Question

我考虑使用codenameone来实现跨平台应用，Win / Mac / Android / iOS。我在Windows上进行开发，对Mac和iOS开发相当无能为力。我使用的两个特定功能是java.sound API和RandomAccessFile。我很好奇移动平台上对这些的支持是什么样的。以下代码示例是否可以通过codenameone在移动平台（尤其是iOS）上运行？

示例1：

Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo();
    for (int ii = 0; ii < mixerInfo.length; ii++) {
        Mixer mixer = AudioSystem.getMixer(mixerInfo[ii]);
        Info[] sli = mixer.getSourceLineInfo();
        addSink(sinksModel, sli, mixer);
        Info[] tli = mixer.getTargetLineInfo();
        addSource(sourcesModel, tli, mixer);
    }
}

示例2：

    /** Starts playing audio from the current file position. */
public void startPlaying() {
    Runnable r = new Runnable() {

        @Override
        public void run() {
            int framePos = sendLastCue();
            playing = true;
            stopPlaying = false;
            while (!stopPlaying) {
                try {
                    int bytes = raf.read(buffer);
                    if (bytes < 0) {
                        break;
                    }
                    outputLine.write(buffer, 0, bytes);
                    framePos = sendCues(framePos);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            playing = false;
            stopPlaying = true;
            for (RecordingListener l : listeners) {
                l.playEnded();
            }

        }

    };
    new Thread(r).start();
}

示例3：

/* raf is an instance of RandomAccessFile. */
private void writeDirect(byte[] buf, int offset, int length) throws IOException {
        flush();
        raf.seek(virtualFilePointer);
        raf.write(buf, offset, length);
        virtualFilePointer = raf.getFilePointer();
        virtualLength = Math.max(virtualLength, raf.length());
        virtualFilePointer = raf.getFilePointer();
        directWriteCount++;
    }

谢谢！

Answer 1

没有

Codename One支持这些平台上的子集，并且不支持其中任何一个。它也不支持NIO或类似的API，这对于本机设备上的QA是不切实际的。

请参阅JavaDocs以获取所支持的API的完整集合：https://www.codenameone.com/javadoc/

您可以通过本机接口访问本机设备功能并以本机方式执行这些操作： http://www.codenameone.com/how-do-i---access-native-device-functionality-invoke-native-interfaces.html

https://www.codenameone.com/manual/advanced-topics.html#_native_interfaces

Android和iOS上是否完全支持java.sound和java.util.RandonAccessFile

1 个答案: