Android 复制文件

    public static boolean copyFile(final String srcFilePath,
                                   final String destFilePath) {
        return copyOrMoveFile(getFileByPath(srcFilePath), getFileByPath(destFilePath));
    }


    private static boolean copyOrMoveFile(final File srcFile, final File destFile) {
        if (srcFile == null || destFile == null) return false;
        // srcFile equals destFile then return false
        if (srcFile.equals(destFile)) return false;
        // srcFile doesn't exist or isn't a file then return false
        if (!srcFile.exists() || !srcFile.isFile()) return false;
        if (destFile.exists()) {
            // require delete the old file
            if (!destFile.delete()) {// unsuccessfully delete then return false
                return false;
            }
        }
        if (!createOrExistsDir(destFile.getParentFile())) return false;
        try {
            return writeFileFromIS(destFile, new FileInputStream(srcFile), false);
        } catch (Exception e) {
            logger.e(e);
            return false;
        }
    }

    public static boolean writeFileFromIS(final File file,
                                          final InputStream is,
                                          final boolean append) {
        if (!createOrExistsFile(file) || is == null) return false;
        OutputStream os = null;
        try {
            os = new BufferedOutputStream(new FileOutputStream(file, append));
            byte data[] = new byte[8192];
            int len;
            while ((len = is.read(data, 0, 8192)) != -1) {
                os.write(data, 0, len);
            }
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (os != null) {
                    os.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }