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Java for Android：IInAppBillingService.getSkuDetails 出现空指针异常

javaandroidjsonin-app-billing
5
当我运行以下针对Android的Java代码时，在GetItemList类的doInBackground方法中调用getSkuDetails的代码行上，我会收到一个NullPointerException。但是当我在调试器中逐步执行时，所有传递给getSkuDetails的参数都有值。pName不是空字符串，而且querySkus中有两个项目。我得到的确切错误消息是“尝试在空对象引用上调用接口方法'android.os.Bundle com.android.vending.billing.IInAppBillingService.getSkuDetails(int, java.lang.String, java.lang.String, android.os. Bundle)'。”有人知道为什么吗？
package com.myknitcards;

import java.util.ArrayList;

import org.json.JSONException;
import org.json.JSONObject;

import com.android.vending.billing.IInAppBillingService;

import android.app.Activity;
import android.content.ComponentName;
import android.content.ServiceConnection;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

public class AvailableCards extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_available_cards);
    String packagename = this.getPackageName();
    TextView priceView = (TextView)findViewById(R.id.availablePrice);
    new GetItemList(packagename, priceView).execute();
    }

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.available_cards, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}

class GetItemList extends AsyncTask<Integer, Integer, Long> {

private String pName;
private TextView pView;

GetItemList(String packagename, TextView priceView){
    pName = packagename;
    pView = priceView;
}

IInAppBillingService mService;

ServiceConnection mServiceConn = new ServiceConnection() {
   @Override
   public void onServiceDisconnected(ComponentName name) {
       mService = null;
   }

   @Override
   public void onServiceConnected(ComponentName name,
      IBinder service) {
       mService = IInAppBillingService.Stub.asInterface(service);
   }
};

@Override
protected Long doInBackground(Integer... params) {
    ArrayList<String> skuList = new ArrayList<String> ();
    skuList.add("i001");
    skuList.add("i002");
    Bundle querySkus = new Bundle();
    querySkus.putStringArrayList("ITEM_ID_LIST", skuList);
    Bundle skuDetails = null;
    try {
        skuDetails = mService.getSkuDetails(3, pName, "inapp", querySkus);
        int response = skuDetails.getInt("RESPONSE_CODE");
        if (response == 0) {
           ArrayList<String> responseList
              = skuDetails.getStringArrayList("DETAILS_LIST");
           for (String thisResponse : responseList) {
              JSONObject object;
              object = new JSONObject(thisResponse);
              String sku = object.getString("productId");
              String price = object.getString("price");
              String mFirstIntermediate;
              String mSecondIntermediate;
            if (sku.equals("i001")) mFirstIntermediate = price;
              else if (sku.equals("i002")) mSecondIntermediate = price;
            pView.setText(sku + ": " + price);
           }
        }
    } catch (NullPointerException ne)  {
        Log.d("Synch Billing", "Error Null Pointer: " + ne.getMessage());
        ne.printStackTrace();
    }
    catch (RemoteException e) {
        // TODO Auto-generated catch block
        Log.d("Synch Billing", "Error Remote: " + e.getMessage());
        e.printStackTrace();
    }
    catch (JSONException je) {
        // TODO Auto-generated catch block
        Log.d("Synch Billing", "Error JSON: " + je.getMessage());
        je.printStackTrace();
    }
    return null;
}
}

这是我的日志：
01-25 19:02:18.888: D/AndroidRuntime(4802): >>>>>> START com.android.internal.os.RuntimeInit uid 2000 <<<<<<
01-25 19:02:18.894: D/AndroidRuntime(4802): CheckJNI is OFF

