我从source.android.com 下载了android 4.3 源代码，我找到了DeskClock 应用程序并想编译它，但是我遇到了麻烦...
在 DeskClock.java 中导入 android.support.v13.app.FragmentPagerAdapter 并导入 android.support.v4.view.ViewPager 是不同的 jar 吗？
这是源代码：
/*
* 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 com.android.deskclock;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v13.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.PopupMenu;
import android.widget.TextView;
import com.android.deskclock.stopwatch.StopwatchFragment;
import com.android.deskclock.stopwatch.StopwatchService;
import com.android.deskclock.stopwatch.Stopwatches;
import com.android.deskclock.timer.TimerFragment;
import com.android.deskclock.timer.TimerObj;
import com.android.deskclock.timer.Timers;
import com.android.deskclock.worldclock.CitiesActivity;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Locale;
import java.util.TimeZone;
/**
* DeskClock clock view for desk docks.
*/
public class DeskClock extends Activity implements LabelDialogFragment.TimerLabelDialogHandler {
private static final boolean DEBUG = false;
private static final String LOG_TAG = "DeskClock";
// Alarm action for midnight (so we can update the date display).
private static final String KEY_SELECTED_TAB = "selected_tab";
private static final String KEY_CLOCK_STATE = "clock_state";
public static final String SELECT_TAB_INTENT_EXTRA = "deskclock.select.tab";
private ActionBar mActionBar;
private Tab mTimerTab;
private Tab mClockTab;
private Tab mStopwatchTab;
private ViewPager mViewPager;
private TabsAdapter mTabsAdapter;
public static final int TIMER_TAB_INDEX = 0;
public static final int CLOCK_TAB_INDEX = 1;
public static final int STOPWATCH_TAB_INDEX = 2;
// Tabs indices are switched for right-to-left since there is no
// native support for RTL in the ViewPager.
public static final int RTL_TIMER_TAB_INDEX = 2;
public static final int RTL_CLOCK_TAB_INDEX = 1;
public static final int RTL_STOPWATCH_TAB_INDEX = 0;
private int mSelectedTab;
@Override
public void onNewIntent(Intent newIntent) {
super.onNewIntent(newIntent);
if (DEBUG) Log.d(LOG_TAG, "onNewIntent with intent: " + newIntent);
// update our intent so that we can consult it to determine whether or
// not the most recent launch was via a dock event
setIntent(newIntent);
// Timer receiver may ask to go to the timers fragment if a timer expired.
int tab = newIntent.getIntExtra(SELECT_TAB_INTENT_EXTRA, -1);
if (tab != -1) {
if (mActionBar != null) {
mActionBar.setSelectedNavigationItem(tab);
}
}
}
private void initViews() {
if (mTabsAdapter == null) {
mViewPager = new ViewPager(this);
mViewPager.setId(R.id.desk_clock_pager);
mTabsAdapter = new TabsAdapter(this, mViewPager);
createTabs(mSelectedTab);
}
setContentView(mViewPager);
mActionBar.setSelectedNavigationItem(mSelectedTab);
}
private void createTabs(int selectedIndex) {
mActionBar = getActionBar();
mActionBar.setDisplayOptions(0);
if (mActionBar != null) {
mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mTimerTab = mActionBar.newTab();
mTimerTab.setIcon(R.drawable.timer_tab);
mTimerTab.setContentDescription(R.string.menu_timer);
mTabsAdapter.addTab(mTimerTab, TimerFragment.class,TIMER_TAB_INDEX);
mClockTab = mActionBar.newTab();
mClockTab.setIcon(R.drawable.clock_tab);
mClockTab.setContentDescription(R.string.menu_clock);
mTabsAdapter.addTab(mClockTab, ClockFragment.class,CLOCK_TAB_INDEX);
mStopwatchTab = mActionBar.newTab();
mStopwatchTab.setIcon(R.drawable.stopwatch_tab);
mStopwatchTab.setContentDescription(R.string.menu_stopwatch);
mTabsAdapter.addTab(mStopwatchTab, StopwatchFragment.class,STOPWATCH_TAB_INDEX);
mActionBar.setSelectedNavigationItem(selectedIndex);
mTabsAdapter.notifySelectedPage(selectedIndex);
}
}
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
mSelectedTab = CLOCK_TAB_INDEX;
if (icicle != null) {
mSelectedTab = icicle.getInt(KEY_SELECTED_TAB, CLOCK_TAB_INDEX);
}
// Timer receiver may ask the app to go to the timer fragment if a timer expired
Intent i = getIntent();
if (i != null) {
int tab = i.getIntExtra(SELECT_TAB_INTENT_EXTRA, -1);
if (tab != -1) {
mSelectedTab = tab;
}
}
initViews();
setHomeTimeZone();
}
@Override
protected void onResume() {
super.onResume();
Intent stopwatchIntent = new Intent(getApplicationContext(), StopwatchService.class);
stopwatchIntent.setAction(Stopwatches.KILL_NOTIF);
startService(stopwatchIntent);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = prefs.edit();
editor.putBoolean(Timers.NOTIF_APP_OPEN, true);
editor.apply();
Intent timerIntent = new Intent();
timerIntent.setAction(Timers.NOTIF_IN_USE_CANCEL);
sendBroadcast(timerIntent);
}
@Override
public void onPause() {
Intent intent = new Intent(getApplicationContext(), StopwatchService.class);
intent.setAction(Stopwatches.SHOW_NOTIF);
startService(intent);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = prefs.edit();
editor.putBoolean(Timers.NOTIF_APP_OPEN, false);
editor.apply();
Utils.showInUseNotifications(this);
super.onPause();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(KEY_SELECTED_TAB, mActionBar.getSelectedNavigationIndex());
}
public void clockButtonsOnClick(View v) {
if (v == null)
return;
switch (v.getId()) {
case R.id.alarms_button:
startActivity(new Intent(this, AlarmClock.class));
break;
case R.id.cities_button:
startActivity(new Intent(this, CitiesActivity.class));
break;
case R.id.menu_button:
showMenu(v);
break;
default:
break;
}
}
private void showMenu(View v) {
PopupMenu popupMenu = new PopupMenu(this, v);
popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener () {
@Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_item_settings:
startActivity(new Intent(DeskClock.this, SettingsActivity.class));
return true;
case R.id.menu_item_help:
Intent i = item.getIntent();
if (i != null) {
try {
startActivity(i);
} catch (ActivityNotFoundException e) {
// No activity found to match the intent - ignore
}
}
return true;
case R.id.menu_item_night_mode:
startActivity(new Intent(DeskClock.this, ScreensaverActivity.class));
default:
break;
}
return true;
}
});
popupMenu.inflate(R.menu.desk_clock_menu);
Menu menu = popupMenu.getMenu();
MenuItem help = menu.findItem(R.id.menu_item_help);
if (help != null) {
Utils.prepareHelpMenuItem(this, help);
}
popupMenu.show();
}
/***
* Insert the local time zone as the Home Time Zone if one is not set
*/
private void setHomeTimeZone() {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
String homeTimeZone = prefs.getString(SettingsActivity.KEY_HOME_TZ, "");
if (!homeTimeZone.isEmpty()) {
return;
}
homeTimeZone = TimeZone.getDefault().getID();
SharedPreferences.Editor editor = prefs.edit();
editor.putString(SettingsActivity.KEY_HOME_TZ, homeTimeZone);
editor.apply();
Log.v(LOG_TAG, "Setting home time zone to " + homeTimeZone);
}
public void registerPageChangedListener(DeskClockFragment frag) {
if (mTabsAdapter != null) {
mTabsAdapter.registerPageChangedListener(frag);
}
}
public void unregisterPageChangedListener(DeskClockFragment frag) {
if (mTabsAdapter != null) {
mTabsAdapter.unregisterPageChangedListener(frag);
}
}
/***
* Adapter for wrapping together the ActionBar's tab with the ViewPager
*/
private class TabsAdapter extends FragmentPagerAdapter
implements ActionBar.TabListener, ViewPager.OnPageChangeListener {
private static final String KEY_TAB_POSITION = "tab_position";
final class TabInfo {
private final Class<?> clss;
private final Bundle args;
TabInfo(Class<?> _class, int position) {
clss = _class;
args = new Bundle();
args.putInt(KEY_TAB_POSITION, position);
}
public int getPosition() {
return args.getInt(KEY_TAB_POSITION, 0);
}
}
private final ArrayList<TabInfo> mTabs = new ArrayList <TabInfo>();
ActionBar mMainActionBar;
Context mContext;
ViewPager mPager;
// Used for doing callbacks to fragments.
