Android wifi主要广播详解

Android wifi相关主要广播总结

文章目录

  • Android wifi相关主要广播总结
    • 一、前言
    • 二、wifi主要广播分析介绍
      • 1、简单的广播监听
      • 2、wifi 广播对应的 action 字符串:
      • 3、广播和接收的相关数据
    • 三、广播相关日志:
      • 1、wifi扫描广播的日志
      • 2、wifi连接、断开的日志
        • (1)第一次连接的日志
          • ①密码正确情况的日志
          • ②密码错误情况的日志
          • ③ 无密码情况的连接
        • (2)保存状态连接的日志
        • (3)断开连接的wifi 的日志
        • (4)忘记连接的wifi的日志
        • (5)已连接一个wifi的情况连接另外一个wifi的日志
      • 3、wifi打开、关闭的日志
        • (1)wifi打开但是未连接wifi的日志:
        • (2)wifi打开后自动连接上wifi的日志:
        • (3)wifi未连接情况下关闭日志:
        • (4)wifi已连接情况下关闭wifi 的日志:
    • 四、其他
      • 1、wifi常用广播小结
      • 2、wifi密码错误最正确的判断
      • 3、如果查看wifi相关广播的Extra数据?
        • wifi连接变化广播 WifiManager.NETWORK_STATE_CHANGED_ACTION :
        • 再看一个其他类和其他类型的广播数据,ip变化广播:
        • 是否可以在一个广播里面判断其他Extra 数据?
      • 4、wifi其他相关广播
      • 5、本文用到的获取ip代码
      • 5、Android 蓝牙相关广播介绍

一、前言

wifi应用开发肯定会用到wifi开关和wifi连接状态监听的广播,有些广播比较容易混淆,本文进行详细总结。

比如wifi网络变化广播:CONNECTIVITY_ACTION、WIFI_STATE_CHANGED_ACTION、NETWORK_STATE_CHANGED_ACTION 这三个比较容易搞混。

SUPPLICANT_STATE_CHANGED_ACTION 和 SUPPLICANT_CONNECTION_CHANGE_ACTION 比较容易搞混。

很多wifi相关开发的人,搞了多年还是没有对wifi主要广播进行过梳理总结。

本文对各个广播使用情况进行详细介绍,有需要的可以看看。

本文不仅仅对wifi相关广播做了介绍,还展示了具体情况下的打印日志,
后续还对广播携带数据的查找方式进行了介绍,有一定的研究学习价值,可以收藏学习。

二、wifi主要广播分析介绍

1、简单的广播监听

//注册
IntentFilter mFilter = new IntentFilter();
mFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); //网络变化广播,一般是ip地址变化
mFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); //wifi开关变化广播
mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); //wifi连接变化广播
mFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);//wifi信息验证变化广播
mFilter.addAction(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION);//wifi开关变化
mFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);//扫描到wifi广播
registerReceiver(mReceiver, mFilter, Context.RECEIVER_EXPORTED); //Android14 普通应用要多加一个参数,否则报异常。

//监听
    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            LogUtil.debug("action = " + action);

        }
    };
//反注册
unregisterReceiver(mReceiver1);

上面的代码只是简单监听action日志,未获取action相关的具体信息。
上面是Wifi相关的常用广播广播,还有些不常用的广播。最后介绍一下。

2、wifi 广播对应的 action 字符串:

//网络变化广播
ConnectivityManager.CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE";

WifiManager.java:
//wifi 开关状态变化广播
String WIFI_STATE_CHANGED_ACTION ="android.net.wifi.WIFI_STATE_CHANGED";
//wifi 连接状态变化广播
String NETWORK_STATE_CHANGED_ACTION = "android.net.wifi.STATE_CHANGE";
//wifi 连接验证状态变化广播 2
String SUPPLICANT_STATE_CHANGED_ACTION ="android.net.wifi.supplicant.STATE_CHANGE";
//wifi 开关状态变化广播2
String SUPPLICANT_CONNECTION_CHANGE_ACTION="android.net.wifi.supplicant.CONNECTION_CHANGE";
//扫描到wifi广播
String SCAN_RESULTS_AVAILABLE_ACTION = "android.net.wifi.SCAN_RESULTS";

可以看到action中 WIFI_STATE_CHANGED 是Wifi开关广播,STATE_CHANGE是Wifi网络变化广播;
可以看到supplicant相关的action中 WIFI_STATE_CHANGE 是Wifi状态改变广播,CONNECTION_CHANGE是Wifi开关状态变化广播;

supplicant 的理解,有些人说是硬件/底层相关的广播,其实不是的。这个只是Wifi不同状态的广播。
supplicant 翻译过来 表示: 请求者。其实就是网络校验相关的广播。开关也有相关校验吧。

所以wifi开关和wifi断开连接都有supplicant相关日志。
但是很多情况其实是不需要 supplicant 广播监听的,但是有些情况可以使用这个广播,
往下看看具体日志,就知道这个 supplicant 的用途了。

3、广播和接收的相关数据

    //监听
    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            LogUtil.inform("action = " + action);
            switch (action) {
                case ConnectivityManager.CONNECTIVITY_ACTION: //网络变化广播,一般是ip地址变化
                    String wifiIp = FunctionUtil.getNetIpAddress("wlan0");
                    LogUtil.inform("wifiIp = " + wifiIp);
                    break;
                case WifiManager.WIFI_STATE_CHANGED_ACTION: //wifi开关变化广播
                    int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_UNKNOWN);
                    LogUtil.inform("wifiState = " + wifiState + " (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)");
                    break;
                case WifiManager.NETWORK_STATE_CHANGED_ACTION: //wifi连接变化广播,断开或者断开某个wifi
                    NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
                    LogUtil.inform("info = " + info);
                    break;
                case WifiManager.SUPPLICANT_STATE_CHANGED_ACTION: //wifi信息验证变化广播
                    NetworkInfo.DetailedState detailedState = WifiInfo.getDetailedStateOf((SupplicantState) intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE));
                    LogUtil.inform("detailedState = " + detailedState);
                    int error = intent.getIntExtra(WifiManager.EXTRA_SUPPLICANT_ERROR, -1);
                    LogUtil.inform("error = " + error);
                    if (error == WifiManager.ERROR_AUTHENTICATING) { // 1 密码错误
                    }
                    break;
                case WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION: //wifi开关变化,已经废弃
                    boolean isWifiOn = intent.getBooleanExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, false);
                    LogUtil.inform("isWifiOn = " + isWifiOn);
                    break;
                case WifiManager.SCAN_RESULTS_AVAILABLE_ACTION: //扫描到wifi广播
                    //是否扫描成功
                   boolean lastScanSucceeded = intent.getBooleanExtra(WifiManager.EXTRA_RESULTS_UPDATED, true);
                   LogUtil.inform("lastScanSucceeded = " + lastScanSucceeded); //基本都返回true
                    List scanResults = mWifiManager.getScanResults(); //需要动态权限:ACCESS_FINE_LOCATION
                    LogUtil.inform("scanResults size = " + scanResults.size());

                    break;
            }

        }
    };

上面是wifi常用广播添加接收 额外数据Extra的代码。
关于这些Action 有什么 Extra数据,后面有介绍。
具体日志打印情况,可以继续往下看。

三、广播相关日志:

下面是上面广播接收后具体的日志打印,有兴趣的可以细细看一下,肯定是会有收获的。

1、wifi扫描广播的日志

只要界面注册监听了这个wifi扫描广播,就会收到这个广播消息。

MainActivity.java(45)::onReceive - action = android.net.wifi.SCAN_RESULTS
MainActivity.java(74)::onReceive - lastScanSucceeded = true
MainActivity.java(76)::onReceive - scanResults size = 52

MainActivity.java(45)::onReceive - action = android.net.wifi.SCAN_RESULTS
2MainActivity.java(74)::onReceive - lastScanSucceeded = true
MainActivity.java(76)::onReceive - scanResults size = 53

MainActivity.java(45)::onReceive - action = android.net.wifi.SCAN_RESULTS
MainActivity.java(74)::onReceive - lastScanSucceeded = true
MainActivity.java(76)::onReceive - scanResults size = 57

wifi扫描的广播是每十秒一次扫描触发。

如果要获取到扫描的wifi列表,需要应用获取到动态权限:ACCESS_FINE_LOCATION


可以在代码中动态申请,也可以在原生设置应用中打开这个应用的信息手动允许这个权限。

下面的日志是保留了时间戳的日志。

后面日志比较多,详细看一两个就行,其他的都是类似的。

2、wifi连接、断开的日志

(1)第一次连接的日志
①密码正确情况的日志
1、wifi连接变化广播,CONNECTING状态,连接中
08-28 02:49:25.033  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 02:49:25.035  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

2、wifi连接变化广播 supplicant,CONNECTING状态,多次
08-28 02:49:25.039  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 02:49:25.040  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 02:49:25.041  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
...

3、wifi连接变化广播,CONNECTING/AUTHENTICATING状态,连接中+验证中
08-28 02:49:25.416  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 02:49:25.417  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/AUTHENTICATING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

4、wifi连接变化广播 supplicant,AUTHENTICATING 状态,验证中
08-28 02:49:25.419  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 02:49:25.419  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 02:49:25.420  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

5、wifi连接变化广播 supplicant,CONNECTING状态
08-28 02:49:25.445  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 02:49:25.446  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

6、wifi连接变化广播,CONNECTING/OBTAINING_IPADDR 状态,请求分配ip
08-28 02:49:25.454  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 02:49:25.455  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

7、wifi连接变化广播,CONNECTING/OBTAINING_IPADDR 状态,请求分配ip
08-28 02:49:25.475  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 02:49:25.476  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = OBTAINING_IPADDR
08-28 02:49:25.476  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

8、wifi连接变化广播,CONNECTING/OBTAINING_IPADDR 状态,请求分配ip,估计是ip分配完成
08-28 02:49:26.095  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 02:49:26.096  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

9、wifi连接变化广播,CONNECTED 状态,已连接状态
08-28 02:49:26.135  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 02:49:26.138  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

10、网络变化广播,ip变化
08-28 02:49:26.312  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 02:49:26.323  8820  8820 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = 192.5.1.8

