Demonstrates how to use the opencv_dart plugin.
flutter pub add opencv_dartordart pub add opencv_dartdart run opencv_dart:setup <platform> --arch <arch>
platform |
arch |
|---|---|
auto |
x64 |
android |
x86_64 arm64-v8a armeabi-v7a |
linux |
x64 |
windows |
x64 |
macos |
x64 arm64 |
ios |
x64 arm64 |
Note
for windows, linux, macos, and ios, libs with different arch will use same path, e.g.,
for windows it will always be opencv_dart/windows/opencv_dart.dll
(note it's not your app directory but the opencv_dart directory),
so if you want to switch between different architectures,
you have to rerun dart run opencv_dart:setup <platform> --arch <arch> with correct arch, this
is the limitation of Dart/Flutter.
for android, run with different arch will download the corresponding libopencv_dart.so to opencv_dart/android/src/main/jniLibs/<arch>, so if you want to exclude some arch, just delete the target arch folder
- run app as normal and the dynamic library will be copied automatically
Warning
v2.x doesn't need to download the prebuild binaries but requires Native Assets feature, which is still experimental, see more here: dart-lang/sdk#50565
conan and cmake are required
To use v2.x:
for pure dart:
- take a look at https://pub.dev/packages/opencv_dart/versions and find the latest version, e.g.,
2.0.0-dev.2 - add to your
pubspec.yaml dart --enable-experiment=native-assets run <path-to-your-code>
for flutter:
- take a look at https://pub.dev/packages/opencv_dart/versions and find the latest version, e.g.,
2.0.0-dev.2 - add to your
pubspec.yaml flutter config --enable-native-assetsflutter run