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  • Android 判断当前联网的类型 wifi、移动数据流量

    先获取系统管理网络连接的Manager:

    ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

    再获取当前已经激活的连接:(当期为null时代表当前无连接)

    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();

    其中常量ConnectivityManager.TYPE_MOBILE标识着是移动数据流量,

    而ConnectivityManager.TYPE_WIFI标志着是wifi。

    package com.example.NetworkChangeReceiver2;
    
    import android.app.Activity;
    import android.content.Context;
    import android.net.ConnectivityManager;
    import android.net.NetworkInfo;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Toast;
    
    public class MyActivity extends Activity {
    
        ConnectivityManager connectivityManager;
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
    
            connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        }
    
        public void isWifi(View view) {
            NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
            if (activeNetworkInfo == null) {
                Toast.makeText(this, "没有联网!", 1).show();
                return;
            }
            if(activeNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                Toast.makeText(this, "连接的网络是wifi!", 1).show();
            } else {
                Toast.makeText(this, "不是wifi!", 1).show();
            }
        }
    
        public void isMobile(View view) {
            NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
            if (activeNetworkInfo == null) {
                Toast.makeText(this, "没有联网!", 1).show();
                return;
            }
            if(activeNetworkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
                Toast.makeText(this, "连接的网络是移动数据流量!", 1).show();
            } else {
                Toast.makeText(this, "不是移动数据流量!", 1).show();
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/wuyou/p/3676868.html
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