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* <tr> * <tr> * <tr> * <tr> * <tr>CONNECTED * <tr> * <tr> * <tr> * <tr> * </table> */ public enum State { CONNECTING, CONNECTED, SUSPENDED, DISCONNECTING, DISCONNECTED, UNKNOWN } /** * The fine-grained state of a network connection. This level of detail * is probably of interest to few applications. Most should use * {@link android.net.NetworkInfo.State State} instead. */ public enum DetailedState { /** Ready to start data connection setup. */ IDLE, /** Searching for an available access point. */ SCANNING, /** Currently setting up data connection. */ CONNECTING, /** Network link established, performing authentication. */ AUTHENTICATING, /** Awaiting response from DHCP server in order to assign IP address information. */ OBTAINING_IPADDR, /** IP traffic should be available. */ CONNECTED, /** IP traffic is suspended */ SUSPENDED, /** Currently tearing down data connection. */ DISCONNECTING, /** IP traffic not available. */ DISCONNECTED, /** Attempt to connect failed. */ FAILED } /** * This is the map described in the Javadoc comment above. The positions * of the elements of the array must correspond to the ordinal values * of <code>DetailedState. */ private static final EnumMap<DetailedState, State> stateMap = new EnumMap<DetailedState, State>(DetailedState.class); static { stateMap.put(DetailedState.IDLE, State.DISCONNECTED); stateMap.put(DetailedState.SCANNING, State.DISCONNECTED); stateMap.put(DetailedState.CONNECTING, State.CONNECTING); stateMap.put(DetailedState.AUTHENTICATING, State.CONNECTING); stateMap.put(DetailedState.OBTAINING_IPADDR, State.CONNECTING); stateMap.put(DetailedState.CONNECTED, State.CONNECTED); stateMap.put(DetailedState.SUSPENDED, State.SUSPENDED); stateMap.put(DetailedState.DISCONNECTING, State.DISCONNECTING); stateMap.put(DetailedState.DISCONNECTED, State.DISCONNECTED); stateMap.put(DetailedState.FAILED, State.DISCONNECTED); } private int mNetworkType; private int mSubtype; private String mTypeName; private String mSubtypeName; private State mState; private DetailedState mDetailedState; private String mReason; private String mExtraInfo; private boolean mIsFailover; private boolean mIsRoaming; /** * Indicates whether network connectivity is possible: */ private boolean mIsAvailable; /** * @param type network type * @deprecated * @hide because this constructor was only meant for internal use (and * has now been superseded by the package-private constructor below). */ public NetworkInfo(int type) {} NetworkInfo(int type, int subtype, String typeName, String subtypeName) { if (!ConnectivityManager.isNetworkTypeValid(type)) { throw new IllegalArgumentException("Invalid network type: " + type); } mNetworkType = type; mSubtype = subtype; mTypeName = typeName; mSubtypeName = subtypeName; setDetailedState(DetailedState.IDLE, null, null); mState = State.UNKNOWN; mIsAvailable = false; // until we're told otherwise, assume unavailable mIsRoaming = false; } /** * Reports the type of network (currently mobile or Wi-Fi) to which the * info in this object pertains. * @return the network type */ public int getType() { return mNetworkType; } /** * Return a network-type-specific integer describing the subtype * of the network. * @return the network subtype */ public int getSubtype() { return mSubtype; } void setSubtype(int subtype, String subtypeName) { mSubtype = subtype; mSubtypeName = subtypeName; } /** * Return a human-readable name describe the type of the network, * for example "WIFI" or "MOBILE". * @return the name of the network type */ public String getTypeName() { return mTypeName; } /** * Return a human-readable name describing the subtype of the network. * @return the name of the network subtype */ public String getSubtypeName() { return mSubtypeName; } /** * Indicates whether network connectivity exists or is in the process * of being established. This is good for applications that need to * do anything related to the network other than read or write data. * For the latter, call {@link #isConnected()} instead, which guarantees * that the network is fully usable. * @return {@code true} if network connectivity exists or is in the process * of being established, {@code false} otherwise. */ public boolean isConnectedOrConnecting() { return mState == State.CONNECTED || mState == State.CONNECTING; } /** * Indicates whether network connectivity exists and it is possible to establish * connections and pass data. * @return {@code true} if network connectivity exists, {@code false} otherwise. */ public boolean isConnected() { return mState == State.CONNECTED; } /** * Indicates whether network connectivity is possible. A network is unavailable * when a persistent or semi-persistent condition prevents the possibility * of connecting to that network. Examples include * <ul> * <li>The device is out of the coverage area for any network of this type. * <li>The device is on a network other than the home network (i.e., roaming), and * data roaming has been disabled.</li> * <li>The device's radio is turned off, e.g., because airplane mode is enabled. * </ul> * @return {@code true} if the network is available, {@code false} otherwise */ public boolean isAvailable() { return mIsAvailable; } /** * Sets if the network is available, ie, if the connectivity is possible. * @param isAvailable the new availability value. * * @hide */ public void setIsAvailable(boolean isAvailable) { mIsAvailable = isAvailable; } /** * Indicates whether the current attempt to connect to the network * resulted from the ConnectivityManager trying to fail over to this * network following a disconnect from another network. * @return {@code true} if this is a failover attempt, {@code false} * otherwise. */ public boolean isFailover() { return mIsFailover; } /** * Set the failover boolean. * @param isFailover {@code true} to mark the current connection attempt * as a failover. * @hide */ public void setFailover(boolean isFailover) { mIsFailover = isFailover; } /** * Indicates whether the device is currently roaming on this network. * When {@code true}, it suggests that use of data on this network * may incur extra costs. * @return {@code true} if roaming is in effect, {@code false} otherwise. */ public boolean isRoaming() { return mIsRoaming; } void setRoaming(boolean isRoaming) { mIsRoaming = isRoaming; } /** * Reports the current coarse-grained state of the network. * @return the coarse-grained state */ public State getState() { return mState; } /** * Reports the current fine-grained state of the network. * @return the fine-grained state */ public DetailedState getDetailedState() { return mDetailedState; } /** * Sets the fine-grained state of the network. * @param detailedState the {@link DetailedState}. * @param reason a {@code String} indicating the reason for the state change, * if one was supplied. May be {@code null}. * @param extraInfo an optional {@code String} providing addditional network state * information passed up from the lower networking layers. */ void setDetailedState(DetailedState detailedState, String reason, String extraInfo) { this.mDetailedState = detailedState; this.mState = stateMap.get(detailedState); this.mReason = reason; this.mExtraInfo = extraInfo; } /** * Report the reason an attempt to establish connectivity failed, * if one is available. * @return the reason for failure, or null if not available */ public String getReason() { return mReason; } /** * Report the extra information about the network state, if any was * provided by the lower networking layers., * if one is available. * @return the extra information, or null if not available */ public String getExtraInfo() { return mExtraInfo; } @Override public String toString() { StringBuilder builder = new StringBuilder("NetworkInfo: "); builder.append("type: ").append(getTypeName()).append("[").append(getSubtypeName()). append("], state: ").append(mState).append("/").append(mDetailedState). append(", reason: ").append(mReason == null ? "(unspecified)" : mReason). append(", extra: ").append(mExtraInfo == null ? "(none)" : mExtraInfo). append(", roaming: ").append(mIsRoaming). append(", failover: ").append(mIsFailover). append(", isAvailable: ").append(mIsAvailable); return builder.toString(); } /** * Implement the Parcelable interface * @hide */ public int describeContents() { return 0; } /** * Implement the Parcelable interface. * @hide */ public void writeToParcel(Parcel dest, int flags) { dest.writeInt(mNetworkType); dest.writeInt(mSubtype); dest.writeString(mTypeName); dest.writeString(mSubtypeName); dest.writeString(mState.name()); dest.writeString(mDetailedState.name()); dest.writeInt(mIsFailover ? 1 : 0); dest.writeInt(mIsAvailable ? 1 : 0); dest.writeInt(mIsRoaming ? 1 : 0); dest.writeString(mReason); dest.writeString(mExtraInfo); } /** * Implement the Parcelable interface. * @hide */ public static final Creator<NetworkInfo> CREATOR = new Creator<NetworkInfo>() { public NetworkInfo createFromParcel(Parcel in) { int netType = in.readInt(); int subtype = in.readInt(); String typeName = in.readString(); String subtypeName = in.readString(); NetworkInfo netInfo = new NetworkInfo(netType, subtype, typeName, subtypeName); netInfo.mState = State.valueOf(in.readString()); netInfo.mDetailedState = DetailedState.valueOf(in.readString()); netInfo.mIsFailover = in.readInt() != 0; netInfo.mIsAvailable = in.readInt() != 0; netInfo.mIsRoaming = in.readInt() != 0; netInfo.mReason = in.readString(); netInfo.mExtraInfo = in.readString(); return netInfo; } public NetworkInfo[] newArray(int size) { return new NetworkInfo[size]; } }; }

