Android之检查网络是否可用（跳转网络设置页面）

    private boolean NetWorkStatus() {        ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);        // cwjManager.getActiveNetworkInfo();        boolean netSataus = true;        if (cwjManager.getActiveNetworkInfo() != null) {            netSataus = cwjManager.getActiveNetworkInfo().isAvailable();            Toast.makeText(this, "网络已经打开", Toast.LENGTH_LONG).show();        } else {            Builder b = new AlertDialog.Builder(this).setTitle("没有可用的网络")                    .setMessage("是否对网络进行设置？");            b.setPositiveButton("是", 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");                    // 如果在设置完成后需要再次进行操作，可以重写操作代码，在这里不再重写                    startActivityForResult(mIntent, 0);                }            }).setNeutralButton("否", new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog, int whichButton) {                    dialog.cancel();                }            }).show();        }        return netSataus;    }

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

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