"Android" Android Login interface design and network connection and authentication login

Androidmanifest.xml

<android:name= "Android.permission.INTERNET"></  Uses-permission><android:name= "Android.permission.ACCESS_ Network_state "/>

Layout file: Activity_main.xml

<Relativelayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"     >    <EditTextAndroid:id= "@+id/name"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_alignparenttop= "true"Android:layout_centerhorizontal= "true"Android:layout_margintop= "38DP"Android:ems= "Ten"Android:hint= "Account">        <Requestfocus/>    </EditText>    <EditTextAndroid:id= "@+id/password"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_below= "@+id/name"Android:layout_centerhorizontal= "true"Android:layout_margintop= "17DP"Android:ems= "Ten"Android:hint= "Password"Android:inputtype= "Textpassword" />    <TextViewAndroid:id= "@+id/info"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_below= "@+id/password"Android:layout_centerhorizontal= "true"Android:layout_margintop= "17DP"android:gravity= "Center"Android:text= "Welcome to use this product"        />    <ButtonAndroid:id= "@+id/exit"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_alignleft= "@+id/name"Android:layout_below= "@+id/info"Android:layout_marginleft= "16DP"Android:layout_margintop= "16DP"Android:text= "Leave" />    <ButtonAndroid:id= "@+id/login"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:layout_alignbaseline= "@+id/exit"Android:layout_alignbottom= "@+id/exit"Android:layout_alignright= "@+id/name"Android:layout_marginright= "16DP"Android:text= "Login" /></Relativelayout>

Mainactivity.java

Click the login button:

if(nameet!=NULL&&!nameet.gettext (). toString (). Equals ("") &&passwordet!=NULL&&!passwordet.gettext (). toString (). Equals ("") {LOG.E ("Login", "Login"); if(isconnect (mainactivity.this)!=false) {ProgressDialog= Progressdialog.show (mainactivity. This, "Please Wait", "Landing ...",true,false); } Thread T=NewThread (Newmyrunnable (Nameet. GetText (). toString (), Passwordet.gettext ().                    ToString ()));              T.start (); }Else{LOG.E ("Errors", "Error"); if(nameet==NULL|| Nameet.gettext (). toString (). Equals ("") {nameet.seterror ("Please enter a name"); }                  if(passwordet==NULL|| Passwordet.gettext (). toString (). Equals ("") {passwordet.seterror ("Please enter your password"); }              }

To open a thread:

 public  class  myrunnable implements   Runnable {String name, passcode;  public   Myrunnable (string name, string Pass) { //  TODO auto-generated Constr            Uctor stub  this . Name = name;         this . Passcode = pass; } @Override  public  void   run () {//*** Here for network connection, get data  * * * * 
// Use Get or post*** 

Data is added to the bundle

Message msg = new Message ();
Bundle bundle = new bundle ();//Store data

Bundle.putstring ("ReturnCode", data);

Msg.setdata (bundle);

Handler.sendmessage (msg); Send a message to handler to update the UI

                       }}        

Determine if there is no network:

 Public Static BooleanIsconnect (mainactivity activity) {//Get all connection management objects for your phone (including management of connections such as Wi-fi,net)        Try{Connectivitymanager Connectivity=( Connectivitymanager) (activity). Getsystemservice (Context.connectivity_service); if(Connectivity! =NULL) {                //get the objects for network connection managementNetworkinfo info =Connectivity.getactivenetworkinfo (); if(Info! =NULL&&info.isconnected ()) {                    //determine if the current network is connected                    if(info.getstate () = =NetworkInfo.State.CONNECTED) {return true; }                }            }        } Catch(Exception e) {//Todo:handle ExceptionLOG.V ("Error", e.tostring ()); }        return false; } 

The handler mechanism refreshes the UI:

Handler Handler =NewHandler () {@Override Public voidhandlemessage (Message msg) {//TODO auto-generated Method StubBundle B =Msg.getdata (); String ReturnCode= B.getstring ("ReturnCode"); if(Returncode.equals ("0")) {                /**return code, 0-Login successful, 1-account password error, server maintenance, 3-Unknown error*/                                //Close ProgressDialogProgressdialog.dismiss (); Infotv.settext ("Successful Landing"); } Else if(Returncode.equals ("1") ) {Progressdialog.dismiss (); Infotv.settext ("Incorrect account password"); Infotv.settextcolor (Getresources (). GetColor (Android.            R.color.holo_red_dark)); } Else if(Returncode.equals ("2") ) {Progressdialog.dismiss (); Infotv.settext ("Server Maintenance"); Infotv.settextcolor (Getresources (). GetColor (Android.            R.color.holo_red_dark)); } Else if(Returncode.equals ("3") ) {Progressdialog.dismiss (); Infotv.settext ("Unknown Error"); Infotv.settextcolor (Getresources (). GetColor (Android.            R.color.holo_red_dark)); } Else if(Statuscodestr.equals ("StatusCode") ) {Progressdialog.dismiss (); }        }    };

"Android" Android Login interface design and network connection and authentication login