2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 import android.os.Parcelable;
20 import android.os.Parcel;
22 import com.android.internal.annotations.VisibleForTesting;
24 import java.util.EnumMap;
27 * Describes the status of a network interface.
28 * <p>Use {@link ConnectivityManager#getActiveNetworkInfo()} to get an instance that represents
29 * the current network connection.
31 public class NetworkInfo implements Parcelable {
34 * Coarse-grained network state. This is probably what most applications should
35 * use, rather than {@link android.net.NetworkInfo.DetailedState DetailedState}.
36 * The mapping between the two is as follows:
39 * <tr><td><b>Detailed state</b></td><td><b>Coarse-grained state</b></td></tr>
40 * <tr><td><code>IDLE</code></td><td><code>DISCONNECTED</code></td></tr>
41 * <tr><td><code>SCANNING</code></td><td><code>CONNECTING</code></td></tr>
42 * <tr><td><code>CONNECTING</code></td><td><code>CONNECTING</code></td></tr>
43 * <tr><td><code>AUTHENTICATING</code></td><td><code>CONNECTING</code></td></tr>
44 * <tr><td><code>CONNECTED</code></td><td><code>CONNECTED</code></td></tr>
45 * <tr><td><code>DISCONNECTING</code></td><td><code>DISCONNECTING</code></td></tr>
46 * <tr><td><code>DISCONNECTED</code></td><td><code>DISCONNECTED</code></td></tr>
47 * <tr><td><code>UNAVAILABLE</code></td><td><code>DISCONNECTED</code></td></tr>
48 * <tr><td><code>FAILED</code></td><td><code>DISCONNECTED</code></td></tr>
52 CONNECTING, CONNECTED, SUSPENDED, DISCONNECTING, DISCONNECTED, UNKNOWN
56 * The fine-grained state of a network connection. This level of detail
57 * is probably of interest to few applications. Most should use
58 * {@link android.net.NetworkInfo.State State} instead.
60 public enum DetailedState {
61 /** Ready to start data connection setup. */
63 /** Searching for an available access point. */
65 /** Currently setting up data connection. */
67 /** Network link established, performing authentication. */
69 /** Awaiting response from DHCP server in order to assign IP address information. */
71 /** IP traffic should be available. */
73 /** IP traffic is suspended */
75 /** Currently tearing down data connection. */
77 /** IP traffic not available. */
79 /** Attempt to connect failed. */
81 /** Access to this network is blocked. */
83 /** Link has poor connectivity. */
85 /** Checking if network is a captive portal */
90 * This is the map described in the Javadoc comment above. The positions
91 * of the elements of the array must correspond to the ordinal values
92 * of <code>DetailedState</code>.
94 private static final EnumMap<DetailedState, State> stateMap =
95 new EnumMap<DetailedState, State>(DetailedState.class);
98 stateMap.put(DetailedState.IDLE, State.DISCONNECTED);
99 stateMap.put(DetailedState.SCANNING, State.DISCONNECTED);
100 stateMap.put(DetailedState.CONNECTING, State.CONNECTING);
101 stateMap.put(DetailedState.AUTHENTICATING, State.CONNECTING);
102 stateMap.put(DetailedState.OBTAINING_IPADDR, State.CONNECTING);
103 stateMap.put(DetailedState.VERIFYING_POOR_LINK, State.CONNECTING);
104 stateMap.put(DetailedState.CAPTIVE_PORTAL_CHECK, State.CONNECTING);
105 stateMap.put(DetailedState.CONNECTED, State.CONNECTED);
106 stateMap.put(DetailedState.SUSPENDED, State.SUSPENDED);
107 stateMap.put(DetailedState.DISCONNECTING, State.DISCONNECTING);
108 stateMap.put(DetailedState.DISCONNECTED, State.DISCONNECTED);
109 stateMap.put(DetailedState.FAILED, State.DISCONNECTED);
110 stateMap.put(DetailedState.BLOCKED, State.DISCONNECTED);
113 private int mNetworkType;
114 private int mSubtype;
115 private String mTypeName;
116 private String mSubtypeName;
117 private State mState;
118 private DetailedState mDetailedState;
119 private String mReason;
120 private String mExtraInfo;
121 private boolean mIsFailover;
122 private boolean mIsRoaming;
125 * Indicates whether network connectivity is possible:
127 private boolean mIsAvailable;
132 public NetworkInfo(int type, int subtype, String typeName, String subtypeName) {
133 if (!ConnectivityManager.isNetworkTypeValid(type)) {
134 throw new IllegalArgumentException("Invalid network type: " + type);
138 mTypeName = typeName;
139 mSubtypeName = subtypeName;
140 setDetailedState(DetailedState.IDLE, null, null);
141 mState = State.UNKNOWN;
142 mIsAvailable = false; // until we're told otherwise, assume unavailable
147 public NetworkInfo(NetworkInfo source) {
148 if (source != null) {
149 synchronized (source) {
150 mNetworkType = source.mNetworkType;
151 mSubtype = source.mSubtype;
152 mTypeName = source.mTypeName;
153 mSubtypeName = source.mSubtypeName;
154 mState = source.mState;
155 mDetailedState = source.mDetailedState;
156 mReason = source.mReason;
157 mExtraInfo = source.mExtraInfo;
158 mIsFailover = source.mIsFailover;
159 mIsRoaming = source.mIsRoaming;
160 mIsAvailable = source.mIsAvailable;
166 * Reports the type of network to which the
167 * info in this {@code NetworkInfo} pertains.
