Android网络监听和网络判断的示例分析

本篇文章给大家分享的是有关Android网络监听和网络判断的示例分析，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。

一、在AndroidMainfest.xml中添加权限

二、NetUtilSS 网络判断工具类

import android.app.Activity;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.location.LocationManager;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.telephony.TelephonyManager;import android.util.Log;import java.util.List;  public class NetUtilSS {    // 没有连接    public static final int NETWORN_NONE = 0;    // wifi连接    public static final int NETWORN_WIFI = 1;    // 手机网络数据连接    public static final int NETWORN_2G = 2;     public static final int NETWORN_3G = 3;     public static final int NETWORN_4G = 4;     public static final int NETWORN_MOBILE = 5;     private NetUtilSS() {        /* cannot be instantiated */        throw new UnsupportedOperationException("cannot be instantiated");    }     /**     * 判断网络是否连接     *     * @param context     * @return     */    public static boolean isConnected(Context context) {         ConnectivityManager connectivity = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        // 如果仅仅是用来判断网络连接         if (null != connectivity) {             NetworkInfo info = connectivity.getActiveNetworkInfo();            if (null != info && info.isConnected()) {                if (info.getState() == NetworkInfo.State.CONNECTED) {                    return true;                }            }        }        return false;    }     /**     * 判断GPS是否打开     *     * @param context     * @return     */     public static boolean isGpsEnabled(Context context) {        LocationManager lm = ((LocationManager) context                .getSystemService(Context.LOCATION_SERVICE));        List accessibleProviders = lm.getProviders(true);        return accessibleProviders != null && accessibleProviders.size() > 0;    }     /**     * 判断是否是3G网络     * @param context     * @return     */     public static boolean is3rd(Context context) {        ConnectivityManager cm = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo networkINfo = cm.getActiveNetworkInfo();        if (networkINfo != null                && networkINfo.getType() == ConnectivityManager.TYPE_MOBILE) {            return true;        }        return false;    }     /**     * 判断是wifi还是3g网络,用户的体现性在这里了，wifi就可以建议下载或者在线播放。     *     * @param context     * @return     */     public static boolean isWifi(Context context) {        ConnectivityManager cm = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo networkINfo = cm.getActiveNetworkInfo();        if (networkINfo != null                && networkINfo.getType() == ConnectivityManager.TYPE_WIFI) {            return true;        }        return false;    }     /**     * 打开网络设置界面     */    public static void openSetting(final Activity activity) {        Log.e("netutils", "我是网络1111");        final AlertDialog.Builder builder = new AlertDialog.Builder(activity);        builder.setTitle("开启网络服务");        builder.setMessage("网络没有连接，请到设置进行网络设置！");        builder.setPositiveButton("确定",                new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int which) {                        if (android.os.Build.VERSION.SDK_INT > 10) {                            // 3.0以上打开设置界面，也可以直接用ACTION_WIRELESS_SETTINGS打开到wifi界面                            activity.startActivity(new Intent(                                    android.provider.Settings.ACTION_SETTINGS));                        } else {                            activity.startActivity(new Intent(                                    android.provider.Settings.ACTION_WIRELESS_SETTINGS));                        }                        dialog.cancel();                    }                });         builder.setNegativeButton("取消",                new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        dialog.cancel();                         Log.e("netutils", "我是网络");                    }                });        builder.show();    }     /**     * 返回当前网络连接类型     *     * @param context 上下文     * @return     */    public static int getNetworkState(Context context) {         ConnectivityManager connManager = (ConnectivityManager) context                 .getSystemService(Context.CONNECTIVITY_SERVICE);         if (null == connManager)             return NETWORN_NONE;         NetworkInfo activeNetInfo = connManager.getActiveNetworkInfo();         if (activeNetInfo == null || !activeNetInfo.isAvailable()) {             return NETWORN_NONE;         }        // Wifi        NetworkInfo wifiInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);         if (null != wifiInfo) {             NetworkInfo.State state = wifiInfo.getState();             if (null != state)                 if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {                     return NETWORN_WIFI;                 }         }        // 网络        NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);         if (null != networkInfo) {             NetworkInfo.State state = networkInfo.getState();             String strSubTypeName = networkInfo.getSubtypeName();             if (null != state)                if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {                     switch (activeNetInfo.getSubtype()) {                         case TelephonyManager.NETWORK_TYPE_GPRS: // 联通2g                         case TelephonyManager.NETWORK_TYPE_CDMA: // 电信2g                         case TelephonyManager.NETWORK_TYPE_EDGE: // 移动2g                         case TelephonyManager.NETWORK_TYPE_1xRTT:                         case TelephonyManager.NETWORK_TYPE_IDEN:                             return NETWORN_2G;                         case TelephonyManager.NETWORK_TYPE_EVDO_A: // 电信3g                         case TelephonyManager.NETWORK_TYPE_UMTS:                         case TelephonyManager.NETWORK_TYPE_EVDO_0:                         case TelephonyManager.NETWORK_TYPE_HSDPA:                         case TelephonyManager.NETWORK_TYPE_HSUPA:                         case TelephonyManager.NETWORK_TYPE_HSPA:                         case TelephonyManager.NETWORK_TYPE_EVDO_B:                         case TelephonyManager.NETWORK_TYPE_EHRPD:                         case TelephonyManager.NETWORK_TYPE_HSPAP:                             return NETWORN_3G;                         case TelephonyManager.NETWORK_TYPE_LTE:                             return NETWORN_4G;                         default://有机型返回16,17                             //中国移动 联通 电信 三种3G制式                             if (strSubTypeName.equalsIgnoreCase("TD-SCDMA") || strSubTypeName.equalsIgnoreCase("WCDMA") || strSubTypeName.equalsIgnoreCase("CDMA2000")) {                                 return NETWORN_3G;                             } else {                                 return NETWORN_MOBILE;                             }                    }                }        }        return NETWORN_NONE;    }}

