public static String format(String format, Object... args) {
    return new Formatter().format(format, args).toString();
}
 
public static boolean hasDebugFlag() {
    String path = Environment.getExternalStorageDirectory() + "/Log/debug"; //文件路径
    FileWriter writer = null;
    try {
        File file = new File(path);
        return file.exists();
    }catch (Exception e) {
 
    }
    return false;
}
 
public static void removeDebugFlag() {
    String path = Environment.getExternalStorageDirectory() + "/Log/debug"; //文件路径
    FileWriter writer = null;
    try {
        File file = new File(path);
        if(file.exists()) {
            file.delete();
        }
    }catch (Exception e) {
 
    }
}
 
public static void writeLog(String fileName,String content) {
    String path = Environment.getExternalStorageDirectory() + "/Log/"; //文件路径
    FileWriter writer = null;
    try {
        File file = new File(path);
        if (!file.exists()) {  //没有创建文件夹则创建
            file.mkdirs();
        }
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(currentTime);
        // 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件
        writer = new FileWriter(path + fileName, true);
        writer.write(dateString + " " + content + "\r\n");
        writer.flush();
        if (writer != null) {
            //关闭流
            writer.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}
 
public static boolean saveBitmap(Bitmap bitmap, Long id) {
    if (bitmap == null)
        return false;
 
    String path = Environment.getExternalStorageDirectory() + "/Log/";
    FileOutputStream fos = null;
    try {
        File f = new File(path +id.toString() + ".png");
        if(f.exists()) {
            f.delete();
        }
        f.createNewFile();
        fos = new FileOutputStream(f);
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
        fos.flush();
        return true;
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (fos != null) {
            try {
                fos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return false;
}
 
public void dumpFrame(ImiDevice.ImiFrame nextFrame, Long id) {
    try{
        ByteBuffer frameData = nextFrame.getData();
        int width = nextFrame.getWidth();
        int height = nextFrame.getHeight();
        frameData.position(0);
        int length = frameData.remaining();
        byte[] buf = new byte[length];
        frameData.get(buf);
        Bitmap save = com.commaai.face.util.Utils.RGB2Bitmap(buf, width, height);
        saveBitmap(save, id);
    }catch (Exception e) {
        writeLog("brokenflow.txt", "failed to save bitmap");
    }
}
 
使用逻辑
if(hasDebugFlag()) {
    dumpcnt = 20;
    removeDebugFlag();
}
 
if(dumpcnt > 0) {
    dumpcnt--;
    total++;
    dumpFrame(nextFrame, total);
}

public static String format(String format, Object... args) { return new Formatter().format(format, args).toString(); } public static boolean hasDebugFlag() { String path = Environment.getExternalStorageDirectory() + "/Log/debug"; //文件路径 FileWriter writer = null; try { File file = new File(path); return file.exists(); }catch (Exception e) { } return false; } public static void removeDebugFlag() { String path = Environment.getExternalStorageDirectory() + "/Log/debug"; //文件路径 FileWriter writer = null; try { File file = new File(path); if(file.exists()) { file.delete(); } }catch (Exception e) { } } public static void writeLog(String fileName,String content) { String path = Environment.getExternalStorageDirectory() + "/Log/"; //文件路径 FileWriter writer = null; try { File file = new File(path); if (!file.exists()) { //没有创建文件夹则创建 file.mkdirs(); } Date currentTime = new Date(); SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String dateString = formatter.format(currentTime); // 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件 writer = new FileWriter(path + fileName, true); writer.write(dateString + " " + content + "\r\n"); writer.flush(); if (writer != null) { //关闭流 writer.close(); } } catch (IOException e) { e.printStackTrace(); } } public static boolean saveBitmap(Bitmap bitmap, Long id) { if (bitmap == null) return false; String path = Environment.getExternalStorageDirectory() + "/Log/"; FileOutputStream fos = null; try { File f = new File(path +id.toString() + ".png"); if(f.exists()) { f.delete(); } f.createNewFile(); fos = new FileOutputStream(f); bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos); fos.flush(); return true; } catch (Exception e) { e.printStackTrace(); } finally { if (fos != null) { try { fos.close(); } catch (IOException e) { e.printStackTrace(); } } } return false; } public void dumpFrame(ImiDevice.ImiFrame nextFrame, Long id) { try{ ByteBuffer frameData = nextFrame.getData(); int width = nextFrame.getWidth(); int height = nextFrame.getHeight(); frameData.position(0); int length = frameData.remaining(); byte[] buf = new byte[length]; frameData.get(buf); Bitmap save = com.commaai.face.util.Utils.RGB2Bitmap(buf, width, height); saveBitmap(save, id); }catch (Exception e) { writeLog("brokenflow.txt", "failed to save bitmap"); } } 使用逻辑 if(hasDebugFlag()) { dumpcnt = 20; removeDebugFlag(); } if(dumpcnt > 0) { dumpcnt--; total++; dumpFrame(nextFrame, total); }