监听网络状态

最新推荐文章于 2025-02-19 17:42:25 发布

原创最新推荐文章于 2025-02-19 17:42:25 发布 · 241 阅读

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#网络 #广播

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监听网络状态，依旧笔记

    //检测网络是否可用
    public static boolean isNetworkAvailable(Activity mActivity) {
        Context context = mActivity.getApplicationContext();
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivityManager == null) {
            return false;
        } else {
            // 获取当前连接可用的网络
            NetworkInfo mNetworkInfo = connectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null) {
                Log.d(TAG, "isNetworkAvailable: 当前网络连接" + mNetworkInfo.isAvailable());
                return mNetworkInfo.isAvailable();
            }
        }
        return false;
    }

一般要监听网络变化，用广播实现。

public class NetWorkReceiver extends BroadcastReceiver {

    private static final String TAG = "NetWorkReceiver";

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.e(TAG, "网络状态改变");
        boolean success = false;

//        //获得网络连接服务
//        ConnectivityManager connManager = (ConnectivityManager)
//context.getSystemService(CONNECTIVITY_SERVICE);
//        // State state = connManager.getActiveNetworkInfo().getState();
//
//        //新版本获取网络状态
//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
//            Network[] networks = connManager.getAllNetworks();
//            NetworkInfo networkInfo;
//            for (Network mNetwork : networks) {
//                networkInfo = connManager.getNetworkInfo(mNetwork);
//                if (networkInfo.getState().equals(NetworkInfo.State.CONNECTED)) {
//                    success = true;
//                }
//            }
//        }else {
//            //旧版本方法
//            if (connManager != null) {
//                NetworkInfo[] info = connManager.getAllNetworkInfo();
//                if (info != null) {
//                    for (NetworkInfo anInfo : info) {
//                        if (anInfo.getState() == NetworkInfo.State.CONNECTED) {
//                            success = true;
//                            Log.d(TAG, "NETWORKNAME: " + anInfo.getTypeName());
//                        }
//                    }
//                }
//            }
//        }

        success = SystemSetting.isNetworkAvailable((Activity) context);

        if (!success) {
            Toast.makeText(context, "网络出错，请检查网络连接", Toast.LENGTH_LONG).show();
        }
    }
}

//onCreate()注册网络监听
netWorkReceiver = new NetWorkReceiver();
IntentFilter filterNetwork = new IntentFilter();
filterNetwork.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(netWorkReceiver, filterNetwork);

//onDestroy()注销广播
unregisterReceiver(netWorkReceiver);