问题描述
我正在关注这个适用于 Android 的原始 CameraX 示例 这里: https://developer.android.com/codelabs/camerax-getting-started#5 和这里: https://github.com/android/camera-samples/blob/main/CameraXBasic/app/src/main/java/com/android/example/cameraxbasic/fragments/CameraFragment.kt#L337
我想像示例中那样实例化我的预览:
val preview = Preview.Builder()
.build()
.also {
it.setSurfaceProvider(viewFinder.surfaceProvider)
}
但后来我意识到......好吧,真是一个惊喜 - viewFinder / androidx.camera.view.PreviewView 来自一个只有 alpha 版本的库
implementation 'androidx.camera:camera-view:1.0.0-alpha24'
(见这里) https://github.com/android/camera-samples/blob/main/CameraXBasic/app/build.gradle
我当然不想使用 alpha 版本! 所以我想好吧也许我可以实现我自己的SurfaceProvider
文档表明我可以这样做:
* class MyGlSurfaceProvider implements Preview.SurfaceProvider {
* // This executor must have also been used with Preview.setSurfaceProvider() to
* // ensure onSurfaceRequested() is called on our GL thread.
* Executor mGlExecutor;
*
* {@literal @}Override
* public void onSurfaceRequested(@NonNull SurfaceRequest request) {
* // If our GL thread/context is shutting down. Signal we will not fulfill
* // the request.
* if (isShuttingDown()) {
* request.willNotProvideSurface();
* return;
* }
*
* // Create the surface and attempt to provide it to the camera.
* Surface surface = resetGlInputSurface(request.getResolution());
*
* // Provide the surface and wait for the result to clean up the surface.
* request.provideSurface(surface,mGlExecutor,(result) -> {
* // In all cases (even errors),we can clean up the state. As an
* // optimization,we Could also optionally check for REQUEST_CANCELLED
* // since we may be able to reuse the surface on subsequent surface requests.
* closeGlInputSurface(surface);
* });
* }
* }
是的,但这个例子似乎有些不完整。而且我不知道如何正确实施... 那么对于如何实现我自己的 SurfaceProvider 有什么建议吗?
解决方法
暂无找到可以解决该程序问题的有效方法,小编努力寻找整理中!
如果你已经找到好的解决方法,欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@)