1.这里是从log中通过搜索关键字wpa_supplicant: wlan0: State过滤之后的log:

Line 1: 11-25 20:10:14.968120  1104  1104 D wpa_supplicant: wlan0: State: COMPLETED -> ASSOCIATING//从连接状态,配对

Line 2: 11-25 20:10:15.147982  1104  1104 D wpa_supplicant: wlan0: State: ASSOCIATING -> DISCONNECTED//配对失败,断开连接

Line 3: 11-25 20:10:15.149809  1104  1104 D wpa_supplicant: wlan0: State: DISCONNECTED -> DISCONNECTED

Line 4: 11-25 20:10:15.150663  1104  1104 D wpa_supplicant: wlan0: State: DISCONNECTED -> SCANNING//断开连接,扫描网络

Line 5: 11-25 20:10:16.264344  1104  1104 D wpa_supplicant: wlan0: State: SCANNING -> ASSOCIATING//扫描网络,配对

Line 6: 11-25 20:10:16.490507  1104  1104 D wpa_supplicant: wlan0: State: ASSOCIATING -> DISCONNECTED//配对失败,断开连接

Line 7: 11-25 20:10:16.490851  1104  1104 D wpa_supplicant: wlan0: State: DISCONNECTED -> DISCONNECTED//断开连接

Line 8: 11-25 20:10:16.491079  1104  1104 D wpa_supplicant: wlan0: State: DISCONNECTED -> SCANNING//断开连接,重新扫描

Line 9: 11-25 20:10:17.640759  1104  1104 D wpa_supplicant: wlan0: State: SCANNING -> ASSOCIATING//扫描网络,重新配对

Line 10: 11-25 20:10:17.660149  1104  1104 D wpa_supplicant: wlan0: State: ASSOCIATING -> ASSOCIATED//重新配对,配对成功

Line 11: 11-25 20:10:17.661741  1104  1104 D wpa_supplicant: wlan0: State: ASSOCIATED -> 4WAY_HANDSHAKE//四次握手

Line 12: 11-25 20:10:18.660734  1104  1104 D wpa_supplicant: wlan0: State: 4WAY_HANDSHAKE -> 4WAY_HANDSHAKE

Line 13: 11-25 20:10:18.673596  1104  1104 D wpa_supplicant: wlan0: State: 4WAY_HANDSHAKE -> 4WAY_HANDSHAKE

Line 14: 11-25 20:10:18.674133  1104  1104 D wpa_supplicant: wlan0: State: 4WAY_HANDSHAKE -> GROUP_HANDSHAKE

Line 15: 11-25 20:10:18.674501  1104  1104 D wpa_supplicant: wlan0: State: GROUP_HANDSHAKE -> COMPLETED//建立连接

也就是说1~8行我们可以理解为当前状态处于断开状态,第9~15行为从扫描到匹配,再到四次握手,最后连接成功。

2.这里从log中搜索关键字rssi过滤时候的log:

11-26 19:54:08.700871: D/WifiHW(809): leave --> reply=RSSI=-73

11-26 19:54:08.701265: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-73, newLinkSpeed:81, SSID:"11-04-701-2"

11-26 19:54:08.701335: E/WifiManager(809): calculateSignalLevel rssi:-73,numLevels:5,signalLevel:3

11-26 19:54:09.162510: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:09.172199: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:11.718324: D/WifiHW(809): leave --> reply=RSSI=-73

11-26 19:54:11.718702: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-73, newLinkSpeed:81, SSID:"11-04-701-2"

11-26 19:54:11.718773: E/WifiManager(809): calculateSignalLevel rssi:-73,numLevels:5,signalLevel:3

11-26 19:54:12.734200: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:14.722926: D/WifiHW(809): leave --> reply=RSSI=-66

11-26 19:54:14.723305: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-66, newLinkSpeed:135, SSID:"11-04-701-2"

11-26 19:54:14.723381: E/WifiManager(809): calculateSignalLevel rssi:-66,numLevels:5,signalLevel:3

11-26 19:54:14.851915: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:17.748482: D/WifiHW(809): leave --> reply=RSSI=-66

11-26 19:54:17.748870: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-66, newLinkSpeed:135, SSID:"11-04-701-2"

11-26 19:54:17.748962: E/WifiManager(809): calculateSignalLevel rssi:-66,numLevels:5,signalLevel:3

11-26 19:54:20.768479: D/WifiHW(809): leave --> reply=RSSI=-67

11-26 19:54:20.768923: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-67, newLinkSpeed:135, SSID:"11-04-701-2"

11-26 19:54:20.769008: E/WifiManager(809): calculateSignalLevel rssi:-67,numLevels:5,signalLevel:3

11-26 19:54:22.144824: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:23.771013: D/WifiHW(809): leave --> reply=RSSI=-67

11-26 19:54:23.771282: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-67, newLinkSpeed:135, SSID:"11-04-701-2"

11-26 19:54:23.771329: E/WifiManager(809): calculateSignalLevel rssi:-67,numLevels:5,signalLevel:3

11-26 19:54:24.255851: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:25.461048: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.461189: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.502412: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.502584: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.506683: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.507044: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.512010: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.512126: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.689530: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.689664: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.692669: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.692794: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.701451: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.701609: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.705994: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.706128: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.712247: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.712395: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.720826: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.720943: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.723849: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.723980: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:25.731212: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:25.731402: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:26.003017: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:26.003117: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:26.008034: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:26.008168: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:26.016209: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:26.016420: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:26.018635: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:26.018742: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:54:26.772879: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:26.773185: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-81, newLinkSpeed:54, SSID:"11-4-701"

11-26 19:54:26.773256: E/WifiManager(809): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:54:26.774126: E/WifiManager(809): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:54:26.774210: D/WifiWatchdogStateMachine(809): RSSI current: 3 new: -81, 2

11-26 19:54:26.774345: D/StatusBar.NetworkController(919): onReceive, intent action = android.net.wifi.RSSI_CHANGED

11-26 19:54:26.774464: E/WifiManager(919): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:54:26.774506: D/StatusBar.NetworkController(919): updateWifiState: mWifiLevel = 2  mWifiRssi=-81 mWifiConnected is true

11-26 19:54:29.779139: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:29.779601: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-81, newLinkSpeed:54, SSID:"11-4-701"

11-26 19:54:29.779725: E/WifiManager(809): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:54:31.570899: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:32.784597: D/WifiHW(809): leave --> reply=RSSI=-83

11-26 19:54:32.784891: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-83, newLinkSpeed:27, SSID:"11-4-701"

11-26 19:54:32.784959: E/WifiManager(809): calculateSignalLevel rssi:-83,numLevels:5,signalLevel:1

11-26 19:54:32.785818: E/WifiManager(809): calculateSignalLevel rssi:-83,numLevels:5,signalLevel:1

11-26 19:54:32.785893: D/WifiWatchdogStateMachine(809): RSSI current: 2 new: -83, 1

11-26 19:54:32.786174: D/StatusBar.NetworkController(919): onReceive, intent action = android.net.wifi.RSSI_CHANGED

11-26 19:54:32.786257: E/WifiManager(919): calculateSignalLevel rssi:-83,numLevels:5,signalLevel:1

11-26 19:54:32.786296: D/StatusBar.NetworkController(919): updateWifiState: mWifiLevel = 1  mWifiRssi=-83 mWifiConnected is true

11-26 19:54:35.787114: D/WifiHW(809): leave --> reply=RSSI=-83

11-26 19:54:35.787387: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-83, newLinkSpeed:27, SSID:"11-4-701"

11-26 19:54:35.787479: E/WifiManager(809): calculateSignalLevel rssi:-83,numLevels:5,signalLevel:1

11-26 19:54:38.789561: D/WifiHW(809): leave --> reply=RSSI=-83

11-26 19:54:38.789843: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-83, newLinkSpeed:13, SSID:"11-4-701"

11-26 19:54:38.789912: E/WifiManager(809): calculateSignalLevel rssi:-83,numLevels:5,signalLevel:1

11-26 19:54:40.979140: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:41.807662: D/WifiHW(809): leave --> reply=RSSI=-83

11-26 19:54:41.807996: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-83, newLinkSpeed:13, SSID:"11-4-701"

11-26 19:54:41.808087: E/WifiManager(809): calculateSignalLevel rssi:-83,numLevels:5,signalLevel:1

11-26 19:54:43.085509: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:44.831510: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:44.831993: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-84, newLinkSpeed:13, SSID:"11-4-701"

11-26 19:54:44.832119: E/WifiManager(809): calculateSignalLevel rssi:-84,numLevels:5,signalLevel:1

11-26 19:54:46.428142: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:46.428356: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:47.848676: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:47.848951: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-84, newLinkSpeed:13, SSID:"11-4-701"

11-26 19:54:47.849047: E/WifiManager(809): calculateSignalLevel rssi:-84,numLevels:5,signalLevel:1

11-26 19:54:50.395173: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:54:50.868477: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:50.868742: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-84, newLinkSpeed:13, SSID:"11-4-701"

11-26 19:54:50.868785: E/WifiManager(809): calculateSignalLevel rssi:-84,numLevels:5,signalLevel:1

11-26 19:54:51.048190: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.048412: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.056166: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.056304: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.063571: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.063718: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.088187: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.088329: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.092893: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.093022: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.568120: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.568268: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.573064: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.573182: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.582558: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.582692: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:51.584831: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:51.584952: I/WifiStateMachine(809): fetchRssiNative, newRssi:-84

11-26 19:54:53.888146: D/WifiHW(809): leave --> reply=RSSI=-84

11-26 19:54:53.888545: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-84, newLinkSpeed:13, SSID:"11-4-701"

11-26 19:54:53.888626: E/WifiManager(809): calculateSignalLevel rssi:-84,numLevels:5,signalLevel:1

11-26 19:54:56.822526: D/StatusBar.NetworkController(919): updateWifiState: mWifiLevel = 1  mWifiRssi=-83 mWifiConnected is false

11-26 19:54:56.828461: D/StatusBar.NetworkController(919): updateWifiState: mWifiLevel = 1  mWifiRssi=-83 mWifiConnected is false

11-26 19:54:58.116329: D/StatusBar.NetworkController(919): updateWifiState: mWifiLevel = 1  mWifiRssi=-83 mWifiConnected is false

11-26 19:54:58.124940: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:58.125241: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-81, newLinkSpeed:54, SSID:"11-4-701"

11-26 19:54:58.125327: E/WifiManager(809): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:54:58.126499: E/WifiManager(809): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:54:58.126684: D/WifiWatchdogStateMachine(809): RSSI current: 1 new: -81, 2

11-26 19:54:58.143947: D/StatusBar.NetworkController(919): onReceive, intent action = android.net.wifi.RSSI_CHANGED

11-26 19:54:58.144257: E/WifiManager(919): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:54:58.144295: D/StatusBar.NetworkController(919): updateWifiState: mWifiLevel = 2  mWifiRssi=-81 mWifiConnected is false

11-26 19:54:58.146592: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:54:58.146733: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:55:00.004198: D/StatusBar.NetworkController(919): path = /data/data/com.android.systemui/rssi_report.txt

11-26 19:55:01.128538: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:55:01.128946: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-81, newLinkSpeed:54, SSID:"11-4-701"

11-26 19:55:01.129044: E/WifiManager(809): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:55:04.134671: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:55:04.135048: I/WifiStateMachine(809): fetchRssiAndLinkSpeedNative, newRssi:-81, newLinkSpeed:54, SSID:"11-4-701"

11-26 19:55:04.135970: E/WifiManager(809): calculateSignalLevel rssi:-81,numLevels:5,signalLevel:2

11-26 19:55:04.211568: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC;otherSsid = CMCC-AUTO

11-26 19:55:04.211790: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC-AUTO;otherSsid = CMCC

11-26 19:55:04.218408: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC;otherSsid = CMCC-AUTO

11-26 19:55:04.314868: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC;otherSsid = CMCC-AUTO

11-26 19:55:04.460730: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:55:04.460863: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:55:04.463681: D/WifiHW(809): leave --> reply=RSSI=-81

11-26 19:55:04.463811: I/WifiStateMachine(809): fetchRssiNative, newRssi:-81

11-26 19:55:04.466031: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC-AUTO;otherSsid = CMCC-AUTO

11-26 19:55:04.466127: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC;otherSsid = CMCC

11-26 19:55:04.470775: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC;otherSsid = CMCC-AUTO

11-26 19:55:04.470988: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC-AUTO;otherSsid = CMCC

11-26 19:55:04.475982: D/WifiExt(20299): WifiExt getaporder() currentSsid = CMCC;otherSsid = CMCC-AUTO

从上面的log中我们可以看到如:

11-26 19:54:53.888626: E/WifiManager(809): calculateSignalLevel rssi:-84,numLevels:5,signalLevel:1

singalLevel为当前的信号强度为1格(信号强度共为5格),而且rssi值为-84(RSSI为Received Signal Strength Indication接收的信号强度指示)。表示当前wifi信号非常微弱。

从log中分析Android wif连接状态的方法的更多相关文章

  1. MyEclipse 10 中安装Android ADT 22插件的方法

    MyEclipse 10 中安装Android ADT 22插件的方法 下载ADT包:http://dl.google.com/android/ADT-22.0.0.zip 将ADT-22.0.0.z ...

