AppDelegate
#import "AppDelegate.h"
#import "WeChatSDK1.8.3_NoPay/WXApi.h"
#import "MBProgressHUD/MBProgressHUD.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
#pragma mark --------- 显示提示框 ---------
// 显示提示框
-(void)showMBAlertWithMessage:(NSString*)msg {
MBProgressHUD *hud = [[MBProgressHUD alloc] initWithWindow:self.window];
hud.mode = MBProgressHUDModeText; // 设置文本样式
hud.labelText= msg; // 设置显示的提示文本
hud.removeFromSuperViewOnHide = YES;
[self.windowaddSubview:hud];
[hudshow:YES];
[hudhide:YES afterDelay:3.0];
}
#pragma mark --------- 获取微信信息 ----------
// 通过code获取access_token
-(void)getAccessTokenWithCode:(NSString*)code {
// (1）网址字符串拼接
NSString *appID = @"wx537cf8aac45b25df";
NSString *appSecret = @"879024ead533e25662a7fa7ca1dcc940";
NSString *urlStr = [NSString stringWithFormat:@"https://api.weixin.qq.com/sns/oauth2/access_token?appid=%@&secret=%@&code=%@&grant_type=authorization_code",appID,appSecret,code];
NSURL *url = [NSURL URLWithString:urlStr];
[[[NSURLSession sharedSession] dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if(error !=nil) {
dispatch_async(dispatch_get_main_queue(), ^{
[self showMBAlertWithMessage:@"登录失败"];
});
return;
}
id jsonData = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
NSLog(@"json====%@",jsonData);
// 获取access_token 和 openID
NSString*access_token = jsonData[@"access_token"];
NSString*openid = jsonData[@"openid"];
// 通过token和id得到微信用户信息
[selfgetWXUserInfoWithToken:access_tokenopenID:openid];
}]resume];
}
// 通过token和openID获取微信用户信息
-(void)getWXUserInfoWithToken:(NSString*)accessToken openID:(NSString*)openID {
// （1）
NSString *urlStr = [NSString stringWithFormat:@"https://api.weixin.qq.com/sns/userinfo?access_token=%@&openid=%@",accessToken,openID];
// (2)
NSURL *url = [NSURL URLWithString:urlStr];
// （3）
[[[NSURLSession sharedSession] dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if(error !=nil) {
dispatch_async(dispatch_get_main_queue(), ^{
[self showMBAlertWithMessage:@"微信登录失败"];
});
return;
}
id userInfo = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
NSLog(@"userJson======%@",userInfo);
// 持久化数据
[[NSUserDefaults standardUserDefaults] setObject:userInfo forKey:@"loginUser"];
[[NSUserDefaults standardUserDefaults] synchronize];
// 切换窗口的根视图控制器
dispatch_async(dispatch_get_main_queue(), ^{
self.window.rootViewController=self.mainVC;
});
}]resume];
}
#pragma mark -------- WXApiDelegate --------
// 从微信app返回当前app调用的回调
-(void)onResp:(BaseResp*)resp {
// 如果是授权登录的回调
if([respisKindOfClass:[SendAuthRespclass]]) {
// 获取微信返回的code值
SendAuthResp*authResp = (SendAuthResp*)resp;
// 授权成功
if(authResp.errCode==0) {
// 得到返回的code值
NSString*code = authResp.code;
NSLog(@"code===%@",code);
// 获取access_token
[self getAccessTokenWithCode:code];
}
// 拒绝授权
elseif(authResp.errCode== -4) {
[self showMBAlertWithMessage:@"拒绝授权"];
}
// 取消授权
elseif(authResp.errCode== -2){
[self showMBAlertWithMessage:@"取消授权"];
}
}
// 如果是分享的回调
elseif([respisKindOfClass:[SendMessageToWXRespclass]]) {
}
}
#pragma mark ------- 控制器实例化 --------
-(MainViewController *)mainVC {
if(!_mainVC) {
_mainVC = [[MainViewController alloc] init];
}
return _mainVC;
}
-(ViewController *)loginVC {
if(!_loginVC) {
_loginVC = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateInitialViewController];
}
return _loginVC;
}
#pragma mark --------- UIApplicationDelegate -------
-(BOOL)application:(UIApplication*)application handleOpenURL:(NSURL*)url {
return [WXApi handleOpenURL:url delegate:self];
}
- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {
// Override point for customization after application launch.
// 向微信注册应用
[WXApi registerApp:@"wx537cf8aac45b25df"];
// 有持久化数据，表示登录过，将mainVC设置为窗口的根视图控制器
if ([[NSUserDefaults standardUserDefaults] objectForKey:@"loginUser"] != nil) {
self.window.rootViewController = self.mainVC;
}
// 没有持久化数据，表示未登录，将loginVC设置为窗口的根视图控制器
else{
self.window.rootViewController = self.loginVC;
}
return YES;
}
ViewController
#import "AppDelegate.h"
#import "WeChatSDK1.8.3_NoPay/WXApi.h"
- (IBAction)weChatLogin:(id)sender;
- (IBAction)weChatLogin:(id)sender {
//构造SendAuthReq结构体
SendAuthReq* req = [[SendAuthReq alloc]init];
req.scope = @"snsapi_userinfo";
req.state=@"123";
//第三方向微信终端发送一个SendAuthReq消息结构
[WXApisendReq:req];
}