if (state == SupplicantState.DISCONNECTED && mLastState == SupplicantState.AUTHENTICATING){ Intent intent = new Intent("android.net.wifi.supplicant.STATE_CHANGE_SSID"); String Ssid = stateChangeResult.wifiSsid; log("wrong password ssid" + Ssid ); intent.putExtra("wpSsid", Ssid); mContext.sendBroadcast(intent); } mLastState = state;
时间: 2024-03-29 09:35:00 浏览: 22
这段代码是关于 Android Wi-Fi 连接的,当 Wi-Fi 的状态为 DISCONNECTED 且上一次的状态为 AUTHENTICATING 时,会发送一个广播。该广播的意图是通知应用程序发生了 Wi-Fi 状态的变化,并附带了一个字符串参数 "wpSsid",用于指示错误密码的 SSID。此外,这段代码还记录了当前的 Wi-Fi 状态,并将其赋值给 mLastState 变量,以备下一次使用。
相关问题
改正下列代码中的错误 :_.api('offBluetoothAdapterStateChange').then(__ => __).catch(__ => __); _.on('onBluetoothAdapterStateChange','' ,res => { this.bm.log('onBluetoothAdapterStateChange', res); if (res.available && !this.isAvailableAdapter) { this.isAvailableAdapter = true; this.callBackConnectStatus(SuccessCallbackEvent.Success_ConnectStatus_CB_PowerOn); } else if (!res.available) { this.isAvailableAdapter = false; // 支付宝小程序当蓝牙适配器关闭,再次进行蓝牙操作需要重新打开,微信只需要打开一次就行 _.getAppPlatform() === 'ant' && (this.isInitializedAdapter = false); this.bm.connectStatus = ConnectStatus.disconnected; this.callBackConnectStatus(ErrorCallbackEvent.Error_ConnectStatus_CB_PowerOff); } });
下面是改正后的代码,主要是将 `_.api('offBluetoothAdapterStateChange')` 改为 `_.off('onBluetoothAdapterStateChange')`,并且添加了参数 `'onBluetoothAdapterStateChange'`:
```javascript
_.off('onBluetoothAdapterStateChange', 'onBluetoothAdapterStateChange')
.then(__ => __)
.catch(__ => __);
_.on('onBluetoothAdapterStateChange', 'onBluetoothAdapterStateChange', res => {
this.bm.log('onBluetoothAdapterStateChange', res);
if (res.available && !this.isAvailableAdapter) {
this.isAvailableAdapter = true;
this.callBackConnectStatus(SuccessCallbackEvent.Success_ConnectStatus_CB_PowerOn);
} else if (!res.available) {
this.isAvailableAdapter = false;
// 支付宝小程序当蓝牙适配器关闭,再次进行蓝牙操作需要重新打开,微信只需要打开一次就行
_.getAppPlatform() === 'ant' && (this.isInitializedAdapter = false);
this.bm.connectStatus = ConnectStatus.disconnected;
this.callBackConnectStatus(ErrorCallbackEvent.Error_ConnectStatus_CB_PowerOff);
}
});
```
这样修改后,应该就能够正确地监听和处理蓝牙适配器状态变化事件了。
小程序代码: “ openAndListenBluetoothAdapter() { // 未初始化蓝牙适配器,打开蓝牙适配器 if (!this.isInitializedAdapter) { // // 监听蓝牙适配器状态 _.api('onBluetoothAdapterStateChange', 'onBluetoothAdapterStateChange') .then(__ => __) .catch(__ => __); _.on('onBluetoothAdapterStateChange', 'onBluetoothAdapterStateChange', res => { this.bm.log('onBluetoothAdapterStateChange', res); if (res.available && !this.isAvailableAdapter) { this.isAvailableAdapter = true; this.callBackConnectStatus(SuccessCallbackEvent.Success_ConnectStatus_CB_PowerOn); } else if (!res.available) { this.isAvailableAdapter = false; // 支付宝小程序当蓝牙适配器关闭,再次进行蓝牙操作需要重新打开,微信只需要打开一次就行 _.getAppPlatform() === 'ant' && (this.isInitializedAdapter = false); this.bm.connectStatus = ConnectStatus.disconnected; this.callBackConnectStatus(ErrorCallbackEvent.Error_ConnectStatus_CB_PowerOff); } }); // 先关闭再打开蓝牙适配器,避免出现某些机型打开无效的情况 return _.api('closeBluetoothAdapter') .then(__ => { // 打开蓝牙适配器 return _.api('openBluetoothAdapter') }).then(res => { this.bm.log('openBluetoothAdapter success', res); this.isInitializedAdapter = true; this.isAvailableAdapter = true; return Promise.resolve(); }).catch(e => { this.bm.log('openBluetoothAdapter fail', e); this.isInitializedAdapter = false; this.isAvailableAdapter = false; this.bm.connectStatus = ConnectStatus.disconnected; return Promise.reject(e); }) } else { return Promise.resolve(); } } ” 。提示错误“onOnBluetoothAdapterStateChange should accept a function instead of object” ,请修改
把代码中的:
```
_.api('onBluetoothAdapterStateChange', 'onBluetoothAdapterStateChange')
.then(__ => __)
.catch(__ => __);
```
修改为:
```
_.api('onBluetoothAdapterStateChange', res => {
this.bm.log('onBluetoothAdapterStateChange', res);
if (res.available && !this.isAvailableAdapter) {
this.isAvailableAdapter = true;
this.callBackConnectStatus(SuccessCallbackEvent.Success_ConnectStatus_CB_PowerOn);
} else if (!res.available) {
this.isAvailableAdapter = false;
_.getAppPlatform() === 'ant' && (this.isInitializedAdapter = false);
this.bm.connectStatus = ConnectStatus.disconnected;
this.callBackConnectStatus(ErrorCallbackEvent.Error_ConnectStatus_CB_PowerOff);
}
});
```
这是因为在调用 `_.api('onBluetoothAdapterStateChange', 'onBluetoothAdapterStateChange')` 方法时,第二个参数应该是一个函数而不是一个字符串。修改后,将在函数内部处理蓝牙适配器状态的变化。