android paypal 应用内支付 : failed to initialize paypal library

Question

下面显示了我用于在我的 android 应用程序中初始化一个 paypal 对象的代码。运行时错误是由 doInBackground() 引起的，所以我认为这可能是由于 payPal.isLibraryInitialized() 返回的 false。

你们有在 Android 应用程序中集成 paypal 的经验吗？

private class PayPalInitializer extends AsyncTask<Void, Void, Boolean> {

    private static final String APP_ID = "APP-80W284485P519543T";
    private Context mContext;
    private ProgressDialog mProgressDialog;

    public PayPalInitializer(Context context) {
      mContext = context;
    }

    @Override
    protected void onPreExecute() {
      super.onPreExecute();
      mProgressDialog = new ProgressDialog(mContext);
      mProgressDialog.setMessage("...");
      mProgressDialog.show();
    }

    @Override
    protected Boolean doInBackground(Void... params) {
      boolean success = false;
      PayPal payPal = PayPal.getInstance();
      if (payPal == null) {
        payPal = PayPal.initWithAppID(mContext, APP_ID, PayPal.ENV_SANDBOX);
        payPal.setFeesPayer(PayPal.FEEPAYER_EACHRECEIVER);
        // Set to true if the transaction will require shipping.
        payPal.setShippingEnabled(true);
        if (payPal.isLibraryInitialized()) {
          success = true;
        }
      }
      return success;
    }

    @Override
    protected void onPostExecute(Boolean result) {
      super.onPostExecute(result);
      mProgressDialog.hide();
      mProgressDialog = null;
      if (result) {
        setupButton();
      } else {
        Toast.makeText(getApplicationContext(), "", Toast.LENGTH_SHORT).show();
      }
    }
  };

Answer 1

如果您添加了 jar 文件但未正确包含，则会发生此类错误。右键单击您的项目，然后转到属性--java 构建路径--顺序和导出。检查 jar 旁边的复选框。应该检查它。再次运行您的应用程序并检查是否存在相同的问题。