How to set Image resource to ImageView using DataBinding
AndroidXmlAndroid DatabindingAndroid Problem Overview
How can we use data binding in android to put image resource in an ImageView
?
<ImageView
android:id="@+id/is_synced"
android:src="@{model.pending ? @mipmap/pending: @mipmap/synced}"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
I want an image if pending is true and another image if pending is false. But it's showing error.How can I achieve this functionality?
Android Solutions
Solution 1 - Android
I tried this, and it works for me (buildToolsVersion: 24.0.1):
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="8dp"
android:scaleType="centerInside"
app:imageResource="@{item.avatarResId}"/>
just use app:imageResource
to replace android:src
, android:src="@{item.avatarResId}"
doesn't works else define a custom @BindAdapter("android:src")
for it.
but use app:imageResource
doesn't need define a @BindAdapter
additionally, because the ImageView has a method called setImageResource()
, when you use app:imageResource
, it will call setImageResource()
automatically.
Solution 2 - Android
The answer:
define:
@BindingAdapter({"android:src"})
public static void setImageViewResource(ImageView imageView, int resource) {
imageView.setImageResource(resource);
}
use:
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:scaleType="center"
android:src="@{viewModel.imageRes, default=@drawable/guide_1}"/>
Solution 3 - Android
set image like this,
<ImageView
android:layout_width="28dp"
android:layout_height="28dp"
android:src="@{model.isActive ? @drawable/white_activated_icon :@drawable/activated_icon}"
tools:src="@mipmap/white_activated_icon" />
Solution 4 - Android
If you would like to pass an argument into the method like an @IdRes
you can use
XML:
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<import type="<package_name>.R" />
</data>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:load_image="@{R.drawable.image}" />
</layout>
Code
@BindingAdapter("load_image")
public static void loadImage(ImageView view, @IdRes int imageId) {
//Logic
}
Solution 5 - Android
You can do this without doing anything programmatically if your data model contains the resource ID of the image.
Example:
<layout>
<data>
<import type="android.support.v4.content.ContextCompat" />
<variable
name="roomInfoItem"
type="com.example......model.RoomInfoModel" /> </data>
<RelativeLayout>
<ImageView
android:id="@+id/iv_room_info_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</RelativeLayout>
</layout>
Just add the following line to your imageView (I wasn't able to format the code when I was adding it there):
android:src="@{ContextCompat.getDrawable(context,roomInfoItem.resId)}"
where resId
contains R.drawable.your_image_name
Solution 6 - Android
Accorrding to this great article: Loading images with Data Binding and Picasso
there are two ways to do it:
- Using
@BindingAdapter
ObservableField
& custom Picasso Target
In Android Developers reference Data Binding Guide, you would find only the first one.
Please read both articles.
More informations:
- http://www.mutualmobile.com/posts/using-data-binding-api-in-recyclerview
- https://blog.stylingandroid.com/data-binding-part-3/
Hope it help.
Solution 7 - Android
More details Refer here Details Loading images with data binding and Picasso
public class ProfileViewModel {
// The URL will usually come from a model (i.e Profile)
static final String IMAGE_URL = "http://cdn.meme.am/instances/60677654.jpg";
public ObservableField<Drawable> profileImage;
private BindableFieldTarget bindableFieldTarget;
public ProfileViewModel(Context context) {
profileImage = new ObservableField<>();
// Picasso keeps a weak reference to the target so it needs to be stored in a field
bindableFieldTarget = new BindableFieldTarget(profileImage, context.getResources());
Picasso.with(context)
.load(IMAGE_URL)
.placeholder(R.drawable.placeholder)
.into(bindableFieldTarget);
}
public class BindableFieldTarget implements Target {
private ObservableField<Drawable> observableField;
private Resources resources;
public BindableFieldTarget(ObservableField<Drawable> observableField, Resources resources) {
this.observableField = observableField;
this.resources = resources;
}
@Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
observableField.set(new BitmapDrawable(resources, bitmap));
}
@Override
public void onBitmapFailed(Drawable errorDrawable) {
observableField.set(errorDrawable);
}
@Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
observableField.set(placeHolderDrawable);
}
}
}
Solution 8 - Android
The problem is with all the attributes which do on have setters with same name. e.g. android:x wont work if setX() method is not there in that view likewise if we had setSrc() method on ImageView your code would have worked without custom binding adapter
Solution 9 - Android
<ImageView ...
app:svg="@{@drawable/ic_car_placeholder}" />
then
@BindingAdapter({"app:svg"})
public static void setImageViewResource(ImageView imageView, Drawable resource) {
imageView.setBackgroundDrawable(resource);
}