Most all Android development common tool class

Mainly introduced in the summary of Android development commonly used tool classes, most of the same applies to Java.

currently includeshttputils,Downloadmanagerpro,Safe.ijiami,shellutils,packageutils,preferencesutils,jsonutils,FileUtils,resourceutils,StringUtils,parcelutils,randomutils,arrayutils,imageutils,listutils,maputils,objectutils,serializeutils,systemutils,timeutils.  

1, Httputils
HTTP Network tool classes, mainly including HttpGet, HttpPost, and HTTP parameter related methods, take httpget as an example:
Static HttpResponse HttpGet (HttpRequest request)
Static HttpResponse HttpGet (java.lang.String httpurl)
static string httpgetstring (String httpurl)
Contains the above three methods, using GZIP compression by default, using BufferedReader to improve read speed.
HttpRequest can set the URL, timeout, useragent and other HTTP parameters
Return content, HTTP response code, HTTP Expiration Time (Cache-control Max-age and expires) can be obtained in HttpResponse, etc.
The first two methods can be advanced parameter setting and rich content return, the third method can simply pass in the URL to get the return content, httppost similar. More detailed settings can be used directly with the HttpURLConnection or Apache httpclient.
SOURCE VisibleHttputils.java, more methods and more detailed parameters are presentedhttputils Api Guide。

        2, Downloadmanagerpro
       android system Download Management Downloadmanager enhancement method, which can be used to include information about downloads such as:
      Getstatusbyid (long)   Get download status
      getdownloadbytes (long)   Get download progress information
      Getbytesandstatus (long)   Get download progress information and status
      GetFileName (long)   Get download file path
      GetURI (long)   get download URI
      GetReason (long)   Get download failure or pause reason
      Getpausedreason (long)   Get download pause reason
      GetErrorCode (long)   Get download error code
      Source visible downloadmanagerpro.java , more methods and more detailed parameter description visible downloadmanagerpro api guide . About Android downmanager using the visible downmanager demo .  

3, Safe.ijiami

Android Vulnerability Detection Tool, online upload Android apk, detect the APK development process generated by some vulnerable hackers exploit, attack vulnerability, based on the vulnerability of the corresponding solution, a key to generate detailed analysis report, Let Android developers know the vulnerabilities of their Android apps at a glance and take steps to protect them in a timely manner.

Details Visible http://safe.ijiami.cn , solutions for a variety of applications are visible Http://www.ijiami.cn/appprotect_mobile_games

        4, Shellutils
       android shell tool class, which can be used to check system root privileges and execute shell commands under the shell or root user. such as: Checkrootpermission ()   Check root permissions execcommand (string[] commands, boolean isroot,  BOOLEAN ISNEEDRESULTMSG)  shell Environment Execution command, the second parameter indicates whether the root permission is executed execcommand (String command, boolean  isroot)  shell Environment Execution Command
        source visible shellutils.java , more methods and more detailed parameters are described in the visible shellutils api guide .

        5, Packageutils
        Android Package related tool class, can be used to (root) install the application, (root) Uninstall the application, determine whether the system application, such as: Install (context, string)   Installs the application, if is the system application or already root, then installs silently, otherwise generally installs uninstall (context, string)   Uninstalls the application, if is the system application or already root, then silently unloads, Otherwise general uninstall Issystemapplication (context, string)   Determine if app is applied for system
        source visible packageutils.java , more methods and more detailed parameters are shown shellutils api  Guide .

         6, preferencesutils
        android sharedpreferences related tool classes, which can be used to read and write related types of data to sharedpreferences easily. such as: Putstring (context, string, string)   Save String type data
        Putint (Context,  string, int)   Save int type data
        getString (context, string)   Get String type data
        GETINT (context, string)   get int type data
        can modify Preference_name variable preference name
        source visible Preferencesutils.java , more methods and more detailed parameter description visible preferencesutils api guide .

7, Jsonutils
The Jsonutils tool class can be used to easily read and write related types of data to JSON, such as:
String getString (Jsonobject jsonobject, string key, String defaultvalue) Gets the string type value
String getString (String jsondata, String key, String defaultvalue) Gets the string type value
Represents the value of reading a string type key from JSON

Getmap (Jsonobject jsonobject, String key) Get Map

        Getmap (string jsondata,  String key)   Get map
        to read the value of a map type key from JSON
        Source visible Span style= "COLOR: #3333ff" >jsonutils.java , more methods and more detailed parameters are visible jsonutils api  guide .

        8, FileUtils
        File tool classes, which can be used to read and write files and manipulate files. For example:
        ReadFile (string filepath)   read files
        WriteFile ( String filepath, string content, boolean append)   Write file
        GetFileSize (string path)   Get file size
        DeleteFile (string path)   Delete files
        source visible fileutils.java , more methods and more detailed parameter description visible fileutils api guide .