三、IntentReceiver网络监听工具类

import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo; public class IntentReceiver extends BroadcastReceiver {    private boolean isnet ;    @Override    public void onReceive(Context context, Intent intent) {        ConnectivityManager manager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo activeNetworkInfo = manager.getActiveNetworkInfo();        if (isnet == true){            if (activeNetworkInfo != null && activeNetworkInfo.isAvailable()){                ToastUtils.getInstance(context).show("网络连接成功",1000);                SpUtils.putString(context,"network","有网");                isnet = false;            }else{                ToastUtils.getInstance(context).show("网络开小差了",1000);                SpUtils.putString(context,"network","无网");                isnet = true;            }        }else{            isnet = true;        }        isnet = true;    }}

四、BaseActivity

import androidx.appcompat.app.AppCompatActivity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.IntentFilter;import android.net.ConnectivityManager;import android.os.Bundle;import android.widget.Toast; public class BaseActivity extends AppCompatActivity {     private BroadcastReceiver receiver =  new IntentReceiver();     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_base);         IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);        this.registerReceiver(receiver,filter);         boolean connected = NetUtilSS.isConnected(this);        if (connected) {            boolean wifi = NetUtilSS.isWifi(this);            boolean rd = NetUtilSS.is3rd(this);            if (wifi) {                Toast.makeText(this, "WIFI已经连接", Toast.LENGTH_SHORT).show();                SpUtils.putString(this,"network","有网");            } else if (rd) {                Toast.makeText(this, "手机流量已经连接", Toast.LENGTH_SHORT).show();                SpUtils.putString(this,"network","有网");            } else {                Toast.makeText(this, "网络连接不可用，请检查网络设置", Toast.LENGTH_SHORT).show();                SpUtils.putString(this,"network","无网");//                NetUtilSS.openSetting((Activity) mContext);            }        } else {            Toast.makeText(this, "网络连接不可用，请检查网络设置", Toast.LENGTH_SHORT).show();            SpUtils.putString(this,"network","无网");//            NetUtilSS.openSetting((Activity) mContext);        }    }     public static boolean isNetwork(Context context){        String network = SpUtils.getString(context, "network");        if (network.equals("有网")){            return true;        }        return false;    }     @Override    protected void onDestroy() {        super.onDestroy();        unregisterReceiver(receiver);    } }

五、MainActivity

import androidx.appcompat.app.AppCompatActivity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.TextView; public class MainActivity extends BaseActivity {     String TAG  =  "MainActivity";     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);          if (isNetwork(this)){            Log.e(TAG,"有网");            //请求            //....         }else {            Log.e(TAG,"无网");            //提示            //....        }    }}

以上就是Android网络监听和网络判断的示例分析，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注行业资讯频道。