CODEWITHSUNDEEP
javaandroidxml
André Silva
André Silva

Reputation: 121

Make infinite scrollable ImageViews

I'm making an app which allows a user to search the various countries. The user can make filtered searches (such as, for example, search only countries of a specific continent, etc...). All this info (Countries and their continents are stored in my Firebase Realtime Database). In my FilteredResults.java fragment I want to have a variable number of ImageViews (the number of the size of a List<String>). This sketch I drew might help you understand it better:

enter image description here

Each one of this rectangles are ImageViews. This is my XML (I just have a scrollview because I don't know how to create an "array" of ImageViews...)

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
    android:id="@+id/txtResultadosFiltrados"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:layout_marginStart="28dp"
    android:layout_marginTop="0dp"
    android:text="Resultados Filtrados"
    android:textColor="#323B45"
    android:textSize="24sp"
    tools:layout_editor_absoluteX="16dp"
    tools:layout_editor_absoluteY="28dp" />

    <ScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content">





    </ScrollView>
</RelativeLayout>

Upvotes: 0

Views: 123

Answers (2)

Jarosław Wiśniewski
Jarosław Wiśniewski

Reputation: 929

In order to solve your problem in an optimal way, you should use one of:

These views support so called adapters which map between a model (in your case: List<String>) and a list of items (in your case a list of ImageView's).

Here you have a complete example of a simple app which loads lists of posts from the Firebase Database: https://github.com/firebase/quickstart-android/tree/master/database

This example is based on RecyclerViews, you can find an a direct usage here: https://github.com/firebase/quickstart-android/blob/master/database/app/src/main/java/com/google/firebase/quickstart/database/fragment/PostListFragment.java

Upvotes: 2

Brijesh Joshi
Brijesh Joshi

Reputation: 1857

Use RecyclerView instead of ScrollView. As keeping array of ImageView and adding them in a ScrollView will create a explosive headache.

Upvotes: 1

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