Android Activity 在不应该的时候被销毁

Question

我正在使用 Google Play In app Billing 并使用 IabHelper 提交我的请求，它在后台使用 startIntentSenderForResult。

正如预期的那样，调用完成后(Google Play Activity 关闭)，结果将在 onActivityResult 方法中返回到我的 Activity，然后将其委托(delegate)给等待中的 OnIabPurchaseFinishedListener通过 IabHelper 实例。如果在购买过程中发生错误，则会在完成的监听器中向用户(我的代码)显示一个对话框。看起来好像在用户完成调用的 Play 商店 Activity 之前将结果返回到我的应用程序。

详细信息:在我的应用程序中，我按下启动购买意向的购买按钮，显示 Play 商店并显示错误(项目不可用，它处于非 Activity 状态(故意用于负面测试))。

04-03 20:21:14.371: D/com.satalyst.android.ui.PurchaseAction(10129): Launching purchase flow request for sku: demo_test
04-03 20:21:14.371: D/IabHelper(10129): Starting in-app billing setup.
04-03 20:21:14.446: D/IabHelper(10129): Billing service connected.
04-03 20:21:14.446: D/IabHelper(10129): Checking for in-app billing 3 support.
04-03 20:21:14.461: D/IabHelper(10129): In-app billing version 3 supported for com.satalyst.android
04-03 20:21:14.476: D/IabHelper(10129): Subscriptions AVAILABLE.
04-03 20:21:14.476: D/IabHelper(10129): Starting async operation: launchPurchaseFlow
04-03 20:21:14.476: D/IabHelper(10129): Constructing buy intent for demo_test, item type: inapp
04-03 20:21:14.506: D/IabHelper(10129): Launching buy intent for demo_test. Request code: 1
04-03 20:21:14.846: D/IabHelper(10129): Ending async operation: launchPurchaseFlow
04-03 20:21:14.846: E/IabHelper(10129): In-app billing error: Null data in IAB activity result.
04-03 20:21:14.846: D/com.satalyst.android.ui.PurchaseAction$PurchaseCompleteListener(10129): Received purchase code: -1002
04-03 20:21:14.846: E/com.satalyst.android.ui.PurchaseAction$PurchaseCompleteListener(10129): Unable to purchase item: demo_test due to error: -1002 with message: Null data in IAB result (response: -1002:Bad response received)
04-03 20:21:14.856: I/ACTIVITY-RESUME(10129): com.satalyst.android.ui.MainActivity@4151b760
04-03 20:21:15.526: D/com.satalyst.android.ui.MainActivity(10129): Request update of cache
04-03 20:21:15.601: D/com.satalyst.android.ui.HomeFragment(10129): Payload currently selected: demopayload updating UI
04-03 20:21:16.091: E/WindowManager(10129): Activity com.satalyst.android.ui.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@41a9d218 that was originally added here
04-03 20:21:16.091: E/WindowManager(10129): android.view.WindowLeaked: Activity com.satalyst.android.ui.MainActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@41a9d218 that was originally added here
04-03 20:21:16.091: E/WindowManager(10129):     at android.view.ViewRootImpl.<init>(ViewRootImpl.java:386)
04-03 20:21:16.091: E/WindowManager(10129):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:267)
04-03 20:21:16.091: E/WindowManager(10129):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215)
04-03 20:21:16.091: E/WindowManager(10129):     at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140)
04-03 20:21:16.091: E/WindowManager(10129):     at android.view.Window$LocalWindowManager.addView(Window.java:537)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.Dialog.show(Dialog.java:278)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.AlertDialog$Builder.show(AlertDialog.java:932)
04-03 20:21:16.091: E/WindowManager(10129):     at com.satalyst.android.ui.PurchaseAction.showSendEmailErrorDialog(PurchaseAction.java:176)
04-03 20:21:16.091: E/WindowManager(10129):     at com.satalyst.android.ui.PurchaseAction.access$5(PurchaseAction.java:152)
04-03 20:21:16.091: E/WindowManager(10129):     at com.satalyst.android.ui.PurchaseAction$PurchaseCompleteListener.onIabPurchaseFinished(PurchaseAction.java:240)
04-03 20:21:16.091: E/WindowManager(10129):     at com.satalyst.android.iab.IabHelper.handleActivityResult(IabHelper.java:434)
04-03 20:21:16.091: E/WindowManager(10129):     at com.satalyst.android.ui.MainActivity.onActivityResult(MainActivity.java:225)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.Activity.dispatchActivityResult(Activity.java:4649)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.ActivityThread.deliverResults(ActivityThread.java:2988)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.ActivityThread.handleSendResult(ActivityThread.java:3035)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.ActivityThread.access$1100(ActivityThread.java:127)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1189)
04-03 20:21:16.091: E/WindowManager(10129):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-03 20:21:16.091: E/WindowManager(10129):     at android.os.Looper.loop(Looper.java:137)
04-03 20:21:16.091: E/WindowManager(10129):     at android.app.ActivityThread.main(ActivityThread.java:4507)
04-03 20:21:16.091: E/WindowManager(10129):     at java.lang.reflect.Method.invokeNative(Native Method)
04-03 20:21:16.091: E/WindowManager(10129):     at java.lang.reflect.Method.invoke(Method.java:511)
04-03 20:21:16.091: E/WindowManager(10129):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
04-03 20:21:16.091: E/WindowManager(10129):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
04-03 20:21:16.091: E/WindowManager(10129):     at dalvik.system.NativeStart.main(Native Method)

