问题
Anyone know how to fix this NullPointerException on the start of setup of the IabHelper?
java.lang.NullPointerException
at android.app.ApplicationPackageManager.queryIntentServicesAsUser(ApplicationPackageManager.java:559)
at android.app.ApplicationPackageManager.queryIntentServices(ApplicationPackageManager.java:571)
at IabHelper.startSetup(IabHelper.java:266)
at MyApplication.createIABHelper(MyApplication.java:256)
at MyApplication.onCreate(MyApplication.java:156)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1000)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4391)
at android.app.ActivityThread.access$1300(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5041)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:816)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:582)
at dalvik.system.NativeStart.main(NativeStart.java)
My IabHelper code is slightly modified because of other issues with it so here is the startSetup method:
public void startSetup(final OnIabSetupFinishedListener listener) {
// If already set up, can't do it again.
checkNotDisposed();
if (mSetupDone) throw new IllegalStateException("IAB helper is already set up.");
// Connection to IAB service
logDebug("Starting in-app billing setup.");
mServiceConn = new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName name) {
logDebug("Billing service disconnected.");
mService = null;
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
if (mDisposed) return;
logDebug("Billing service connected.");
mService = IInAppBillingService.Stub.asInterface(service);
String packageName = mContext.getPackageName();
try {
logDebug("Checking for in-app billing 3 support.");
// check for in-app billing v3 support
int response = mService.isBillingSupported(3, packageName, ITEM_TYPE_INAPP);
if (response != BILLING_RESPONSE_RESULT_OK) {
if (listener != null) listener.onIabSetupFinished(new IabResult(response,
"Error checking for billing v3 support."));
// if in-app purchases aren't supported, neither are subscriptions.
mSubscriptionsSupported = false;
return;
}
logDebug("In-app billing version 3 supported for " + packageName);
// check for v3 subscriptions support
response = mService.isBillingSupported(3, packageName, ITEM_TYPE_SUBS);
if (response == BILLING_RESPONSE_RESULT_OK) {
logDebug("Subscriptions AVAILABLE.");
mSubscriptionsSupported = true;
} else {
logDebug("Subscriptions NOT AVAILABLE. Response: " + response);
}
mSetupDone = true;
} catch (RemoteException e) {
if (listener != null) {
listener.onIabSetupFinished(new IabResult(IABHELPER_REMOTE_EXCEPTION,
"RemoteException while setting up in-app billing."));
}
e.printStackTrace();
return;
}
if (listener != null) {
listener.onIabSetupFinished(new IabResult(BILLING_RESPONSE_RESULT_OK, "Setup successful."));
}
}
};
Intent serviceIntent = getExplicitIapIntent();
PackageManager pm = mContext.getPackageManager();
List<ResolveInfo> intentServices = pm.queryIntentServices(serviceIntent, 0);
if (intentServices != null && !intentServices.isEmpty()) {
//this was replaced per this comment http://stackoverflow.com/a/24202135/704836
//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."));
}
}
}
The NullPointerException is happening at List<ResolveInfo> intentServices = pm.queryIntentServices(serviceIntent, 0);
Any ideas?
Thanks.
EDIT: here is the code for getExplicitIapIntent:
/**
* From http://stackoverflow.com/a/26318757/704836
* @return
*/
private Intent getExplicitIapIntent() {
PackageManager pm = mContext.getPackageManager();
Intent implicitIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
implicitIntent.setPackage("com.android.vending");
List<ResolveInfo> resolveInfos = pm.queryIntentServices(implicitIntent, 0);
// Is somebody else trying to intercept our IAP call?
if (resolveInfos == null || resolveInfos.size() != 1) {
return null;
}
ResolveInfo serviceInfo = resolveInfos.get(0);
String packageName = serviceInfo.serviceInfo.packageName;
String className = serviceInfo.serviceInfo.name;
ComponentName component = new ComponentName(packageName, className);
Intent iapIntent = new Intent();
iapIntent.setComponent(component);
return iapIntent;
}
EDIT: I should also point out that according to crashlytics, 100% of the devices giving this error are rooted. So maybe it is something to do with people trying to get around having to pay for features.
EDIT: I tried passing null instead of serviceIntent and got the following exception:
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Intent.resolveTypeIfNeeded(android.content.ContentResolver)' on a null object reference
at android.app.ApplicationPackageManager.queryIntentServicesAsUser(ApplicationPackageManager.java:644)
at android.app.ApplicationPackageManager.queryIntentServices(ApplicationPackageManager.java:656)
at IabHelper.startSetup(IabHelper.java:266)
On that exception the line numbers are different from the reports I've gotten, so I'm not certain it is the same.
EDIT: I think the exception I got on the last edit might be pretty much the same as the exception I am getting for 5.0.2 devices. Here is one of the 5.0.2 reports:
java.lang.NullPointerException
Attempt to invoke virtual method 'java.lang.String android.content.Intent.resolveTypeIfNeeded(android.content.ContentResolver)' on a null object reference
android.app.ApplicationPackageManager.queryIntentServicesAsUser (ApplicationPackageManager.java:645)
android.app.ApplicationPackageManager.queryIntentServices (ApplicationPackageManager.java:657)
IabHelper.startSetup (IabHelper.java:266)
EDIT: I went ahead and modified the code to throw an exception when serviceIntent is null and I've already had a few reports come back from my beta testers. All 100% rooted devices so I am guessing their devices don't have the correct com.android.vending.billing.InAppBillingService.BIND.
EDIT: Once the code was released the 100% rooted devices dropped to about 80%. Anyways I got a chance to troubleshoot with a user and it turned out that the getExplicitIntent method can return null sometimes under kitkat (not sure which other versions) so I went ahead and added an answer with how I changed the code.
回答1:
Do you have the code to the method queryIntentServicesAsUser()? After taking a closer look, it seems like one of the variables you are sending the queryIntentServices could be causing the NullPointer.
回答2:
So finally what is the right way to fix this problem? serviceIntent is null - that means someone wants to hack? And we let app crash in this situation?
回答3:
I finally found a user getting a null intent who was not doing anything dodgy with in-app purchases. He was on kitkat. The fix was this:
if (OSUtils.lollipopOrHigher) {
serviceIntent = getExplicitIapIntent();
} else {
serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
serviceIntent.setPackage("com.android.vending");
}
Another option would be to check for null and then try the non lollipop method.
来源：https://stackoverflow.com/questions/28177863/java-lang-nullpointerexception-at-iabhelper-startsetupiabhelper-java266