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Why don't Lottie Animations work in Xamarin.Android? RRS feed

  • Question

  • User367180 posted

    In the Lottie docs, they say to use this to play your animation:

    <com.airbnb.lottie.LottieAnimationView
        android:id="@+id/animation_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:lottie_fileName="hello-world.json"
        app:lottie_loop="true"
        app:lottie_autoPlay="true" />
    

    In Android design, it says

    'app' is an undeclared prefix.

    Does anyone know why this is happening?

    Thank you!

    Tuesday, July 17, 2018 7:36 PM

Answers

  • User355640 posted

    Hi @ClovyClov

    As I have said, you need add the namespace, you added it at a wrong line, below is my layout:

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout 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">
    
      <com.airbnb.lottie.LottieAnimationView
        android:id="@+id/animation_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:lottie_fileName="notification_bell.json"
        app:lottie_loop="true"
        app:lottie_autoPlay="true" />
    </RelativeLayout>
    

    Binary XML file line #1: Binary XML file line #1: Error inflating class com.airbnb.lottie.LottieAnimationView

    Please clean and rebuild, or delete the bin and obj folder to restart your VS, it should work.

    • Marked as answer by Anonymous Thursday, June 3, 2021 12:00 AM
    Thursday, July 19, 2018 12:49 AM

All replies

  • User355640 posted

    Hi @ClovyClov

    You need add namespace for 'app', read this:

    You can find this:

    xmlns:app="http://schemas.android.com/apk/res-auto"

    Wednesday, July 18, 2018 9:10 AM
  • User367180 posted

    @robbit

    Thank you so much for the response I GREATLY appreciate it!!! I don't know why this isn't specified anywhere on here (to my knowledge).

    But this brings another issue. When I try building, I get an exception that says:

    Binary XML file line #1: Binary XML file line #1: Error inflating class com.airbnb.lottie.LottieAnimationView

    I've tried diagnosing why this could be happening but I honestly have no idea as there's no code used other than what it says in the docs. Any idea why this may be happening? Also attaching my xml below.

    XML:

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:minWidth="25px"
        android:minHeight="25px"
        android:gravity="center"
        android:id="@+id/linearLayout1">
        <com.airbnb.lottie.LottieAnimationView
            android:id="@+id/animation_view"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:lottie_fileName="cycle_animation.json"
            app:lottie_loop="true"
            app:lottie_autoPlay="true" />
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/slideshowIV"
            android:src="@drawable/viewslideshow"
            android:scaleType="centerCrop" />
        <LinearLayout
            android:id="@+id/idleTextLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:minWidth="25px"
            android:minHeight="25px"
            android:orientation="vertical"
            android:layout_weight="1"
            android:gravity="bottom">
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_gravity="center"
                android:gravity="center"
                android:orientation="vertical"
                android:layout_weight="3">
                <ImageView
                    android:layout_width="100dp"
                    android:layout_height="105.2dp"
                    android:src="@drawable/beehexagonlogo"
                    android:layout_gravity="center"
                    android:scaleType="fitCenter" />
                <TextView
                    android:id="@+id/loadingTxt"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textColor="@android:color/white"
                    android:text="Loading..." />
            </LinearLayout>
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Engage"
                android:fontFamily="sans-serif-light"
                android:textColor="@android:color/white"
                android:textAlignment="viewStart"
                android:id="@+id/textView1"
                android:textStyle="normal"
                android:textSize="36sp"
                android:paddingBottom="6dp" />
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Stay true to your brand. Engage with your customers,\non your terms, on your grounds."
                android:id="@+id/textView2"
                android:layout_below="@id/textView1"
                android:textColor="@android:color/white"
                android:lineSpacingExtra="4dp"
                android:textSize="12sp" />
        </LinearLayout>
    </LinearLayout>
    
    Wednesday, July 18, 2018 1:32 PM
  • User355640 posted

    Hi @ClovyClov

    As I have said, you need add the namespace, you added it at a wrong line, below is my layout:

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout 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">
    
      <com.airbnb.lottie.LottieAnimationView
        android:id="@+id/animation_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:lottie_fileName="notification_bell.json"
        app:lottie_loop="true"
        app:lottie_autoPlay="true" />
    </RelativeLayout>
    

    Binary XML file line #1: Binary XML file line #1: Error inflating class com.airbnb.lottie.LottieAnimationView

    Please clean and rebuild, or delete the bin and obj folder to restart your VS, it should work.

    • Marked as answer by Anonymous Thursday, June 3, 2021 12:00 AM
    Thursday, July 19, 2018 12:49 AM
  • User367180 posted

    Hey @robbit ,

    Firstly, thanks so much for your response once again.

    The code I added was AFTER me editing, but I did do it exactly as you originally said to and it gave me that Binary error for some reason. I had tried cleaning, rebuilding, restarting, and more but nothing worked.

    What's even more weird is that I LITERALLY did nothing but just uncommented my code in the old file to try again and screenshot the error for you, but now it's working! This is extremely strange...

    Regardless, I can't thank you enough for your help as I've been struggling with Lottie for a week, until now. Very appreciative! Have a good one!

    Thursday, July 19, 2018 2:37 AM