网络状态

package com.example.broadcast;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.widget.TextView;

import androidx.annotation.Nullable;

public class NetworkActivity extends Activity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.act_power);

        TextView textView = findViewById(R.id.txt_power);
        BroadcastReceiver connectionReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
                NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
                NetworkInfo wifiNetInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
                if (!mobNetInfo.isConnected() && !wifiNetInfo.isConnected()) {
                    textView.setText("无网络连接");
                    // unconnect network
                } else if (wifiNetInfo.isConnected()) {
                    textView.setText("已连接WIFI");
                    // connect wifi
                } else {
                    textView.setText("已连接移动网络");
                }
            }
        };
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
        registerReceiver(connectionReceiver, intentFilter);
    }
}

网络状态

原文：https://www.cnblogs.com/codezhou/p/14736975.html