  2. 怎样检查Android网络连接状态

    在发送任何HTTP请求前最好检查下网络连接状态,这样可以避免异常.这个教程将会介绍怎样在你的应用中检测网络连接状态. 创建新的项目 1.在Eclipse IDE中创建一个新的项目并把填入必须的信息.  ...

  3. Android 网络连接状态的监控

    有些应用需要连接网络,例如更新后台服务,刷新数据等,最通常的做法是定期联网,直接使用网上资源.缓存数据或执行一个下载任务来更新数据. 但是如果终端设备没有连接网络,或者网速较慢,就没必要执行这些任务. ...

  4. linux中telnet后退出连接窗口的方法?

    linux中telnet后退出连接窗口 [root@a cron]# telnet www.baidu.com 80Trying 115.239.211.112...Connected to www. ...

  5. PyQt(Python+Qt)学习随笔:QTreeWidgetItem项中列的复选状态访问方法

    老猿Python博文目录 专栏:使用PyQt开发图形界面Python应用 老猿Python博客地址 树型部件QTreeWidget中的QTreeWidgetItem项,项中每列数据都可以单独设置复选状 ...

  6. SQLite3中dos命令下退出"...>"状态的方法

    今天在看Android中SQLite,跟着书上一步一步走,在dos中敲命令时候不小心敲错了,命令行就会突然变成”…>”这样的,本来是”sqlite>”的,然后接下来后面的就没办法在继续操作 ...

  7. 在AndroidManifest.xml文件中设置Android程序的启动界面方法

    从网上搜集了一堆的Android代码,比如Android的Login程序和Android的Helloworld程序,但是却总不能正确运行一个正确的程序,郁闷了很久,终于在一次一次的测试后成功的在And ...

  8. android 网络连接 HttpGet HttpPost方法

    1.本文主要介绍利用HttpGet和HtppPost方法来获取网络json数据. 代码如下: public HttpData(String Url,HttpGetDataListener listen ...

  9. 在App_Data中创建数据库获取连接串简便方法!

    原文发布时间为:2008-07-25 -- 来源于本人的百度文章 [由搬家工具导入] 1、在App_Data右击添加一个SQL数据库2、双击该数据库,在左边添加表,并显示表数据进行添加数据3、把刚刚创 ...

随机推荐

  1. 关于Js OOP编程 创建对象的一些理解。

    面向对象是一种对现实世界理解和抽象的方法,是计算机编程技术发展到一定阶段后的产物. 对象的含义          对象可以是汽车,人,动物,文字,表单或者任何存在的事物等等. 对象有: 属性----- ...

  2. Migrating an ASP.NET MVC application to ADFS authentication

    I recently built an ASP.NET application at work to help track internal use of our products. It's bee ...

  3. [IOS 开发] 懒加载 (延迟加载) 的基本方式,好处,代码示例

    懒加载的好处: 1> 不必将创建对象的代码全部写在viewDidLoad方法中,代码的可读性更强 2> 每个属性的getter方法中分别负责各自的实例化处理,代码彼此之间的独立性强,松耦合 ...

  4. <c:forEach>循环list,一个表格两列数据

    参考: http://zhidao.baidu.com/link?url=apG5dUmW7RjB5eOYKSWOWdKd7nxFpkDO4n3i8R6MWYKl7E2JC1OCtPILF4G4EUO ...

  5. jquery中select的应用

    //得到select项的个数 jQuery.fn.size = function(){ return jQuery(this).get(0).options.length; } //获得选中项的索引 ...

  6. TFS Workspace 更改电脑名称

    不小心改了计算机名称 导致VS在保存项目的时候,包如下错误: 解决方法: 第一步: 第二步:输入如下片段 tf workspaces /updateComputerName:旧计算机名称  /coll ...

  7. sfliter__except_handler4

    sfliter源码在vs08中编译 出现 错误error LNK2019: unresolved external symbol __except_handler4 referenced in fun ...

  8. 对于Python中self的看法

    首先看一段Java代码 public class Test { public String name; public int age; public String gender; public Str ...

  9. 读取微博feed伪代码

    // 读取我的好友fids $db = new DB(); $mc = new Memcached(); $_uid = 1; // my uid $sql = "select * from ...

  10. jQuery动画连续触发、滞后反复执行解决办法

    jQuery中slideUp .slideDown.animate等动画运用时,如果目标元素是被外部事件驱动, 当鼠标快速地连续触发外部元素事件, 动画会滞后的反复执行,其表现不雅. 则解决办法: 1 ...