Android网络监听和网络判断示例介绍
作者：抱着回忆旅行
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一、在AndroidMainfest.xml中添加权限
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.INTERNET" />
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<String> 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
//....
}
}
}
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