android - 无法修复 AsyncTask 崩溃 : PendingIntent or SSL connection or other causes?

Question

我有一个几年前开发的 Android 应用程序。它仍在 Play 商店中，我会不断更新它以修复 Eclipse 和旧版 Android 开发工具(我从未使用过 Android Studio)的小错误。

我的应用程序在第一次启动时开始从服务器下载数据并将其保存在内部数据库中(我使用了 AyncTask，这里是源代码:https://pastebin.com/cKqXNYxm)。在大多数手机上一切顺利。

但在某些手机上下载失败，用户无法使用该应用程序。我得到了其中一部手机，并将其连接到 LogCat 以查看会发生什么。这是日志:

04-04 21:07:50.238: I/CastMediaRouteProvider(2082): in onDiscoveryRequestChanged: request=DiscoveryRequest{ selector=MediaRouteSelector{ controlCategories=[android.media.intent.category.LIVE_VIDEO, android.media.intent.category.REMOTE_PLAYBACK, com.google.android.gms.cast.CATEGORY_CAST/08FF1091, com.google.android.gms.cast.CATEGORY_CAST/4574A331] }, activeScan=false, isValid=true }
04-04 21:07:50.251: W/CastMediaRouteProvider(2082): Not a Cast compatible category: android.media.intent.category.LIVE_VIDEO
04-04 21:07:50.251: I/CastMediaRouteProvider(2082): Logging initial network connection state.
04-04 21:07:50.347: I/CastMediaRouteProvider(2082): Network connectivity changed
04-04 21:07:50.372: I/DeviceScanner(2082): [MDNS] Filter criteria: 08FF1091,CC1AD845,4574A331
04-04 21:07:50.372: I/DeviceScanner(2082): [MDNS] updateScannerState: No filter criteria was added.
04-04 21:07:50.372: I/DeviceScanner(2082): [MDNS] updateScannerState: No filter criteria was removed.
04-04 21:07:50.479: W/MdnsClient_Cast(2082): #acquireLock. Multicast lock not held. Acquiring. Subtypes:"4574A331,CC1AD845,08FF1091"
04-04 21:07:50.501: I/DeviceScanner(2082): [CastNearby] Filter criteria: 08FF1091,CC1AD845,4574A331
04-04 21:07:50.501: I/DeviceScanner(2082): [CastNearby] updateScannerState: No filter criteria was added.
04-04 21:07:50.501: I/DeviceScanner(2082): [CastNearby] updateScannerState: No filter criteria was removed.
04-04 21:08:08.860: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:08:09.020: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:08:09.063: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:08:09.085: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:08:09.100: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:08:09.135: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:08:09.265: I/art(1879): Background sticky concurrent mark sweep GC freed 49907(2MB) AllocSpace objects, 18(288KB) LOS objects, 11% free, 22MB/26MB, paused 7.887ms total 67.577ms
04-04 21:08:10.048: I/Icing(2082): Indexing 26F5DFBF7CB0FE13B1ED2D2D8BA3F397144A57D1 from com.google.android.gms
04-04 21:08:10.078: W/Icing(2082): CLD2 bad utf8
04-04 21:08:10.114: I/Icing(2082): Indexing done 26F5DFBF7CB0FE13B1ED2D2D8BA3F397144A57D1
04-04 21:08:10.546: I/WearableService(1879): Wear is not allowed to run on this device. Not starting Wear service.
04-04 21:08:10.547: D/WearableService(1879): callingUid 10020, callindPid: 1879
04-04 21:08:23.830: I/CastMediaRouteProvider(2082): in onDiscoveryRequestChanged: request=null
04-04 21:08:23.840: W/MdnsClient_Cast(2082): Multicast lock held. Releasing. Subtypes:"4574A331,CC1AD845,08FF1091"
04-04 21:08:23.872: W/MdnsClient(2082): unicast receiver thread is already dead.
04-04 21:09:06.643: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:09:06.814: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:06.848: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:06.881: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:06.898: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:06.958: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:09:07.841: I/Icing(2082): Indexing 26F5DFBF7CB0FE13B1ED2D2D8BA3F397144A57D1 from com.google.android.gms
04-04 21:09:07.864: W/Icing(2082): CLD2 bad utf8
04-04 21:09:07.876: I/Icing(2082): Indexing done 26F5DFBF7CB0FE13B1ED2D2D8BA3F397144A57D1
04-04 21:09:43.012: W/GCoreFlp(1879): No location to return for getLastLocation()
04-04 21:09:51.519: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:09:51.629: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:51.674: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:51.712: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:51.767: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:09:51.826: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:09:52.662: I/Icing(2082): Indexing 26F5DFBF7CB0FE13B1ED2D2D8BA3F397144A57D1 from com.google.android.gms
04-04 21:09:52.682: W/Icing(2082): CLD2 bad utf8
04-04 21:09:52.699: I/Icing(2082): Indexing done 26F5DFBF7CB0FE13B1ED2D2D8BA3F397144A57D1
04-04 21:11:36.806: D/BluetoothAdapter(1879): 341170672: getState() :  mService = null. Returning STATE_OFF
04-04 21:13:50.296: V/NativeCrypto(1879): Read error: ssl=0xb84d38c0: I/O error during system call, Connection reset by peer
04-04 21:13:50.315: V/NativeCrypto(1879): SSL shutdown failed: ssl=0xb84d38c0: I/O error during system call, Broken pipe
04-04 21:13:50.333: W/GCM(1879): Lowering wifi heartbeat interval 1 notch to 230000, good=0 bad=2
04-04 21:18:17.073: D/BluetoothAdapter(1879): 341170672: getState() :  mService = null. Returning STATE_OFF
04-04 21:18:20.076: D/BluetoothAdapter(1879): 341170672: getState() :  mService = null. Returning STATE_OFF
04-04 21:18:20.528: I/Authzen(2082): [DeviceStateSyncManager] Device state fast sync is disabled
04-04 21:18:20.581: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.582: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.582: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.582: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.582: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.583: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.583: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.583: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.583: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:18:20.586: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:27:48.016: D/BluetoothAdapter(1879): 341170672: getState() :  mService = null. Returning STATE_OFF
04-04 21:29:01.013: D/BluetoothAdapter(1879): 341170672: getState() :  mService = null. Returning STATE_OFF
04-04 21:29:03.196: I/Authzen(2082): [DeviceStateSyncManager] Device state fast sync is disabled
04-04 21:29:03.233: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.233: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.233: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.234: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.234: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.234: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.235: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.235: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.235: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:03.236: I/DeviceCache(2082): Unable to convert the the network interface's MAC Address to string. MAC address cannot be null.
04-04 21:29:04.014: D/BluetoothAdapter(1879): 341170672: getState() :  mService = null. Returning STATE_OFF
04-04 21:29:10.297: W/GeofencerStateMachine(1879): Ignoring removeGeofence because network location is disabled.
04-04 21:29:11.075: E/WorkSourceUtil(2082): Could not find package: it.myapp.app
04-04 21:29:11.076: I/Icing(2082): doRemovePackageData it.myapp.app
04-04 21:29:11.133: I/LocationSettingsChecker(2082): Removing dialog suppression flag for package it.myapp.app
04-04 21:29:11.138: D/Wear_Controller(2082): Received broadcast action=android.intent.action.PACKAGE_REMOVED and uri=it.myapp.app
04-04 21:29:11.295: E/NetworkScheduler.SR(1879): Invalid parameter app
04-04 21:29:11.296: E/NetworkScheduler.SR(1879): Invalid package name : Perhaps you didn't include a PendingIntent in the extras?
04-04 21:29:11.461: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:29:11.467: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:29:11.475: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:29:12.207: I/WearableService(1879): Wear is not allowed to run on this device. Not starting Wear service.
04-04 21:29:12.207: D/WearableService(1879): callingUid 10020, callindPid: 1879
04-04 21:29:12.482: I/Icing(2082): Indexing 11154CFA753891357620E30C887251401ECA34E6 from com.google.android.gms
04-04 21:29:12.517: I/Icing(2082): Indexing done 11154CFA753891357620E30C887251401ECA34E6
04-04 21:29:18.135: W/PlatformStatsUtil(2082): Could not retrieve Usage & Diagnostics setting. Giving up.
04-04 21:29:22.585: E/NetworkScheduler.SR(1879): Invalid parameter app
04-04 21:29:22.585: E/NetworkScheduler.SR(1879): Invalid package name : Perhaps you didn't include a PendingIntent in the extras?
04-04 21:29:22.605: I/iu.Environment(2082): update battery state; isPlugged? true*
04-04 21:29:22.660: I/iu.FingerprintManager(2082): Start processing all media
04-04 21:29:22.870: I/iu.FingerprintManager(2082): Start processing media store URI: content://media/external/images/media
04-04 21:29:22.980: I/iu.UploadsManager(2082): num queued entries: 0
04-04 21:29:23.041: I/iu.UploadsManager(2082): num updated entries: 0
04-04 21:29:23.086: W/SQLiteConnectionPool(2082): A SQLiteConnection object for database '/data/data/com.google.android.gms/databases/auto_complete_suggestions.db' was leaked!  Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
04-04 21:29:23.091: W/SQLiteConnectionPool(2082): A SQLiteConnection object for database '/data/data/com.google.android.gms/databases/help_responses.db.18' was leaked!  Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
04-04 21:29:23.094: W/SQLiteConnectionPool(2082): A SQLiteConnection object for database '/data/data/com.google.android.gms/databases/metrics.db' was leaked!  Please fix your application to end transactions in progress properly and to close the database when it is no longer needed.
04-04 21:29:23.107: I/iu.SyncManager(2082): NEXT; no task
04-04 21:29:23.171: W/PlatformStatsUtil(2082): Could not retrieve Usage & Diagnostics setting. Giving up.
04-04 21:29:23.208: I/iu.FingerprintManager(2082): Start processing media store URI: content://media/external/video/media
04-04 21:29:23.214: I/iu.FingerprintManager(2082): Start processing media store URI: content://media/phoneStorage/images/media
04-04 21:29:23.216: I/iu.FingerprintManager(2082): Start processing media store URI: content://media/phoneStorage/video/media
04-04 21:29:23.237: I/iu.FingerprintManager(2082): Finished generating fingerprints; 0,577 seconds
04-04 21:29:23.238: I/iu.FingerprintManager(2082):   numSeen=1872 numGenerated=3 numDeleted=11 numFailed=0
04-04 21:29:33.041: W/PlatformStatsUtil(2082): Could not retrieve Usage & Diagnostics setting. Giving up.
04-04 21:29:35.099: D/Wear_Controller(2082): Received broadcast action=android.intent.action.PACKAGE_ADDED and uri=it.myapp.app
04-04 21:29:35.251: I/WearableService(1879): Wear is not allowed to run on this device. Not starting Wear service.
04-04 21:29:35.254: D/WearableService(1879): callingUid 10020, callindPid: 1879
04-04 21:29:35.279: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:29:35.295: I/Icing(2082): Usage reports 0 indexed 0 rejected 0 imm upload false
04-04 21:29:35.320: W/IcingInternalCorpora(2082): getNumBytesRead when not calculated.
04-04 21:29:36.306: I/Icing(2082): Indexing 11154CFA753891357620E30C887251401ECA34E6 from com.google.android.gms
04-04 21:29:36.402: I/Icing(2082): Indexing done 11154CFA753891357620E30C887251401ECA34E6
04-04 21:29:40.870: W/PlatformStatsUtil(2082): Could not retrieve Usage & Diagnostics setting. Giving up.

