Question

我按照此页面上的指南对某项活动实施了拍照操作： https://developers.google.com/glass/develop/gdk/camera

我几乎已将该页面中的所有代码复制到我的活动中。图像捕获应该来自显示相机预览的我的活动。

唯一的变化是我正在处理相机快门按钮按下事件并在其上调用takePicture（）。

我的代码如下：

private void takePicture() {
     Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
     startActivityForResult(intent, TAKE_PICTURE_REQUEST);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == TAKE_PICTURE_REQUEST && resultCode == RESULT_OK) {
        Log.e("CAMERA", "photo ready");
        String picturePath = data.getStringExtra(
                CameraManager.EXTRA_PICTURE_FILE_PATH);
        processPictureWhenReady(picturePath);
    }

    super.onActivityResult(requestCode, resultCode, data);
}

private void processPictureWhenReady(final String picturePath) {
    final File pictureFile = new File(picturePath);

    if (pictureFile.exists()) {
        // The picture is ready; process it.
        Log.e("CAMERA", "photo ready2");
    } else {
        // The file does not exist yet. Before starting the file observer, you
        // can update your UI to let the user know that the application is
        // waiting for the picture (for example, by displaying the thumbnail
        // image and a progress indicator).
        Log.e("CAMERA", "photo ready3");
        final File parentDirectory = pictureFile.getParentFile();
        FileObserver observer = new FileObserver(parentDirectory.getPath(),
                FileObserver.CLOSE_WRITE | FileObserver.MOVED_TO) {
            // Protect against additional pending events after CLOSE_WRITE
            // or MOVED_TO is handled.
            private boolean isFileWritten;

            @Override
            public void onEvent(int event, String path) {
                if (!isFileWritten) {
                    // For safety, make sure that the file that was created in
                    // the directory is actually the one that we're expecting.
                    File affectedFile = new File(parentDirectory, path);
                    isFileWritten = affectedFile.equals(pictureFile);

                    if (isFileWritten) {
                        stopWatching();

                        // Now that the file is ready, recursively call
                        // processPictureWhenReady again (on the UI thread).
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                processPictureWhenReady(picturePath);
                            }
                        });
                    }
                }
            }
        };
        observer.startWatching();
    }
}

我在代码中添加了更多的调试日志，我注意到使用正确的requestCode输入了onActivityResult，但是resultCode = 0。

我所看到的是拍摄的照片，然后我可以看到“点击接受”屏幕（大概来自图像捕捉活动）。当我点击接受时，我可以听到敲击声，但没有任何反应。我可以多次点击，但仍然没有。然而，我可以向下滑动以停止图像捕获活动并恢复我的活动。

Answer 1

这是已提交的已知问题here。我们已在内部修复了该错误，但在下次OTA更新之前它无法到达您的设备。

接收拍照结果时，OnActivityResult的resultCode == 0

1 个答案: