New manual time zone picker.
This implements a new manual time zone picker that allows selection of a time zone for a selected country. It also allows selecting a fixed offset time zone (most importantly Etc/UTC, which is a frequently requested feature). The new time zone picker is currently behind a feature flag (settings_zone_picker_v2), which is disabled by default. Test: manual Test: SettingsFunctionalTests Test: SettingsRobotTests Bug: 62255208 Change-Id: I89c5a04bcb562b6facf5f31a8aa4ad1cdd51ab10
This commit is contained in:
Joachim Sauer
208
src/com/android/settings/datetime/timezone/TimeZoneAdapter.java
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208
src/com/android/settings/datetime/timezone/TimeZoneAdapter.java
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/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.datetime.timezone;
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import android.content.Context;
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import android.graphics.Typeface;
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import android.icu.impl.OlsonTimeZone;
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import android.icu.text.DateFormat;
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import android.icu.text.DisplayContext;
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import android.icu.text.SimpleDateFormat;
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import android.icu.util.Calendar;
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import android.icu.util.TimeZone;
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import android.icu.util.TimeZoneTransition;
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import android.support.annotation.NonNull;
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import android.support.v7.widget.RecyclerView;
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import android.text.TextUtils;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import com.android.settings.R;
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import java.util.Collections;
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import java.util.Date;
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import java.util.List;
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/**
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* Adapter for showing {@link TimeZoneInfo} objects in a recycler view.
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*/
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class TimeZoneAdapter extends RecyclerView.Adapter {
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static final int VIEW_TYPE_NORMAL = 1;
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static final int VIEW_TYPE_SELECTED = 2;
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private final DateFormat mTimeFormat;
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private final DateFormat mDateFormat;
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private final View.OnClickListener mOnClickListener;
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private final Context mContext;
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private final String mCurrentTimeZone;
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private List<TimeZoneInfo> mTimeZoneInfos;
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TimeZoneAdapter(View.OnClickListener onClickListener, Context context) {
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mOnClickListener = onClickListener;
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mContext = context;
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mTimeFormat = DateFormat.getTimeInstance(SimpleDateFormat.SHORT);
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mDateFormat = DateFormat.getDateInstance(SimpleDateFormat.MEDIUM);
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mDateFormat.setContext(DisplayContext.CAPITALIZATION_NONE);
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mCurrentTimeZone = TimeZone.getDefault().getID();
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setHasStableIds(true);
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}
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@Override
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public long getItemId(int position) {
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return getItem(position).getItemId();
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}
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@NonNull
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@Override
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public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
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final View view = LayoutInflater.from(parent.getContext())
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.inflate(R.layout.time_zone_list_item, parent, false);
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view.setOnClickListener(mOnClickListener);
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final ViewHolder viewHolder = new ViewHolder(view);
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if (viewType == VIEW_TYPE_SELECTED) {
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viewHolder.mNameView.setTypeface(
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viewHolder.mNameView.getTypeface(), Typeface.BOLD);
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}
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return viewHolder;
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}
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@Override
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public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
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final TimeZoneInfo item = getItem(position);
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final ViewHolder tzHolder = (ViewHolder) holder;
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tzHolder.mNameView.setText(formatName(item));
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tzHolder.mDetailsView.setText(formatDetails(item));
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tzHolder.mTimeView.setText(formatTime(item));
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String dstText = formatDstText(item);
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tzHolder.mDstView.setText(dstText);
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// Hide DST TextView when it has no content.
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tzHolder.mDstView.setVisibility(dstText != null ? View.VISIBLE : View.GONE);
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}
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@Override
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public int getItemCount() {
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return getTimeZones().size();
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}
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@Override
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public int getItemViewType(int position) {
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final TimeZoneInfo tz = getItem(position);
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if (tz.getId().equals(mCurrentTimeZone)) {
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return VIEW_TYPE_SELECTED;
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} else {
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return VIEW_TYPE_NORMAL;
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}
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}
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public TimeZoneInfo getItem(int position) {
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return getTimeZones().get(position);
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}
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private CharSequence formatName(TimeZoneInfo item) {
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CharSequence name = item.getExemplarLocation();
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if (name == null) {
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name = item.getGenericName();
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}
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if (name == null && item.getTimeZone().inDaylightTime(new Date())) {
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name = item.getDaylightName();
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}
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if (name == null) {
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name = item.getStandardName();
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}
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if (name == null) {
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name = item.getGmtOffset();
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}
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return name;
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}
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private CharSequence formatDetails(TimeZoneInfo item) {
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String name = item.getGenericName();
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if (name == null) {
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if (item.getTimeZone().inDaylightTime(new Date())) {
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name = item.getDaylightName();
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} else {
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name = item.getStandardName();
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}
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}
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if (name == null) {
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return item.getGmtOffset();
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} else {
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return TextUtils.concat(item.getGmtOffset(), " ", name);
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}
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}
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private String formatDstText(TimeZoneInfo item) {
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final TimeZone timeZone = item.getTimeZone();
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if (!timeZone.observesDaylightTime()) {
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return null;
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}
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final TimeZoneTransition nextDstTransition = findNextDstTransition(timeZone);
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if (nextDstTransition == null) {
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return null;
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}
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final boolean toDst = nextDstTransition.getTo().getDSTSavings() != 0;
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String timeType = toDst ? item.getDaylightName() : item.getStandardName();
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if (timeType == null) {
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// Fall back to generic "summer time" and "standard time" if the time zone has no
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// specific names.
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timeType = toDst ?
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mContext.getString(R.string.zone_time_type_dst) :
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mContext.getString(R.string.zone_time_type_standard);
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}
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final Calendar transitionTime = Calendar.getInstance(timeZone);
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transitionTime.setTimeInMillis(nextDstTransition.getTime());
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final String date = mDateFormat.format(transitionTime);
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return mContext.getString(R.string.zone_change_to_from_dst, timeType, date);
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}
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private TimeZoneTransition findNextDstTransition(TimeZone timeZone) {
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if (!(timeZone instanceof OlsonTimeZone)) {
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return null;
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}
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final OlsonTimeZone olsonTimeZone = (OlsonTimeZone) timeZone;
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TimeZoneTransition transition = olsonTimeZone.getNextTransition(
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System.currentTimeMillis(), /* inclusive */ false);
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do {
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if (transition.getTo().getDSTSavings() != transition.getFrom().getDSTSavings()) {
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break;
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}
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transition = olsonTimeZone.getNextTransition(
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transition.getTime(), /*inclusive */ false);
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} while (transition != null);
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return transition;
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}
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private String formatTime(TimeZoneInfo item) {
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return mTimeFormat.format(Calendar.getInstance(item.getTimeZone()));
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}
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private List<TimeZoneInfo> getTimeZones() {
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if (mTimeZoneInfos == null) {
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return Collections.emptyList();
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}
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return mTimeZoneInfos;
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}
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void setTimeZoneInfos(List<TimeZoneInfo> timeZoneInfos) {
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mTimeZoneInfos = timeZoneInfos;
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notifyDataSetChanged();
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}
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}
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