Android Utility class Sharing (get memory/Check network/Screen height/mobile resolution) _android

Copy Code code as follows:

public class Commonutil {

public static Boolean Hassdcard () {

String status = Environment.getexternalstoragestate ();
Return Status.equals (environment.media_mounted);
}

/**
* Get maximum memory
*
* @return
*/
public static long Getmaxmemory () {

Return Runtime.getruntime (). MaxMemory ()/1024;
}

/**
* Check the network
*
* @param context
* @return
*/
public static Boolean Checknetstate (context context) {

Boolean netstate = false;
Connectivitymanager connectivity = (Connectivitymanager) context
. Getsystemservice (Context.connectivity_service);
if (connectivity!= null) {

Networkinfo[] info = Connectivity.getallnetworkinfo ();
if (info!= null) {
for (int i = 0; i < info.length; i++) {

if (info[i].getstate () = = NetworkInfo.State.CONNECTED) {

Netstate = true;
Break
}
}
}
}
return netstate;
}

public static void Showtoast (context context, String tip) {

Toast.maketext (context, Tip, Toast.length_short). Show ();
}

public static Displaymetrics metric = new Displaymetrics ();

/**
* Get screen height
*
* @param context
* @return
*/
public static int Getscreenheight (activity context) {

Context.getwindowmanager (). Getdefaultdisplay (). Getmetrics (Metric);
return metric.heightpixels;
}

/**
* Get screen width
*
* @param context
* @return
*/
public static int Getscreenwidth (activity context) {

Context.getwindowmanager (). Getdefaultdisplay (). Getmetrics (Metric);
return metric.widthpixels;
}

/**
* Change from DP unit to PX (pixel) According to the resolution of the mobile phone
*/

public static int dip2px (context context, float Dpvalue) {
Final float scale = context.getresources (). Getdisplaymetrics (). density;
return (int) (Dpvalue * scale + 0.5f);
}

/**
* According to the resolution of the mobile phone from px (pixel) units to become DP
*/
public static int Px2dip (context context, float Pxvalue) {

Final float scale = context.getresources (). Getdisplaymetrics (). density;
return (int) (Pxvalue/scale + 0.5f);
}

/**
* Search mobile phone for non-system applications
*
* @param context
* @return
*/
public static list<packageinfo> Getallapps (context context) {

  List<PackageInfo> apps = new arraylist<packageinfo> ();
  packagemanager Pmanager = Context.getpackagemanager ();
  //get all the apps in the phone
  List<PackageInfo> paklist = pmanager.getinstalledpackages (0);
  for (int i = 0; i < paklist.size (); i++) {
   packageinfo Pak = (packageinfo) paklist.get (i);
   //to determine if a system-preinstalled application
   if (Pak.applicationInfo.flags & Applicationinfo.flag_system) <= 0) {
    //Customs applications
     apps.add (Pak);
   }
  }
  return apps;
 }

public static Bitmap Zoombitmap (Bitmap Bitmap, int width, int height) {
int w = bitmap.getwidth ();
int h = bitmap.getheight ();
Matrix matrix = new Matrix ();
float ScaleWidth = ((float) width/w);
float ScaleHeight = ((float) height/h);
Matrix.postscale (ScaleWidth, ScaleHeight);
Bitmap newbmp = Bitmap.createbitmap (Bitmap, 0, 0, W, h, Matrix, true);
return newbmp;
}

/**
* Get version number and version number
*
* @param context
* @return
*/
public static String Getversioncode (context context, int type) {

try {

PackageInfo pi = Context.getpackagemanager (). Getpackageinfo (
Context.getpackagename (), 0);
if (type = = 1) {

Return string.valueof (Pi.versioncode);
} else {

return pi.versionname;
}
catch (Namenotfoundexception e) {

E.printstacktrace ();
return null;
}
}

To determine whether a service is started by the class name of the service
public static Boolean Messageserviceisstart (
List<activitymanager.runningserviceinfo> Mservicelist,
String className) {

for (int i = 0; i < mservicelist.size (); i++) {
if (Classname.equals (Mservicelist.get (i). Service.getclassname ())) {

return true;
}
}
return false;
}
}