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當(dāng)wifi功能被關(guān)閉時,在Log中看到以下和wifi狀態(tài)改變有關(guān)的日志:
11-04 11:09:34.559: E/WifiService(185): Handle MESSAGE_DISABLE_WIFI. 11-04 11:09:34.569: D/DATA(287): [DCT(0) ] intent received :android.net.wifi.WIFI_STATE_CHANGED 11-04 11:09:34.569: D/StatusBarPolicy(254): updateWifi: android.net.wifi.WIFI_STATE_CHANGED : wifi state: 0 supplicant connected: false 11-04 11:09:34.579: I/wpa_supplicant(8310): CTRL-EVENT-TERMINATING - signal 15 received 11-04 11:09:34.579: V/WifiMonitor(185): Event [CTRL-EVENT-TERMINATING - signal 15 received] 11-04 11:09:34.579: V/WifiStateTracker(185): handleMessage(): msg.what= 2
在當(dāng)前程序中沒有對wifi斷開進(jìn)行處理,所以出現(xiàn)以下異常:
11-04 11:09:35.889: E/DownThread(7389): Connection timed out 11-04 11:09:35.889: E/DownThread(7389): java.net.SocketException: Connection timed out 11-04 11:09:35.889: E/DownThread(7389): at org.apache.harmony.luni.platform.OSNetworkSystem.read(Native Method) 11-04 11:09:35.889: E/DownThread(7389): at dalvik.system.BlockGuard$WrappedNetworkSystem.read(BlockGuard.java:273) 11-04 11:09:35.889: E/DownThread(7389): at org.apache.harmony.luni.net.PlainSocketImpl.read(PlainSocketImpl.java:458) 11-04 11:09:35.889: E/DownThread(7389): at org.apache.harmony.luni.net.SocketInputStream.read(SocketInputStream.java:85) 11-04 11:09:35.889: E/DownThread(7389): at java.io.BufferedInputStream.read(BufferedInputStream.java:319) 11-04 11:09:35.889: E/DownThread(7389): at org.apache.harmony.luni.internal.net.www.protocol.http.FixedLengthInputStream.read(FixedLengthInputStream.java:44) 11-04 11:09:35.889: E/DownThread(7389): at java.io.BufferedInputStream.read(BufferedInputStream.java:319) 11-04 11:09:35.889: E/DownThread(7389): at java.io.FilterInputStream.read(FilterInputStream.java:133) 11-04 11:09:35.889: E/DownThread(7389): at com.tvie.ivideo.download.logic.DownThread.run(DownThread.java:65)
出現(xiàn)異常的代碼是InputStream的read方法。
while ((len = is.read(buffer)) != -1 && running) {
read方法的聲明表現(xiàn)會拋出IOException。
int java.io.InputStream.read(byte[] buffer) throws IOException
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