从上面日志可以看到比较详细的wifi连接完成过程:

wifi连接过程的广播:连接中-->校验密码-->分配ip-->连接完成 --> ip 变化

密码正确的wifi连接过程中,在 wifi.STATE_CHANGE 广播已经包含了 supplicant广播内容。
并且 supplicant广播内容没有包含wifi连接完成的广播,只是一些校验过程的广播;
总的来说,wifi.STATE_CHANGE 广播 包含的状态比较全面,从开始到完成的。

最后的网络变化广播,不是没啥action,是调用系统api获取了wifi的ip地址。

②密码错误情况的日志
1、wifi连接变化广播,DISCONNECTED/SCANNING 状态,断开
08-28 03:26:37.559  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:26:37.561  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: DISCONNECTED/SCANNING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

2、wifi连接变化广播 supplicant,SCANNING 状态
08-28 03:26:37.563  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:26:37.564  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = SCANNING
08-28 03:26:37.565  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = 1 //返回密码错误的情况

3、wifi连接变化广播,CONNECTING状态,连接中不验证
08-28 03:26:40.297  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:26:40.300  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

4、wifi连接变化广播 supplicant,CONNECTING 状态,多次
08-28 03:26:40.300  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:26:40.301  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 03:26:40.301  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

08-28 03:26:40.505  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:26:40.506  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 03:26:40.506  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

08-28 03:26:40.532  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:26:40.534  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 03:26:40.535  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

5、wifi连接变化广播,CONNECTING/AUTHENTICATING 状态,连接中+验证中
08-28 03:26:40.563  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:26:40.564  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/AUTHENTICATING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

6、wifi连接变化广播 supplicant,AUTHENTICATING 状态,验证中
08-28 03:26:40.573  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:26:40.573  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 03:26:40.574  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

7、wifi连接变化广播,DISCONNECTED 状态,断开
08-28 03:26:44.758  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:26:44.759  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: DISCONNECTED/DISCONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

8、wifi连接变化广播 supplicant,DISCONNECTED 状态,断开
08-28 03:26:44.770  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:26:44.771  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = DISCONNECTED
08-28 03:26:44.771  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = 1  //返回密码错误的情况


08-28 03:26:47.604  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.SCAN_RESULTS

从上面日志可以看到比较详细的wifi密码错误连接完成过程:

wifi密码错误连接过程的广播:断开连接+扫描,密码错误-->连接中-->校验密码-->断开连接,密码错误

密码错误的wifi连接过程中,supplicant 广播内容可以判断出wifi 密码错误的情况;
之前我发现这个wifi连接状态的 supplicant 广播,怎么有两次密码错误的,
所以一直没有这个广播判断密码错误的情况,使用的是原生系统Setings的不断判断连接状态的方法。

现在看来是可以用这个wifi连接状态的 supplicant 广播,判断密码错误的,加上 detailedState 的判断就可以了;
最好是判断 detailedState = DISCONNECTED 的情况,因为这个时候已经是完成了整个校验过程。

所以说查看详细日志还是有作用的。

③ 无密码情况的连接
1、wifi连接变化广播,CONNECTING状态,连接中
08-28 06:16:33.045  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:16:33.047  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

2、wifi连接变化广播 supplicant,CONNECTING状态,多次(3次)
08-28 06:16:33.055  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:16:33.057  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:16:33.057  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 06:16:33.584  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:16:33.585  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:16:33.585  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 06:16:33.626  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:16:33.627  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:16:33.627  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

3、wifi连接变化广播,CONNECTING/OBTAINING_IPADDR 状态,连接中+请求ip分配
08-28 06:16:33.640  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:16:33.642  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

4、wifi连接变化广播 supplicant,OBTAINING_IPADDR 状态,请求ip分配
08-28 06:16:33.668  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:16:33.669  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = OBTAINING_IPADDR
08-28 06:16:33.669  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

5、wifi连接变化广播,CONNECTING/OBTAINING_IPADDR 状态,连接中+请求ip分配,应该是ip分配完成
08-28 06:16:33.790  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:16:33.791  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

6、wifi连接变化广播,CONNECTED 状态,已连接状态
08-28 06:16:33.828  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:16:33.833  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

7、网络变化广播,ip变化
08-28 06:16:34.032  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 06:16:34.054  3984  3984 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = 192.168.31.47

可以看到,和有密码的wifi连接的广播是差不多的,但是没有验证过程的广播 CONNECTING/AUTHENTICATING;
估计是不用验证密码所以跳过了 AUTHENTICATING 的过程。
过程:

wifi无密码连接过程的广播:连接中-->分配ip-->连接完成 --> ip 变化
(2)保存状态连接的日志
1、wifi连接变化广播,CONNECTING状态,连接中
08-28 03:40:55.506  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:40:55.507  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

2、wifi连接变化广播 supplicant,CONNECTING状态,多次(3次)
08-28 03:40:55.510  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:40:55.511  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 03:40:55.512  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 03:40:55.570  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:40:55.571  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 03:40:55.571  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 03:40:55.645  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:40:55.646  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 03:40:55.646  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

