1 files changed, 192 insertions, 0 deletions
diff --git a/java/com/android/dialer/common/NetworkUtil.java b/java/com/android/dialer/common/NetworkUtil.java
new file mode 100644
index 000000000..47d84243e
--- /dev/null
+++ b/java/com/android/dialer/common/NetworkUtil.java
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.dialer.common;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.net.wifi.WifiInfo;
+import android.net.wifi.WifiManager;
+import android.support.annotation.Nullable;
+import android.support.annotation.RequiresPermission;
+import android.support.annotation.StringDef;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.Objects;
+
+/** Utility class for dealing with network */
+public class NetworkUtil {
+
+  /* Returns the current network type. */
+  @RequiresPermission("android.permission.ACCESS_NETWORK_STATE")
+  @NetworkType
+  public static String getCurrentNetworkType(@Nullable Context context) {
+    if (context == null) {
+      return NetworkType.NONE;
+    }
+    ConnectivityManager connectivityManager =
+        (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+    return getNetworkType(connectivityManager.getActiveNetworkInfo());
+  }
+
+  /* Returns the current network info. */
+  @Nullable
+  @RequiresPermission("android.permission.ACCESS_NETWORK_STATE")
+  public static NetworkInfo getCurrentNetworkInfo(@Nullable Context context) {
+    if (context == null) {
+      return null;
+    }
+    ConnectivityManager connectivityManager =
+        (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+    return connectivityManager.getActiveNetworkInfo();
+  }
+
+  /**
+   * Returns the current network type as a string. For mobile network types the subtype name of the
+   * network is appended.
+   */
+  @RequiresPermission("android.permission.ACCESS_NETWORK_STATE")
+  public static String getCurrentNetworkTypeName(@Nullable Context context) {
+    if (context == null) {
+      return NetworkType.NONE;
+    }
+    ConnectivityManager connectivityManager =
+        (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+    NetworkInfo netInfo = connectivityManager.getActiveNetworkInfo();
+    @NetworkType String networkType = getNetworkType(netInfo);
+    if (isNetworkTypeMobile(networkType)) {
+      return networkType + " (" + netInfo.getSubtypeName() + ")";
+    }
+    return networkType;
+  }
+
+  @NetworkType
+  public static String getNetworkType(@Nullable NetworkInfo netInfo) {
+    if (netInfo == null || !netInfo.isConnected()) {
+      return NetworkType.NONE;
+    }
+    switch (netInfo.getType()) {
+      case ConnectivityManager.TYPE_WIFI:
+        return NetworkType.WIFI;
+      case ConnectivityManager.TYPE_MOBILE:
+        return getMobileNetworkType(netInfo.getSubtype());
+      default:
+        return NetworkType.UNKNOWN;
+    }
+  }
+
+  public static boolean isNetworkTypeMobile(@NetworkType String networkType) {
+    return Objects.equals(networkType, NetworkType.MOBILE_2G)
+        || Objects.equals(networkType, NetworkType.MOBILE_3G)
+        || Objects.equals(networkType, NetworkType.MOBILE_4G);
+  }
+
+  @RequiresPermission("android.permission.ACCESS_NETWORK_STATE")
+  public static String getCurrentNetworkName(Context context) {
+    @NetworkType String networkType = getCurrentNetworkType(context);
+    switch (networkType) {
+      case NetworkType.WIFI:
+        return getWifiNetworkName(context);
+      case NetworkType.MOBILE_2G:
+      case NetworkType.MOBILE_3G:
+      case NetworkType.MOBILE_4G:
+      case NetworkType.MOBILE_UNKNOWN:
+        return getMobileNetworkName(context);
+      default:
+        return "";
+    }
+  }
+
+  private static String getWifiNetworkName(Context context) {
+    WifiManager wifiMgr = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+    String name = null;
+    if (context.checkSelfPermission("android.permission.ACCESS_WIFI_STATE")
+        == PackageManager.PERMISSION_GRANTED) {
+      //noinspection MissingPermission
+      WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
+      if (wifiInfo == null) {
+        return "";
+      }
+      name = wifiInfo.getSSID();
+    }
+    return TextUtils.isEmpty(name)
+        ? context.getString(R.string.network_name_wifi)
+        : name.replaceAll("\"", "");
+  }
+
+  private static String getMobileNetworkName(Context context) {
+    TelephonyManager telephonyMgr =
+        (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+    String name = telephonyMgr.getNetworkOperatorName();
+    return TextUtils.isEmpty(name)
+        ? context.getString(R.string.network_name_mobile)
+        : name.replaceAll("\"", "");
+  }
+
+  @NetworkType
+  private static String getMobileNetworkType(int networkSubtype) {
+    switch (networkSubtype) {
+      case TelephonyManager.NETWORK_TYPE_1xRTT:
+      case TelephonyManager.NETWORK_TYPE_CDMA:
+      case TelephonyManager.NETWORK_TYPE_EDGE:
+      case TelephonyManager.NETWORK_TYPE_GPRS:
+      case TelephonyManager.NETWORK_TYPE_IDEN:
+        return NetworkType.MOBILE_2G;
+      case TelephonyManager.NETWORK_TYPE_EHRPD:
+      case TelephonyManager.NETWORK_TYPE_EVDO_0:
+      case TelephonyManager.NETWORK_TYPE_EVDO_A:
+      case TelephonyManager.NETWORK_TYPE_EVDO_B:
+      case TelephonyManager.NETWORK_TYPE_HSDPA:
+      case TelephonyManager.NETWORK_TYPE_HSPA:
+      case TelephonyManager.NETWORK_TYPE_HSPAP:
+      case TelephonyManager.NETWORK_TYPE_HSUPA:
+      case TelephonyManager.NETWORK_TYPE_UMTS:
+        return NetworkType.MOBILE_3G;
+      case TelephonyManager.NETWORK_TYPE_LTE:
+        return NetworkType.MOBILE_4G;
+      default:
+        return NetworkType.MOBILE_UNKNOWN;
+    }
+  }
+
+  /** Network types. */
+  @Retention(RetentionPolicy.SOURCE)
+  @StringDef(
+    value = {
+      NetworkType.NONE,
+      NetworkType.WIFI,
+      NetworkType.MOBILE_2G,
+      NetworkType.MOBILE_3G,
+      NetworkType.MOBILE_4G,
+      NetworkType.MOBILE_UNKNOWN,
+      NetworkType.UNKNOWN
+    }
+  )
+  public @interface NetworkType {
+
+    String NONE = "NONE";
+    String WIFI = "WIFI";
+    String MOBILE_2G = "MOBILE_2G";
+    String MOBILE_3G = "MOBILE_3G";
+    String MOBILE_4G = "MOBILE_4G";
+    String MOBILE_UNKNOWN = "MOBILE_UNKNOWN";
+    String UNKNOWN = "UNKNOWN";
+  }
+}