java - Android Log In with Gmail not supported -

i 'm developing android application allows user login gmail . problem have integrating cycled clicking on log in button. here code use , idea why happens, or example can use?

public class androidgoogleplusexample extends activity implements onclicklistener, connectioncallbacks, onconnectionfailedlistener {

private static final int rc_sign_in = 0;  // google client communicate google private googleapiclient mgoogleapiclient;  private boolean mintentinprogress; private boolean signedinuser; private connectionresult mconnectionresult; private signinbutton signinbutton; private imageview image; private textview username, emaillabel; private linearlayout profileframe, signinframe;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      signinbutton = (signinbutton) findviewbyid(r.id.signin);     signinbutton.setonclicklistener(this);      image = (imageview) findviewbyid(r.id.image);     username = (textview) findviewbyid(r.id.username);     emaillabel = (textview) findviewbyid(r.id.email);      profileframe = (linearlayout) findviewbyid(r.id.profileframe);     signinframe = (linearlayout) findviewbyid(r.id.signinframe);          mgoogleapiclient = new googleapiclient.builder(this).addconnectioncallbacks(this).addonconnectionfailedlistener(this).addapi(plus.api, plus.plusoptions.builder().build()).addscope(plus.scope_plus_login).build();   }   protected void onstart() {     super.onstart();     mgoogleapiclient.connect(); }  protected void onstop() {     super.onstop();     if (mgoogleapiclient.isconnected()) {         mgoogleapiclient.disconnect();     } }  private void resolvesigninerror() {     if (mconnectionresult.hasresolution()) {         try {             mintentinprogress = true;             mconnectionresult.startresolutionforresult(this, rc_sign_in);         } catch (sendintentexception e) {             mintentinprogress = false;             mgoogleapiclient.connect();         }     } }  @override public void onconnectionfailed(connectionresult result) {     if (!result.hasresolution()) {         googleplayservicesutil.geterrordialog(result.geterrorcode(), this, 0).show();         return;     }      if (!mintentinprogress) {         // store mconnectionresult         mconnectionresult = result;          if (signedinuser) {             resolvesigninerror();         }     } }  @override protected void onactivityresult(int requestcode, int responsecode, intent intent) {     switch (requestcode) {     case rc_sign_in:         if (responsecode == result_ok) {             signedinuser = false;          }         mintentinprogress = false;         if (!mgoogleapiclient.isconnecting()) {             mgoogleapiclient.connect();         }         break;     } }  @override public void onconnected(bundle arg0) {     signedinuser = false;     toast.maketext(this, "connected", toast.length_long).show();     getprofileinformation(); }  private void updateprofile(boolean issignedin) {     if (issignedin) {         signinframe.setvisibility(view.gone);         profileframe.setvisibility(view.visible);      } else {         signinframe.setvisibility(view.visible);         profileframe.setvisibility(view.gone);     } }  private void getprofileinformation() {     try {         if (plus.peopleapi.getcurrentperson(mgoogleapiclient) != null) {             person currentperson = plus.peopleapi.getcurrentperson(mgoogleapiclient);             string personname = currentperson.getdisplayname();             string personphotourl = currentperson.getimage().geturl();             string email = plus.accountapi.getaccountname(mgoogleapiclient);              username.settext(personname);             emaillabel.settext(email);              new loadprofileimage(image).execute(personphotourl);              // update profile frame new info google account             // profile             updateprofile(true);         }     } catch (exception e) {         e.printstacktrace();     } }  @override public void onconnectionsuspended(int cause) {     mgoogleapiclient.connect();     updateprofile(false); }  @override public void onclick(view v) {     switch (v.getid()) {     case r.id.signin:         googlepluslogin();         break;     } }  public void signin(view v) {     googlepluslogin(); }  public void logout(view v) {     googlepluslogout(); }  private void googlepluslogin() {     if (!mgoogleapiclient.isconnecting()) {         signedinuser = true;         resolvesigninerror();     } }  private void googlepluslogout() {     if (mgoogleapiclient.isconnected()) {         plus.accountapi.cleardefaultaccount(mgoogleapiclient);         mgoogleapiclient.disconnect();         mgoogleapiclient.connect();         updateprofile(false);     } }  // download google account profile image, complete profile private class loadprofileimage extends asynctask<string, void, bitmap> {     imageview downloadedimage;      public loadprofileimage(imageview image) {         this.downloadedimage = image;     }      protected bitmap doinbackground(string... urls) {         string url = urls[0];         bitmap icon = null;         try {             inputstream in = new java.net.url(url).openstream();             icon = bitmapfactory.decodestream(in);         } catch (exception e) {             log.e("error", e.getmessage());             e.printstacktrace();         }         return icon;     }      protected void onpostexecute(bitmap result) {         downloadedimage.setimagebitmap(result);     } } 

manifest:

 <uses-permission android:name="android.permission.internet" /> <uses-permission android:name="android.permission.get_accounts" /> <uses-permission android:name="android.permission.use_credentials" />      <meta-data         android:name="com.google.android.gms.version"         android:value="@integer/google_play_services_version" />