01-25 19:02:18.951: D/ICU(4802): No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat
01-25 19:02:19.016: I/Radio-JNI(4802): register_android_hardware_Radio DONE
01-25 19:02:19.048: D/AndroidRuntime(4802): Calling main entry com.android.commands.pm.Pm
01-25 19:02:19.054: I/art(4802): System.exit called, status: 0
01-25 19:02:19.055: I/AndroidRuntime(4802): VM exiting with result code 0.
01-25 19:02:19.904: D/AndroidRuntime(4816): >>>>>> START com.android.internal.os.RuntimeInit uid 2000 <<<<<<
01-25 19:02:19.911: D/AndroidRuntime(4816): CheckJNI is OFF
01-25 19:02:19.969: D/ICU(4816): No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat
01-25 19:02:20.030: I/Radio-JNI(4816): register_android_hardware_Radio DONE
01-25 19:02:20.061: D/AndroidRuntime(4816): Calling main entry com.android.commands.am.Am
01-25 19:02:20.065: I/ActivityManager(607): Force stopping com.myknitcards appid=10087 user=-1: set debug app
01-25 19:02:20.066: I/ActivityManager(607): Killing 4727:com.myknitcards/u0a87 (adj 7): stop com.myknitcards
01-25 19:02:20.077: D/GraphicsStats(607): Buffer count: 3
01-25 19:02:20.077: I/WindowState(607): WIN DEATH: Window{9799d39 u0 com.myknitcards/com.myknitcards.MyKnitCardsMain}
01-25 19:02:20.179: I/ActivityManager(607):   Force finishing activity ActivityRecord{16bdee6 u0 com.myknitcards/.MyKnitCardsMain t53}
01-25 19:02:20.182: W/ActivityManager(607): Spurious death for ProcessRecord{d0de1a6 0:com.myknitcards/u0a87}, curProc for 4727: null
01-25 19:02:20.183: I/ActivityManager(607): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.myknitcards/.MyKnitCardsMain} from uid 2000 on display 0
01-25 19:02:20.195: D/AndroidRuntime(4816): Shutting down VM
01-25 19:02:20.226: I/ActivityManager(607): Start proc 4826:com.myknitcards/u0a87 for activity com.myknitcards/.MyKnitCardsMain
01-25 19:02:20.233: I/art(4826): Late-enabling -Xcheck:jni
01-25 19:02:20.272: E/art(4826): Failed sending reply to debugger: Broken pipe
01-25 19:02:20.272: I/art(4826): Debugger is no longer active
01-25 19:02:20.292: W/ActivityThread(4826): Application com.myknitcards is waiting for the debugger on port 8100...
01-25 19:02:20.293: I/System.out(4826): Sending WAIT chunk
01-25 19:02:20.341: I/OpenGLRenderer(607): Initialized EGL, version 1.4
01-25 19:02:21.296: I/art(4826): Debugger is active
01-25 19:02:21.495: I/System.out(4826): Debugger has connected
01-25 19:02:21.495: I/System.out(4826): waiting for debugger to settle...
01-25 19:02:21.695: I/System.out(4826): waiting for debugger to settle...
01-25 19:02:21.895: I/System.out(4826): waiting for debugger to settle...
01-25 19:02:22.096: I/System.out(4826): waiting for debugger to settle...
01-25 19:02:22.297: I/System.out(4826): waiting for debugger to settle...
01-25 19:02:22.498: I/System.out(4826): waiting for debugger to settle...
01-25 19:02:22.698: I/System.out(4826): waiting for debugger to settle...
01-25 19:02:22.898: I/System.out(4826): debugger has settled (1457)
01-25 19:02:22.975: W/System(4826): ClassLoader referenced unknown path: /data/app/com.myknitcards-1/lib/arm
01-25 19:02:23.044: D/OpenGLRenderer(4826): Use EGL_SWAP_BEHAVIOR_PRESERVED: true
01-25 19:02:23.076: D/Finsky(1556): [101] InAppBillingUtils.getPreferredAccount: com.myknitcards: Account from first account - [j5w9pVwTyqMNo_FRNWfkXIUz9SE]
01-25 19:02:23.080: D/Finsky(1556): [143] InAppBillingUtils.getPreferredAccount: com.myknitcards: Account from first account - [j5w9pVwTyqMNo_FRNWfkXIUz9SE]
01-25 19:02:23.084: D/com.myknitcards(4826): In-app Billing is set up OK
01-25 19:02:23.105: I/Adreno-EGL(4826): <qeglDrvAPI_eglInitialize:379>: QUALCOMM Build: 10/21/15, 369a2ea, I96aee987eb
01-25 19:02:23.108: I/OpenGLRenderer(4826): Initialized EGL, version 1.4
01-25 19:02:23.133: W/AppOps(607): Finishing op nesting under-run: uid 1000 pkg android code 24 time=1451855407389 duration=1783 nesting=0
01-25 19:02:23.222: I/ActivityManager(607): Displayed com.myknitcards/.MyKnitCardsMain: +3s7ms
01-25 19:02:23.225: I/Keyboard.Facilitator(1004): onFinishInput()
01-25 19:02:23.231: D/WifiStateMachine(607): starting scan for "BooNetwork-5G"WPA_PSK with 2462,5785
01-25 19:02:24.523: D/audio_hw_primary(196): out_set_parameters: enter: usecase(1: low-latency-playback) kvpairs: routing=2
01-25 19:02:24.524: I/ActivityManager(607): START u0 {cmp=com.myknitcards/.AvailableCards} from uid 10087 on display 0
01-25 19:02:24.533: D/audio_hw_primary(196): select_devices: out_snd_device(2: speaker) in_snd_device(0: none)
01-25 19:02:24.533: D/ACDB-LOADER(196): ACDB -> send_afe_cal
01-25 19:02:24.533: D/audio_hw_primary(196): enable_snd_device: snd_device(2: speaker)
01-25 19:02:24.542: D/audio_hw_primary(196): enable_audio_route: apply and update mixer path: low-latency-playback
01-25 19:02:24.666: I/ActivityManager(607): Displayed com.myknitcards/.AvailableCards: +134ms
01-25 19:02:24.667: I/Keyboard.Facilitator(1004): onFinishInput()
01-25 19:02:24.719: D/OpenGLRenderer(4826): endAllStagingAnimators on 0xb388d500 (RippleDrawable) with handle 0xb36fe690
01-25 19:02:27.777: D/audio_hw_primary(196): disable_audio_route: reset and update mixer path: low-latency-playback
01-25 19:02:27.778: D/audio_hw_primary(196): disable_snd_device: snd_device(2: speaker)
01-25 19:02:31.524: D/Synch Billing(4826): Error Null Pointer: Attempt to invoke interface method 'android.os.Bundle com.android.vending.billing.IInAppBillingService.getSkuDetails(int, java.lang.String, java.lang.String, android.os.Bundle)' on a null object reference
01-25 19:02:34.741: W/System.err(4826): java.lang.NullPointerException: Attempt to invoke interface method 'android.os.Bundle com.android.vending.billing.IInAppBillingService.getSkuDetails(int, java.lang.String, java.lang.String, android.os.Bundle)' on a null object reference
01-25 19:02:34.742: W/System.err(4826):     at com.myknitcards.GetItemList.doInBackground(AvailableCards.java:87)
01-25 19:02:34.742: W/System.err(4826):     at com.myknitcards.GetItemList.doInBackground(AvailableCards.java:1)
01-25 19:02:34.742: W/System.err(4826):     at android.os.AsyncTask$2.call(AsyncTask.java:295)
01-25 19:02:34.743: W/System.err(4826):     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
01-25 19:02:34.743: W/System.err(4826):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
01-25 19:02:34.743: W/System.err(4826):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
01-25 19:02:34.743: W/System.err(4826):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
01-25 19:02:34.743: W/System.err(4826):     at java.lang.Thread.run(Thread.java:818)
01-25 19:02:38.949: W/art(4826): Debugger told VM to exit with status 1
01-25 19:02:39.025: D/GraphicsStats(607): Buffer count: 3
01-25 19:02:39.026: I/WindowState(607): WIN DEATH: Window{f33f18e u0 com.myknitcards/com.myknitcards.MyKnitCardsMain}
01-25 19:02:39.029: I/WindowState(607): WIN DEATH: Window{6d143a7 u0 com.myknitcards/com.myknitcards.AvailableCards}
01-25 19:02:39.047: I/Zygote(206): Process 4826 exited cleanly (1)
01-25 19:02:39.066: I/ActivityManager(607): Process com.myknitcards (pid 4826) has died
01-25 19:02:39.068: W/ActivityManager(607): Force removing ActivityRecord{d4915cb u0 com.myknitcards/.AvailableCards t54}: app died, no saved state
01-25 19:02:39.080: I/ActivityManager(607): Start proc 4874:com.myknitcards/u0a87 for activity com.myknitcards/.MyKnitCardsMain
01-25 19:02:39.100: I/art(4874): Late-enabling -Xcheck:jni
01-25 19:02:39.157: W/System(4874): ClassLoader referenced unknown path: /data/app/com.myknitcards-1/lib/arm
01-25 19:02:39.223: D/OpenGLRenderer(4874): Use EGL_SWAP_BEHAVIOR_PRESERVED: true
01-25 19:02:39.264: I/Adreno-EGL(4874): <qeglDrvAPI_eglInitialize:379>: QUALCOMM Build: 10/21/15, 369a2ea, I96aee987eb
01-25 19:02:39.267: I/OpenGLRenderer(4874): Initialized EGL, version 1.4
01-25 19:02:39.342: D/Finsky(1556): [100] InAppBillingUtils.getPreferredAccount: com.myknitcards: Account from first account - [j5w9pVwTyqMNo_FRNWfkXIUz9SE]
01-25 19:02:39.346: D/Finsky(1556): [101] InAppBillingUtils.getPreferredAccount: com.myknitcards: Account from first account - [j5w9pVwTyqMNo_FRNWfkXIUz9SE]
01-25 19:02:39.347: D/com.myknitcards(4874): In-app Billing is set up OK
01-25 19:02:39.404: I/ActivityManager(607): Displayed com.myknitcards/.MyKnitCardsMain: +335ms
01-25 19:02:39.404: W/InputMethodManagerService(607): Got RemoteException sending setActive(false) notification to pid 4826 uid 10087
01-25 19:02:39.412: I/Keyboard.Facilitator(1004): onFinishInput()
01-25 19:02:40.885: D/audio_hw_primary(196): out_set_parameters: enter: usecase(1: low-latency-playback) kvpairs: routing=2
01-25 19:02:40.888: I/ActivityManager(607): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10200000 cmp=com.android.launcher/com.android.launcher2.Launcher (has extras)} from uid 1000 on display 0
01-25 19:02:40.895: D/audio_hw_primary(196): select_devices: out_snd_device(2: speaker) in_snd_device(0: none)
01-25 19:02:40.895: D/ACDB-LOADER(196): ACDB -> send_afe_cal
01-25 19:02:40.895: D/audio_hw_primary(196): enable_snd_device: snd_device(2: speaker)
01-25 19:02:40.905: D/audio_hw_primary(196): enable_audio_route: apply and update mixer path: low-latency-playback
01-25 19:02:41.013: I/Keyboard.Facilitator(1004): onFinishInput()
01-25 19:02:41.014: I/art(607): Background partial concurrent mark sweep GC freed 25641(1654KB) AllocSpace objects, 19(376KB) LOS objects, 33% free, 18MB/27MB, paused 2.227ms total 106.933ms
01-25 19:02:41.560: W/OpenGLRenderer(1111): Incorrectly called buildLayer on View: ShortcutAndWidgetContainer, destroying layer...
01-25 19:02:41.560: W/OpenGLRenderer(1111): Incorrectly called buildLayer on View: ShortcutAndWidgetContainer, destroying layer...
01-25 19:02:43.233: D/WifiStateMachine(607): starting scan for "BooNetwork-5G"WPA_PSK with 2462,5785
01-25 19:02:43.616: I/PowerManagerService(607): Going to sleep due to lid switch (uid 1000)...
01-25 19:02:43.616: I/PowerManagerService(607): Sleeping (uid 1000)...
01-25 19:02:43.621: W/AudioPolicyIntefaceImpl(196): getOutputForAttr uid 10012 tried to pass itself off as 1000
01-25 19:02:43.622: W/AudioFlinger(196): uid 10012 tried to pass itself off as 1000
01-25 19:02:43.625: I/Keyboard.Facilitator(1004): onFinishInput()
01-25 19:02:43.632: D/audio_hw_primary(196): out_set_parameters: enter: usecase(1: low-latency-playback) kvpairs: routing=2
01-25 19:02:43.698: I/ActivityManager(607): Config changes=480 {1.0 310mcc?mnc en_US ldltr sw600dp w960dp h528dp 320dpi lrg land finger -keyb/v/h -nav/h s.6}
01-25 19:02:43.700: I/InputReader(607): Reconfiguring input devices.  changes=0x00000004
01-25 19:02:43.700: I/InputReader(607): Device reconfigured: id=6, name='elan-touchscreen', size 1200x1920, orientation 1, mode 1, display id 0
01-25 19:02:43.703: V/AudioService.RotationHelper(607): publishing device rotation =1 (x90deg)
01-25 19:02:43.707: D/audio_hw_primary(196): adev_set_parameters: enter: rotation=90
01-25 19:02:44.040: D/Launcher.Model(1111): DbDebug    Modify item (Play Music) in db, id: 4 (2, 0, 0, 0) --> (2, 0, 0, 0)
