In app/build.gradle
:
dataBinding {
enabled = true
}
kapt "com.android.databinding:compiler:3.0.1"
In layout I have two images.
I want to set width only for first image.
Here is the XML layout:
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<data>
<import type="com.myproject.android.customer.util.GuiUtil" />
</data>
<ImageView
android:id="@+id/imageViewPhoto"
android:layout_width="@{GuiUtil.getTileWidthDpInScreen(context), default=@dimen/preview_image_height}"
android:layout_height="@dimen/preview_image_height"/>
<ImageView
android:id="@+id/imageViewFavorite"
android:layout_width="28dp"
android:layout_height="28dp"/>
</layout>
Here is the adapter's code:
@BindingAdapter("layout_width")
public static void setLayoutWidth(View view, int width) {
ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
layoutParams.width = width;
view.setLayoutParams(layoutParams);
}
Here is the method GuiUtil.getTileWidthDpInScreen
:
public class GuiUtil {
public static int getTileWidthDpInScreen(Context context) {
// some logic that return int value
}
But I get this error:
:app:transformDataBindingWithDataBindingMergeArtifactsForDebug UP-TO-DATE
:app:kaptDebugKotlin
e: java.lang.IllegalStateException: failed to analyze: android.databinding.tool.util.LoggedErrorException: Found data binding errors.
****/ data binding error ****msg:Cannot find the setter for attribute 'android:layout_width' with parameter type int on android.widget.ImageView.
file:myproject\app\src\main\res\layout\preview_offer_item.xml
loc:26:36 - 26:74
****\ data binding error ****
at org.jetbrains.kotlin.analyzer.AnalysisResult.throwIfError(AnalysisResult.kt:57)
Unfortunately, this syntax doesn't support with Android Databinding by default. You can use @BindingAdapter instead, here is full code below (Kotlin):
@BindingAdapter("layoutWidth")
fun setLayoutWidth(layout: ViewGroup, dimen: Float) {
val layoutParams = layout.layoutParams
layoutParams.width = dimen.toInt()
layout.layoutParams = layoutParams
}
in your XML layout file use "app:layoutWidth", you can use it even with additional syntax, e.g.:
android:layout_width="match_parent" //required
android:layout_height="@dimen/dp_102" //required
app:layoutWidth="@{variable.predict ? @dimen/dp_86 : @dimen/dp_102}"
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