Question

我正在尝试使用Camera2 Android上的CaptureCallback API将采集中的所有参数导出到texte文件中。我发现它们都包含在file中，但我只是不知道如何解析它们并将它们写入private CameraCaptureSession.CaptureCallback mCaptureCallback = new CameraCaptureSession.CaptureCallback() { private void process(CaptureResult result) { //parse and write as txt all available result keys and values } }。

this

这可能是一件容易的事。

Answer 1

这是一段完成工作的代码。我打开一个文件，解析所有键并将值写入其中：

File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
                                Environment.DIRECTORY_PICTURES), "MyApp");
File outputfile = new File(mediaStorageDir, "Camera_parameters.txt");
if (! mediaStorageDir.exists()){
    if (! mediaStorageDir.mkdirs()){
        return;
    }
}
try {
    FileOutputStream m_outputstream = new FileOutputStream(outputfile);
    OutputStreamWriter m_stream = new OutputStreamWriter(m_outputstream);
    List<CaptureResult.Key<?>> keys = result.getKeys();
    for (CaptureResult.Key<?> key : keys) {
        Log.d(TAG, key + " has value " + result.get(key));
        m_stream.write(key + "\t" + result.get(key) + "\n");
    }
    m_stream.close();
}
catch (IOException e)
{
    Log.e("Exception", "File write failed: " + e.toString());
}

将所有Camera2 CaptureResults写入文件

1 个答案: