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Android Build an Interactive Story App Finishing the User Interface Introducing ScrollViews

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Posted by Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Problem with ScrollView in my StoryActivity layout

So I've seen that a number of people are having a problem with Android ScrollViews and I've just had a good couple of hours trying to get my head around what the issue here is with these views.

I've tried messing around with the Constraints in Text View but I just can't seem to get the image and text view to appear properly and Android Text View.

Is there some issue with how I've set up the rest of the Views? I confess, I've completed the course and thought I had this repo done and dusted so it's been a while since I added everything except the ScrollView.

Up to Date Repo:- https://github.com/jg-digital-media/android-interactive-storyapp

This is my xml file.

activity_story.xml 
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    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="match_parent"
    android:layout_height="match_parent"
    tools:context="uk.co.jonniegrieve.newinteractivestory.ui.StoryActivity">

    <Button
        android:id="@+id/choice1"
        android:layout_width="0dp"
        android:layout_height="48dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:text="Choice 1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/storyTextView"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintHorizontal_bias="0.0"
        />

    <Button
        android:id="@+id/choice2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:text="Choice 2"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/choice1"
        app:layout_constraintHorizontal_bias="0.0"/>

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginBottom="0dp"
        android:layout_marginEnd="0dp"
        android:layout_marginLeft="0dp"
        android:layout_marginRight="0dp"
        android:layout_marginStart="0dp"
        android:layout_marginTop="0dp"
        app:layout_constaintTop_toBottomOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/choice1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            tools:layout_editor_absoluteX="8dp"
            tools:layout_editor_absoluteY="40dp">

            <TextView
                android:id="@+id/storyTextView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginEnd="16dp"
                android:layout_marginLeft="16dp"
                android:layout_marginRight="16dp"
                android:layout_marginStart="16dp"
                android:layout_marginTop="12dp"
                android:lineSpacingExtra="8sp"
                android:text="@string/page0"
                android:textSize="16sp"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent"/>

            <ImageView
                android:id="@+id/storyImageView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:adjustViewBounds="true"
                android:scaleType="fitXY"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/page0"
                tools:src="@drawable/page0"/>
        </LinearLayout>


    </ScrollView>



</android.support.constraint.ConstraintLayout>
``

1 Answer

Tarek M.Tolba
Tarek M.Tolba
Courses Plus Student 3,613 Points

Constraining position is messed up in more than a place. I've fixed things for you

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    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="match_parent"
    android:layout_height="match_parent"
    tools:context="uk.co.jonniegrieve.newinteractivestory.ui.StoryActivity">

    <Button
        android:id="@+id/choice1"
        android:layout_width="0dp"
        android:layout_height="48dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:text="Choice 1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/choice2"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintHorizontal_bias="0.0"
        />

    <Button
        android:id="@+id/choice2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:text="Choice 2"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintRight_toRightOf="parent"

        app:layout_constraintHorizontal_bias="0.0"/>

    <ScrollView
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/choice1"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            tools:layout_editor_absoluteX="8dp"
            tools:layout_editor_absoluteY="40dp">

            <ImageView
                android:id="@+id/storyImageView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:adjustViewBounds="true"
                android:scaleType="fitXY"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/page0"
                tools:src="@drawable/page0"/>

            <TextView
                android:id="@+id/storyTextView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginEnd="16dp"
                android:layout_marginLeft="16dp"
                android:layout_marginRight="16dp"
                android:layout_marginStart="16dp"
                android:layout_marginTop="12dp"
                android:lineSpacingExtra="8sp"
                android:text="@string/page0"
                android:textSize="16sp"
                app:layout_constraintHorizontal_bias="0.0"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent"/>


        </LinearLayout>


    </ScrollView>



</android.support.constraint.ConstraintLayout>
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Thanks, This xml code has fixed things and I'm trying right now to work out exactly how.

Any pointers? I did notice for the first time when I went back to the project there were some Gradle build errors that I never saw previously so I'll start there.

At least now I know I can go forward. :)