168 * @return one of {@link ConnectivityManager#TYPE_MOBILE}, {@link
169 * ConnectivityManager#TYPE_WIFI}, {@link ConnectivityManager#TYPE_WIMAX}, {@link
170 * ConnectivityManager#TYPE_ETHERNET}, {@link ConnectivityManager#TYPE_BLUETOOTH}, or other
171 * types defined by {@link ConnectivityManager}
173 public int getType() {
174 synchronized (this) {
182 public void setType(int type) {
183 synchronized (this) {
189 * Return a network-type-specific integer describing the subtype
191 * @return the network subtype
193 public int getSubtype() {
194 synchronized (this) {
202 public void setSubtype(int subtype, String subtypeName) {
203 synchronized (this) {
205 mSubtypeName = subtypeName;
210 * Return a human-readable name describe the type of the network,
211 * for example "WIFI" or "MOBILE".
212 * @return the name of the network type
214 public String getTypeName() {
215 synchronized (this) {
221 * Return a human-readable name describing the subtype of the network.
222 * @return the name of the network subtype
224 public String getSubtypeName() {
225 synchronized (this) {
231 * Indicates whether network connectivity exists or is in the process
232 * of being established. This is good for applications that need to
233 * do anything related to the network other than read or write data.
234 * For the latter, call {@link #isConnected()} instead, which guarantees
235 * that the network is fully usable.
236 * @return {@code true} if network connectivity exists or is in the process
237 * of being established, {@code false} otherwise.
239 public boolean isConnectedOrConnecting() {
240 synchronized (this) {
241 return mState == State.CONNECTED || mState == State.CONNECTING;
246 * Indicates whether network connectivity exists and it is possible to establish
247 * connections and pass data.
248 * <p>Always call this before attempting to perform data transactions.
249 * @return {@code true} if network connectivity exists, {@code false} otherwise.
251 public boolean isConnected() {
252 synchronized (this) {
253 return mState == State.CONNECTED;
258 * Indicates whether network connectivity is possible. A network is unavailable
259 * when a persistent or semi-persistent condition prevents the possibility
260 * of connecting to that network. Examples include
262 * <li>The device is out of the coverage area for any network of this type.</li>
263 * <li>The device is on a network other than the home network (i.e., roaming), and
264 * data roaming has been disabled.</li>
265 * <li>The device's radio is turned off, e.g., because airplane mode is enabled.</li>
267 * @return {@code true} if the network is available, {@code false} otherwise
269 public boolean isAvailable() {
270 synchronized (this) {
276 * Sets if the network is available, ie, if the connectivity is possible.
277 * @param isAvailable the new availability value.
281 public void setIsAvailable(boolean isAvailable) {
282 synchronized (this) {
283 mIsAvailable = isAvailable;
288 * Indicates whether the current attempt to connect to the network
289 * resulted from the ConnectivityManager trying to fail over to this
290 * network following a disconnect from another network.
291 * @return {@code true} if this is a failover attempt, {@code false}
294 public boolean isFailover() {
295 synchronized (this) {
301 * Set the failover boolean.
