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/*
* Copyright (C) 2014 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.telephony;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.SystemApi;
import android.annotation.TestApi;
import android.compat.Compatibility;
import android.compat.annotation.ChangeId;
import android.compat.annotation.EnabledAfter;
import android.compat.annotation.UnsupportedAppUsage;
import android.net.LinkProperties;
import android.os.Build;
import android.os.Parcel;
import android.os.Parcelable;
import android.telephony.Annotation.ApnType;
import android.telephony.Annotation.DataFailureCause;
import android.telephony.Annotation.DataState;
import android.telephony.Annotation.NetworkType;
import android.telephony.data.ApnSetting;
import java.util.Objects;
/**
* Contains precise data connection state.
*
* The following data connection information is included in returned PreciseDataConnectionState:
*
* <ul>
* <li>Data connection state.
* <li>Network type of the connection.
* <li>APN types.
* <li>APN.
* <li>The properties of the network link.
* <li>Data connection fail cause.
* </ul>
*
*/
public final class PreciseDataConnectionState implements Parcelable {
private final @DataState int mState;
private final @NetworkType int mNetworkType;
private final @DataFailureCause int mFailCause;
private final LinkProperties mLinkProperties;
private final ApnSetting mApnSetting;
/**
* Constructor
*
* @deprecated this constructor has been superseded and should not be used.
* @hide
*/
@TestApi
@Deprecated
@UnsupportedAppUsage // (maxTargetSdk = Build.VERSION_CODES.Q)
// FIXME: figure out how to remove the UnsupportedAppUsage and delete this constructor
public PreciseDataConnectionState(@DataState int state,
@NetworkType int networkType,
@ApnType int apnTypes, @NonNull String apn,
@Nullable LinkProperties linkProperties,
@DataFailureCause int failCause) {
this(state, networkType, linkProperties, failCause, new ApnSetting.Builder()
.setApnTypeBitmask(apnTypes)
.setApnName(apn)
.build());
}
/**
* Constructor of PreciseDataConnectionState
*
* @param state The state of the data connection
* @param networkType The access network that is/would carry this data connection
* @param linkProperties If the data connection is connected, the properties of the connection
* @param failCause In case a procedure related to this data connection fails, a non-zero error
* code indicating the cause of the failure.
* @param apnSetting If there is a valid APN for this Data Connection, then the APN Settings;
* if there is no valid APN setting for the specific type, then this will be null
*/
private PreciseDataConnectionState(@DataState int state,
@NetworkType int networkType,
@Nullable LinkProperties linkProperties,
@DataFailureCause int failCause,
@Nullable ApnSetting apnSetting) {
mState = state;
mNetworkType = networkType;
mLinkProperties = linkProperties;
mFailCause = failCause;
mApnSetting = apnSetting;
}
/**
* Construct a PreciseDataConnectionState object from the given parcel.
*
* @hide
*/
private PreciseDataConnectionState(Parcel in) {
mState = in.readInt();
mNetworkType = in.readInt();
mLinkProperties = in.readParcelable(LinkProperties.class.getClassLoader());
mFailCause = in.readInt();
mApnSetting = in.readParcelable(ApnSetting.class.getClassLoader());
}
/**
* Used for checking if the SDK version for
* {@code PreciseDataConnectionState#getDataConnectionState} is above Q.
*/
@ChangeId
@EnabledAfter(targetSdkVersion = Build.VERSION_CODES.Q)
private static final long GET_DATA_CONNECTION_STATE_R_VERSION = 148535736L;
/**
* Returns the state of data connection that supported the apn types returned by
* {@link #getDataConnectionApnTypeBitMask()}
*
* @deprecated use {@link #getState()}
* @hide
*/
@Deprecated
@SystemApi
public @DataState int getDataConnectionState() {
if (mState == TelephonyManager.DATA_DISCONNECTING
&& !Compatibility.isChangeEnabled(GET_DATA_CONNECTION_STATE_R_VERSION)) {
return TelephonyManager.DATA_CONNECTED;
}
return mState;
}
/**
* Returns the high-level state of this data connection.
*/
public @DataState int getState() {
return mState;
}
/**
* Get the network type associated with this data connection.
*
* @return The current/latest (radio) bearer technology that carries this data connection.
* For a variety of reasons, the network type can change during the life of the data
* connection, and this information is not reliable unless the physical link is currently
* active; (there is currently no mechanism to know whether the physical link is active at
* any given moment). Thus, this value is generally correct but may not be relied-upon to
* represent the status of the radio bearer at any given moment.
*/
public @NetworkType int getNetworkType() {
return mNetworkType;
}
/**
* Returns the APN types mapped to this data connection.
*
* @deprecated use {@link #getApnSetting()}
* @hide
*/
@Deprecated
@SystemApi
public @ApnType int getDataConnectionApnTypeBitMask() {
return (mApnSetting != null) ? mApnSetting.getApnTypeBitmask() : ApnSetting.TYPE_NONE;
}
/**
* Returns APN of this data connection.
