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Volley NetworkImageView custom attributes in XML
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<resources> | |
<declare-styleable name="MoreNetworkImageView"> | |
<attr name="defaultImageResId" format="reference"/> | |
<attr name="errorImageResId" format="reference"/> | |
</declare-styleable> | |
</resources> |
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<?xml version="1.0" encoding="utf-8"?> | |
<android.support.v7.widget.CardView | |
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" | |
android:layout_width="wrap_content" | |
android:layout_height="fill_parent"> | |
<net.firetiger.more.MoreNetworkImageView | |
android:layout_width="64dp" | |
android:layout_height="64dp" | |
app:errorImageResId="@drawable/error_img" | |
app:defaultImageResId="@drawable/default_img" | |
tools:defaultImageResId="@drawable/editor_only_default_img"/> | |
<!-- | |
Note: The "tools:" prefix does NOT work for custom attributes in Android Studio 1.5 and | |
older at least, so in this example the defaultImageResId would show "default_img" in the | |
editor, not the "editor_only_default_img" drawable even though it should if it was | |
supported as an editor-only override correctly like standard Android properties. | |
--> | |
</android.support.v7.widget.CardView> |
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package net.firetiger.more; | |
import android.content.Context; | |
import android.content.res.TypedArray; | |
import android.support.annotation.NonNull; | |
import android.util.AttributeSet; | |
import com.android.volley.toolbox.NetworkImageView; | |
public class MoreNetworkImageView extends NetworkImageView { | |
public MoreNetworkImageView(@NonNull final Context context) { | |
super(context); | |
} | |
public MoreNetworkImageView(@NonNull final Context context, @NonNull final AttributeSet attrs) { | |
this(context, attrs, 0); | |
} | |
public MoreNetworkImageView(@NonNull final Context context, @NonNull final AttributeSet attrs, final int defStyle) { | |
super(context, attrs, defStyle); | |
final TypedArray attributes = context.obtainStyledAttributes(attrs, R.styleable.MoreNetworkImageView, defStyle, 0); | |
// load defaultImageResId from XML | |
int defaultImageResId = attributes.getResourceId(R.styleable.MoreNetworkImageView_defaultImageResId, 0); | |
if (defaultImageResId > 0) { | |
setDefaultImageResId(defaultImageResId); | |
} | |
// load errorImageResId from XML | |
int errorImageResId = attributes.getResourceId(R.styleable.MoreNetworkImageView_errorImageResId, 0); | |
if (errorImageResId > 0) { | |
setErrorImageResId(errorImageResId); | |
} | |
} | |
} |
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