Android 尝试此代码自动更新.apk文件时，未找到文件异常

我正在使用Commonware示例应用程序自动更新我的应用程序，该应用程序将放置在服务器上。 但它给我带来了ClassNotFound的例外

Logcat

10-29 12:08:45.164: E/CWAC-Update(361): Exception in applying update
10-29 12:08:45.164: E/CWAC-Update(361): java.io.FileNotFoundException: /.CWAC-Update/update.apk (No such file or directory)
10-29 12:08:45.164: E/CWAC-Update(361):     at org.apache.harmony.luni.platform.OSFileSystem.openImpl(Native Method)
10-29 12:08:45.164: E/CWAC-Update(361):     at org.apache.harmony.luni.platform.OSFileSystem.open(OSFileSystem.java:152)
10-29 12:08:45.164: E/CWAC-Update(361):     at java.io.FileOutputStream.<init>(FileOutputStream.java:97)
10-29 12:08:45.164: E/CWAC-Update(361):     at java.io.FileOutputStream.<init>(FileOutputStream.java:69)
10-29 12:08:45.164: E/CWAC-Update(361):     at com.commonsware.cwac.updater.SimpleHttpDownloadStrategy.openDownloadFile(SimpleHttpDownloadStrategy.java:92)
10-29 12:08:45.164: E/CWAC-Update(361):     at com.commonsware.cwac.updater.SimpleHttpDownloadStrategy.downloadAPK(SimpleHttpDownloadStrategy.java:48)
10-29 12:08:45.164: E/CWAC-Update(361):     at com.commonsware.cwac.updater.UpdateService.downloadAndInstall(UpdateService.java:70)
10-29 12:08:45.164: E/CWAC-Update(361):     at com.commonsware.cwac.updater.UpdateService.doWakefulWork(UpdateService.java:36)
10-29 12:08:45.164: E/CWAC-Update(361):     at com.commonsware.cwac.wakeful.WakefulIntentService.onHandleIntent(WakefulIntentService.java:103)
10-29 12:08:45.164: E/CWAC-Update(361):     at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:59)
10-29 12:08:45.164: E/CWAC-Update(361):     at android.os.Handler.dispatchMessage(Handler.java:99)
10-29 12:08:45.164: E/CWAC-Update(361):     at android.os.Looper.loop(Looper.java:123)
10-29 12:08:45.164: E/CWAC-Update(361):     at android.os.HandlerThread.run(HandlerThread.java:60)
10-29 12:17:39.586: E/CWAC-Update(436):     at org.apache.harmony.luni.platform.OSFileSystem.openImpl(Native Method)

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检查您的构建路径。这些库可能不在生成路径中。错误清楚地表明它无法找到类

om.commonsware.cwac.updater.UpdateRequest om.Commonware.cwac.updater.UpdateRequest

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有两种公认的方式可以包含Android的jar库：

将库放在项目根目录下的

libs/

文件夹中

将库包括在生成路径中。如果选择此路径，还需要导出库（在Order下，在Eclipse中导出）

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您是否在MeaniFast中定义了类？然后检查您是否为该类指定了正确的包…在java构建路径中添加该库。确保已选中库。 om.commonsware.cwac.updater.UpdateRequest