Android系统文件目录路径说明

来源：互联网发布：软件登记在哪里办理编辑：程序博客网时间：2024/06/13 17:32

原文 http://www.cnblogs.com/CVstyle/p/6389966.html

数据存储路径，如下：其中应用程序包名为：com.spt

ContextWrapper类中，包含以下方法

1. getFilesDir() –> 内部存储

@Overridepublic File getFilesDir() {    return mBase.getFilesDir();}

k86m_QC机器上数据存储路径：/data/data/com.spt/files

华为手机上数据存储路径：/data/data/com.spt/files

2. getExternalFilesDir(String type) 参数指定为：Environment.DIRECTORY_PICTURES –> 外部存储

@Overridepublic File getExternalFilesDir(String type) {    return mBase.getExternalFilesDir(type);}

k86m_QC机器上数据存储路径：/storage/sdcard0/Android/data/com.spt/files/Pictures

华为手机上数据存储路径：/storage/emulated/0/Android/data/com.spt/files/Pictures

3. getCacheDir() –> 内部存储

@Overridepublic File getCacheDir() {    return mBase.getCacheDir();}

k86m_QC机器上数据存储路径：/data/data/com.spt/cache

华为手机上数据存储路径：/data/data/com.spt/cache

4. getExternalCacheDir() –> 外部存储

@Overridepublic File getExternalCacheDir() {    return mBase.getExternalCacheDir();}

k86m_QC机器上数据存储路径：/storage/sdcard0/Android/data/com.spt/cache

华为手机上数据存储路径：/storage/emulated/0/Android/data/com.spt/cache

Environment类中，包含以下方法：

1. getDataDirctory()

/** * Return the user data directory. */public static File getDataDirectory() {    return DATA_DIRECTORY;}

k86m_QC机器上数据存储路径：/data

华为手机上数据存储路径：/data

2. getDownLoadCacheDirectory()

/** * Return the download/cache content directory. */public static File getDownloadCacheDirectory() {    return DOWNLOAD_CACHE_DIRECTORY;}

k86m_QC机器上数据存储路径：/cache

华为手机上数据存储路径：/cache

3. getExternalStorageDirectory()

/** * Return the primary external storage directory. This directory may not * currently be accessible if it has been mounted by the user on their * computer, has been removed from the device, or some other problem has * happened. You can determine its current state with * {@link #getExternalStorageState()}. * <p> * <em>Note: don't be confused by the word "external" here. This directory * can better be thought as media/shared storage. It is a filesystem that * can hold a relatively large amount of data and that is shared across all * applications (does not enforce permissions). Traditionally this is an SD * card, but it may also be implemented as built-in storage in a device that * is distinct from the protected internal storage and can be mounted as a * filesystem on a computer.</em> * <p> * On devices with multiple users (as described by {@link UserManager}), * each user has their own isolated external storage. Applications only have * access to the external storage for the user they're running as. * <p> * In devices with multiple "external" storage directories, this directory * represents the "primary" external storage that the user will interact * with. Access to secondary storage is available through * <p> * Applications should not directly use this top-level directory, in order * to avoid polluting the user's root namespace. Any files that are private * to the application should be placed in a directory returned by * {@link android.content.Context#getExternalFilesDir * Context.getExternalFilesDir}, which the system will take care of deleting * if the application is uninstalled. Other shared files should be placed in * one of the directories returned by * {@link #getExternalStoragePublicDirectory}. * <p> * Writing to this path requires the * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission, * and starting in read access requires the * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} permission, * which is automatically granted if you hold the write permission. * <p> * Starting in {@link android.os.Build.VERSION_CODES#KITKAT}, if your * application only needs to store internal data, consider using * {@link Context#getExternalFilesDir(String)} or * {@link Context#getExternalCacheDir()}, which require no permissions to * read or write. * <p> * This path may change between platform versions, so applications should * only persist relative paths. * <p> * Here is an example of typical code to monitor the state of external * storage: * <p> * {@sample * development/samples/ApiDemos/src/com/example/android/apis/content/ExternalStorage.java * monitor_storage} * * @see #getExternalStorageState() * @see #isExternalStorageRemovable() */public static File getExternalStorageDirectory() {    throwIfUserRequired();    return sCurrentUser.getExternalDirsForApp()[0];}

k86m_QC机器上数据存储路径：/storage/sdcard0

华为手机上数据存储路径：/storage/emulated/0

4. getRootDirectory()

/** * Return root of the "system" partition holding the core Android OS. * Always present and mounted read-only. */public static File getRootDirectory() {    return DIR_ANDROID_ROOT;}

k86m_QC机器上数据存储路径：/system

华为手机上数据存储路径：/system

5. getExternalStoragePublicDirectory(String type)

/** * Get a top-level public external storage directory for placing files of * a particular type.  This is where the user will typically place and * manage their own files, so you should be careful about what you put here * to ensure you don't erase their files or get in the way of their own * organization. * * <p>On devices with multiple users (as described by {@link UserManager}), * each user has their own isolated external storage. Applications only * have access to the external storage for the user they're running as.</p> * * <p>Here is an example of typical code to manipulate a picture on * the public external storage:</p> * * {@sample development/samples/ApiDemos/src/com/example/android/apis/content/ExternalStorage.java * public_picture} * * @param type The type of storage directory to return.  Should be one of * {@link #DIRECTORY_MUSIC}, {@link #DIRECTORY_PODCASTS}, * {@link #DIRECTORY_RINGTONES}, {@link #DIRECTORY_ALARMS}, * {@link #DIRECTORY_NOTIFICATIONS}, {@link #DIRECTORY_PICTURES}, * {@link #DIRECTORY_MOVIES}, {@link #DIRECTORY_DOWNLOADS}, or * {@link #DIRECTORY_DCIM}.  May not be null. * * @return Returns the File path for the directory.  Note that this * directory may not yet exist, so you must make sure it exists before * using it such as with {@link File#mkdirs File.mkdirs()}. */public static File getExternalStoragePublicDirectory(String type) {    throwIfUserRequired();    return sCurrentUser.buildExternalStoragePublicDirs(type)[0];}