此时 Play 商店应用程序仍然显示(在前台)。在我看来，错误似乎是由于操作返回到调用 Activity (没有焦点)而引起的，导致附加对话框时出现错误(创建后立即泄漏)。在 Play 商店 Activity 的错误中按“确定”会导致以下结果(为我的应用程序创建了一个新 Activity 并给予了焦点)。

04-03 20:21:18.296: I/com.satalyst.android.ui.MainActivity(10129): Loading selected payload: demopayload
04-03 20:21:18.341: I/ACTIVITY-RESUME(10129): com.satalyst.android.ui.MainActivity@41adf048
04-03 20:21:18.601: D/com.satalyst.android.ui.MainActivity(10129): Request update of cache
04-03 20:21:18.626: D/com.satalyst.android.ui.HomeFragment(10129): Payload currently selected: demopayload updating UI

解决这个问题让我感到难过，因为我想在发生购买错误时在我的 Activity 中显示一个对话框，允许他们通过电子邮件向我发送详细信息，以便我可以优先帮助客户解决购买错误。我确信我可以做一些 hack 修复，也许在错误发生并过早返回时保留详细信息，然后在每次恢复 Activity 时检查是否存在持续的故障并采取适当的措施；然而，这感觉像是一个令人讨厌的变通办法。

没有对话的堆栈跟踪:

04-03 21:15:40.236: D/com.satalyst.android.ui.PurchaseAction(12415): Launching purchase flow request for sku: demo_test
04-03 21:15:40.236: D/IabHelper(12415): Starting async operation: launchPurchaseFlow
04-03 21:15:40.236: D/IabHelper(12415): Constructing buy intent for demo_test, item type: inapp
04-03 21:15:40.276: D/IabHelper(12415): Launching buy intent for demo_test. Request code: 1
04-03 21:15:40.806: D/IabHelper(12415): Ending async operation: launchPurchaseFlow
04-03 21:15:40.806: E/IabHelper(12415): In-app billing error: Null data in IAB activity result.
04-03 21:15:40.806: D/com.satalyst.android.ui.PurchaseAction$PurchaseCompleteListener(12415): Received purchase code: -1002
04-03 21:15:40.811: E/com.satalyst.android.ui.PurchaseAction$PurchaseCompleteListener(12415): Unable to purchase item: demo_test due to error: -1002 with message: Null data in IAB result (response: -1002:Bad response received)
04-03 21:15:40.811: I/ACTIVITY-RESUME(12415): com.satalyst.android.ui.MainActivity@414cb8e0
04-03 21:15:41.681: I/com.satalyst.android.ui.MainActivity(12415): Destroying MainActivity: com.satalyst.android.ui.MainActivity@414cb8e0
04-03 21:15:42.396: I/ACTIVITY-RESUME(12415): com.satalyst.android.ui.MainActivity@414d8f5

触发购买的代码:

