Android file read/write API

1.android four read and write file modes

Context.mode_private: Private mode, overwrite original file contents

Context.mode_append: Append mode, appended to the original file content

Context.mode_world_readable: Ability to read content from other applications

Context.mode_world_writeable: Ability to write content to other applications

If you want other apps to read and write, add 2 context.mode_world_readable + context.mode_world_writeable

FileOutputStream OS = Context.openfileoutput (fileName, module);
Os.write (Content.getbytes ());
Os.close ();

2. Append when other apps write to data

String Path = "/data/data/com.example.demo1/files/rw.txt";
The second parameter, the output stream, is filled in by appending.
FileOutputStream fos = new FileOutputStream (new File (path), true);
Fos.write ("ddddddddd". GetBytes ());
Fos.flush ();
Fos.close ();

Android file read/write API