*
* @deprecated use {@link #getApnSetting()}
* @hide
*/
@NonNull
@SystemApi
@Deprecated
public String getDataConnectionApn() {
return (mApnSetting != null) ? mApnSetting.getApnName() : "";
}
/**
* Get the properties of the network link {@link LinkProperties}.
*/
@Nullable
public LinkProperties getLinkProperties() {
return mLinkProperties;
}
/**
* Returns the cause code generated by the most recent state change.
*
* @deprecated use {@link #getLastCauseCode()}
* @hide
*/
@Deprecated
@SystemApi
public int getDataConnectionFailCause() {
return mFailCause;
}
/**
* Returns the cause code generated by the most recent state change.
*
* Return the cause code for the most recent change in {@link #getState}. In the event of an
* error, this cause code will be non-zero.
*/
public @DataFailureCause int getLastCauseCode() {
return mFailCause;
}
/**
* Return the APN Settings for this data connection.
*
* @return the ApnSetting that was used to configure this data connection.
*/
public @Nullable ApnSetting getApnSetting() {
return mApnSetting;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(@NonNull Parcel out, int flags) {
out.writeInt(mState);
out.writeInt(mNetworkType);
out.writeParcelable(mLinkProperties, flags);
out.writeInt(mFailCause);
out.writeParcelable(mApnSetting, flags);
}
public static final @NonNull Parcelable.Creator<PreciseDataConnectionState> CREATOR
= new Parcelable.Creator<PreciseDataConnectionState>() {
public PreciseDataConnectionState createFromParcel(Parcel in) {
return new PreciseDataConnectionState(in);
}
public PreciseDataConnectionState[] newArray(int size) {
return new PreciseDataConnectionState[size];
}
};
@Override
public int hashCode() {
return Objects.hash(mState, mNetworkType, mFailCause, mLinkProperties, mApnSetting);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PreciseDataConnectionState that = (PreciseDataConnectionState) o;
return mState == that.mState
&& mNetworkType == that.mNetworkType
&& mFailCause == that.mFailCause
&& Objects.equals(mLinkProperties, that.mLinkProperties)
&& Objects.equals(mApnSetting, that.mApnSetting);
}
@NonNull
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("Data Connection state: " + mState);
sb.append(", Network type: " + mNetworkType);
sb.append(", APN types: " + ApnSetting.getApnTypesStringFromBitmask(
getDataConnectionApnTypeBitMask()));
sb.append(", APN: " + getDataConnectionApn());
sb.append(", Link properties: " + mLinkProperties);
sb.append(", Fail cause: " + DataFailCause.toString(mFailCause));
sb.append(", Apn Setting: " + mApnSetting);
return sb.toString();
}
/**
* {@link PreciseDataConnectionState} builder
*
* @hide
*/
public static final class Builder {
/** The state of the data connection */
private @DataState int mState = TelephonyManager.DATA_UNKNOWN;
/** The network type associated with this data connection */
private @NetworkType int mNetworkType = TelephonyManager.NETWORK_TYPE_UNKNOWN;
/** If the data connection is connected, the properties of the connection */
private @Nullable LinkProperties mLinkProperties = null;
/**
* In case a procedure related to this data connection fails, a non-zero error code
* indicating the cause of the failure.
*/
private @DataFailureCause int mFailCause = DataFailCause.NONE;
/** The APN Setting for this data connection */
private @Nullable ApnSetting mApnSetting = null;
/**
* Set the state of the data connection.
*
* @param state The state of the data connection
* @return The builder
*/
public Builder setState(@DataState int state) {
mState = state;
return this;
}
/**
* Set the network type associated with this data connection.
*
* @param networkType The network type
* @return The builder
*/
public Builder setNetworkType(@NetworkType int networkType) {
mNetworkType = networkType;
return this;
}
/**
* Set the link properties of the connection.
*
* @param linkProperties Link properties
* @return The builder
*/
public Builder setLinkProperties(@NonNull LinkProperties linkProperties) {
mLinkProperties = linkProperties;
return this;
}
/**
* Set the fail cause of the data connection.
*
* @param failCause In case a procedure related to this data connection fails, a non-zero
* error code indicating the cause of the failure.
* @return The builder
*/
public Builder setFailCause(@DataFailureCause int failCause) {
mFailCause = failCause;
return this;
}
/**
* Set the APN Setting for this data connection.
*
* @param apnSetting APN setting
* @return This builder
*/
public Builder setApnSetting(@NonNull ApnSetting apnSetting) {
mApnSetting = apnSetting;
return this;
}
/**
* Build the {@link PreciseDataConnectionState} instance.
*
* @return The {@link PreciseDataConnectionState} instance
*/
public PreciseDataConnectionState build() {
return new PreciseDataConnectionState(mState, mNetworkType, mLinkProperties, mFailCause,
mApnSetting);
}
}
}