Android检测网络状态，开启Wifi

傷城~ 2021-11-10 01:56 353阅读 0赞

private boolean CheckWifiNetworkStatus() {
           boolean flag = false;
           ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
           if (manager.getActiveNetworkInfo() != null){
               flag = manager.getActiveNetworkInfo().isAvailable();
           }
           if (!flag) {
               Builder b = new AlertDialog.Builder(this).setTitle("没有可用的GPRS或WIFI网络").setMessage("开启GPRS或WIFI网络连接");
               b.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int whichButton) {
                       Intent mIntent = new Intent("/");
                       ComponentName comp = new ComponentName("com.android.settings", "com.android.settings.WirelessSettings");
                       mIntent.setComponent(comp);
                       mIntent.setAction("android.intent.action.VIEW");
                       startActivity(mIntent);
                   }
               }).setNeutralButton("取消", new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int whichButton) {
                       dialog.cancel();
                   }
               }).create();
               b.show();
           }
           return flag;
       }

在AndroidManifest.xml中加入权限

<uses-permission android:name="android.permission.INTERNET" />
     
        
        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />