Image Picker in Flutter

Image picker is one of the most used features in any application. Most famous applications including Facebook, Twitter, Instagram, Viber, Whatsapp e.t.c have an image picker that allows users to select the files from their device to use as a profile picture or share with friends.

The final app works as follows:

Video Tutorial

What is image_picker ?

Creating an image picker widget from scratch in Flutter would be tedious. Flutter consists of image_picker package for selecting images from device gallery or taking pictures from the camera.

The image_picker package exposes some helpful methods from the ImagePicker class it exports:

pickImage

XFile? image = await picker.pickImage(source:ImageSource.gallery);

The pickImage method opens the dialog to choose dialog and displays the mobile phone’s gallery to select the image. The source arg states where the image is to be picked from.

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Here, the source is ImageSource.gallery , so that the image is selected from the user’s phone gallery.

XFile? image = await picker.pickImage(source: ImageSource.camera);

When the source is set to ImageSource.camera , it opens the camera and selects the image snapped by the user.

pickVideo

XFile? image = await picker.pickVideo(source:ImageSource.gallery);

This method opens a choose dialog to pick a video from the phone’s gallery. You would use the pickVideo method when you want a video to be picked either from the gallery or from the phone’s video camera.

pickMultiImage

List<XFile>? images = await picker.pickMultiImage(source: ImageSource.gallery);

pickMultiImage enables the user to pick multiple images. The arg source: ImageSource.gallery allows us to pick the images from the phone’s gallery.

List<XFile>? photos = await picker.pickMultiImage(source: ImageSource.camera);

Let’s Dive in

Photo by Roberto Nickson on Unsplash

First, we need to add the image_picker package in the dependencies of pubsec.yaml file

dependencies:
  flutter:
    sdk: flutter
  image_picker: ^0.8.5+3

Then we click the button we are going to open the dialog of the gallery to select the image.

Then we set the picked image in the grid view as follows:

When we pressed the cross icon we delete the image.

void dltImages(data) {
    fileList.remove(data);
  }

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Conclusion

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Get full at:

GitHub - nbnD/image_picker_flutter: Pick Images from gallery in flutter