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我对上述错误进行了一些研究，似乎大多数人有两种方法可以解决：

  1. 重新导入 R
  2. 关闭并重新启动eclipse

但是我两者都做了，但我仍然得到同样的错误。有谁知道任何其他方法来克服这个错误？

我在想虽然它可能是我的代码。我正在尝试编译此处找到的蓝牙文件示例

我已经把所有东西都带过来了，但我仍然遇到 36 个错误，其中大多数是无法解决为字段或类型错误。

这是他们如何称呼吐司线：

 Toast.makeText(this, R.string.error_bluetooth_not_supported, Toast.LENGTH_SHORT).show();

在 values 文件夹中找到了 strings.xml：

    <?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">BLE Sample</string>
    <string name="ble_not_supported">BLE is not supported</string>
    <string name="label_data">Data:</string>
    <string name="label_device_address">Device address:</string>
    <string name="label_state">State:</string>
    <string name="no_data">No data</string>
    <string name="connected">Connected</string>
    <string name="disconnected">Disconnected</string>
    <string name="title_devices">BLE Device Scan</string>
    <string name="error_bluetooth_not_supported">Bluetooth not supported.</string>

    <string name="unknown_device">Unknown device</string>
    <string name="unknown_characteristic">Unknown characteristic</string>
    <string name="unknown_service">Unknown service</string>

    <!-- Menu items -->
    <string name="menu_connect">Connect</string>
    <string name="menu_disconnect">Disconnect</string>
    <string name="menu_scan">Scan</string>
    <string name="menu_stop">Stop</string>
</resources>

从字面上看，我已经进入了我的第一个 android 开发阶段，这对我来说是全新的。我认为使用他们提供的示例代码可以帮助我更好地了解蓝牙系统的工作原理。

谁能帮我克服这个错误？

我应该补充一点，这个列表中的每个项目都有一个错误。任何时候我用 R.string 调用任何东西。它得到同样的错误。从下午 1:25 开始的 Logcat：

09-06 13:25:20.901: E/(526): W/virtual loc_api_adapter_err LocApiAdapter::enableData(int): default implementation invoked
09-06 13:25:20.901: E/(526): W/virtual loc_api_adapter_err LocApiAdapter::setAPN(char*, int): default implementation invoked
09-06 13:25:20.911: D/PicasaUploaderSyncManager(25851): active network: NetworkInfo: type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: "SOL2", roaming: false, failover: false, isAvailable: true
09-06 13:25:20.921: D/GCM(2565): GcmService start Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x8000010 cmp=com.google.android.gms/.gcm.GcmService (has extras) } android.net.conn.CONNECTIVITY_CHANGE
09-06 13:25:21.051: D/ConnectivityService(526): handleInetConditionHoldEnd: net=1, condition=100, published condition=0
09-06 13:25:21.542: D/Tethering(526): MasterInitialState.processMessage what=3
09-06 13:25:21.642: E/(526): W/virtual loc_api_adapter_err LocApiAdapter::enableData(int): default implementation invoked
09-06 13:25:21.642: E/(526): W/virtual loc_api_adapter_err LocApiAdapter::setAPN(char*, int): default implementation invoked
09-06 13:25:21.662: D/GCM(2565): GcmService start Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x8000010 cmp=com.google.android.gms/.gcm.GcmService (has extras) } android.net.conn.CONNECTIVITY_CHANGE
09-06 13:25:22.102: D/ConnectivityService(526): handleInetConditionHoldEnd: net=1, condition=100, published condition=100
09-06 13:30:01.245: V/DigitalWidgetViewsFactory(6453): DigitalWidget sets next alarm string to null
09-06 13:36:19.083: I/ActivityManager(526): No longer want com.google.android.talk (pid 26303): empty for 1801s
09-06 13:36:31.455: V/BackupManagerService(526): Running a backup pass
09-06 13:36:31.455: V/BackupManagerService(526): clearing pending backups
09-06 13:36:31.455: V/PerformBackupTask(526): Beginning backup of 1 targets
09-06 13:36:31.485: V/BackupServiceBinder(526): doBackup() invoked
09-06 13:36:31.485: D/PerformBackupTask(526): invokeAgentForBackup on @pm@
09-06 13:36:31.495: I/PerformBackupTask(526): no backup data written; not calling transport
09-06 13:36:31.506: D/PerformBackupTask(526): starting agent for backup of BackupRequest{pkg=com.android.providers.settings}
09-06 13:36:31.506: D/BackupManagerService(526): awaiting agent for ApplicationInfo{4202bfe0 com.android.providers.settings}
09-06 13:36:31.506: D/BackupManagerService(526): agentConnected pkg=com.android.providers.settings agent=android.app.backup.BackupAgent$BackupServiceBinder@42081138
09-06 13:36:31.506: I/BackupManagerService(526): got agent android.app.backup.BackupAgent$BackupServiceBinder@42081138
09-06 13:36:31.506: D/PerformBackupTask(526): invokeAgentForBackup on com.android.providers.settings
09-06 13:36:31.516: V/BackupServiceBinder(526): doBackup() invoked
09-06 13:36:31.526: W/SettingsBackupAgent(526): Couldn't backup /data/misc/wifi/ipconfig.txt
09-06 13:36:31.526: I/PerformBackupTask(526): no backup data written; not calling transport
09-06 13:36:31.526: I/PerformBackupTask(526): Backup pass finished.
09-06 13:39:59.999: I/ActivityManager(526): No longer want com.google.android.music:main (pid 26385): empty for 1849s
09-06 13:40:00.099: W/ActivityManager(526): Scheduling restart of crashed service com.google.android.music/.playback.MusicPlaybackService in 5000ms
09-06 13:40:05.134: I/ActivityManager(526): Start proc com.google.android.music:main for service com.google.android.music/.playback.MusicPlaybackService: pid=27303 uid=10041 gids={50041, 3003, 1015, 1028}
09-06 13:40:05.214: I/MusicStore(27303): Database version: 70
09-06 13:40:05.274: D/dalvikvm(27303): GC_CONCURRENT freed 315K, 4% free 9097K/9448K, paused 3ms+9ms, total 39ms
09-06 13:40:05.274: D/dalvikvm(27303): WAIT_FOR_CONCURRENT_GC blocked 2ms
09-06 13:40:05.284: D/dalvikvm(27303): WAIT_FOR_CONCURRENT_GC blocked 5ms
09-06 13:40:05.364: D/SystemUtils(27303): getSystemProperty: lpa.decode=null
09-06 13:40:05.364: D/CacheService(27303): onCreate
09-06 13:40:05.374: D/CacheService(27303): onBind
09-06 13:40:05.384: I/LocalDevicePlayback(27303): Streaming client created.
09-06 13:40:06.445: D/dalvikvm(27303): GC_CONCURRENT freed 181K, 3% free 9337K/9580K, paused 4ms+4ms, total 30ms
09-06 13:40:06.535: I/MediaStoreImporter(27303): Update: incremental Added music: 0 Updated music: 0 Deleted music: 0 Created playlists: 0 Updated playlists: 0 Deleted playlists: 0 Inserted playlist items: 0 Deleted playlist items: 0 Removed orphaned playlist items: 0
09-06 13:40:10.459: I/MusicLeanback(27303): Conditions not met for autocaching.
09-06 13:40:10.459: I/MusicLeanback(27303): Stop autocaching.
09-06 13:40:20.549: D/GCM(2565): Ignoring attempt to send heartbeat on dead connection.
09-06 13:40:59.997: I/ActivityManager(526): No longer want android.process.acore (pid 26550): empty for 1807s
09-06 13:45:01.283: V/DigitalWidgetViewsFactory(6453): DigitalWidget sets next alarm string to null
09-06 13:48:16.403: I/EventLogService(2565): Aggregate from 1378470317827 (log), 1378469896229 (data)
09-06 13:48:16.533: I/ServiceDumpSys(2565): dumping service [account]
09-06 13:50:23.497: I/jdwp(24586): Ignoring second debugger -- accepting and dropping
09-06 13:50:23.507: I/jdwp(20948): Ignoring second debugger -- accepting and dropping
09-06 13:50:34.378: D/dalvikvm(526): GC_CONCURRENT freed 3407K, 27% free 23292K/31488K, paused 11ms+8ms, total 146ms
09-06 13:52:43.224: D/ChildProcessLauncher(5790): Setting up connection to process: slot=2
09-06 13:52:43.224: I/ActivityManager(526): Start proc com.android.chrome:sandboxed_process2 for service com.android.chrome/org.chromium.content.app.SandboxedProcessService2: pid=27469 uid=99002 gids={}
09-06 13:52:43.244: I/ChildProcessService(27469): Creating new ChildProcessService pid=27469
09-06 13:52:43.254: D/ChildProcessLauncher(5790): on connect callback, pid=27469 context=2105709408
09-06 13:52:43.254: I/LibraryLoader(27469): loading: chromeview
09-06 13:52:43.304: I/LibraryLoader(27469): loaded: chromeview
09-06 13:52:43.304: I/chromium(27469): [INFO:library_loader_hooks.cc(72)] Chromium logging enabled: level = 0, default verbosity = 0
09-06 13:52:43.314: D/TraceEvent(27469): View tag enabled: false
09-06 13:52:43.334: I/chromium(27469): [INFO:child_process_service.cc(132)] ChildProcessService: Exiting child process.
09-06 13:52:43.344: W/ChildProcessConnection(5790): onServiceDisconnected (crash?): pid=27469
09-06 13:52:43.344: D/ChildProcessLauncher(5790): stopping child connection: pid=27469
09-06 13:52:43.344: I/ActivityManager(526): Process com.android.chrome:sandboxed_process2 (pid 27469) has died.
09-06 13:52:43.344: W/ActivityManager(526): Scheduling restart of crashed service com.android.chrome/org.chromium.content.app.SandboxedProcessService2 in 5000ms
4

4 回答 4

1

尝试像这样显示 Toast：

 Toast.makeText(context, context.getString(R.string.error_bluetooth_not_supported),Toast.LENGTH_LONG).show();

这里的上下文是指显示 Toast 的当前 Activity 的上下文。

另请参阅：资源字符串中的 Toast.makeText

Android：Java：在 Toast 中使用字符串资源

于 2013-09-06T13:38:27.347 回答
0

1) 通常，在构建项目后，所有R.string.stuff都不再是错误，因为文件 R.java 是在构建期间生成的。如果您还没有构建项目，它们会显示为错误，这是正常的。顺便说一句，在Eclipse中，你可以手动删除错误消息窗口中的错误消息（可以选择删除一个或多个错误，但不能删除读取“错误（N项）”的根节点）。在“Package Explorer”（左侧）窗格中选择项目时，另一个“神奇”通道是按 F5（“Refresh”）。

2) 确保生成的 R 类与使用它的类属于同一个包。在 Eclipse 中，您必须在“Package Explorer”窗格中看到：YourProject --gen-- your.package --R.java。（如果该文件不存在，文件夹是否读/写？）

3）创建一个空项目并将谷歌资源移动到它可能比尝试从 git 编译项目更容易。至少一些 google 应用程序项目使用的目录结构不同于您通常使用 Eclipse 获得的目录结构（因为它们是使用特殊脚本构建的）。

于 2013-09-06T12:50:32.603 回答
0

通常，当资源文件夹中有任何错误时，R.Java 文件不会正确创建，因此您会收到此类错误。请检查布局文件夹或可绘制文件夹中是否有任何错误。

于 2013-09-06T12:53:22.697 回答
-1

采用：

Toast.makeText(this, getResources().getText(R.string.error_bluetooth_not_supported).toString(), Toast.LENGTH_SHORT).show();

你可以使用：

String str = getResources().getText(R.string.error_bluetooth_not_supported).toString();

于 2013-09-06T12:45:56.007 回答