Java 如何解决此错误

我在两个文件的264和163上有一个错误，但在编辑器中看起来很好

第264行：

if (!mContext.getPackageManager().queryIntentServices(serviceIntent, 0).isEmpty()) {

第163行：

mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {

我找不到为什么我的活动无法开始 日志：

这是包含第163行的整个支付块：

//=====================================================
    String base64EncodedPublicKey = "MIHNMA0GCSqGSIb3DQEBAQUAA4G7ADCBtwKBrwDtUWVdLt6clZldCQGZxcyyWeeBp8vF/6qm7qCKuQPdXg6HB71hVu8lmcEO0VcyS2xpzXt03iW7LhKXRtDsxi5H9wHLESfY9SQUc0ugPD+n5nE+I6zCiB/RB2WscvZFa3JCiYRbmsvez+DwaQSHfq6CNUawl0fbz4NfJntZHKYHanm6PtjquO9JSj+Pa9PV38C3o5Y3ALCvPMCAwEAAQ==";

    mHelper = new IabHelper(this, base64EncodedPublicKey);
    mGotInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
        public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
            Log.d(TAG, "Query inventory finished.");
            if (result.isFailure()) {
                Log.d(TAG, "Failed to query inventory: " + result);
                return;
            }
            else {
                Log.d(TAG, "Query inventory was successful.");
                // does the user have the premium upgrade?
                mIsPremium = inventory.hasPurchase(SKU_PREMIUM);
                if (mIsPremium){
                    MasrafSeke(inventory.getPurchase(SKU_PREMIUM));
                }
                // update UI accordingly

                Log.d(TAG, "User is " + (mIsPremium ? "PREMIUM" : "NOT PREMIUM"));
            }

            Log.d(TAG, "Initial inventory query finished; enabling main UI.");
        }
    };

    mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
        public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
            if (result.isFailure()) {
                Log.d(TAG, "Error purchasing: " + result);
                return;
            }
            else if (purchase.getSku().equals(SKU_PREMIUM)) {
                // give user access to premium content and update the UI
                Toast.makeText(AndroidHTMLActivity.this,"خرید موفق",Toast.LENGTH_SHORT).show();
                MasrafSeke(purchase);

            }
        }
    };


    Log.d(TAG, "Starting setup.");
    mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
        public void onIabSetupFinished(IabResult result) {
            Log.d(TAG, "Setup finished.");

            if (!result.isSuccess()) {
                // Oh noes, there was a problem.
                Log.d(TAG, "Problem setting up In-app Billing: " + result);
            }
            // Hooray, IAB is fully set up!
            mHelper.queryInventoryAsync(mGotInventoryListener);
        }
    });

---

似乎是个问题。方法

querytentservices

返回一个

null

，而不是一个空列表

尝试从以下位置更新代码：

Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
if (!mContext.getPackageManager().queryIntentServices(serviceIntent, 0).isEmpty()) {
    // service available to handle that Intent
    mContext.bindService(serviceIntent, mServiceConn, Context.BIND_AUTO_CREATE);
}
else {
    // no service available to handle that Intent
    if (listener != null) {
        listener.onIabSetupFinished(
                new IabResult(BILLING_RESPONSE_RESULT_BILLING_UNAVAILABLE,
                "Billing service unavailable on device.")); 
    }
}

为此：

Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
List<ResolveInfo> intentServices = mContext.getPackageManager().queryIntentServices(serviceIntent, 0);

if (intentServices != null && intentServices.isEmpty() == false) {
    // service available to handle that Intent
    mContext.bindService(serviceIntent, mServiceConn, Context.BIND_AUTO_CREATE);
}
else {
    // no service available to handle that Intent
    if (listener != null) {
        listener.onIabSetupFinished(
                new IabResult(BILLING_RESPONSE_RESULT_BILLING_UNAVAILABLE,
                "Billing service unavailable on device.")); 
    }
}

Intent-serviceentent=newintent（“com.android.vending.billing.InAppBillingService.BIND”）；
List intentServices=mContext.getPackageManager（）.queryIntentServices（serviceIntent，0）；
if（intentServices！=null&&intentServices.isEmpty（）==false）{
//可用于处理该意图的服务
bindService（serviceentent、mServiceConn、Context.BIND\u AUTO\u CREATE）；
}
否则{
//没有可用于处理该意图的服务
if（侦听器！=null）{
listener.onIabSetupFinished(
新结果（计费\响应\结果\计费\不可用，
“设备上的计费服务不可用。”）；
}
}

您得到了一个空指针……因此有些东西没有初始化。你能再发一些代码吗…可以是McContext吗？先发几行163@petey：163之前：

Log.d（标记“启动设置”）请将更多代码发布到question@petey：检查它。请使用：java.lang.IllegalStateException:未设置IAB帮助程序。IabHelper.java:798 IabHelper.java:626 IabHelper.java:655 AndroidHTMLActivity.java:139 IabHelper.java:290 AndroidHTMLActivity.java:130仅更改答案中的行无法接收此异常。检查您是否做了其他更改。@Amir.KH：这是另一个问题。对于NullPointerException，Mattia是正确的。您应该为IllegalStateException创建另一个问题。一个答案不能解决所有问题
Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
List<ResolveInfo> intentServices = mContext.getPackageManager().queryIntentServices(serviceIntent, 0);

if (intentServices != null && intentServices.isEmpty() == false) {
    // service available to handle that Intent
    mContext.bindService(serviceIntent, mServiceConn, Context.BIND_AUTO_CREATE);
}
else {
    // no service available to handle that Intent
    if (listener != null) {
        listener.onIabSetupFinished(
                new IabResult(BILLING_RESPONSE_RESULT_BILLING_UNAVAILABLE,
                "Billing service unavailable on device.")); 
    }
}