复制Assets下的文件到存储卡

2020-04-23

/**
     * 复制Assets下的文件到存储卡
     *
     * @param assetsFileName assets下的要复制的文件名
     * @param sdFolder       sd卡保存位置的文件夹路径
     * @return sd卡保存的文件路径
     */
    public String copyVideoToLocalPath(String assetsFileName, String sdFolder) {
        String localFilePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + sdFolder + "/" + assetsFileName;
        if (new File(localFilePath).exists()) return localFilePath;

        try {
            InputStream myInput = this.getAssets().open(assetsFileName);
            //用的是com.blankj.utilcode 库的工具
            if (FileIOUtils.writeFileFromIS(localFilePath, myInput)) {
                return localFilePath;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }