SharedPreferences應用經驗

int

MODE_APPEND


File creation mode: for use with openFileOutput(String, int), if the file already exists then write data to the end of the existing file instead of erasing it.

int


MODE_MULTI_PROCESS

SharedPreference loading flag: when set, the file on disk will be checked for modification even if the shared preferences instance is already loaded in this process.

int

MODE_PRIVATE

File creation mode: the default mode, where the created file can only be accessed by the calling application (or all applications sharing the same user ID).

int
MODE_WORLD_READABLE

File creation mode: allow all other applications to have read access to the created file.

int

MODE_WORLD_WRITEABLE

File creation mode: allow all other applications to have write access to the created file.

1、對于SharedPreferences來說，應用MODE_APPEND是沒有意義的，這個(gè)标記表示文(wén)件可(kě)以追加，即可(kě)以持續向一個(gè)txt琅绫擎寫器(qì)械，而MODE_PRIVATE 活着其他  會覆蓋文(wén)件
2、當應用這幾種權限時，其他法度榜樣拜訪數據時啟動(dòng)本法度榜樣修改文(wén)件數據，其他法度榜樣獲得的┞氛樣緩存數據得不到最新的數據，其他法度榜樣要想獲得最新數據，本法度榜樣在寫文(wén)件時必須應用MODE_MULTI_PROCESS權限。
如(rú)不雅不經由過程創建Context拜訪其他應用的preference，可(kě)以以攫取xml文(wén)件方法直接拜訪其他應用preference對應的xml文(wén)件