3、wifi连接变化广播,CONNECTING/AUTHENTICATING状态,连接中+验证中
08-28 03:40:55.745  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:40:55.746  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/AUTHENTICATING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

4、wifi连接变化广播 supplicant,AUTHENTICATING 状态,多次
08-28 03:40:55.747  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:40:55.748  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 03:40:55.748  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 03:40:55.769  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:40:55.770  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 03:40:55.770  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

5、wifi连接变化广播 ,CONNECTING 状态,
08-28 03:40:55.776  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:40:55.777  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

6、wifi连接变化广播 ,CONNECTING/OBTAINING_IPADDR 状态,请求分配ip
08-28 03:40:55.783  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:40:55.783  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

7、wifi连接变化广播 supplicant,OBTAINING_IPADDR 状态,请求分配ip
08-28 03:40:55.792  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:40:55.793  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = OBTAINING_IPADDR
08-28 03:40:55.793  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

8、wifi连接变化广播 ,CONNECTING/OBTAINING_IPADDR 状态,请求分配ip完成
08-28 03:40:55.875  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:40:55.876  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

9、wifi连接变化广播 ,CONNECTED 状态,完成连接
08-28 03:40:55.907  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:40:55.913  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

10、网络变化广播,ip变化
08-28 03:40:56.055  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 03:40:56.059  8820  8820 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = 192.168.31.79

可以看到连接已保存的wifi和第一次连接wifi过程基本是一样的。

过程:

连接保存的wifi过程的广播:连接中-->校验密码-->分配ip-->连接完成 --> ip 变化

后续有测试保存的wifi,修改密码后,再选择连接,这种情况和连接错误密码的wifi情况是差不多的,也是有wifi密码错误广播的。

(3)断开连接的wifi 的日志
1、wifi连接变化广播,DISCONNECTED 状态,断开
08-28 06:48:29.778  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:48:29.780  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: DISCONNECTED/DISCONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

2、wifi连接变化广播 supplicant,DISCONNECTED 状态,断开
08-28 06:48:29.785  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:48:29.786  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = DISCONNECTED
08-28 06:48:29.786  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

3、网络变化广播,ip变化
08-28 06:48:29.787  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 06:48:29.790  3984  3984 I WifiReceiverDemo: FunctionUtil.java(128)::getNetIpAddress - hardWareAddress = null
08-28 06:48:29.790  3984  3984 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = null

可以看到wifi断开的过程比较简单,断开后是没有wifi ip的。

过程:

断开wifi过程的广播:断开wifi--> ip 变化

并且可以看到断开wifi不会像连接wifi那样磨磨唧唧,没有断开中的状态,直接就是断开。
只有打开、关闭、连接wifi 有进行中的状态,断开wifi是没有进行中状态的。

(4)忘记连接的wifi的日志
1、wifi连接变化广播,DISCONNECTED 状态,断开
08-28 03:42:25.246  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 03:42:25.247  8820  8820 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: DISCONNECTED/DISCONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

2、wifi连接变化广播 supplicant,DISCONNECTED 状态,断开
08-28 03:42:25.259  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 03:42:25.260  8820  8820 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = DISCONNECTED
08-28 03:42:25.260  8820  8820 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

3、网络变化广播,ip变化
08-28 03:42:25.382  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 03:42:25.385  8820  8820 I WifiReceiverDemo: FunctionUtil.java(128)::getNetIpAddress - hardWareAddress = null
08-28 03:42:25.385  8820  8820 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = null

可以看到忘记wifi的关闭和断开wifi的广播情况是一样的。

过程:

忘记wifi过程的广播:断开wifi--> ip 变化
(5)已连接一个wifi的情况连接另外一个wifi的日志
1、wifi连接变化广播,DISCONNECTED 状态,断开
08-28 06:29:15.242  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:29:15.244  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: DISCONNECTED/DISCONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

2、wifi连接变化广播 supplicant,DISCONNECTED 状态,断开
08-28 06:29:15.264  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:29:15.265  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = DISCONNECTED
08-28 06:29:15.265  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

3、wifi连接变化广播,CONNECTING 状态,连接中
08-28 06:29:15.268  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:29:15.269  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

4、wifi连接变化广播 supplicant,CONNECTING 状态,连接中,多次(三次)
08-28 06:29:15.269  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:29:15.270  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:29:15.271  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

5、网络变化广播,ip变化
08-28 06:29:15.340  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 06:29:15.344  3984  3984 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = null

wifi连接变化广播 supplicant,CONNECTING 状态
08-28 06:29:15.371  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:29:15.372  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:29:15.373  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 06:29:15.420  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:29:15.421  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:29:15.422  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

6、wifi连接变化广播,CONNECTING/AUTHENTICATING 状态,验证中
08-28 06:29:15.433  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:29:15.434  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/AUTHENTICATING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

6、wifi连接变化广播 supplicant,AUTHENTICATING 状态,验证中,多次
08-28 06:29:15.440  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:29:15.441  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 06:29:15.441  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

08-28 06:29:15.451  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:29:15.452  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 06:29:15.452  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

7、wifi连接变化广播,CONNECTING 状态,连接中
08-28 06:29:15.506  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:29:15.507  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

8、wifi连接变化广播,CONNECTING/OBTAINING_IPADDR 状态,连接中+请求ip分配
08-28 06:29:15.513  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:29:15.514  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

9、wifi连接变化广播 supplicant,OBTAINING_IPADDR 状态,请求ip分配
08-28 06:29:15.523  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:29:15.524  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = OBTAINING_IPADDR
08-28 06:29:15.524  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

10、wifi连接变化广播,CONNECTING/OBTAINING_IPADDR 状态,ip分配完成
08-28 06:29:16.212  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:29:16.213  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

11、wifi连接变化广播,CONNECTED 状态,连接完成
08-28 06:29:16.233  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:29:16.234  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

12、网络变化广播,ip变化
08-28 06:29:16.401  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 06:29:16.404  3984  3984 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = 192.168.1.39

从上面广播可以看出,已连接wifi的情况连接另外一个wifi的过程,比普通连接的wifi:

(1)多了断开wifi的;
(2)过程中间也会收到 ip变化的广播。

过程:

连接第二个wifi过程的广播:断开wifi--> ip 变化 --> 连接中 --> 校验密码-->分配ip-->连接完成 --> ip 变化

3、wifi打开、关闭的日志

(1)wifi打开但是未连接wifi的日志:

​ 这个情况是打开wifi之前没有保存的wifi情况。

1、wifi开关变化广播,ENABLING 状态,正在打开
08-28 06:35:44.779  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 06:35:44.780  3984  3984 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 2 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

2、wifi开关变化广播,ENABLED 状态,已经打开
08-28 06:35:44.918  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 06:35:44.920  3984  3984 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 3 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

3、wifi开关变化广播 supplicant,ENABLED 状态,已经打开
08-28 06:35:44.932  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.CONNECTION_CHANGE
08-28 06:35:44.932  3984  3984 I WifiReceiverDemo: MainActivity.java(69)::onReceive - isWifiOn = true

上面的广播可以看出,wifi打开的日志中 wifi.WIFI_STATE_CHANGED 和 supplicant.CONNECTION_CHANGE 效果是一样的。
wifi.WIFI_STATE_CHANGED 的过程相对来说详细一点。

(2)wifi打开后自动连接上wifi的日志:

​ 这个情况是打开wifi前有已保存的wifi情况。

1、wifi开关变化广播,ENABLING 状态,正在打开
08-28 06:34:10.886  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 06:34:10.887  3984  3984 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 2 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

2、wifi开关变化广播,ENABLED 状态,已经打开
08-28 06:34:11.037  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 06:34:11.038  3984  3984 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 3 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

3、wifi网络变化广播 supplicant,ENABLED 状态,已经打开
08-28 06:34:11.047  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.CONNECTION_CHANGE
08-28 06:34:11.048  3984  3984 I WifiReceiverDemo: MainActivity.java(69)::onReceive - isWifiOn = true

//上面三个广播信息和上面打开wifi后未自动连接wifi是一样的。
08-28 06:34:13.673  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.SCAN_RESULTS

4、wifi连接变化广播 ,CONNECTING 状态,正在连接
08-28 06:34:13.723  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:34:13.724  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

5、wifi连接变化广播 supplicant,CONNECTING 状态,正在连接,多次
08-28 06:34:13.727  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:34:13.727  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:34:13.728  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 06:34:13.745  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:34:13.746  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:34:13.747  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 06:34:13.766  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:34:13.767  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = CONNECTING
08-28 06:34:13.767  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

6、wifi连接变化广播 ,CONNECTING/AUTHENTICATING 状态,验证密码
08-28 06:34:13.771  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:34:13.779  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/AUTHENTICATING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

7、wifi连接变化广播 supplicant,AUTHENTICATING 状态,验证密码
08-28 06:34:13.780  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:34:13.781  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 06:34:13.783  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1
08-28 06:34:13.783  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:34:13.784  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = AUTHENTICATING
08-28 06:34:13.784  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

8、wifi连接变化广播 ,CONNECTING 状态,正在连接
08-28 06:34:13.791  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:34:13.792  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/CONNECTING, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

9、wifi连接变化广播 ,CONNECTING/OBTAINING_IPADDR 状态,正在连接+请求分配ip
08-28 06:34:13.796  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:34:13.797  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

10、wifi连接变化广播 supplicant,OBTAINING_IPADDR 状态,请求分配ip
08-28 06:34:13.808  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:34:13.809  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = OBTAINING_IPADDR
08-28 06:34:13.812  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

11、wifi连接变化广播 ,CONNECTING/OBTAINING_IPADDR 状态,请求分配ip 完成
08-28 06:34:13.998  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:34:13.999  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTING/OBTAINING_IPADDR, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

12、wifi连接变化广播 ,CONNECTED 状态,连接完成
08-28 06:34:14.030  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:34:14.031  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

13、网络变化广播,ip变化
08-28 06:34:14.218  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 06:34:14.221  3984  3984 I WifiReceiverDemo: FunctionUtil.java(115)::getNetIpAddress - iF.getName() = wlan0 , ipAddress = 192.168.1.39
08-28 06:34:14.237  3984  3984 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = 192.168.1.39

上面日志可以看到,wifi打开后自动连接上wifi的情况,其实就是wifi单独打开的日志 加上 wifi单独连接上的日志情况。
过程:

打开并连接上wifi过程的广播:wifi正在打开--> wifi已打开 --> 连接中 --> 校验密码-->分配ip-->连接完成 --> ip 变化
(3)wifi未连接情况下关闭日志:
1、wifi开关变化广播,DISABLING 状态,正在关闭
08-28 03:45:02.249  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 03:45:02.250  8820  8820 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 0 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

wifi开关变化广播,DISABLING 状态,正在关闭
08-28 03:45:02.259  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 03:45:02.259  8820  8820 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 0 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

2、wifi开关变化广播,DISABLED 状态,完成关闭
08-28 03:45:02.347  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 03:45:02.348  8820  8820 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 1 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

3、wifi开关变化广播 supplicant,DISABLED 状态,完成关闭
08-28 03:45:02.366  8820  8820 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.CONNECTION_CHANGE
08-28 03:45:02.366  8820  8820 I WifiReceiverDemo: MainActivity.java(69)::onReceive - isWifiOn = false

上面的广播可以看出,wifi关闭的日志中 wifi.WIFI_STATE_CHANGED 和 supplicant.CONNECTION_CHANGE 效果是一样的。
wifi.WIFI_STATE_CHANGED 广播的过程相对来说详细一点。

过程:

关闭未连接的wifi过程的广播:wifi正在关闭--> wifi已关闭
(4)wifi已连接情况下关闭wifi 的日志:
1、wifi开关变化广播,DISABLING 状态,正在关闭
08-28 06:31:24.935  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 06:31:24.936  3984  3984 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 0 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

wifi开关变化广播,DISABLING 状态,正在关闭
08-28 06:31:24.944  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 06:31:24.944  3984  3984 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 0 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

2、wifi状态变化广播,DISCONNECTED 状态,断开
8-28 06:31:25.163  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.STATE_CHANGE
08-28 06:31:25.165  3984  3984 I WifiReceiverDemo: MainActivity.java(57)::onReceive - info = [type: WIFI[], state: DISCONNECTED/DISCONNECTED, reason: (unspecified), extra: (none), failover: false, available: false, roaming: false]

3、wifi状态变化广播 supplicant,DISCONNECTED 状态,断开
08-28 06:31:25.175  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.STATE_CHANGE
08-28 06:31:25.176  3984  3984 I WifiReceiverDemo: MainActivity.java(61)::onReceive - detailedState = DISCONNECTED
08-28 06:31:25.177  3984  3984 I WifiReceiverDemo: MainActivity.java(63)::onReceive - error = -1

4、wifi开关变化广播,DISABLED 状态,完成关闭
08-28 06:31:25.182  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.WIFI_STATE_CHANGED
08-28 06:31:25.182  3984  3984 I WifiReceiverDemo: MainActivity.java(53)::onReceive - wifiState = 1 (ex: 0=DISABLING, 1=DISABLED, 2=ENABLING, 3=ENABLED)

5、网络变化广播,ip变化
08-28 06:31:25.258  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.conn.CONNECTIVITY_CHANGE
08-28 06:31:25.263  3984  3984 I WifiReceiverDemo: MainActivity.java(49)::onReceive - wifiIp = null

4、wifi开关变化广播 supplicant,完成关闭
08-28 06:31:25.269  3984  3984 I WifiReceiverDemo: MainActivity.java(45)::onReceive - action = android.net.wifi.supplicant.CONNECTION_CHANGE
08-28 06:31:25.270  3984  3984 I WifiReceiverDemo: MainActivity.java(69)::onReceive - isWifiOn = false

从上面广播日志可以看到关闭WiFi的时候会,断开WiFi,还会有网络ip变化广播,之后是关闭完成广播。

过程:

关闭已连接的wifi过程的广播:wifi正在关闭--> 断开wifi网络 -->wifi已关闭 -->ip变化

上面这些广播日志对于大部分人没啥用,但是对于研究wifi连接过程是比较用作用的,很有参考价值。

根据项目需求,可以在对应的广播时间判断一些逻辑,比如wifi打开状态等,wifi连接状态,wifi密码验证情况等等。
广播的过程不仅仅是可以监听action 的Extra数据,还可以通过系统api,获取当前wifi或者ip情况进行确认。

四、其他

1、wifi常用广播小结

(1)wifi连接过程的广播:连接中-->校验密码-->分配ip-->连接完成 --> ip 变化
wifi断开、wifi开关的过程都比较简单,没啥好说的
(2)连接上wifi或者断开wifi都会有ip变化的广播
(3)wifi 打开和关闭状态的广播中,supplicant相关状态的广播没啥使用价值。
(4)wifi 连接状态的广播中,supplicant 状态的广播对于判断密码错误是有价值的。
(5)supplicant相关的广播毕竟是过时的广播,如果没有判断密码错误情况,就不要用supplicant相关的广播了

值得注意的是,连接上wifi后ip变化的时候马上获取ip,有出现过,获取到ip未空的情况;
规避这个问题可以可以通过WifiManager获取当前连接的wifi信息获取ip;(这个需要系统权限);
规避这个问题还可以延长一秒再获取ip。

最后再看一下本文开始说的容易混淆的几个广播和对应含义:

CONNECTIVITY_ACTION:网络ip变化广播
WIFI_STATE_CHANGED_ACTION :wifi开关变化广播
NETWORK_STATE_CHANGED_ACTION :wifi网络变化广播

SUPPLICANT_STATE_CHANGED_ACTION :wifi连接验证过程变化广播
SUPPLICANT_CONNECTION_CHANGE_ACTION :wifi开关变化广播

上面是wifi的还比较好区分的,
WIFI_STATE_CHANGED 这个是wifi开关,STATE_CHANGED 是wifi连接状态变化,多个wifi的就是开关的。

但是supplicant 这个确实不好记,和语义有点不符,
CONNECTION_CHANGE 的是开关变化,STATE_CHANGED是验证状态发生改变。
Connection就是连接的意思,但是CONNECTION_CHANGE居然是开关变化的广播;
不过这个 CONNECTION_CHANGE 尽量不要用了,没啥太大意义,wifi开关变化广播使用 WIFI_STATE_CHANGED_ACTION 就可以了。

2、wifi密码错误最正确的判断

	 case WifiManager.SUPPLICANT_STATE_CHANGED_ACTION: //wifi信息验证变化广播
			NetworkInfo.DetailedState detailedState = WifiInfo.getDetailedStateOf((SupplicantState) intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE));
			LogUtil.inform("detailedState = " + detailedState);
			int error = intent.getIntExtra(WifiManager.EXTRA_SUPPLICANT_ERROR, -1);
			LogUtil.inform("error = " + error);
			if (error == WifiManager.ERROR_AUTHENTICATING && detailedState == NetworkInfo.DetailedState.DISCONNECTED) { // 1 密码错误
				Toast.makeText(MainActivity.this, "wifi 密码错误!" ,Toast.LENGTH_LONG).show();
			}
		break;

网上很多文章只判断了error ==1 的情况,所以会多次弹框密码错误的情况。
所以网上的知识大多是仅供参考,还是要实际验证才可以。

3、如果查看wifi相关广播的Extra数据?

wifi广播携带了啥数据,这个怎么看?很多很多人都会有疑问?

这个其实不难,懂的都懂,学过一次后面就懂了,其实就是看api定义广播的地方,会写明该广播携带什么数据的。
这个不仅仅是针对wifi广播,其他任何广播其实都可以参考这样查看广播携带的数据。

比如wifi的某个广播:

WifiManager.java :

wifi连接变化广播 WifiManager.NETWORK_STATE_CHANGED_ACTION :

看源码的定义:

    /**
     * Broadcast intent action indicating that the state of Wi-Fi connectivity
     * has changed. An extra provides the new state
     * in the form of a {@link android.net.NetworkInfo} object.  No network-related
     * permissions are required to subscribe to this broadcast.
     *
     * 

This broadcast is not delivered to manifest receivers in * applications that target API version 26 or later. * @see #EXTRA_NETWORK_INFO // (1)Extra 数据,这里可能看不出啥类型的,继续找具体定义的地方就可以了 */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String NETWORK_STATE_CHANGED_ACTION = "android.net.wifi.STATE_CHANGE"; //(2)getParcelableExtra 返回的是NetworkInfo类型是数据, NetworkInfo 有啥数据可以自己看api或者打印出所有数据 /** * The lookup key for a {@link android.net.NetworkInfo} object associated with the //返回类型 * Wi-Fi network. Retrieve with * {@link android.content.Intent#getParcelableExtra(String)}. //获取额外数据的方法 */ public static final String EXTRA_NETWORK_INFO = "networkInfo";

这样就能看到广播返回的数据了吧,
主要思路:

1、查看广播携带的额外数据的字符串关键字
2、查看广播写得额外数据的类型
	case WifiManager.NETWORK_STATE_CHANGED_ACTION: //wifi连接变化广播,断开或者断开某个wifi
		NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
		LogUtil.inform("info = " + info);

再看一个其他类和其他类型的广播数据,ip变化广播:

ConnectivityManager.java

wifi连接变化广播 ConnectivityManager.CONNECTIVITY_ACTION :

	 // (1)Extra 数据,这里这里已经说明了是boolean类型,继续找具体定义的地方查看如何获取
     * For a disconnect event, the boolean extra EXTRA_NO_CONNECTIVITY
     * is set to {@code true} if there are no connected networks at all.
     *
     * @deprecated apps should use the more versatile {@link #requestNetwork},
     *             {@link #registerNetworkCallback} or {@link #registerDefaultNetworkCallback}
     *             functions instead for faster and more detailed updates about the network
     *             changes they care about.
     */
    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
    @Deprecated
    public static final String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE";

	//(2)getBooleanExtra 返回的是 boolean 类型是数据,返回的是是否没有连接网络	
    /**
     * The lookup key for a boolean that indicates whether there is a
     * complete lack of connectivity, i.e., no network is available.
     * Retrieve it with {@link android.content.Intent#getBooleanExtra(String,boolean)}.
     */
    public static final String EXTRA_NO_CONNECTIVITY = "noConnectivity";
	

上面的代码示例中,未添加这个数据打印,
这个数据也是今天看到的,代码中可以打印这个数据:

	case ConnectivityManager.CONNECTIVITY_ACTION: //网络变化广播,一般是ip地址变化
		boolean isNetNotConnectivity = intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
		//是否网络未连接
		LogUtil.inform("isNetNotConnectivity = " + isNetNotConnectivity); //如果有ip,返回就是false;也就是说断开wifi是返回 true,连接wifi是返回 false
		String wifiIp = FunctionUtil.getNetIpAddress("wlan0");
		LogUtil.inform("wifiIp = " + wifiIp);

学到了这个,其他任何广播都参考这样就可以找到广播携带的数据了。

是否可以在一个广播里面判断其他Extra 数据?

