acquireNextImage 与 acquireLatestImage 之间的区别答案

【问题标题】：Difference between acquireNextImage Vs acquireLatestImageacquireNextImage 与 acquireLatestImage 之间的区别
【发布时间】：2018-04-08 18:15:36
【问题描述】：

我正在使用 Camera2 API 来连续拍照，它工作正常，在这里，我可以使用以下代码保存捕获的图像：

ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() {
                @Override
                public void onImageAvailable(ImageReader reader) {
                    Image image = null;
                    try {

//                        image = reader.acquireLatestImage();
                        image = reader.acquireNextImage();
                        ByteBuffer buffer = image.getPlanes()[0].getBuffer();
                        byte[] bytes = new byte[buffer.capacity()];
                        buffer.get(bytes);
                        save(bytes);
                    } catch (FileNotFoundException e) {
                        logFile.writeCrashLog(TAG + ": " + e.toString());
                        hideProgressDialog();
                    } catch (IOException e) {
                        logFile.writeCrashLog(TAG + ": " + e.toString());
                        hideProgressDialog();
                    } catch (Exception e) {
                        logFile.writeCrashLog(TAG + ": " + e.toString());
                        hideProgressDialog();
                    } finally {
                        if (image != null) {
                            image.close();
                        }
                    }
                }

                private void save(byte[] bytes) throws IOException {
                    OutputStream output = null;
                    try {
                        output = new FileOutputStream(AndroidCameraApiActivity.this.file);
                        output.write(bytes);
                    } catch (Exception e) {
                        logFile.writeCrashLog(TAG + ": " + e.toString());
                        hideProgressDialog();
                    } finally {
                        if (null != output) {
                            output.close();
                        }
                    }
                }
            };

这里我想知道通过acquireLatestImage或acquireNextImage？获取图像的最佳情况是哪种情况适合获取连续图像。

【问题讨论】：

标签： android android-camera2 image-reader

【解决方案1】：

aquireNextImage - 将从ImageReaderQueue获取下一张图片

aquireLatestImage - 甚至会通过删除 Queue 中的旧图像来从 ImageReader 队列中获取下一张图像。

供参考：Image Reader API

【讨论】：