/**
 * Stage #1, ensure the server is contactable and has correct protocol
 * version
 */
@Override
public void onClick() {
    // Verify server can be communicated with
    final ProgressDialog dlg = new ProgressDialog(activity);
    dlg.setMessage(activity.getString(R.string.preparing_purchase));
    dlg.setIndeterminate(true);
    dlg.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    dlg.show();
    AsyncTask.execute(new Runnable() {
        @Override
        public void run() {
            try {
                versionAgent.checkCloudServiceVersion();
                dlg.dismiss();
                purchasePayload(payload);
            } catch (VersionQueryException e) {
                activity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(
                                activity,
                                activity.getResources().getString(
                                        R.string.query_version_error),
                                Toast.LENGTH_LONG).show();
                    }
                });
                Log.e(this,
                        "Purchase disabled, could not query service version");
            } catch (VersionMismatchException e) {
                activity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(
                                activity,
                                activity.getResources()
                                        .getString(
                                                R.string.query_version_update_required),
                                Toast.LENGTH_LONG).show();
                    }
                });
                Log.e(this, "Purchase disabled, update is required");
            }
        }
    });
}

/**
 * Stage #2, trigger IAB purchase of given payload
 * 
 * @param payload
 */
private void purchasePayload(@Nonnull final Payload payload) {
    final String sku = payload.getSku();
    Log.d(this, "Launching purchase flow request for sku: " + sku);
    final IabHelper helper = ((MainActivity) activity).helper;
    final OnIabPurchaseFinishedListener onPurchasedListener = new PurchaseCompleteListener();

    if (!helper.isSetup()) {
        helper.startSetup(new OnIabSetupFinishedListener() {
            @Override
            public void onIabSetupFinished(IabResult result) {
                helper.launchPurchaseFlow(activity, sku,
                        BillingConstants.PURCHASE_REQUEST,
                        onPurchasedListener);
            }
        });
    } else {
        helper.launchPurchaseFlow(activity, sku,
                BillingConstants.PURCHASE_REQUEST, onPurchasedListener);
    }
}

MainActivity代码中的onResume/onPause/onActivityResult和onDestroy:

/**
 * {@inheritDoc}
 */
@Override
protected void onResume() {
    super.onResume();
    Log.i("ACTIVITY-RESUME", this.toString());
    eventBus.register(this);
}

/**
 * {@inheritDoc}
 */
@Override
protected void onPause() {
    super.onPause();
    eventBus.unregister(this);
}

@Override
protected void onDestroy() {
    super.onDestroy();
    Log.i(this, "Destroying MainActivity: "+ this);
}

/**
 * {@inheritDoc}
 */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (helper == null
            || !helper.handleActivityResult(requestCode, resultCode, data)) {
        super.onActivityResult(requestCode, resultCode, data);
    }
}

OnIabPurchaseFinishedListener 通过 helper 在 onActivityResult 中触发:

private final class PurchaseCompleteListener implements
        OnIabPurchaseFinishedListener {

    @Override
    public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
        Log.d(this, "Received purchase code: " + result.getResponse());

        if (result.isSuccess()) {
            // Removed this code since else is triggered in trouble case.
        } else {
            int responseCode = result.getResponse();
            switch (responseCode) {
            case IabHelper.BILLING_RESPONSE_RESULT_USER_CANCELED:
                Log.i(this, "Billing response received: User Canceled");
                // Do nothing
                break;
            default:
                String message = result.getMessage();
                Log.e(this, "Unable to purchase item: " + payload.getSku()
                        + " due to error: " + responseCode
                        + " with message: " + message);
                break;
            }
        }
    }
}

list XML 中的 Activity 定义

    <activity
        android:name="com.satalyst.android.ui.MainActivity"
        android:label="@string/app_name"
        android:launchMode="singleInstance"
        android:screenOrientation="portrait"
        android:theme="@android:style/Theme.Holo.Light" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

显示 Activity 过早销毁的错误日志(完整):

