Android在内部存储中创建目录+子（或）子目录

Question

  

我目前正在使用内部存储空间

• 我有一些问题

我正在尝试在内部存储中创建子目录，例如 data / data / com.example.app / parentfolder / childfolder / sample.mp4

  

我的代码是

    ContextWrapper cw = new ContextWrapper(context);
    File parentpath = cw.getDir("parentfolder ",Context.MODE_PRIVATE);
    File childpath = new File(parentpath ,"childfolder");
    File childfolder = new File(childpath,"sample.mp4");
    FileOutputStream fos = new FileOutputStream(childfolder);

有些逻辑错误，它不能创建子文件夹，它反映了一些错误....

Answer 1

File file = new File(location);
file.mkdirs();

Answer 2

  

最后我得到答案

//Save Internal Storage

File myMainDir = context.getDir("MainFolder", Context.MODE_PRIVATE);

File mySubjectDir = new File(myMainDir, subFolder);
mySubjectDir.mkdir();

File myModuleDir = new File(mySubjectDir, semiSubFolder);
myModuleDir.mkdir();

File myFinalDir = new File(mySubjectDir, fileName);

//Save External Storage

String DNAME = "MainFolder"+"/"+subFolder+"/"+semiSubFolder;
File rootPath = new File(Environment.getExternalStorageDirectory().toString(), DNAME);
if(!rootPath.exists()) {
    rootPath.mkdirs();
}

if(!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
    Log.v("Cannot use storage","Cannot use storage");
}

File myFinalDir = new File(rootPath,TopicName);