CardView) object);
}
Recycler view holder layout
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns_android="http://schemas.android.com/apk/res/android"
xmlns_app="http://schemas.android.com/apk/res-auto"
android_layout_width="150dp"
android_layout_height="200dp"
android_layout_marginStart="8dp"
android_layout_marginEnd="8dp"
android_layout_marginBottom="8dp"
android_clickable="true"
android_focusable="true"
android_foreground="?android:attr/selectableItemBackground"
app_cardCornerRadius="8dp">
<RelativeLayout
android_layout_width="match_parent"
android_layout_height="match_parent">
<ImageView
android_id="@+id/courseThumbNailImageView"
android_layout_width="match_parent"
android_layout_height="130dp"
android_layout_alignParentTop="true"
android_scaleType="fitXY"
android_src="@drawable/art_thumb" />
<RelativeLayout
android_layout_width="match_parent"
android_layout_height="match_parent"
android_layout_below="@id/courseThumbNailImageView">
<TextView
android_id="@+id/courseTitle"
android_layout_width="match_parent"
android_layout_height="wrap_content"
android_layout_centerInParent="true"
android_maxLines="2"
android_text="Course title"
android_textAlignment="center"
android_textColor="@android:color/black"
android_textStyle="bold" />
</RelativeLayout>
</RelativeLayout>
</androidx.cardview.widget.CardView>
view pager layout
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns_android="http://schemas.android.com/apk/res/android"
xmlns_app="http://schemas.android.com/apk/res-auto"
android_layout_width="match_parent"
android_layout_height="200dp"
app_cardCornerRadius="8dp">
<RelativeLayout
android_layout_width="match_parent"
android_layout_height="match_parent">
<com.pierfrancescosoffritti.androidyoutubeplayer.core.player.views.YouTubePlayerView
android_id="@+id/youtube_player_view"
android_layout_width="match_parent"
android_layout_height="wrap_content"
app_autoPlay="false" />
<ImageView
android_id="@+id/videoThumbNail"
android_layout_width="match_parent"
android_layout_height="match_parent"
android_scaleType="fitXY" />
<View
android_id="@+id/gradientView"
android_layout_width="match_parent"
android_layout_height="match_parent"
android_background="@drawable/gradient_drawable" />
<LinearLayout
android_id="@+id/videoPlayLayout"
android_layout_width="match_parent"
android_layout_height="wrap_content"
android_layout_alignParentBottom="true"
android_background="?attr/selectableItemBackground"
android_clickable="true"
android_focusable="true"
android_gravity="center_vertical"
android_orientation="horizontal"
android_padding="16dp">
<ImageView
android_layout_width="48dp"
android_layout_height="48dp"
android_padding="8dp"
android_src="@drawable/play_button" />
<TextView
android_id="@+id/videoTitle"
android_layout_width="wrap_content"
android_layout_height="wrap_content"
android_ellipsize="end"
android_maxLines="2"
android_text="Course title"
android_textColor="@android:color/white"
android_textStyle="bold" />
</LinearLayout>
</RelativeLayout>
</androidx.cardview.widget.CardView>
Comments
Comment posted by Saurav Kumar
post some codes regarding your RecyclerView and ViewPager
READ [ANSWERED] Android app error android.view.InflateException. With Jetpack Navigation Component
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Comment posted by Thirumalai
Do you used card view for each item?
Comment posted by Niaz Sagor
yes I am using card view for each item
Comment posted by Mihodi Lushan
check your cardview background color and margin padding. I think these are coming from that XML. please add your xmls here for reference.