302 * @param isFailover {@code true} to mark the current connection attempt
306 public void setFailover(boolean isFailover) {
307 synchronized (this) {
308 mIsFailover = isFailover;
313 * Indicates whether the device is currently roaming on this network.
314 * When {@code true}, it suggests that use of data on this network
315 * may incur extra costs.
316 * @return {@code true} if roaming is in effect, {@code false} otherwise.
318 public boolean isRoaming() {
319 synchronized (this) {
326 public void setRoaming(boolean isRoaming) {
327 synchronized (this) {
328 mIsRoaming = isRoaming;
333 * Reports the current coarse-grained state of the network.
334 * @return the coarse-grained state
336 public State getState() {
337 synchronized (this) {
343 * Reports the current fine-grained state of the network.
344 * @return the fine-grained state
346 public DetailedState getDetailedState() {
347 synchronized (this) {
348 return mDetailedState;
353 * Sets the fine-grained state of the network.
354 * @param detailedState the {@link DetailedState}.
355 * @param reason a {@code String} indicating the reason for the state change,
356 * if one was supplied. May be {@code null}.
357 * @param extraInfo an optional {@code String} providing addditional network state
358 * information passed up from the lower networking layers.
361 public void setDetailedState(DetailedState detailedState, String reason, String extraInfo) {
362 synchronized (this) {
363 this.mDetailedState = detailedState;
364 this.mState = stateMap.get(detailedState);
365 this.mReason = reason;
366 this.mExtraInfo = extraInfo;
371 * Set the extraInfo field.
372 * @param extraInfo an optional {@code String} providing addditional network state
373 * information passed up from the lower networking layers.
376 public void setExtraInfo(String extraInfo) {
377 synchronized (this) {
378 this.mExtraInfo = extraInfo;
383 * Report the reason an attempt to establish connectivity failed,
384 * if one is available.
385 * @return the reason for failure, or null if not available
387 public String getReason() {
388 synchronized (this) {
394 * Report the extra information about the network state, if any was
395 * provided by the lower networking layers.
396 * @return the extra information, or null if not available
398 public String getExtraInfo() {
399 synchronized (this) {
405 public String toString() {
406 synchronized (this) {
407 StringBuilder builder = new StringBuilder("[");
408 builder.append("type: ").append(getTypeName()).append("[").append(getSubtypeName()).
409 append("], state: ").append(mState).append("/").append(mDetailedState).
410 append(", reason: ").append(mReason == null ? "(unspecified)" : mReason).
411 append(", extra: ").append(mExtraInfo == null ? "(none)" : mExtraInfo).
412 append(", roaming: ").append(mIsRoaming).
413 append(", failover: ").append(mIsFailover).
414 append(", isAvailable: ").append(mIsAvailable).
416 return builder.toString();
421 * Implement the Parcelable interface
424 public int describeContents() {
429 * Implement the Parcelable interface.
432 public void writeToParcel(Parcel dest, int flags) {
433 synchronized (this) {
434 dest.writeInt(mNetworkType);
435 dest.writeInt(mSubtype);
436 dest.writeString(mTypeName);
437 dest.writeString(mSubtypeName);
438 dest.writeString(mState.name());
439 dest.writeString(mDetailedState.name());
440 dest.writeInt(mIsFailover ? 1 : 0);
441 dest.writeInt(mIsAvailable ? 1 : 0);
442 dest.writeInt(mIsRoaming ? 1 : 0);
443 dest.writeString(mReason);
444 dest.writeString(mExtraInfo);
449 * Implement the Parcelable interface.
452 public static final Creator<NetworkInfo> CREATOR =
453 new Creator<NetworkInfo>() {
454 public NetworkInfo createFromParcel(Parcel in) {
455 int netType = in.readInt();
456 int subtype = in.readInt();
457 String typeName = in.readString();
458 String subtypeName = in.readString();
459 NetworkInfo netInfo = new NetworkInfo(netType, subtype, typeName, subtypeName);
460 netInfo.mState = State.valueOf(in.readString());
461 netInfo.mDetailedState = DetailedState.valueOf(in.readString());
462 netInfo.mIsFailover = in.readInt() != 0;
463 netInfo.mIsAvailable = in.readInt() != 0;
464 netInfo.mIsRoaming = in.readInt() != 0;
465 netInfo.mReason = in.readString();
466 netInfo.mExtraInfo = in.readString();
470 public NetworkInfo[] newArray(int size) {
471 return new NetworkInfo[size];