我认为问题可能出在这些消息上:

04-04 21:29:11.295: E/NetworkScheduler.SR(1879): Invalid parameter app
04-04 21:29:11.296: E/NetworkScheduler.SR(1879): Invalid package name : Perhaps you didn't include a PendingIntent in the extras?

...或者可能与 SSL 连接有关:

04-04 21:13:50.296: V/NativeCrypto(1879): Read error: ssl=0xb84d38c0: I/O error during system call, Connection reset by peer
04-04 21:13:50.315: V/NativeCrypto(1879): SSL shutdown failed: ssl=0xb84d38c0: I/O error during system call, Broken pipe

我不知道可能是什么问题。我尝试了几种设备，结果如下:

它适用于以下手机:

• 华为:6.0
• 三星 A5:6.0.1
• 一加 2:6.0.1
• 华硕 Zenphone:6.1
• 一加:3 7.0
• HTC One:7.0

它不适用于以下手机(它在 AsynTask 执行期间崩溃):

• 三星 S3 Neo 4.4.2
• 华硕 5.0.2
• 三星 S2 5.1.1
• 三星 Neo 5.1.1

关于故障排除可能需要了解的另一件事是，大约 2 个月前，我在我的主机上启用了 SSL 证书，应用程序从中获取数据。

我已经搜索过关于这个问题的类似问题，但没有一个对我有帮助。由于在大多数手机上该应用程序都可以正常运行，所以我不明白为什么在旧版本的 Android 上它会因该 LogCat 而崩溃。有什么想法吗？

Answer 1

AsynTask 错误的原因是 DefaultHttpClient 与 SSL 连接的使用。自 API 级别 22 起，Android 已弃用 Apache 模块，其中包括 DefaultHttpClient。我解决了替换 doInBackground 方法中的一些代码的问题。

之前:

@Override
protected String doInBackground(String... urls) {
    int timeout = 10;
    int i, count = 0;

    BasicHttpParams basicParams = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(basicParams, timeout * 1000);
    HttpConnectionParams.setSoTimeout(basicParams, timeout * 1000 );
    DefaultHttpClient client = new DefaultHttpClient(basicParams);

    StringBuilder stringBuilder = new StringBuilder();
    for (i = 0; i < urls.length; i++) {
        HttpGet request = new HttpGet(urls[i]);
        request.addHeader("Cache-Control", "no-cache");

        try {
            HttpResponse response = client.execute(request);
            HttpEntity entity = response.getEntity();
            InputStreamReader in = new InputStreamReader(entity.getContent());
            BufferedReader reader = new BufferedReader(in);
            String line = "";

            while ((line = reader.readLine()) != null) {
                stringBuilder.append(line);

                count++;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        publishProgress(count * 100 / urls.length);
    }

    return stringBuilder.toString();
}

之后:

public static final int CONNECTON_TIMEOUT_MILLISECONDS = 60000;

@Override
protected String doInBackground(String... urls) {
    int i, count = 0;
    String urlsString = "";

    for (i = 0; i < urls.length; i++) {
        try {
            urlsString += executeGetHttpRequest(urls[i]);
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }                   
        count++;

        publishProgress(count * 100 / urls.length);
    }
    return urlsString;
}

public static String executeGetHttpRequest(final String path) throws ClientProtocolException, IOException {
    String result = null;
    HttpURLConnection urlConnection = null;
    try {
        URL url = new URL(path);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setConnectTimeout(CONNECTON_TIMEOUT_MILLISECONDS);
        urlConnection.setReadTimeout(CONNECTON_TIMEOUT_MILLISECONDS);
        result = readStream(urlConnection.getInputStream());
    } finally {
        if (urlConnection != null) {
            urlConnection.disconnect();
        }
    }
    return result;
}

private static String readStream(InputStream is) throws IOException {
    final BufferedReader reader = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
    StringBuilder total = new StringBuilder();
    String line;
    while ((line = reader.readLine()) != null) {
        total.append(line);
    }
    if (reader != null) {
        reader.close();
    }
    return total.toString();
}

多亏了这个answer .

上面的代码是关于 GET 请求的。由于这个 answer，我还解决了 POST 请求时 AsyncTask 的问题.