Save all mmap memory to file synchronously. You don't need to call this, really, I mean it. Unless you worry about the device running out of battery.

@return Return true if you want inter-process content change notification.

ClearMemoryCache Clear all caches (on memory warning).

Close the instance when it's no longer needed in the near future. Any subsequent call to the instance is undefined behavior.

Count return count of keys

MMKVWithIDAndMode an instance with specific location ${NameSpace Root}/mmapID, in single-process or multi-process mode.

Scale helper to convert logical scaler values to physical using passed in scale factor

@return The file descriptor of the ashmem of the MMKV file.

@return The file descriptor of the ashmem of the MMKV crc file.

Just reset the encryption key (will not encrypt or decrypt anything). Usually you should call this method after another process has {@link #reKey(Stri

copy to a temp file then rename it this is the best we can do under the POSIX standard

Enable auto key expiration. This is a upgrade operation, the file format will change. And the file won't be accessed correctly by older version (v1.2.

Enable data compare before set, for better performance. If data for key seldom changes, use it. When encryption or expiration is on, compare-before-se

Get the actual size of the key's value. String's length or byte[]'s length, etc. @param key The key of the value.

Get the actual size consumption of the key's value. Note: might be a little bigger than value's length. @param key The key of the value.

Check whether the MMKV file is valid or not. Note: Don't use this to check the existence of the instance, the result is undefined on nonexistent files

historically Android mistakenly use mmapKey as mmapID, we try migrate back to normal when possible

DefaultMMKVWithConfig a generic purpose instance with all-in-one configuration.

* ReKey Change encryption key for the MMKV instance. * The cryptKey is 16 bytes limited. * You can transfer a plain-text MMKV into encrypted by se

backup one MMKV instance to dstDir @param mmapID the MMKV ID to backup @param rootPath the customize root path of the MMKV, if null then backup fro

@return The encryption key (no more than 16 bytes).

Disable auto key expiration. This is a downgrade operation.

import all key-value items from src @return count of items imported

we don't need to really serialize the dictionary, just reuse what's already in the file

Inter-process content change notification. Triggered by any method call, such as getXXX() or setXXX() or {@link MMKV#checkContentChangedByOuterProcess