要解决这个问题，可以尝试使用 MediaCodec 和 MediaExtractor 对媒体进行自定义缓冲以获取更准确的缓冲百分比值。以下是代码示例：

// 初始化 MediaExtractor 和 MediaCodec 对象 MediaExtractor extractor = new MediaExtractor(); extractor.setDataSource(filePath); for (int i = 0; i < extractor.getTrackCount(); i++) { MediaFormat format = extractor.getTrackFormat(i); String mime = format.getString(MediaFormat.KEY_MIME); if (mime.startsWith("audio/")) { extractor.selectTrack(i); int sampleRate = format.getInteger(MediaFormat.KEY_SAMPLE_RATE); int channelCount = format.getInteger(MediaFormat.KEY_CHANNEL_COUNT); MediaCodec codec = MediaCodec.createDecoderByType(mime); codec.configure(format, null, null, 0); codec.start();

    ByteBuffer[] inputBuffers = codec.getInputBuffers();
    ByteBuffer[] outputBuffers = codec.getOutputBuffers();
    MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
    
    // 自定义缓冲大小
    int minBufferSize = AudioTrack.getMinBufferSize(sampleRate, channelCount, AudioFormat.ENCODING_PCM_16BIT);
    int bufferSize = minBufferSize * 4;
    byte[] pcmData = new byte[bufferSize];

    boolean inputDone = false;
    boolean outputDone = false;
    int inputBufferIndex, outputBufferIndex, sampleSize;
    while (!outputDone) {
        if (!inputDone) {
            // 获取可用的输入缓冲区
            inputBufferIndex = codec.dequeueInputBuffer(-1);
            if (inputBufferIndex >= 0) {
                ByteBuffer inputBuffer = inputBuffers[inputBufferIndex];
                // 将数据写入输入缓冲区
                sampleSize = extractor.readSampleData(inputBuffer, 0);
                if (sampleSize < 0) {
                    codec.queueInputBuffer(inputBufferIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
                    inputDone = true;
                } else {
                    long presentationTimeUs = extractor.getSampleTime();
                    codec.queueInputBuffer(input