初始化paypal仅一次

Question

我在我的项目中设计了PayPal功能:

public class MypaypalActivity extends Activity implements OnClickListener{
    /** Called when the activity is first created. */
    @Override
public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        LinearLayout mLinLay= new LinearLayout(this);
        setContentView(R.layout.main);
        PayPal pp = PayPal.initWithAppID(this, "APP-
80W284485P519543T",PayPal.ENV_SANDBOX);

        LinearLayout layoutSimplePayment = new LinearLayout(this);
        layoutSimplePayment.setLayoutParams(new LayoutParams(
                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
        layoutSimplePayment.setOrientation(LinearLayout.VERTICAL);
        CheckoutButton launchSimplePayment = pp.getCheckoutButton(this,
                PayPal.BUTTON_118x24, CheckoutButton.TEXT_PAY);
        launchSimplePayment.setOnClickListener( this);
        layoutSimplePayment.addView(launchSimplePayment);
        mLinLay.addView(layoutSimplePayment);
        setContentView(mLinLay);
    }

这只会正常工作一次。当我第二次按下PayPal按钮时，这个应用程序崩溃了。在目录中有一个错误是你初始化PayPal两次，所以使用getInstance();初始化之后。

我该怎么做?

Answer 1

嘿，这是我的问题的解决方案，我自己做了这个。

PayPal pp = PayPal.getInstance();
        if (pp == null) {
            try {
                pp = PayPal.initWithAppID(this, "", PayPal.ENV_NONE);
            } catch (IllegalStateException e) {
                throw new RuntimeException(e);
            }
            pp.setShippingEnabled(false);
        }