Other Android examples (source code examples)

Here is a short list of links related to this Android NetworkInfo.java source code file:

Android example source code file (NetworkInfo.java)

This example Android source code file (NetworkInfo.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, connecting, creator, detailedstate, disconnected, disconnecting, enummap, networkinfo, obtaining_ipaddr, os, override, parcelable, state, string, stringbuilder, suspended, util

The NetworkInfo.java Android example source code

/*
 * Copyright (C) 2008 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 android.net;

import android.os.Parcelable;
import android.os.Parcel;

import java.util.EnumMap;

/**
 * Describes the status of a network interface of a given type
 * (currently either Mobile or Wifi).
 */
public class NetworkInfo implements Parcelable {

    /**
     * Coarse-grained network state. This is probably what most applications should
     * use, rather than {@link android.net.NetworkInfo.DetailedState DetailedState}.
     * The mapping between the two is as follows:
     * <br/>
* <table> * <tr>
Detailed stateCoarse-grained state
IDLEDISCONNECTED
SCANNINGCONNECTING
CONNECTINGCONNECTING
AUTHENTICATINGCONNECTING
CONNECTED
DISCONNECTINGDISCONNECTING
DISCONNECTEDDISCONNECTED
UNAVAILABLEDISCONNECTED
FAILEDDISCONNECTED


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