01-25 19:02:44.040: D/Launcher.Model(1111): DbDebug    Modify item (Play Books) in db, id: 6 (2, 0, 1, 0) --> (2, 0, 1, 0)
01-25 19:02:44.041: D/Launcher.Model(1111): DbDebug    Modify item (Play Movies & TV) in db, id: 8 (2, 0, 2, 0) --> (2, 0, 2, 0)
01-25 19:02:44.041: D/Launcher.Model(1111): DbDebug    Modify item (Play Games) in db, id: 10 (2, 0, 3, 0) --> (2, 0, 3, 0)
01-25 19:02:44.042: D/Launcher.Model(1111): DbDebug    Modify item (Play Newsstand) in db, id: 12 (2, 0, 0, 1) --> (2, 0, 0, 1)
01-25 19:02:44.042: D/Launcher.Model(1111): DbDebug    Modify item (Google+) in db, id: 14 (2, 0, 1, 1) --> (2, 0, 1, 1)
01-25 19:02:44.043: D/Launcher.Model(1111): DbDebug    Modify item (Keep) in db, id: 16 (2, 0, 2, 1) --> (2, 0, 2, 1)
01-25 19:02:44.043: D/Launcher.Model(1111): DbDebug    Modify item (Calendar) in db, id: 20 (2, 0, 3, 1) --> (2, 0, 3, 1)
01-25 19:02:44.043: D/Launcher.Model(1111): DbDebug    Modify item (Currents) in db, id: 22 (2, 0, 0, 2) --> (2, 0, 0, 2)
01-25 19:02:44.044: D/Launcher.Model(1111): DbDebug    Modify item (Photos) in db, id: 24 (2, 0, 1, 2) --> (2, 0, 1, 2)
01-25 19:02:44.044: D/Launcher.Model(1111): DbDebug    Modify item (Earth) in db, id: 26 (2, 0, 2, 2) --> (2, 0, 2, 2)
01-25 19:02:44.147: I/Keyboard.Facilitator(1004): onFinishInput()
01-25 19:02:44.190: I/Launcher(1111): Deferring update until onResume
01-25 19:02:44.191: I/Launcher(1111): Deferring update until onResume
01-25 19:02:44.202: I/WindowManager(607): Screen frozen for +551ms due to Window{b92ff9b u0 com.android.launcher/com.android.launcher2.Launcher}
01-25 19:02:44.222: V/KeyguardServiceDelegate(607): onScreenTurnedOff()
01-25 19:02:44.249: I/DisplayManagerService(607): Display device changed state: "Built-in Screen", OFF
01-25 19:02:44.249: D/SurfaceFlinger(188): Set power mode=0, type=0 flinger=0xb6aa4000
01-25 19:02:44.529: D/SurfaceControl(607): Excessive delay in setPowerMode(): 280ms
01-25 19:02:44.530: E/ANDR-PERF-LOCK(204): Failed to apply optimization for resource: 4 level: 0
01-25 19:02:44.540: D/audio_hw_primary(196): adev_set_parameters: enter: screen_state=off
01-25 19:02:44.545: W/qcom_sensors_hal(607): hal_acquire_resources, no active sensors!
01-25 19:02:44.554: E/native(607): do suspend true
01-25 19:02:44.580: D/PhoneStatusBar(705): disable: < expand ICONS* alerts SYSTEM_INFO* back home recent clock search quick_settings >
01-25 19:02:44.721: D/PhoneStatusBar(705): disable: < expand ICONS alerts SYSTEM_INFO back HOME* RECENT* clock SEARCH* quick_settings >
01-25 19:02:46.209: I/art(607): Starting a blocking GC Explicit
01-25 19:02:46.280: I/art(607): Explicit concurrent mark sweep GC freed 14241(923KB) AllocSpace objects, 8(160KB) LOS objects, 33% free, 17MB/26MB, paused 1.129ms total 70.343ms
01-25 19:02:46.953: D/audio_hw_primary(196): disable_audio_route: reset and update mixer path: low-latency-playback
01-25 19:02:46.953: D/audio_hw_primary(196): disable_snd_device: snd_device(2: speaker)
01-25 19:03:03.251: D/WifiStateMachine(607): L2Connected CMD_START_SCAN source -2 41, 42 -> obsolete
01-25 19:03:03.787: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:03:14.835: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:03:29.947: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:03:41.038: E/(193): invalid crash request of size 4 (from pid=4794 uid=0)
01-25 19:03:41.165: E/Diag_Lib(4962):  Diag_LSM_Init: Failed to open handle to diag driver, error = 2
01-25 19:03:41.166: E/Sensors(4962): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:03:41.166: E/Sensors(4962): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:03:41.198: W/Sensors(4962): sns_smr_la.c(446):smr_la: smr_apps_la_thread_main is starting, fd=11, sns_smr.en_rx_msg_ptr=b6f34a08