可能还有人会问,是否可以在广播中获取其他的 Extra 数据。

比如在 ConnectivityManager.CONNECTIVITY_ACTION 广播中是否可以获取wifi开关和wifi连接状态的 Extra 数据。

其实这个问题,学过基础知识的都知道,他没发过来的数据,你获取到的就是空的。所以没啥好疑问的。

	case ConnectivityManager.CONNECTIVITY_ACTION: //网络变化广播,一般是ip地址变化
		boolean isNetNotConnectivity = intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
		LogUtil.inform("isNetNotConnectivity = " + isNetNotConnectivity);
		
		NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO); //这个数据就是会 null
		LogUtil.inform("info = " + info);

所以说广播里面携带了相关Extra的数据才能获取到,未携带的是获取不到的。

具体的过程,发送数据的具体信息,可以看源码里面发送广播的地方。

4、wifi其他相关广播

wifi相关广播,除了上面介绍的开关和连接相关的广播,
还有很多其他广播,直接在WifiManager.java里面搜索关键字“Broadcast intent action ”可以搜到里面所有的广播action。

其他广播:

    //wifi 验证信息变化
    /**
     * Broadcast intent action indicating that the credential of a Wi-Fi network
     * has been changed. One extra provides the ssid of the network. Another
     * extra provides the event type, whether the credential is saved or forgot.
     * @hide
     */
    @SystemApi
    public static final String WIFI_CREDENTIAL_CHANGED_ACTION = "android.net.wifi.WIFI_CREDENTIAL_CHANGED";

    //"Deauth Imminent" 是一种特定于 Wi-Fi 网络的管理帧,主要用于 Passpoint 认证过程
    /**
     * Broadcast intent action indicating that a Passpoint Deauth Imminent frame has been received.
     *
     * Included extras:
     * {@link #EXTRA_BSSID_LONG}
     * {@link #EXTRA_ESS}
     * {@link #EXTRA_DELAY}
     * {@link #EXTRA_URL}
     *
     * Receiver Required Permission: android.Manifest.permission.ACCESS_WIFI_STATE
     *
     * 

Note: The broadcast is only delivered to registered receivers - no manifest registered * components will be launched. * * @hide */ public static final String ACTION_PASSPOINT_DEAUTH_IMMINENT = "android.net.wifi.action.PASSPOINT_DEAUTH_IMMINENT"; //热点开关变化 @SystemApi public static final String WIFI_AP_STATE_CHANGED_ACTION = "android.net.wifi.WIFI_AP_STATE_CHANGED"; @SystemApi @RequiresPermission(android.Manifest.permission.NETWORK_CARRIER_PROVISIONING) public static final String ACTION_NETWORK_SETTINGS_RESET = "android.net.wifi.action.NETWORK_SETTINGS_RESET"; //wifi信息重置?(恢复出厂设置那里,有个wif重置) @SystemApi @RequiresPermission(android.Manifest.permission.NETWORK_CARRIER_PROVISIONING) public static final String ACTION_NETWORK_SETTINGS_RESET = "android.net.wifi.action.NETWORK_SETTINGS_RESET"; //wifi信息修改 @SystemApi public static final String CONFIGURED_NETWORKS_CHANGED_ACTION ="android.net.wifi.CONFIGURED_NETWORKS_CHANGE"; //常用的wifi开关广播,其他常用广播就不再罗列了。 /** * Broadcast intent action indicating that Wi-Fi has been enabled, disabled, * enabling, disabling, or unknown. One extra provides this state as an int. * Another extra provides the previous state, if available. No network-related * permissions are required to subscribe to this broadcast. * *

This broadcast is not delivered to manifest receivers in * applications that target API version 26 or later. * * @see #EXTRA_WIFI_STATE * @see #EXTRA_PREVIOUS_WIFI_STATE */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String WIFI_STATE_CHANGED_ACTION = "android.net.wifi.WIFI_STATE_CHANGED";

还有些广播,没使用过,并且看里面的注释也不清楚具体用途,就不一一罗列了。

可以看到很多不常用的广播都是需要系统权限才能监听到。

5、本文用到的获取ip代码

Android 获取ip地址多种方式介绍:
https://blog.csdn.net/wenzhi20102321/article/details/141673195

5、Android 蓝牙相关广播介绍

主要是开关,配对,取消配对,蓝牙名称修改等广播;
详细介绍:
https://blog.csdn.net/wenzhi20102321/article/details/134956116

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