D/IabHelper( 4462): Launching buy intent for demo_test. Request code: 1
I/power   ( 2004): *** acquire_dvfs_lock : lockType : 1  freq : 1200000 
I/ActivityManager( 2004): START {intent.toShortString} from pid -1
D/PowerManagerService( 2004): acquireDVFSLockLocked : type : DVFS_MIN_LIMIT  frequency : 1200000  uid : 1000  pid : 2004  tag : ActivityManager
W/ActivityManager( 2004): mDVFSLock.acquire()
D/dalvikvm( 2004): JIT code cache reset in 2 ms (1048532 bytes 1/0)
D/dalvikvm( 2004): GC_CONCURRENT freed 1981K, 18% free 19557K/23623K, paused 3ms+11ms
I/ALSAModule( 1837): Terminated ALSA PLAYBACK device hifi
W/WifiStateTracker( 2004): getNetworkInfo : NetworkInfo: type: wifi[], state: UNKNOWN/IDLE, reason: (unspecified), extra: (none), roaming: false, failover: false, isAvailable: false
E/WifiP2pStateTracker( 2004): getNetworkInfo : NetworkInfo: type: wifi_p2p[], state: UNKNOWN/IDLE, reason: (unspecified), extra: (none), roaming: false, failover: false, isAvailable: false
I/SurfaceFlinger( 1834): id=48 Removed idx=3 Map Size=4
I/SurfaceFlinger( 1834): id=48 Removed idx=-2 Map Size=4
D/dalvikvm( 4462): GC_CONCURRENT freed 12727K, 37% free 44670K/69959K, paused 2ms+4ms
D/ActivityManager( 2004): Trying to launch applicationName
V/GCMRegistrar( 3130): Is registered on server: true
W/WifiStateTracker( 2004): getNetworkInfo : NetworkInfo: type: wifi[], state: UNKNOWN/IDLE, reason: (unspecified), extra: (none), roaming: false, failover: false, isAvailable: false
E/WifiP2pStateTracker( 2004): getNetworkInfo : NetworkInfo: type: wifi_p2p[], state: UNKNOWN/IDLE, reason: (unspecified), extra: (none), roaming: false, failover: false, isAvailable: false
I/SurfaceFlinger( 1834): id=49(3) createSurface 0x398ec (1x1),1 flag=400
D/Finsky  ( 3130): [1] SelfUpdateScheduler.checkForSelfUpdate: Skipping DFE self-update. Local Version [8016014] >= Server Version [-1]
W/InputManagerService( 2004): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@4211eaa0 (uid=10110 pid=4462)
I/ActivityManager( 2004): Displayed shortComponentName: +105ms
V/yamaha::media::VolumeCtrl( 1837): VolumeCtrl::createVolume()
V/yamaha::media::VolumeCtrl( 1837): VolumeCtrl::setVolume()
D/yamaha::media::VolumeCtrl( 1837): VolumeCtrl::setVolume() FM Playback: Ready
D/yamaha::media::VolumeCtrl( 1837): VolumeCtrl::setVolume() VoiceCall: Ready
W/Finsky  ( 3130): [1] CarrierParamsAction.run: Saving carrier billing params failed.
E/Finsky  ( 3130): [184] FileBasedKeyValueStore.delete: Attempt to delete 'params1Fzx-vZz47HyPCTxqb1ncg' failed!
D/Finsky  ( 3130): [1] GetBillingCountriesAction.run: Skip getting fresh list of billing countries.
I/SurfaceFlinger( 1834): id=47 Removed idx=1 Map Size=4
I/SurfaceFlinger( 1834): id=47 Removed idx=-2 Map Size=4
I/power   ( 2004): *** release_dvfs_lock : lockType : 1 
D/PowerManagerService( 2004): releaseDVFSLockLocked : all DVFS_MIN_LIMIT are released 
W/ActivityManager( 2004): mDVFSLock.release()
I/ACTIVITY-IS-FINISHING( 4462): false com.satalyst.android.ui.MainActivity@416d9098
I/ACTIVITY-IS-FINISHING( 4462): false com.satalyst.android.ui.MainActivity@416d9098
I/ACTIVITY-IS-FINISHING( 4462): false com.satalyst.android.ui.MainActivity@416d9098
I/ACTIVITY-DESTROY( 4462): com.satalyst.android.ui.MainActivity@416d9098
D/com.satalyst.android.ui.MainActivity( 4462): Destroying helper.
D/IabHelper( 4462): Disposing.
D/IabHelper( 4462): Unbinding from service.
D/STATUSBAR-NetworkController( 2127): onDataActivity: direction=3
E/DataRouter( 1832): usb connection is true 
E/DataRouter( 1832): DSR is ON. Don't send DTR ON.
E/Finsky  ( 3130): [1] CheckoutPurchase.setError: type=PURCHASE_FAILED, code=-1, permissionCode=4, message=The item you requested is not available for purchase

Answer 1

我在尝试实现 IAP 时遇到过类似的问题。

我的 Activity 已将启动模式设置为“singleInstance”，这禁止系统在其任务中启动新 Activity。

似乎 startIntentSenderForResult 试图在其任务中启动一个新 Activity ，但失败并因此返回 null。

当我将启动模式设置为限制较少的“singleTop”时，这个问题就消失了。