小编fil*_*tto的帖子

我目前正在开发一个具有录音和播放功能的Android应用程序.我是处理音频的新手,我在编码和格式方面遇到了一些麻烦.

我能够在我的应用程序中录制和播放音频,但在导出时我无法重现音频.我找到的唯一方法是导出我的.pcm文件并使用Audacity进行转换.

这是我记录音频的代码是:

private Thread recordingThread 
private AudioRecord mRecorder;
private boolean isRecording = false;

private void startRecording() {

    mRecorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
            Constants.RECORDER_SAMPLERATE, Constants.RECORDER_CHANNELS,
            Constants.RECORDER_AUDIO_ENCODING, Constants.BufferElements2Rec * Constants.BytesPerElement);

    mRecorder.startRecording();
    isRecording = true;

    recordingThread = new Thread(new Runnable() {
        public void run() {
            writeAudioDataToFile();
        }
    }, "AudioRecorder Thread");
    recordingThread.start();
}

private void writeAudioDataToFile() {
    // Write the output audio in byte

    FileOutputStream os = null;
    try {
        os = new FileOutputStream(mFileName);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    while (isRecording) { …

我正在使用Python Selenium爬网多个网页，并且我以前知道某些网页没有所有元素。

我已经在等待页面加载并使用try / except查找元素（例如，类xyz），进入异常需要30秒。

try:
    xyz = driver.find_element_by_css_selector('div.xyz').text
except NoSuchElementException:
    print("\tError finding xyz...")

如何设置较小的超时（例如5秒）作为Selenium在运行异常并移至下一页之前查找元素的最大时间？

I am trying to schedule a live broadcast on youtube using the Python API. The broadcast is for a channel and my user has permissions to manage that channel. I need to use the "delegated_credentials" because is it inside a GSuite Organization with restrictions. To do so, I am using the following code:

# This OAuth 2.0 access scope allows for full read/write access to the
# authenticated user's account.
YOUTUBE_READ_WRITE_SCOPE = ["https://www.googleapis.com/auth/youtube", "https://www.googleapis.com/auth/youtube.upload", "https://www.googleapis.com/auth/youtube.force-ssl"]
YOUTUBE_API_SERVICE_NAME = "youtube"
YOUTUBE_API_VERSION = …

我有一个自定义TableViewController与自定义TableViewCell.我在故事板上创建了一个segue,从Cell到另一个ViewController来显示细节,但是从未调用prepareForSegue.我已经尝试过使用didSelectRowAtIndexPath但它没有被调用.我怀疑这可能是因为我动态创建了自定义单元格并且它们没有从分配给它们的故事板中获取segue,但我找不到这样做的方法.我的BarButtonItem中的"newSegue"被正常调用.

override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
    println("PREPARE FOR SEGUE")
    if segue.identifier == "newSegue" {
        println("PREPARE FOR NEW SEGUE")
    } else if segue.identifier == "detailSegue" {
        println("PREPARE FOR DETAIL SEGUE")
    }
}

override func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
    println("You selected cell!")
}

我怀疑在定义自定义单元格时可能会出错:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let CellIndentifier: NSString = "ListPrototypeCell"

    var cell : MyTableViewCell = tableView.dequeueReusableCellWithIdentifier(CellIndentifier) as MyTableViewCell

    var myClass: MyClass = self.myList.objectAtIndex(indexPath.row) as MyClass

    cell.setCell(author: myClass.author, message: myClass.message) …