I am using FastAdapter in my android project.
This is how I am using it:
public class HRequest extends AbstractItem<HRequest, HRequest.ViewHolder> {
public String imageURL;
public HRequest() {
}
public HRequest(String imageURL) {
this.imageURL = imageURL;
}
// Fast Adapter methods
@Override
public int getType() {
return R.id.recycler_view;
}
@Override
public int getLayoutRes() {
return R.layout.h_request_list_row;
}
@Override
public void bindView(ViewHolder holder) {
super.bindView(holder);
holder.imageURL.setText(imageURL);
}
// Manually create the ViewHolder class
protected static class ViewHolder extends RecyclerView.ViewHolder {
TextView imageURL;
public ViewHolder(View itemView) {
super(itemView);
imageURL = (TextView)itemView.findViewById(R.id.imageURL);
if (!imageURL.getText().toString().isEmpty()) {
Toast.makeText(itemView.getContext(), imageUID.getText().toString(), Toast.LENGTH_SHORT).show();
if (imageURL.getText().toString().startsWith("https://firebasestorage.googleapis.com/") || imageURL.getText().toString().startsWith("content://")) {
Picasso.with(itemView.getContext())
.load(imageURL.getText().toString())
.into(homelessImage);
} else {
Toast.makeText(itemView.getContext(), "some problem", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(itemView.getContext(), "no imageUID found", Toast.LENGTH_SHORT).show();
}
}
}
}
Here is R.layout.h_request_list_row
:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="match_parent"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
xmlns:tools="http://schemas.android.com/tools">
<TextView
android:id="@+id/imageURL"
android:text="imageURL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
The problem here is that imageURL
is not getting set as the imageURL
retrieved from the database but as imageURL
defined in the layout file and thus no image is getting downloaded. I followed this gist: https://gist.github.com/puf/f49a1b07e92952b44f2dc36d9af04e3c
I am sure that String imageURL
here:
public HRequest(String imageURL) {
this.imageURL = imageURL;
}
has successfully fetched the urls retrieved from Firebase database.
Please let me know what's going wrong here.
Sorry for bad formatting of the question. I'm still a beginner here.
The problem is that you try to load the image in the ViewHolder
.
At the time when the ViewHolder
is created there was not yet an ImageUrl
set via the bindView
method, as this will be called after the ViewHolder
was created.
So you have to move the image loading logic to the bindView
method. The ViewHolder
is just there for the RecyclerView
to efficiently cache the views, have listeners defined and everything which keeps "fixed" over all the view's which are used in the RecyclerView.
To get your code working you have to change it as following:
public class HRequest extends AbstractItem < HRequest, HRequest.ViewHolder > {
public String imageURL;
public HRequest() {}
public HRequest(String imageURL) {
this.imageURL = imageURL;
}
// Fast Adapter methods
@Override
public int getType() {
return R.id.recycler_view;
}
@Override
public int getLayoutRes() {
return R.layout.h_request_list_row;
}
@Override
public void bindView(ViewHolder holder) {
super.bindView(holder);
holder.imageURL.setText(imageURL);
if (!imageURL.isEmpty()) {
Toast.makeText(holder.itemView.getContext(), imageURL, Toast.LENGTH_SHORT).show();
if (imageURL.startsWith("https://firebasestorage.googleapis.com/") || imageURL.startsWith("content://")) {
Picasso.with(holder.itemView.getContext()).cancelRequest(holder.myImageView);
Picasso.with(holder.itemView.getContext()).load(imageURL).into(holder.myImageView);
} else {
Toast.makeText(holder.itemView.getContext(), "some problem", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(holder.itemView.getContext(), "no imageUID found", Toast.LENGTH_SHORT).show();
}
}
// Manually create the ViewHolder class
protected static class ViewHolder extends RecyclerView.ViewHolder {
TextView imageURL;
ImageView myImageView;
public ViewHolder(View itemView) {
super(itemView);
imageURL = (TextView) itemView.findViewById(R.id.imageURL);
myImageView = (ImageView) itemView.findViewById(R.id.myImageView);
}
}
}
So basically the RecyclerView
will call bindView
each time the item will come visible in the list and the data has to be applied to it. Also add the ImageView
itself to the ViewHolder
and you should also cancel the request on the ImageView
with picasso first before a new image is getting applied (I added this code snippet too)