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Editing designs

Edit an existing design with the Android SDK.

After a user creates a design, they may want to edit that design at a later point in time. To enable this, Canva provides your app with the ID of the user's design. You can use this ID to re-open the design in the Canva editor.

This part of the tutorial series explains how to open an existing design with the Android SDK.

Step 1: Set up the UI

Open the activity_main.xml file.
Switch to the Code or Split view.

Add a Button widget beneath the existing Button widget:

<Button
    android:id="@+id/edit_design_button"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:enabled="false"
    android:layout_marginBottom="32dp"
    android:text="Edit design" />

markup

This button should be disabled by default.

Step 2: Open the Canva editor

In the MainActivity class, create a property for the Edit design button:

private lateinit var editDesignButton: Button

kotlin

Then, in the onCreate function, create an on-click listener that opens the user's design in the Canva editor:

editDesignButton = findViewById<Button>(R.id.edit_design_button)
editDesignButton.setOnClickListener {
   val launcher = CanvaEditor.Launcher
                     .builder("API KEY GOES HERE")
                     .setDesignId(publishData.designId)

   disposable = launcher.launchActivityForResult(this, 132)
}

kotlin

This listener is almost identical to the listener for the Create design button. The only difference is that it uses the setDesignId method instead of setDesignType. This method accepts the ID of a design. Canva uses this ID to open the existing design in the editor.

Step 3: Enable the "Edit design" button

In the onActivityResult function, enable the button after the user publishes their design:

if (requestCode == 132 && resultCode == RESULT_OK) {
    publishData = data.getParcelableExtra<PublishData>(CanvaEditor.KEY_PUBLISH_DATA)

    if (publishData == null) {
        return
    }

    val publishedImageView = findViewById<ImageView>(R.id.published_image_view)
    Picasso.get().load(publishData?.publishUrl).into(publishedImageView)

    editDesignButton.isEnabled = true
}

kotlin

Example

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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=".MainActivity">

    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="32dp"
        android:orientation="vertical" >
        <Button
            android:id="@+id/create_design_button"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Create design" />
        <Button
            android:id="@+id/edit_design_button"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:enabled="false"
            android:layout_marginBottom="32dp"
            android:text="Edit design" />
        <ImageView
            android:id="@+id/published_image_view"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_marginBottom="16dp" />
    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

markup

MainActivity.kt

package com.example.myapplication

import android.content.Intent
import android.os.Bundle
import android.widget.Button
import android.widget.ImageView
import androidx.appcompat.app.AppCompatActivity
import com.canva.button.builder.CanvaEditor
import com.canva.button.callbacks.Disposable
import com.canva.button.callbacks.PublishData
import com.squareup.picasso.Picasso

class MainActivity : AppCompatActivity() {
    private var disposable: Disposable? = null
    private var publishData: PublishData? = null
    private lateinit var editDesignButton: Button

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val createDesignButton = findViewById<Button>(R.id.create_design_button)
        createDesignButton.setOnClickListener {
            val launcher = CanvaEditor.Launcher
                .builder("API KEY GOES HERE")
                .setDesignType("Banner")

            disposable = launcher.launchActivityForResult(this, 132)
        }

        editDesignButton = findViewById<Button>(R.id.edit_design_button)
        editDesignButton.setOnClickListener {
            val launcher = CanvaEditor.Launcher
                .builder("API KEY GOES HERE")
                .setDesignId(publishData?.designId)

            disposable = launcher.launchActivityForResult(this, 132)
        }
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)

        if (data == null) {
            return
        }

        if (requestCode == 132 && resultCode == RESULT_OK) {
            publishData = data.getParcelableExtra<PublishData>(CanvaEditor.KEY_PUBLISH_DATA)

            if (publishData == null) {
                return
            }

            val publishedImageView = findViewById<ImageView>(R.id.published_image_view)
            Picasso.get().load(publishData?.publishUrl).into(publishedImageView)

            editDesignButton.isEnabled = true
        }
    }

    override fun onDestroy() {
        super.onDestroy()
        disposable?.dispose()
    }
}

kotlin