安卓检测usb挂载点路径 [英] Android detect usb mount point path

问题描述

我正在开发一款可以连接到 USB SD 读卡器的应用.问题是所有手机的 USB 路径都不相同.我知道在三星手机中，USB 路径是/storage/UsbDriveA/"

I am working on a app that can connect to a USB SD card reader. The problem is the USB path is not the same for all the phones. I know that in Samsung phones the USB path is "/storage/UsbDriveA/"

我的问题是如何找到所有手机设备的 USB 安装路径?

My question is how can I find the USB mount path for all phone devices?

谢谢

推荐答案

    private String getAllStoragePath() {
    String finalPath = "";
    try {
        Runtime runtime = Runtime.getRuntime();
        Process process = runtime.exec("mount");
        InputStream inputStream = process.getInputStream();
        InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
        String line;
        String[] pathArray = new String[4];
        int i = 0;

        BufferedReader br = new BufferedReader(inputStreamReader);
        while ((line = br.readLine()) != null) {
            String mount = "";
            if (line.contains("secure"))
                continue;
            if (line.contains("asec"))
                continue;

            if (line.contains("fat")) {// TF card
                String columns[] = line.split(" ");
                if (columns.length > 1) {
                    mount = mount.concat(columns[1] + "/someFiles");

                    pathArray[i++] = mount;

                    // check directory inputStream exist or not
                    File dir = new File(mount);
                    if (dir.exists() && dir.isDirectory()) {
                        // do something here
                        finalPath = mount;
                        break;
                    }
                }
            }
        }

        for(String path:pathArray){
            if(path!=null){
                finalPath =finalPath + path +"\n";
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
    return finalPath;
}

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