Android basic Tools class method and%s magical

1. Get phone resolution Public static string getdisplaymetrix (Context context)  {     if  (constant.screen.screen_width == 0 | |  constant.screen.screen_height == 0)  {        if   (Context != null)  {             int width = 0;            int  height = 0;             Sharedpreferences diaplaymetrixinfo = context.getsharedpreferences ("Display_metrix_info",  0);            if  (context instanceof  activity)  {                 WindowManager windowManager =  (Activity)  contexT). Getwindowmanager ();                 display display = windowmanager.getdefaultdisplay ();                 DisplayMetrics dm = new  Displaymetrics ();                 display.getmetrics (DM);                 width = dm.widthPixels;                 height = dm.heightPixels;                 Editor editor =  Diaplaymetrixinfo.edit ();                 editor.putint ("width",  widTH);                 Editor.putint ("height",  height);                 editor.commit ();             } else {                 width = diaplaymetrixinfo.getint ("width",  0);                 height = diaplaymetrixinfo.getint (" Height ",  0);            }             Constant.Screen.SCREEN_WIDTH = width;             Constant.Screen.SCREEN_HEIGHT =  Height;        }    }    return constant.screen.screen_width  +  "X"  + constant.screen.screen_height;} 2. Turn off the system's soft keyboard Public static void dismisssoftkeyboard (activity activity)  {     view view = activity.getwindow (). Peekdecorview ();    if  ( View != null)  {        InputMethodManager  inputmanger =  (Inputmethodmanager)  activity.getsystemservice (Context.input_method_service);         inputmanger.hidesoftinputfromwindow (View.getWindowToken (),  0),     }}3, dp-px Mutual conversion public static int dp2px (Context context,  float dpvalue)  {    final float scale =  Context.getresources (). Getdisplaymetrics () .density;    return  (int)   (DpValue * scale + 0.5f);} PUBLIC&NBSP;STATIC&NBSP;INT&NBSP;PX2DP (Context context, float pxvalue)  {     final float scale = context.getresources (). Getdisplaymetrics () .density;     return  (int)   (pxvalue / scale + 0.5f);} 4, get device unique encoding/** *  based on MAC address +deviceid *  get device unique encoding  * *  @return  */public  Static string getdevicekey ()  {    if  ("". Equals (Devicekey))  {         String macAddress =  "";         WifiManager wifiMgr =  (Wifimanager)  mainapplication.getins (). Getsystemservice (Mainapplication.wifi_service);        wifiinfo  info =  (Null == wifimgr ? null : wifimgr.getconnectioninfo ());         if  (Null != info)  {             macaddress = info.getmacaddress ();         }        telephonymanager telephonymanager =                  ( Telephonymanager)  mainapplication.getins (). Getsystemservice (Mainapplication.telephony_service);         string deviceid = telephonymanager.getdeviceid (); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;DEVICEKEY&NBSP;=&NBSP;MD5UTIL.TOMD5 ("Android"  +  Constant.appkey + constant.apppwd + macaddress + deviceid);     }    return devicekey;} 5, access to mobile phone and SIM card related information Public static map<string, string> getphoneinfo (CONTEXT&NBSp;context)  {    map<string, string> map = new hashmap <String, String> (;    telephonymanager tm = ) (Telephonymanager)  context            .getsystemservice ( Context.telephony_service);     string imei = tm.getdeviceid ();     string imsi = tm.getsubscriberid ();     string phonemode  = android.os.Build.MODEL;    String phoneSDk =  Android.os.build.version.release;    map.put ("IMEI",  imei);     Map.put ("Imsi",  imsi);     map.put ("Phonemode", phonemode +  "# #"  + &NBSP;PHONESDK)     map.put ("model",  phonemode);     map.put ("SDK" , &NBSP;PHONESDK);    Return map;} 6, Installation Apkpublic void install (context context, string filename)  {     if  (Textutils.isempty (fileName)  | |  context == null)  {        return;     }    try {        Intent  Intent = new intent (Intent.action_view);         Intent.setflags (Intent.flag_activity_new_task);         Intent.setaction (Android.content.Intent.ACTION_VIEW);         Intent.setdataandtype (Uri.fromfile (New file (fileName)),  "application/vnd.android.package-archive");         context.startactivity (Intent);    }  catch  (exception e)  {        e.printstAcktrace ();     }}public void install (Context context, file file)  {    try {        intent intent  = new intent (Intent.action_view);         Intent.setdataandtype (uri.fromfile (file),  "application/vnd.android.package-archive");         context.startactivity (Intent);    } catch  ( exception e)  {        e.printstacktrace ();    The magic of "%s" in  }}7, Strings.xml add string <string name= "text" in Strings.xml >Hello,%s!</string> Textview.settext in Code (String.Format (Getresources () getString (R.string.text), "Android"); Output: hello,android!

Android basic Tools class method and%s magical