HashSet<String> mFragmentTags = new HashSet<String>();
public TabsAdapter(Activity activity, ViewPager pager) {
super(activity.getFragmentManager());
mContext = activity;
mMainActionBar = activity.getActionBar();
mPager = pager;
mPager.setAdapter(this);
mPager.setOnPageChangeListener(this);
}
@Override
public Fragment getItem(int position) {
TabInfo info = mTabs.get(getRtlPosition(position));
DeskClockFragment f = (DeskClockFragment) Fragment.instantiate(
mContext, info.clss.getName(), info.args);
return f;
}
@Override
public int getCount() {
return mTabs.size();
}
public void addTab(ActionBar.Tab tab, Class<?> clss, int position) {
TabInfo info = new TabInfo(clss, position);
tab.setTag(info);
tab.setTabListener(this);
mTabs.add(info);
mMainActionBar.addTab(tab);
notifyDataSetChanged();
}
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
// Do nothing
}
@Override
public void onPageSelected(int position) {
mMainActionBar.setSelectedNavigationItem(getRtlPosition(position));
notifyPageChanged(position);
}
@Override
public void onPageScrollStateChanged(int state) {
// Do nothing
}
@Override
public void onTabReselected(Tab arg0, FragmentTransaction arg1) {
// Do nothing
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
TabInfo info = (TabInfo)tab.getTag();
mPager.setCurrentItem(getRtlPosition(info.getPosition()));
}
@Override
public void onTabUnselected(Tab arg0, FragmentTransaction arg1) {
// Do nothing
}
public void notifySelectedPage(int page) {
notifyPageChanged(page);
}
private void notifyPageChanged(int newPage) {
for (String tag : mFragmentTags) {
final FragmentManager fm = getFragmentManager();
DeskClockFragment f = (DeskClockFragment) fm.findFragmentByTag(tag);
if (f != null) {
f.onPageChanged(newPage);
}
}
}
public void registerPageChangedListener(DeskClockFragment frag) {
String tag = frag.getTag();
if (mFragmentTags.contains(tag)) {
Log.wtf(LOG_TAG, "Trying to add an existing fragment " + tag);
} else {
mFragmentTags.add(frag.getTag());
}
// Since registering a listener by the fragment is done sometimes after the page
// was already changed, make sure the fragment gets the current page
frag.onPageChanged(mMainActionBar.getSelectedNavigationIndex());
}
public void unregisterPageChangedListener(DeskClockFragment frag) {
mFragmentTags.remove(frag.getTag());
}
private boolean isRtl() {
return TextUtils.getLayoutDirectionFromLocale(Locale.getDefault()) ==
View.LAYOUT_DIRECTION_RTL;
}
private int getRtlPosition(int position) {
if (isRtl()) {
switch (position) {
case TIMER_TAB_INDEX:
return RTL_TIMER_TAB_INDEX;
case CLOCK_TAB_INDEX:
return RTL_CLOCK_TAB_INDEX;
case STOPWATCH_TAB_INDEX:
return RTL_STOPWATCH_TAB_INDEX;
default:
break;
}
}
return position;
}
}
public static abstract class OnTapListener implements OnTouchListener {
private float mLastTouchX;
private float mLastTouchY;
private long mLastTouchTime;
private final TextView mMakePressedTextView;
private final int mPressedColor, mGrayColor;
private final float MAX_MOVEMENT_ALLOWED = 20;
private final long MAX_TIME_ALLOWED = 500;
public OnTapListener(Activity activity, TextView makePressedView) {
mMakePressedTextView = makePressedView;
mPressedColor = activity.getResources().getColor(Utils.getPressedColorId());
mGrayColor = activity.getResources().getColor(Utils.getGrayColorId());
}
@Override
public boolean onTouch(View v, MotionEvent e) {
switch (e.getAction()) {
case (MotionEvent.ACTION_DOWN):
mLastTouchTime = Utils.getTimeNow();
mLastTouchX = e.getX();
mLastTouchY = e.getY();
if (mMakePressedTextView != null) {
mMakePressedTextView.setTextColor(mPressedColor);
}
break;
case (MotionEvent.ACTION_UP):
float xDiff = Math.abs(e.getX()-mLastTouchX);
float yDiff = Math.abs(e.getY()-mLastTouchY);
long timeDiff = (Utils.getTimeNow() - mLastTouchTime);
if (xDiff < MAX_MOVEMENT_ALLOWED && yDiff < MAX_MOVEMENT_ALLOWED
&& timeDiff < MAX_TIME_ALLOWED) {
if (mMakePressedTextView != null) {
v = mMakePressedTextView;
}
processClick(v);
resetValues();
return true;
}
resetValues();
break;
case (MotionEvent.ACTION_MOVE):
xDiff = Math.abs(e.getX()-mLastTouchX);
yDiff = Math.abs(e.getY()-mLastTouchY);
if (xDiff >= MAX_MOVEMENT_ALLOWED || yDiff >= MAX_MOVEMENT_ALLOWED) {
resetValues();
}
break;
default:
resetValues();
}
return false;
}
private void resetValues() {
mLastTouchX = -1*MAX_MOVEMENT_ALLOWED + 1;
mLastTouchY = -1*MAX_MOVEMENT_ALLOWED + 1;
mLastTouchTime = -1*MAX_TIME_ALLOWED + 1;
if (mMakePressedTextView != null) {
mMakePressedTextView.setTextColor(mGrayColor);
}
}
protected abstract void processClick(View v);
}
/** Called by the LabelDialogFormat class after the dialog is finished. **/
@Override
public void onDialogLabelSet(TimerObj timer, String label, String tag) {
Fragment frag = getFragmentManager().findFragmentByTag(tag);
if (frag instanceof TimerFragment) {
((TimerFragment) frag).setLabel(timer, label);
}
}
}
我只有android.support.v4，我在哪里可以获得v13？为什么它需要同时导入 v4 和 v13 ？
如何在不修改代码的情况下通过编译？