SignIn with Apple

flutter sign in with apple on parse introduction parse server supports 3rd party authentication in this guide, you will learn how to support sign in with apple to your flutter app on parse prerequisites to complete this tutorial, you will need https //flutter dev/docs/get started/install https //developer android com/studio or https //code visualstudio com/ (with https //docs flutter dev/get started/editor dart and flutter) a flutter app created and connected to back4app note follow the https //www back4app com/docs/get started/new parse app to learn how to create a parse app on back4app paid membership to the https //developer apple com/programs/ set up the plugin sign in with apple sign in with apple on project a device (not simulator) running ios goal sign in with apple in flutter app on parse server 1 add the sign in with apple capability to your ios base project open ios/runner xcworkspace ios/runner xcworkspace in xcode check the plugin sign in with apple sign in with apple instructions for setting up sign in with apple sign in with apple in your ios project select team team for project save e close xcode 2 configure app id in developer portal log into your https //developer apple com/ and go to the identifiers identifiers section check if your created bundle identifier bundle identifier is there click the bundle identifier bundle identifier and scroll down check if the sign in with apple sign in with apple is selected click edit edit and make sure the enable as a primary app id enable as a primary app id is selected if everything is right, save and exit 3 set up parse auth for apple go to back4app website, log in and then find your app after that, click on server settings server settings and search for the apple login apple login block and select settings settings the apple login apple login section looks like this now, you just need to paste your bundle id bundle id in the field below and click on the button to save in case you face any trouble while integrating apple login, please contact our team via chat! 4 add the sign in with apple now that you have the project set up, we can get the user data and sign in to parse according to the documentation, we must send a map with user authentication data 1 final credential = await signinwithapple getappleidcredential( 2 scopes \[ 3 appleidauthorizationscopes email, 4 appleidauthorizationscopes fullname, 5 ], 6 ); 7 8 //https //docs parseplatform org/parse server/guide/#apple authdata 9 //according to the documentation, we must send a map with user authentication data 10 //make sign in with apple 11 final parseresponse = await parseuser loginwith('apple', 12 apple(credential identitytoken!, credential useridentifier!)); 5 sign in with apple from flutter let’s now use our example for sign in with apple in flutter app, with a simple interface open your flutter project, go to the main dart file, clean up all the code, and replace it with 1 import 'package\ flutter/material dart'; 2 import 'package\ parse server sdk flutter/parse server sdk dart'; 3 import 'package\ sign in with apple/sign in with apple dart'; 4 5 void main() async { 6 widgetsflutterbinding ensureinitialized(); 7 8 final keyapplicationid = 'your app id here'; 9 final keyclientkey = 'your client key here'; 10 final keyparseserverurl = 'https //parseapi back4app com'; 11 12 await parse() initialize(keyapplicationid, keyparseserverurl, 13 clientkey keyclientkey, debug true); 14 15 runapp(myapp()); 16 } 17 18 class myapp extends statelesswidget { 19 future\<bool> hasuserlogged() async { 20 parseuser? currentuser = await parseuser currentuser() as parseuser?; 21 if (currentuser == null) { 22 return false; 23 } 24 //checks whether the user's session token is valid 25 final parseresponse? parseresponse = 26 await parseuser getcurrentuserfromserver(currentuser sessiontoken!); 27 28 if (parseresponse? success == null || !parseresponse! success) { 29 //invalid session logout 30 await currentuser logout(); 31 return false; 32 } else { 33 return true; 34 } 35 } 36 37 @override 38 widget build(buildcontext context) { 39 return materialapp( 40 title 'flutter sign in with apple', 41 theme themedata( 42 primaryswatch colors blue, 43 visualdensity visualdensity adaptiveplatformdensity, 44 ), 45 home futurebuilder\<bool>( 46 future hasuserlogged(), 47 builder (context, snapshot) { 48 switch (snapshot connectionstate) { 49 case connectionstate none 50 case connectionstate waiting 51 return scaffold( 52 body center( 53 child container( 54 width 100, 55 height 100, 56 child circularprogressindicator()), 57 ), 58 ); 59 default 60 if (snapshot hasdata && snapshot data!) { 61 return userpage(); 62 } else { 63 return homepage(); 64 } 65 } 66 }), 67 ); 68 } 69 } 70 71 class homepage extends statefulwidget { 72 @override 73 homepagestate createstate() => homepagestate(); 74 } 75 76 class homepagestate extends state\<homepage> { 77 @override 78 widget build(buildcontext context) { 79 return scaffold( 80 appbar appbar( 81 title const text('flutter sign in with apple'), 82 ), 83 body center( 84 child singlechildscrollview( 85 padding const edgeinsets all(8), 86 child column( 87 crossaxisalignment crossaxisalignment stretch, 88 children \[ 89 container( 90 height 200, 91 child image network( 92 'http //blog back4app com/wp