Question 74908 in Flutter Question posted in
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How to set maximum size of image from image Picker in Flutter

this is my code

chooseImage() async {
    XFile? pickedFile = await ImagePicker().pickImage(
      source: ImageSource.gallery,
    );
    imagePath = await pickedFile!.readAsBytes();  
}
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2

Answers


  1. 0

    You can use imageQuality properties. The higher the quality, the larger the file size of the image.

    chooseImage() async {
  XFile? pickedFile = await ImagePicker().pickImage(
    source: ImageSource.gallery,
    imageQuality: 50, // Set the quality to 50%
  );
  imagePath = await pickedFile!.readAsBytes();  
}
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  2. 0

    If you want to completely block files over a certain size, you can check the size of the file using it’s length property, and handle the result accordingly

    chooseImage() async {
    var maxFileSizeInBytes = 2 * 1048576; // 2MB (You'll probably want this outside of this function so you can reuse the value elsewhere)

    XFile? pickedFile = await ImagePicker().pickImage(
      source: ImageSource.gallery,
    );
    var imagePath = await pickedFile!.readAsBytes();

    var fileSize = imagePath.length; // Get the file size in bytes
    if (fileSize <= maxFileSizeInBytes) {
        // File is the right size, upload/use it
    } else {
        // File is too large, ask user to upload a smaller file, or compress the file/image
    }
}
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