Question 34575 in React native Question posted in
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Load random image react native

I try to randomly load a gif from an array. I tried several ways to do it but none works. I either get an error message or the image just won’t appear.

Version 1 (result: image doesn’t appear):

var myPix = new Array("../assets/class/emojis/correct/clapping_hands.gif", "../assets/class/emojis/correct/beaming_face_with_smiling_eyes.gif","../assets/class/emojis/correct/confetti_ball.gif","../assets/class/emojis/correct/flexed_biceps.gif");

var randomNum = Math.floor(Math.random() * myPix.length);
var theImage= myPix[randomNum];


  return (
      <View>
        <Image
          style={styles.gifAnimation}
        source={theImage}
/>
</View>

Version 2 (result: "invalid call")

var myPix = new Array("../assets/class/emojis/correct/clapping_hands.gif", "../assets/class/emojis/correct/beaming_face_with_smiling_eyes.gif","../assets/class/emojis/correct/confetti_ball.gif","../assets/class/emojis/correct/flexed_biceps.gif");

var randomNum = Math.floor(Math.random() * myPix.length);
var theImage= myPix[randomNum];


  return (
      <View>
        <Image
          style={styles.gifAnimation}
        source={require(myPix[randomNum])}
/>
</View>

Version 3 (result: image won’t load):

  const [theImage, setTheImage] = useState();
React.useEffect(() => {
    var myPix = new Array(
      "../assets/class/emojis/correct/clapping_hands.gif",
      "../assets/class/emojis/correct/beaming_face_with_smiling_eyes.gif",
      "../assets/class/emojis/correct/confetti_ball.gif",
      "../assets/class/emojis/correct/flexed_biceps.gif",

    );
    var randomNum = Math.floor(Math.random() * myPix.length);
    var x = myPix[randomNum];
    setTheImage_Correct(x);

source={image_correct

Any thoughts?

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    I went back to this issue and found out why the images did not load. This is the original code. When using the code, the Gifs simply would not load:

    var myPix = new Array(
"../assets/class/emojis/correct/clapping_hands.gif", "../assets/class/emojis/correct/beaming_face_with_smiling_eyes.gif",
"../assets/class/emojis/correct/confetti_ball.gif",
"../assets/class/emojis/correct/flexed_biceps.gif");

var randomNum = Math.floor(Math.random() * myPix.length);
var theImage= myPix[randomNum];


  return (
      <View>
        <Image
          style={styles.gifAnimation}
        source={theImage}
/>
</View>

    I simply added "require()" for the image sources and it worked well:

    var myPix = new Array(
require("../assets/class/emojis/correct/clapping_hands.gif"), require("../assets/class/emojis/correct/beaming_face_with_smiling_eyes.gif"),
require("../assets/class/emojis/correct/confetti_ball.gif"),
require("../assets/class/emojis/correct/flexed_biceps.gif");

var randomNum = Math.floor(Math.random() * myPix.length);
var theImage= myPix[randomNum];


  return (
      <View>
        <Image
          style={styles.gifAnimation}
        source={theImage}
/>
</View>

  2. 0

    Make sure you have implemented the right environment to display GIF as explained below:

    For RN < 0.60

    By default the Gif images are not supported in android react native app. You need to set use Fresco to display the gif images. The code:

    Edit your android/app/build.gradle file and add the following code:

    dependencies: {

    ...

compile 'com.facebook.fresco:fresco:1.+'

// For animated GIF support
compile 'com.facebook.fresco:animated-gif:1.+'

// For WebP support, including animated WebP
compile 'com.facebook.fresco:animated-webp:1.+'
compile 'com.facebook.fresco:webpsupport:1.+'

    }

    then you need to bundle the app again, You can display the gif images in two ways like this.

    1-> <Image 
        source={require('./../images/load.gif')}  
        style={{width: 100, height: 100 }}
    />

2-> <Image 
        source={{uri: 'http://www.clicktorelease.com/code/gif/1.gif'}}  
        style={{width: 100, height:100 }} 
    />
    enter code here

    For RN >= 0.60

    implementation 'com.facebook.fresco:animated-gif:1.12.0' //instead of

implementation 'com.facebook.fresco:animated-gif:2.0.0'   //use

    As explained in this issue:
    How do I display an animated gif in React Native?

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