Xamarin.Android带参数返回上一级界面

在ActivityA跳转到ActivityB后。activityB返回到ActivityA并带参数返回

首先再activitya中跳转到b

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

b返回数据并关闭

 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中重写OnActivityResult方法以便接受

 protected override void OnActivityResult(int requestCode, Result resultVal, Intent datas)
        {
            //如果是ok那么就修改一下数量
            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;
                    }
                }
            }
        }

大家如果有问题可以

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