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Android Build an Interactive Story App User Input Using ConstraintLayouts and ImageViews

Posted by Chido Vambe
Chido Vambe
4,638 Points

make sure you set to the right attribute... what am i doing wrong?

Set the top margin of the EditText to be "0dp".

activity_main.xml 
<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">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:scaleType="fitXY"
        app:srcCompat="@drawable/grumpy_cat"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

    <EditText
        android:id="@+id/captionField"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="Enter a caption"
        android:layout_marginTop="True"
        android:layout_marginTop="0dp"
        app:layout_constraintTop_toBottomOf="@+id/imageView"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

</android.support.constraint.ConstraintLayout>

2 Answers

Steve Hunter
Steve Hunter
57,712 Points

So, on task 2 we are asked to Next, we want to position the EditText directly below the ImageView. We do this by constraining its top to the bottom of the ImageView. Set the top margin of the EditText to be "0dp".

The EditText code starts out like this:

    <EditText
        android:id="@+id/captionField"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="Enter a caption"
        android:layout_marginTop=""
        app:layout_constraintTop_toBottomOf="@+id/imageView"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

This has a blank placeholder where we need to enter 0dp. Adding that gives us this:

    <EditText
        android:id="@+id/captionField"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="Enter a caption"
        android:layout_marginTop="0dp"
        app:layout_constraintTop_toBottomOf="@+id/imageView"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

This passes the task. I'll see if there's something else in your code that's causing the issue - but you don't need two marginTop attributes.

Steve.

Chido Vambe
Chido Vambe
4,638 Points

thanks Steve you are right

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi there,

You have an extra line in there. Remove:

android:layout_marginTop="True"

as the line below sets the margin to 0dp.

Steve.

Chido Vambe
Chido Vambe
4,638 Points

hey Steve, it is still saying "Bummer! Make sure you are setting the correct attribute in the EditText "0dp"!" after removing the line you instructed me to get rid off

Steve Hunter
Steve Hunter
57,712 Points

Whoops! Sorry! Let me have another look ...