01-25 19:03:41.261: W/Sensors(4962): sns_sam_app.c(6827):sns_sam_reg_algo: Registering algo service 16, err 0
01-25 19:03:41.272: E/Sensors(4962): sns_debug_main.c(565):Debug Config File missing in EFS!
01-25 19:03:44.187: I/Keyboard.Facilitator.LanguageModelFlusher(1004): run()
01-25 19:03:44.188: I/Keyboard.Facilitator(1004): flushDynamicLanguageModels()
01-25 19:03:44.237: I/ConfigService(1203): onCreate
01-25 19:03:49.340: I/ConfigService(1203): onDestroy
01-25 19:03:54.819: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:04:09.828: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:04:57.794: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:05:12.826: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:05:13.472: E/(193): invalid crash request of size 4 (from pid=4962 uid=0)
01-25 19:05:13.615: E/Diag_Lib(4977):  Diag_LSM_Init: Failed to open handle to diag driver, error = 2
01-25 19:05:13.615: E/Sensors(4977): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:05:13.616: E/Sensors(4977): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:05:13.648: W/Sensors(4977): sns_smr_la.c(446):smr_la: smr_apps_la_thread_main is starting, fd=11, sns_smr.en_rx_msg_ptr=b6fc4a08
01-25 19:05:13.713: W/Sensors(4977): sns_sam_app.c(6827):sns_sam_reg_algo: Registering algo service 16, err 0
01-25 19:05:13.726: E/Sensors(4977): sns_debug_main.c(565):Debug Config File missing in EFS!
01-25 19:06:00.771: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:06:15.788: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:06:45.928: E/(193): invalid crash request of size 4 (from pid=4977 uid=0)
01-25 19:06:46.091: E/Diag_Lib(4991):  Diag_LSM_Init: Failed to open handle to diag driver, error = 2
01-25 19:06:46.091: E/Sensors(4991): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:06:46.092: E/Sensors(4991): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:06:46.119: W/Sensors(4991): sns_smr_la.c(446):smr_la: smr_apps_la_thread_main is starting, fd=11, sns_smr.en_rx_msg_ptr=b6f2ea08
01-25 19:06:46.185: W/Sensors(4991): sns_sam_app.c(6827):sns_sam_reg_algo: Registering algo service 16, err 0
01-25 19:06:46.200: E/Sensors(4991): sns_debug_main.c(565):Debug Config File missing in EFS!
01-25 19:07:00.446: I/UsageStatsService(607): User[0] Flushing usage stats to disk
01-25 19:07:06.820: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:07:21.828: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:08:09.795: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:08:18.400: E/(193): invalid crash request of size 4 (from pid=4991 uid=0)
01-25 19:08:18.715: E/Diag_Lib(5008):  Diag_LSM_Init: Failed to open handle to diag driver, error = 2
01-25 19:08:18.717: E/Sensors(5008): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:08:18.718: E/Sensors(5008): sns_fsa_la.c(386):fsa: fflush failed, 9
01-25 19:08:18.748: W/Sensors(5008): sns_smr_la.c(446):smr_la: smr_apps_la_thread_main is starting, fd=11, sns_smr.en_rx_msg_ptr=b6ffca08
01-25 19:08:18.808: W/Sensors(5008): sns_sam_app.c(6827):sns_sam_reg_algo: Registering algo service 16, err 0
01-25 19:08:18.819: E/Sensors(5008): sns_debug_main.c(565):Debug Config File missing in EFS!
01-25 19:08:24.828: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
01-25 19:09:12.771: E/NetlinkEvent(192): NetlinkEvent::FindParam(): Parameter 'UID' not found
2
可能是重复的问题：什么是空指针异常，我该如何解决？ - Andy Turner
要么onServiceConnected从未被调用，要么在onServiceConnected之后且在doInBackground之前调用了onServiceDisconnected。 - Andy Turner
1个回答
5
可能发生的情况是，mServiceConn 连接类的实例需要一些时间才能连接，直到连接建立之前，mService 保持为 null。
要解决这个问题，请尝试以下代码：
public class AvailableCards extends Activity {

IInAppBillingService mService;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_available_cards);
    String packagename = this.getPackageName();
    TextView priceView = (TextView)findViewById(R.id.availablePrice);

    ServiceConnection mServiceConn = new ServiceConnection() {
       @Override
       public void onServiceDisconnected(ComponentName name) {
           mService = null;
       }

       @Override
       public void onServiceConnected(ComponentName name,
          IBinder service) {
           mService = IInAppBillingService.Stub.asInterface(service);
           new GetItemList(packagename, priceView).execute();
       }
    };

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.available_cards, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}

class GetItemList extends AsyncTask<Integer, Integer, Long> {

private String pName;
private TextView pView;

GetItemList(String packagename, TextView priceView){
    pName = packagename;
    pView = priceView;
}

@Override
protected Long doInBackground(Integer... params) {
    ArrayList<String> skuList = new ArrayList<String> ();
    skuList.add("i001");
    skuList.add("i002");
    Bundle querySkus = new Bundle();
    querySkus.putStringArrayList("ITEM_ID_LIST", skuList);
    Bundle skuDetails = null;
    try {
        skuDetails = mService.getSkuDetails(3, pName, "inapp", querySkus);
        int response = skuDetails.getInt("RESPONSE_CODE");
        if (response == 0) {
           ArrayList<String> responseList
              = skuDetails.getStringArrayList("DETAILS_LIST");
           for (String thisResponse : responseList) {
              JSONObject object;
              object = new JSONObject(thisResponse);
              String sku = object.getString("productId");
              String price = object.getString("price");
              String mFirstIntermediate;
              String mSecondIntermediate;
            if (sku.equals("i001")) mFirstIntermediate = price;
              else if (sku.equals("i002")) mSecondIntermediate = price;
            pView.setText(sku + ": " + price);
           }
        }
    } catch (NullPointerException ne)  {
        Log.d("Synch Billing", "Error Null Pointer: " + ne.getMessage());
        ne.printStackTrace();
    }
    catch (RemoteException e) {
        // TODO Auto-generated catch block
        Log.d("Synch Billing", "Error Remote: " + e.getMessage());
        e.printStackTrace();
    }
    catch (JSONException je) {
        // TODO Auto-generated catch block
        Log.d("Synch Billing", "Error JSON: " + je.getMessage());
        je.printStackTrace();
    }
    return null;
}
}
谢谢Fabio。我刚开始使用线程，所以对我来说还是一步一个脚印。我相信你的代码可以工作，只需要做一些修改。然而，由于某种原因，今天早上Eclipse不会进入调试模式。一旦我解决了这个问题并且可以逐步跟踪代码到下一个问题，我就会标记你的答案，并发布我所做的一些小修改以使其运行。再次感谢！ - Melanie
抱歉耽擱了，我在度假。无论如何，调试器现在可以工作了，但我永远无法进入我的GetItemList类。当调试器到达我的ServiceConnection声明（mServiceConn）并且我执行Step Into时，它会转到Object.java Object()构造函数，然后转到我的声明的末尾。调试器从未进入声明，因此它从未触发onServiceConnected()方法。有任何想法为什么会这样吗？ - Melanie
抱歉我回复晚了；我不是100%确定，但我认为那段代码不是线性运行的，因此调试器不会立即命中包含声明的下一行。所以，对于我来说调试程序流程的最佳方法是：在“ServiceConnection”声明中添加断点，然后在“onServiceConnected（）”方法内部再添加另一个断点。当它停在第一个断点时，点击“播放”按钮，让程序自由运行，然后它将命中“onServiceConnected”方法内部的下一个断点。 - Fábio Hiroki
谢谢您的回复。我应该发布这个问题，但我已经解决了它。我没有绑定服务（即使用bindService方法）。一旦我添加了它，一切都很好。再次感谢。 - Melanie
你不应该在构造函数中定义mServiceConn，因为你无法在onDestroy()中解除绑定。"当你完成Activity后，记得从应用内购买服务中解除绑定。如果你没有解除绑定，开放的服务连接可能会影响你设备的性能下降。"文档 - Jonatan
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