android--storage and access to data

1. data file access operation

We can access the data to the default storage address for Android app data, with the address: installation package/data/data/<package name>/files/

1) Write data to the file

Public FileOutputStream Openfileoutputstream (String name, int mode)

Where the parameter name is the file name, mode is the data write method (file operation mode)

2) Read the data from the file

Public FileInputStream Openfileinputstream (String name)

Where name is the file from which you want to read data

2. Access data files in the resource directory (read only, cannot update write)

Public InputStream openrawresource (int id)

Where the parameter ID is the file ID

3. Get the file from the assets directory and read the data

Getresources (). Getassets (). Open ()

SQLite database

android--storage and access to data