Java tutorial
/* * Copyright (C) 2009 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.accounts; import android.annotation.UnsupportedAppUsage; import android.os.Build; import android.os.Parcelable; import android.os.Parcel; /** * A {@link Parcelable} value type that contains information about an account authenticator. */ public class AuthenticatorDescription implements Parcelable { /** The string that uniquely identifies an authenticator */ final public String type; /** A resource id of a label for the authenticator that is suitable for displaying */ final public int labelId; /** A resource id of a icon for the authenticator */ final public int iconId; /** A resource id of a smaller icon for the authenticator */ final public int smallIconId; /** * A resource id for a hierarchy of PreferenceScreen to be added to the settings page for the * account. See {@link AbstractAccountAuthenticator} for an example. */ final public int accountPreferencesId; /** The package name that can be used to lookup the resources from above. */ final public String packageName; /** Authenticator handles its own token caching and permission screen */ final public boolean customTokens; /** A constructor for a full AuthenticatorDescription */ public AuthenticatorDescription(String type, String packageName, int labelId, int iconId, int smallIconId, int prefId, boolean customTokens) { if (type == null) throw new IllegalArgumentException("type cannot be null"); if (packageName == null) throw new IllegalArgumentException("packageName cannot be null"); this.type = type; this.packageName = packageName; this.labelId = labelId; this.iconId = iconId; this.smallIconId = smallIconId; this.accountPreferencesId = prefId; this.customTokens = customTokens; } public AuthenticatorDescription(String type, String packageName, int labelId, int iconId, int smallIconId, int prefId) { this(type, packageName, labelId, iconId, smallIconId, prefId, false); } /** * A factory method for creating an AuthenticatorDescription that can be used as a key * to identify the authenticator by its type. */ public static AuthenticatorDescription newKey(String type) { if (type == null) throw new IllegalArgumentException("type cannot be null"); return new AuthenticatorDescription(type); } @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) private AuthenticatorDescription(String type) { this.type = type; this.packageName = null; this.labelId = 0; this.iconId = 0; this.smallIconId = 0; this.accountPreferencesId = 0; this.customTokens = false; } @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) private AuthenticatorDescription(Parcel source) { this.type = source.readString(); this.packageName = source.readString(); this.labelId = source.readInt(); this.iconId = source.readInt(); this.smallIconId = source.readInt(); this.accountPreferencesId = source.readInt(); this.customTokens = source.readByte() == 1; } /** @inheritDoc */ public int describeContents() { return 0; } /** Returns the hashcode of the type only. */ public int hashCode() { return type.hashCode(); } /** Compares the type only, suitable for key comparisons. */ public boolean equals(Object o) { if (o == this) return true; if (!(o instanceof AuthenticatorDescription)) return false; final AuthenticatorDescription other = (AuthenticatorDescription) o; return type.equals(other.type); } public String toString() { return "AuthenticatorDescription {type=" + type + "}"; } /** @inheritDoc */ public void writeToParcel(Parcel dest, int flags) { dest.writeString(type); dest.writeString(packageName); dest.writeInt(labelId); dest.writeInt(iconId); dest.writeInt(smallIconId); dest.writeInt(accountPreferencesId); dest.writeByte((byte) (customTokens ? 1 : 0)); } /** Used to create the object from a parcel. */ public static final Creator<AuthenticatorDescription> CREATOR = new Creator<AuthenticatorDescription>() { /** @inheritDoc */ public AuthenticatorDescription createFromParcel(Parcel source) { return new AuthenticatorDescription(source); } /** @inheritDoc */ public AuthenticatorDescription[] newArray(int size) { return new AuthenticatorDescription[size]; } }; }