Xamarin.Android帶參數返回上一級界面

在ActivityA跳轉到ActivityB後。activityB返回到ActivityA並帶參數返回

首先再activitya中跳轉到b

var intent = new Intent(this, typeof(PurchaseDtlActivity));
            intent.PutExtra("sku", data[position].Title);
            intent.PutExtra("s", data[position].Pv);
            StartActivityForResult(intent, 2);

b返回數據並關閉

 Intent resultIntent = new Intent();
                 Bundle bundle = new Bundle();
                 bundle.PutString("Sku",sku );
                 bundle.PutInt("Qty", Convert.ToInt32(textView2.Text));
                 resultIntent.PutExtras(bundle);
                 this.SetResult(Result.Ok,resultIntent);
                 this.Finish();

在a中重寫OnActivityResult方法以便接受

 protected override void OnActivityResult(int requestCode, Result resultVal, Intent datas)
        {
            //如果是ok那麼就修改一下數量
            if (requestCode==2&&resultVal== Result.Ok)
            {
                string sku = datas.GetStringExtra("Sku");
                int qty = datas.GetIntExtra("Qty",1);
                foreach (var item in data)
                {
                    if (item.Title==sku)
                    {
                        item.Pv = qty;
                        PurchaseActivity.shua();
                        return;
                    }
                }
            }
        }

大家如果有問題可以
Console.WriteLine(”加羣“+"537905238");