android fileprovider external storage

Android briefly introduces SharedPreference, internal files, and sdcard data storage, SharedPreference Store simple data in xml structure and store it in the data/package name/shared_prefs folder Usage There are three ways to create an object GetSharedPreferences () of Context () GetPreferences () of the Activity () Getdefasharsharedpreferences () of PreferenceManager () Get Data SharedPrefs. getXXX () meth

In Android, the data storage technique balances the speed, efficiency, and robustness: Using shared preference When storing the UI status, user settings, or program settings, you may want a lightweight mechanism to store known datasets. Shared preference, also known as preference, allows you to save key/value pairs of basic data in groups. Upload File It is not exquisite, but sometimes file can only be th

Three of Android's typical local data storage methods Sharedpreferences Save in a file format in local storage SQL database This article explains how to save a file using Sharedpreferences. The main explanation is what is written in the annotation. Ide:android Studio Reference article: http://www.jb51.net/article/74215.htm Ramble about: Originally file operation this piece wants to understand it last

(curr_position) of the target data and the offset size (size.Int I = curr_position;While (I {Parcel. setDataPosition (I );Int curr_int = parcel. readXXXt ();I + = 4;Int j = 0;J ++;}Finally, I would like to remind you that in java, the value range of the basic data type refers to the data of the reference type, which is equivalent to the pointer in c, and the conversion and flexible reference between hexadecimal systems, and customize any hexadecimal data types you want. Into serialization, seri

the offset position (curr_position) of the target data and the offset size (size. Int I = curr_position; While (I { Parcel. setdataposition (I ); Int curr_int = parcel. readxxxt (); I + = 4; Int J = 0; J ++; } Finally, I would like to remind you that in Java, the value range of the basic data type refers to the data of the reference type, which is equivalent to the pointer in C, and the conversion and flexible reference between hexadecimal systems, and customize any hexadecimal data types you