Android Programming Summary (1)

1. Display the prompt message dialog box through Toast class

Toast.maketext (login.this, "Please input the right infomation!", Toast.length_long). The show () function is implemented.

2,  android qt qstring android string qt qstring Gets a string with double quotes.

3, Android inputstream and fileinputstream Contact and difference:

InputStream myfile=new Bufferinputstream (New FileInputStream (New File ("C:\\erer.txt"));

4, becausesharedpreferencesbehind is the useXMLfile to save data,getsharedpreferences (Name,mode)The first parameter of the method specifies the name of the file, without a suffix, and the suffix isAndroidautomatically added. The second parameter of the method specifies the mode of operation of the file, with a total of four modes of operation. If you want tosharedpreferencesbehind the use ofXMLfiles can be read and written by other applications, you can specifycontext.mode_world_readableand thecontext.mode_world_writeablepermissions. But in fact the use ofmode_world_writeablepermissions, other applications cannot modify the data of this program ..If other programs want to modify this program data can be used in the configuration fileAndroid:shareduserid, plusShareduseridthen, when you write files to other programs, the permissions do not matter

5, MkDir() creates the directory specified by this abstract path name (and only one level of directory is created, and the parent directory is required); mkdirs() creates the directory specified by this abstract path, including all parent directories that must but not exist. (And you can create a multi-level directory, regardless of whether the parent directory exists)

6, Java Chinese Code reference URL:

http://www.ibm.com/developerworks/cn/java/j-lo-chinesecoding/

7, Advanced Video codec http://hexdigi.jimdo.com/2011/07/26/mpeg-h264-wmvhd-rmvb/

8. Java static method http://www.cnblogs.com/panjun-Donet/archive/2010/08/10/1796209.html