RESTORE_TRANSATION android 应用内代码

Question

RESTORE_TRANSATION 代码有一个大问题。我不明白如何在我的应用程序中实现恢复。代码如下：

restoButton.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            if (BillingHelper.isBillingSupported()) {
                BillingHelper.restoreTransactionInformation(BillingSecurity
                        .generateNonce());

                if( **HERE** ){
                    //restore
                    SharedPreferences settings = getSharedPreferences(ValoriApp.confName, ValoriApp.mode);
                    SharedPreferences.Editor editor = settings.edit();
                    editor.putInt("PRO", 1);
                    editor.commit();
                    Toast.makeText(getApplicationContext(), getString(R.string.toast_restore), Toast.LENGTH_SHORT);
                    finish();
                    startActivity(intentback);

                }
                else{
                    Toast.makeText(getApplicationContext(), getString(R.string.toast_norestore), Toast.LENGTH_LONG);
                    Log.e("RESTORE", "restore transation failed(2)");
                }

            }
            else{
                Toast.makeText(getApplicationContext(), getString(R.string.toast_norestore), Toast.LENGTH_LONG);
                Log.e("RESTORE", "restore transation failed");
            }

        }
    });

我不知道在第二个if 的HERE 中输入什么。怎么了？

Answer 1

// 不需要 if 条件。 if有什么用？

public void onClick(View v) {
            if (BillingHelper.isBillingSupported()) {
                BillingHelper.restoreTransactionInformation(BillingSecurity
                        .generateNonce());


                    //restore
                    SharedPreferences settings = getSharedPreferences(ValoriApp.confName, ValoriApp.mode);
                    SharedPreferences.Editor editor = settings.edit();
                    editor.putInt("PRO", 1);
                    editor.commit();
                    Toast.makeText(getApplicationContext(), getString(R.string.toast_restore), Toast.LENGTH_SHORT);
                    finish();
                    startActivity(intentback);


            }
            else{
                Toast.makeText(getApplicationContext(), getString(R.string.toast_norestore), Toast.LENGTH_LONG);
                Log.e("RESTORE", "restore transation failed");
            }

        }
    });