         9, resourceutils
        Android resource tool classes, which can be used to read content from the raw and assets directories of the Android resource directory, such as:
        Gefilefromassets (context context, string filename)   Get a file content in assets directory
        Gefilefromraw (CONTEXT CONTEXT, INT RESID)   Get a file content from the raw directory
        Source visible resourceutils.java , more methods and more detailed parameter description visible resourceutils api guide .

        10, StringUtils
        String tool class for common string manipulation, such as:
        IsEmpty (STRING STR)   Determines whether a string is empty or 0
        IsBlank (STRING STR)   Determines whether a string is empty or has a length of 0  or is made up of spaces
        Utf8encode (STRING STR)   encode in utf-8 format
        Capitalizefirstletter (STRING STR)   capitalize
        source visible stringutils.java , more methods and more detailed parameters are described in the visible stringutils api guide .

        11, Parcelutils
        Android parcel tool class that can be used to read or write special types of data from parcel, such as:
        Readboolean (parcel in)   Read Boolean type data from Pacel
        Readhashmap (parcel in,  Classloader loader)   Read map type data from Pacel
        Writeboolean (boolean b,  Parcel out)   Write Boolean type data to Parcel
        Writehashmap (map<k, v>  Map, parcel out, int flags)   Write map type data to Parcel
        Source visible parcelutils.java , more methods and more detailed parameters are visible parcelutils api  guide .

&NBSP;      12, Randomutils
        Random number tool class, which can be used to obtain random numbers of fixed-size fixed character characters, such as:
        Getrandom (char[]  sourcechar, int length)   Generate random strings, all characters nonspacing within a string
        getrandomnumbers (int  length)   Generate random numbers
        source visible randomutils.java , More methods and more detailed parameters are visible randomutils api guide .

       13, arrayutils
        Array tool class, available for array common operations, such as:
        IsEmpty (V[] sourcearray)   Determines whether the array is empty or 0
        GetLast (v[] sourcearray, v value, v  defaultvalue, boolean iscircle)   Gets the previous element of an element in the array, iscircle indicates whether to loop
        GetNext (v[] sourcearray, v value, v defaultvalue, boolean iscircle)   Gets the next element of an element in the array, iscircle indicates whether to loop
        source visible arrayutils.java , more methods and more detailed parameters are described in the visible arrayutils api guide .

       14, Imageutils
        Picture tool classes, which can be used to convert between bitmap, byte array, drawable and image scaling, are currently weak and will be enhanced later. For example:
        bitmaptodrawable (bitmap b)  bimap convert to drawable
        Drawabletobitmap (drawable d)  drawable converted to bitmap
        Drawabletobyte ( DRAWABLE&NBSP;D)  drawable convert to byte
        Scaleimage (bitmap org, float  scalewidth, float scaleheight)   Zoom image
        source visible Imageutils.java , more methods and more detailed parameters are described in imageutils api guide .

         15, Listutils
         list tool class, available for List Common operations, such as:
        IsEmpty (list<v>  sourcelist)   Determine whether the List is empty or 0
        Join (list<string> list,  String separator)  list converted to a string and split with a fixed delimiter
        Adddistinctentry (list<v>  sourcelist, v entry)   Add non-repeating elements to the list
        Source visible listutils.java , more methods and more detailed parameters are visible listutils api  guide .

       16, Maputils
        Map tool class, available for map common operations such as
        IsEmpty (map<k, v>  SOURCEMAP)   Determine if the map is empty or 0          Parsekeyandvaluetomap (string source,  String keyandvalueseparator, string keyandvaluepairseparator, boolean ignorespace)   String parsing to Map
ToJson (map<string, string> map)  map converted to JSON format
source visible maputils.java , more methods and more detailed parameters are visible maputils api  guide .

        17, Objectutils
        Object tool class, which can be used for object common use, such as:
        Isequals (object actual,  object expected)   Compare two objects equal
        Compare (V&NBSP;V1,&NBSP;V&NBSP;V2)   Compare two object sizes
        Transformintarray (Int[] source)   Integer  Array conversion to int array
        source visible objectutils.java , more methods and more detailed parameters are described in Span style= "COLOR: #3333ff" >objectutils api guide .

18, Serializeutils
A serialization tool class that can be used to serialize an object to a file or deserialize an object from a file, such as:
Deserialization (String FilePath) Deserializes an object from a file
Serialization (String FilePath, Object obj) serializes objects to a file
Source Visible Serializeutils.java, more methods and more detailed parameters of the serializeutils ApiGuide can be seen.

19, Systemutils
The System Information tool class, which can be used to get the appropriate size of the thread pool, is currently weak and will be enhanced later. Such as:
Getdefaultthreadpoolsize () Get the thread pool size that matches the system configuration
Source Visible Systemutils.java, more methods and more detailed parameters of the systemutils ApiGuide can be seen.

20, Timeutils
Time tool class that can be used for time-related operations such as:
Getcurrenttimeinlong () Gets the current time
GetTime (Long Timeinmillis, SimpleDateFormat DateFormat) converts a long to a fixed-format time string
Source Visible Timeutils.java, more methods and more detailed parameters of the timeutils ApiGuide can be seen.

Most all Android development common tool class