Set layout_margin using databinding

Question

I use data building in my application and I'm new to this. I can't change the layout_marginLeft code. I have seen many examples but they do not work for me. Here is my code in the model.

@BindingAdapter("android:layout_marginLeft")
public static void setLayoutMarginLeft(View view, float marginLeft) {
    if (view.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
        ViewGroup.MarginLayoutParams p = (ViewGroup.MarginLayoutParams) view.getLayoutParams();
        p.setMargins((int) marginLeft, p.topMargin, p.rightMargin, p.bottomMargin);
        view.requestLayout();
    }
}

xml file

<data>
    <import type="android.view.View" />
    <variable
        name="viewModel"
        type="com.aofled.test.window.activity.sleep.SleepActivityViewModel" />
</data>

<TextView
            android:id="@+id/tv_sleep"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Tap to screen....."
            android:textColor="@color/selector_inactive"
            android:textSize="48sp"
            android:layout_marginLeft="@{viewModel.layout_marginLeft}"
            />

I cannot build the project. I wrote:

****/ data binding error ****msg:Could not find accessor com.aofled.test.window.activity.sleep.SleepActivityViewModel.layout_marginLeft file:C:\!work\kohote_ch_android 4\kohotehc_android\client\src\main\res\layout\activity_sleep.xml loc:26:45 - 26:71 ****\ data binding error ****

What should I change to make it work?

Answer 1

Well, I found a solution for my problem. I hope someone will help.

My .xml

<data>
    <import type="android.view.View" />
    <variable
        name="viewModel"
        type="com.kohote.homecare.window.activity.sleep.SleepActivityViewModel" />
</data>

<TextView
            android:id="@+id/tv_sleep"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/sleep_mode_text"
            android:textColor="@color/selector_inactive"
            android:textSize="48sp"
            app:layout_marginLeft="@{viewModel.marginLeft}"
            />

My SleepActivityViewModel

public ObservableField<Float> marginLeft = new ObservableField<>();


@BindingAdapter({"bind:layout_marginLeft"})
public static void setLayoutMarginLeft(TextView view, float marginLeft) {
    if (view.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
        ViewGroup.MarginLayoutParams p = (ViewGroup.MarginLayoutParams) view.getLayoutParams();
        p.setMargins((int) marginLeft, p.topMargin, p.rightMargin, p.bottomMargin);
        view.requestLayout();
    }
}

and my Setter

marginLeft.set(100f, 900f);

This is a working version.