Question

我试图实现一个播放默认通知声音的PlaySound（）方法。它确实很有效。这是代码：

    public void PlaySound()
    {
        MediaPlayer mediaPlayer = new MediaPlayer();

        var notification = RingtoneManager.GetDefaultUri(RingtoneType.Notification);
        mediaPlayer.SetDataSource(Application.Context, notification);
        Ringtone r = RingtoneManager.GetRingtone(Application.Context, notification);
        mediaPlayer.SetAudioStreamType(r.StreamType);
        mediaPlayer.Prepare();
        mediaPlayer.Start();
    }

然而，编译器告诉我不推荐使用r.StreamType。我查看了不同的地点，但无法找到新的＆＃39;获取StreamType的方法。谁知道？

Answer 1

API 21添加Traceback (most recent call last): File "C:/Users/dell/Desktop/crossword.py", line 6, in <module> b = pytesseract.image_to_string(a) File "C:\Users\dell\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pytesseract\pytesseract.py", line 122, in image_to_string config=config) File "C:\Users\dell\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pytesseract\pytesseract.py", line 46, in run_tesseract proc = subprocess.Popen(command, stderr=subprocess.PIPE) File "C:\Users\dell\AppData\Local\Programs\Python\Python36-32\lib\subprocess.py", line 707, in __init__ restore_signals, start_new_session) File "C:\Users\dell\AppData\Local\Programs\Python\Python36-32\lib\subprocess.py", line 990, in _execute_child startupinfo) PermissionError: [WinError 5] Access denied.以替换MediaPlayer.SetAudioStreamType，因此您可以执行运行时检查以确定要使用的API方法：

mediaPlayer.SetAudioStreamType

不推荐使用StreamType。如何获取流类型？

1 个答案: