are android toast messages forced to wrap_content layout_width?

Question

I'm creating a custom view to use with android.widget.Toast.setView(), but no matter how I size the view, everything seems to be laid out using "wrap_content" as the layout width setting.

For example, whether I set the view's root layout (LinearLayout in my case) width to 'match_parent' or specify a static size such as "500dp" I get the same result at runtime ... the toast simply wraps the content.

My layout XML is:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/toast_container"
    android:orientation="horizontal"
    android:layout_width="500dp"
    android:layout_height="wrap_content"
    android:padding="16dp"
    android:background="@drawable/toast_bg">
    <ImageView
        android:id="@+id/toastIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:src="@drawable/toast_icon" />
    <TextView
        android:id="@+id/toastMsg"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="sample toast message"/>
</LinearLayout>

I suspect that Android (I'm running in an API 19 Kit-Kat platform) is forcing toast views to be 'wrap_content.' Is that so?

I'm sure someone is going to suggest I look at the source code in the AOSP. If I had the code handy, I would do that.

score 0 · Accepted Answer · answered Feb 01 '17 at 00:59

I am doing like this in my app and it works for defined width.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:id="@+id/toast_container"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="16dp"
>

<RelativeLayout
    android:layout_width="800dp"
    android:layout_height="wrap_content"
    android:background="@drawable/toast_bg">
<ImageView
    android:id="@+id/toastIcon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginEnd="16dp"
    android:src="@drawable/toast_icon" />
<TextView
    android:id="@+id/toastMsg"
    android:layout_toRightOf="@+id/toastIcon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="sample toast message"/>
</RelativeLayout>

I set the width of the RelativeLayout and it works for me. Try this.

Indeed, adding the extra nested RelativeLayout resolves the issue. Seems odd and excessive that it works this way, but it does. — alpartis, Feb 01 '17 at 05:27
I wonder if any nested layout would work, or does this require a nested RelativeLayout? — alpartis, Feb 01 '17 at 06:00

are android toast messages forced to wrap_content layout_width?

1 Answers1