content/uploads/2017/11/logo b4a 1 768x175 1 png'), 93 ), 94 center( 95 child const text('flutter on back4app', 96 style 97 textstyle(fontsize 18, fontweight fontweight bold)), 98 ), 99 sizedbox( 100 height 100, 101 ), 102 container( 103 height 50, 104 child elevatedbutton( 105 child const text('sign in with apple'), 106 onpressed () => dosigninapple(), 107 ), 108 ), 109 sizedbox( 110 height 16, 111 ), 112 ], 113 ), 114 ), 115 )); 116 } 117 118 void dosigninapple() async { 119 late parseresponse parseresponse; 120 try { 121 //set scope 122 final credential = await signinwithapple getappleidcredential( 123 scopes \[ 124 appleidauthorizationscopes email, 125 appleidauthorizationscopes fullname, 126 ], 127 ); 128 129 //https //docs parseplatform org/parse server/guide/#apple authdata 130 //according to the documentation, we must send a map with user authentication data 131 //make sign in with apple 132 parseresponse = await parseuser loginwith('apple', 133 apple(credential identitytoken!, credential useridentifier!)); 134 135 if (parseresponse success) { 136 final parseuser parseuser = await parseuser currentuser() as parseuser; 137 138 //additional information in user 139 if (credential email != null) { 140 parseuser emailaddress = credential email; 141 } 142 if (credential givenname != null && credential familyname != null) { 143 parseuser set\<string>( 144 'name', '${credential givenname} ${credential familyname}'); 145 } 146 parseresponse = await parseuser save(); 147 if (parseresponse success) { 148 message showsuccess( 149 context context, 150 message 'user was successfully with sign in apple!', 151 onpressed () async { 152 navigator pushandremoveuntil( 153 context, 154 materialpageroute(builder (context) => userpage()), 155 (route\<dynamic> route) => false, 156 ); 157 }); 158 } else { 159 message showerror( 160 context context, message parseresponse error! message); 161 } 162 } else { 163 message showerror( 164 context context, message parseresponse error! message); 165 } 166 } on exception catch (e) { 167 print(e tostring()); 168 message showerror(context context, message e tostring()); 169 } 170 } 171 } 172 173 class userpage extends statelesswidget { 174 future\<parseuser?> getuser() async { 175 return await parseuser currentuser() as parseuser?; 176 } 177 178 @override 179 widget build(buildcontext context) { 180 void douserlogout() async { 181 final currentuser = await parseuser currentuser() as parseuser; 182 var response = await currentuser logout(); 183 if (response success) { 184 message showsuccess( 185 context context, 186 message 'user was successfully logout!', 187 onpressed () { 188 navigator pushandremoveuntil( 189 context, 190 materialpageroute(builder (context) => homepage()), 191 (route\<dynamic> route) => false, 192 ); 193 }); 194 } else { 195 message showerror(context context, message response error! message); 196 } 197 } 198 199 return scaffold( 200 appbar appbar( 201 title text('flutter sign in with apple'), 202 ), 203 body futurebuilder\<parseuser?>( 204 future getuser(), 205 builder (context, snapshot) { 206 switch (snapshot connectionstate) { 207 case connectionstate none 208 case connectionstate waiting 209 return center( 210 child container( 211 width 100, 212 height 100, 213 child circularprogressindicator()), 214 ); 215 default 216 return padding( 217 padding const edgeinsets all(8 0), 218 child column( 219 crossaxisalignment crossaxisalignment stretch, 220 mainaxisalignment mainaxisalignment center, 221 children \[ 222 center( 223 child text( 224 'hello, ${snapshot data! get\<string>('name')}')), 225 sizedbox( 226 height 16, 227 ), 228 container( 229 height 50, 230 child elevatedbutton( 231 child const text('logout'), 232 onpressed () => douserlogout(), 233 ), 234 ), 235 ], 236 ), 237 ); 238 } 239 })); 240 } 241 } 242 243 class message { 244 static void showsuccess( 245 {required buildcontext context, 246 required string message, 247 voidcallback? onpressed}) { 248 showdialog( 249 context context, 250 builder (buildcontext context) { 251 return alertdialog( 252 title const text("success!"), 253 content text(message), 254 actions \<widget>\[ 255 new elevatedbutton( 256 child const text("ok"), 257 onpressed () { 258 navigator of(context) pop(); 259 if (onpressed != null) { 260 onpressed(); 261 } 262 }, 263 ), 264 ], 265 ); 266 }, 267 ); 268 } 269 270 static void showerror( 271 {required buildcontext context, 272 required string message, 273 voidcallback? onpressed}) { 274 showdialog( 275 context context, 276 builder (buildcontext context) { 277 return alertdialog( 278 title const text("error!"), 279 content text(message), 280 actions \<widget>\[ 281 new elevatedbutton( 282 child const text("ok"), 283 onpressed () { 284 navigator of(context) pop(); 285 if (onpressed != null) { 286 onpressed(); 287 } 288 }, 289 ), 290 ], 291 ); 292 }, 293 ); 294 } 295 } find your application id and client key credentials navigating to your app dashboard at https //www back4app com/ update your code in main dart main dart with the values of your project’s applicationid and clientkey in back4app keyapplicationid = app id app id keyclientkey = client key client key run the project, and the app will load as shown in the image conclusion at this stage, you are able to use sign in with apple in flutter on back4app