今天博主有一個微信支付的需求,遇到了一些困難點,在此和大家分享,希望能夠共同進步.

1.申請AppID，匯入依賴庫，配置URL Scheme這裡就不深究了，各位看官請自行百度.

2.在AppDelegate中匯入標頭檔案,遵守WXApiDelegate,然後在launch裡註冊AppID.

3.在支付介面匯入標頭檔案，建立支付物件，調起微信

//調起微信支付,傳入引數

PayReq* req = [[[PayReq alloc] init]autorelease];

req.openID = APPI_ID;

req.partnerId = PARTNER_ID;

req.prepayId = prePayid;

req.nonceStr = nonce_str;

req.timeStamp = now;

req.package = package;

req.sign = sign;

[WXApi safeSendReq:req];

4.微信支付的回撥需要新增在AppDelegate中

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation

{

     //返回應用後的回撥，通過handleOpenURL進入微信支付的回撥onResp:(BaseResp*)resp

         return [WXApi handleOpenURL:url delegate:self];

}

-(void) onResp:(BaseResp*)resp

{

if ([resp isKindOfClass:[PayResp class]])

{

PayResp *response = (PayResp *)resp;

NSString *strTitle = [NSString stringWithFormat:@"支付結果"];

NSString *strMsg = [NSString stringWithFormat:@"errcode:%d", response.errCode];

 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitlemessage:strMsg  delegate:self cancelButtonTitle:@"OK"  otherButtonTitles:nil, nil];

[alert show];

switch (response.errCode) {

case WXSuccess: {

NSNotification *notification = [NSNotification notificationWithName:ORDER_PAY_NOTIFICATION object:@"success"];

[[NSNotificationCenter defaultCenter] postNotification:notification];

break;

}

default: {

NSNotification *notification = [NSNotification notificationWithName:ORDER_PAY_NOTIFICATION object:@"fail"];

[[NSNotificationCenter defaultCenter] postNotification:notification];

break;

}

}

}

}

但是將微信支付相關的程式碼全部寫到AppDelegate中又會顯得程式碼冗餘，這時我們需要建立通知，在成功回撥後發出通知，在支付介面監聽回撥，完成支付.

5.在監聽回撥中，上傳我們從微信支付中獲得的引數，完成支付.