SharedPreferences應(yīng)用經(jīng)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(yīng)用MODE_APPEND是沒有意義的，這個標(biāo)記表示文件可以追加，即可以持續(xù)向一個txt瑯綾擎寫器械，而MODE_PRIVATE 活著其他  會覆蓋文件
2、當(dāng)應(yīng)用這幾種權(quán)限時，其他法度榜樣拜訪數(shù)據(jù)時啟動本法度榜樣修改文件數(shù)據(jù)，其他法度榜樣獲得的┞氛樣緩存數(shù)據(jù)得不到最新的數(shù)據(jù)，其他法度榜樣要想獲得最新數(shù)據(jù)，本法度榜樣在寫文件時必須應(yīng)用MODE_MULTI_PROCESS權(quán)限。
如不雅不經(jīng)由過程創(chuàng)建Context拜訪其他應(yīng)用的preference，可以以攫取xml文件方法直接拜訪其他應(yīng)用preference對應(yīng)的xml文件