Question

我正在尝试向我的活动添加ProgressDialog以显示结算请求何时加载 - 因为它是网络请求，有时需要一段时间。我显示了进度对话框，然后在网络请求完成时将其关闭。然而，有时它需要很长时间并且似乎挂起。 如果我希望用户能够取消请求并关闭进度对话框，我将如何添加该功能？或者，是否有更好的方法来处理网络请求延迟？

这是我的购买代码：

private void MakePurchase(final String s)
{
    if (makingPayment) return;
    makingPayment = true;

    mProgressDialog = new ProgressDialog(DonateActivity.this);
    mProgressDialog.setTitle("Google Play Store");
    mProgressDialog.setMessage("Loading...");
    mProgressDialog.setIndeterminate(false);
    mProgressDialog.setCancelable(false);
    mProgressDialog.setCanceledOnTouchOutside(false);
    mProgressDialog.show();

    new Thread(new Runnable() {
        public void run() {
            ArrayList<String> skuList = new ArrayList<String> ();
            skuList.add(s);
            Bundle querySkus = new Bundle();
            querySkus.putStringArrayList("ITEM_ID_LIST", skuList);
            Bundle skuDetails;
            try {
                //Network request
                skuDetails = mService.getSkuDetails(3,
                        getPackageName(), "inapp", querySkus);
                mProgressDialog.dismiss();

                int response = skuDetails.getInt("RESPONSE_CODE");
                if (response == 0) {
                    ArrayList<String> responseList
                            = skuDetails.getStringArrayList("DETAILS_LIST");

                    for (String thisResponse : responseList) {
                        JSONObject object = new JSONObject(thisResponse);
                        String sku = object.getString("productId");
                        if (sku.equals(s)) {
                            Bundle buyIntentBundle = mService.getBuyIntent(3, getPackageName(),
                                    sku, "inapp", "bGoa+V7g/yqDXvKRqq+JTFn4uQZbPiQJo4pf9RzJ");
                            PendingIntent pendingIntent = buyIntentBundle.getParcelable("BUY_INTENT");
                            startIntentSenderForResult(pendingIntent.getIntentSender(),
                                    1001, new Intent(), Integer.valueOf(0), Integer.valueOf(0),
                                    Integer.valueOf(0));
                        }
                    }
                }
            } catch (RemoteException e) {
                e.printStackTrace();
            } catch (JSONException e) {
                e.printStackTrace();
            } catch (IntentSender.SendIntentException e) {
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }).start();
}

Answer 1

设置mProgressDialog.setCancelable(true);
通过ProgressDialog#setOnCancelListener(...)将OnCancelListener设置为ProgressDialog（http://developer.android.com/reference/android/app/Dialog.html#setOnCancelListener(android.content.DialogInterface.OnCancelListener)）
在取消侦听器中，取消网络请求（您需要在主线程中存储对待处理网络请求对象的引用）

Android：在等待网络时取消结算意图

1 个答案: