下面這個代碼首先會檢查手機的wifi是否已經連接，如果沒有連接就會跳轉到系統的設置頁面。 我首先在編譯器里面通過連接手機查找手機打開設置頁面是調用系統的哪個Activity，最后截出來的信息是： 03-01 15:40:54.293: V/ActivityManager(573): ACT-Launching: ActivityRecord{423fb8f8 u0 com.android.settings/.HWSettings} 根據這條信息可以知道設置頁面是哪個包和哪個類。代碼通俗易懂。。 ~~~ package com.example.mytest; import android.net.wifi.WifiManager; import android.os.Bundle; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.view.Menu; import android.widget.Toast; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); WifiManager wifiManager = (WifiManager) this .getSystemService(Context.WIFI_SERVICE); if (wifiManager.isWifiEnabled() == true) { Toast.makeText(this, "wifi可用", 0); } else { Toast.makeText(this, "wifi不可用", 0); //03-01 15:40:54.293: V/ActivityManager(573): ACT-Launching: ActivityRecord{423fb8f8 u0 com.android.settings/.HWSettings} Intent intent = new Intent(); intent.setClassName("com.android.settings", "com.android.settings.HWSettings"); startActivity(intent); } } } ~~~