Android本地存储目录记录

Categories: android   kotlin

Android手机存储分为内部存储和外部存储。

内部存储有3个目录，分别是Data目录、DownloadCache目录、Root目录

        var dataPath = Environment.getDataDirectory().absolutePath
        Logger.d("内部存储 data 目录：" + dataPath)
        var cachePath = Environment.getDownloadCacheDirectory().absolutePath
        Logger.d("内部存储 cache 目录：" + cachePath)
        var rootPath = Environment.getRootDirectory().absolutePath
        Logger.d("内部存储 root 目录：" + rootPath)

日志：

内部存储 data 目录：/data

内部存储 cache 目录：/cache

内部存储 root 目录：/system

外部存储就是原来一直说的SD卡，现在一般手机都有内置的一块区域作为这个外部存储

        var externalPath = Environment.getExternalStorageDirectory().absolutePath
        Logger.d("外部存储目录：" + externalPath)

日志：外部存储目录：/storage/emulated/0

这个外部存储目录下分别有10个公共目录，分别是Alarms、DCIM、Download、Movies、Music、Notifications、Pictures、Podcasts、Ringtones、Documents

        var alarmPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_ALARMS)
        Logger.d("公共目录Alarms:"+alarmPath)
        var dcimPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)
        Logger.d("公共目录DCIM:"+dcimPath)
        var documentPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS)
        Logger.d("公共目录document:"+documentPath)
        var downloadPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
        Logger.d("公共目录Downloads:"+downloadPath)
        var moviesPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES)
        Logger.d("公共目录Movies:"+moviesPath)
        var musicPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)
        Logger.d("公共目录Music:"+musicPath)
        var notificationPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS)
        Logger.d("公共目录Notification:"+notificationPath)
        var picturePath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
        Logger.d("公共目录Pictures:"+picturePath)
        var podcastPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PODCASTS)
        Logger.d("公共目录Podcasts:"+podcastPath)
        var ringtonesPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RINGTONES)
        Logger.d("公共目录Ringtones:"+ringtonesPath)

日志：

公共目录Alarms:/storage/emulated/0/Alarms

公共目录DCIM:/storage/emulated/0/DCIM

公共目录document:/storage/emulated/0/Documents

公共目录Downloads:/storage/emulated/0/Download

公共目录Movies:/storage/emulated/0/Movies

公共目录Music:/storage/emulated/0/Music

公共目录Notification:/storage/emulated/0/Notifications

公共目录Pictures:/storage/emulated/0/Pictures

公共目录Podcasts:/storage/emulated/0/Podcasts

公共目录Ringtones:/storage/emulated/0/Ringtones

不过官方不建议我们把APP的文件存放到这些公共目录内，而是把文件放到APP的私有目录下。

var privateTestPath = applicationContext.getExternalFilesDir("test").absolutePath
        Logger.d("私有目录 test："+privateTestPath)

打印日志：

私有目录 test：/storage/emulated/0/Android/data/包名/files/test

如果传入参数是null就是获取私有目录的根目录/storage/emulated/0/Android/data/包名/files

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