用E4A制作一个连接wifi的app
时间: 2023-12-03 17:47:42 浏览: 82
以下是使用E4A制作连接WiFi的简单步骤:
1. 打开E4A软件,创建一个新项目。
2. 在“模块1”中添加以下代码:
```
Sub Activity_Create(FirstTime As Boolean)
' 设置界面布局
Dim pnlMain As Panel
pnlMain.Initialize("")
Activity.AddView(pnlMain, 0, 0, 100%x, 100%y)
' 添加WiFi名称输入框
Dim edtSSID As EditText
edtSSID.Initialize("")
pnlMain.AddView(edtSSID, 20dip, 20dip, 80%x, 40dip)
' 添加WiFi密码输入框
Dim edtPassword As EditText
edtPassword.Initialize("")
edtPassword.PasswordMode = True
pnlMain.AddView(edtPassword, 20dip, 80dip, 80%x, 40dip)
' 添加连接按钮
Dim btnConnect As Button
btnConnect.Initialize("btnConnect_Click")
btnConnect.Text = "连接"
pnlMain.AddView(btnConnect, 20dip, 140dip, 80%x, 40dip)
End Sub
Sub btnConnect_Click
' 获取WiFi名称和密码
Dim ssid As String = edtSSID.Text.Trim
Dim password As String = edtPassword.Text.Trim
' 连接WiFi
If ConnectWiFi(ssid, password) Then
ToastMessageShow("连接成功!", True)
Else
ToastMessageShow("连接失败,请检查WiFi名称和密码是否正确!", True)
End If
End Sub
' 连接WiFi
Sub ConnectWiFi(ssid As String, password As String) As Boolean
Dim wifiManager As JavaObject
wifiManager.InitializeStatic("android.net.wifi.WifiManager")
If Not wifiManager.RunMethod("isWifiEnabled", Null) Then
wifiManager.RunMethod("setWifiEnabled", Array(True))
End If
Dim wifiConfig As JavaObject
wifiConfig.InitializeNewInstance("android.net.wifi.WifiConfiguration", Null)
wifiConfig.RunMethod("setValue", Array(ssid))
wifiConfig.RunMethod("setValue", Array(password))
wifiConfig.RunMethod("setValue", Array("WPA"))
wifiConfig.RunMethod("setValue", Array("WPA2"))
wifiConfig.RunMethod("setValue", Array("WPA/WPA2 PSK"))
wifiConfig.RunMethod("setValue", Array(password))
Dim wifiManagerConfig As JavaObject
wifiManagerConfig.InitializeStatic("android.net.wifi.WifiManager$WifiLock")
Dim wifiLock As JavaObject
wifiLock.Initialize(wifiManagerContext)
wifiLock.RunMethod("acquire", Null)
Dim netId As Int = wifiManager.RunMethod("addNetwork", Array(wifiConfig))
If netId = -1 Then Return False
wifiManager.RunMethod("disconnect", Null)
wifiManager.RunMethod("enableNetwork", Array(netId, True))
wifiManager.RunMethod("reconnect", Null)
Return True
End Sub
```
3. 运行应用程序,输入WiFi名称和密码,然后点击“连接”按钮即可连接WiFi网络。
注意:需要在AndroidManifest.xml文件中添加以下权限:
```
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<<uses-permission android:name="android.permission.INTERNET"/>
```
以上就是使用E4A制作连接WiFi的简单步骤。