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auto import from //depot/cupcake/@132589

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This commit is contained in:
The Android Open Source Project
2009-03-03 14:03:58 -08:00
parent b8747bc7b1
commit d2f2b1d7b7
91 changed files with 829 additions and 3654 deletions
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2
samples/Home/src/com/example/android/home/ApplicationsStackLayout.java
View File

@@ -105,7 +105,7 @@ public class ApplicationsStackLayout extends ViewGroup implements View.OnClickLi
a.recycle();
mIconSize = 42; //(int) getResources().getDimension(android.R.dimen.app_icon_size);
mIconSize = (int) getResources().getDimension(android.R.dimen.app_icon_size);
initLayout();
}

205
samples/Home/src/com/example/android/home/Home.java
View File

@@ -21,26 +21,28 @@ import android.app.ActivityManager;
import android.app.SearchManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.ColorFilter;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.PaintDrawable;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.util.Log;
import android.util.Xml;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
@@ -55,19 +57,14 @@ import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.GridView;
import android.widget.TextView;
import android.net.Uri;
import java.io.IOException;
import java.io.FileReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
public class Home extends Activity {
/**
* Tag used for logging errors.
@@ -79,13 +76,6 @@ public class Home extends Activity {
*/
private static final String KEY_SAVE_GRID_OPENED = "grid.opened";
private static final String DEFAULT_FAVORITES_PATH = "etc/favorites.xml";
private static final String TAG_FAVORITES = "favorites";
private static final String TAG_FAVORITE = "favorite";
private static final String TAG_PACKAGE = "package";
private static final String TAG_CLASS = "class";
// Identifiers for option menu items
private static final int MENU_WALLPAPER_SETTINGS = Menu.FIRST + 1;
private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
@@ -100,8 +90,11 @@ public class Home extends Activity {
private static ArrayList<ApplicationInfo> mApplications;
private static LinkedList<ApplicationInfo> mFavorites;
private Handler mHandler = new Handler();
private final BroadcastReceiver mWallpaperReceiver = new WallpaperIntentReceiver();
private final BroadcastReceiver mApplicationsReceiver = new ApplicationsIntentReceiver();
private final ContentObserver mObserver = new FavoritesChangeObserver();
private GridView mGrid;
@@ -127,6 +120,7 @@ public class Home extends Activity {
setContentView(R.layout.home);
registerIntentReceivers();
registerContentObservers();
setDefaultWallpaper();
@@ -162,6 +156,7 @@ public class Home extends Activity {
mApplications.get(i).icon.setCallback(null);
}
getContentResolver().unregisterContentObserver(mObserver);
unregisterReceiver(mWallpaperReceiver);
unregisterReceiver(mApplicationsReceiver);
}
@@ -203,6 +198,16 @@ public class Home extends Activity {
registerReceiver(mApplicationsReceiver, filter);
}
/**
* Registers various content observers. The current implementation registers
* only a favorites observer to keep track of the favorites applications.
*/
private void registerContentObservers() {
ContentResolver resolver = getContentResolver();
resolver.registerContentObserver(Uri.parse("content://" +
android.provider.Settings.AUTHORITY + "/favorites?notify=true"), true, mObserver);
}
/**
* Creates a new appplications adapter for the grid view and registers it.
*/
@@ -242,7 +247,7 @@ public class Home extends Activity {
Log.e(LOG_TAG, "Failed to clear wallpaper " + e);
}
} else {
getWindow().setBackgroundDrawable(new ClippedDrawable(wallpaper));
getWindow().setBackgroundDrawable(wallpaper);
}
mWallpaperChecked = true;
}
@@ -254,17 +259,18 @@ public class Home extends Activity {
*/
private void bindFavorites(boolean isLaunching) {
if (!isLaunching || mFavorites == null) {
final Cursor c = getContentResolver().query(Uri.parse("content://" +
android.provider.Settings.AUTHORITY + "/favorites?notify=true"),
null, null, null, "cellX");
FileReader favReader;
final int intentIndex = c.getColumnIndexOrThrow("intent");
final int titleIndex = c.getColumnIndexOrThrow("title");
final int typeIndex = c.getColumnIndexOrThrow("itemType");
// Environment.getRootDirectory() is a fancy way of saying ANDROID_ROOT or "/system".
final File favFile = new File(Environment.getRootDirectory(), DEFAULT_FAVORITES_PATH);
try {
favReader = new FileReader(favFile);
} catch (FileNotFoundException e) {
Log.e(LOG_TAG, "Couldn't find or open favorites file " + favFile);
return;
}
final PackageManager manager = getPackageManager();
ApplicationInfo info;
String intentDescription;
if (mFavorites == null) {
mFavorites = new LinkedList<ApplicationInfo>();
@@ -272,77 +278,38 @@ public class Home extends Activity {
mFavorites.clear();
}
final Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
while (c.moveToNext()) {
final int itemType = c.getInt(typeIndex);
final PackageManager packageManager = getPackageManager();
if (itemType == 0 || // 0 == application
itemType == 1) { // 1 == shortcut
try {
final XmlPullParser parser = Xml.newPullParser();
parser.setInput(favReader);
beginDocument(parser, TAG_FAVORITES);
ApplicationInfo info;
while (true) {
nextElement(parser);
String name = parser.getName();
if (!TAG_FAVORITE.equals(name)) {
break;
intentDescription = c.getString(intentIndex);
if (intentDescription == null) {
continue;
}
final String favoritePackage = parser.getAttributeValue(null, TAG_PACKAGE);
final String favoriteClass = parser.getAttributeValue(null, TAG_CLASS);
final ComponentName cn = new ComponentName(favoritePackage, favoriteClass);
intent.setComponent(cn);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
info = getApplicationInfo(packageManager, intent);
Intent intent;
try {
intent = Intent.getIntent(intentDescription);
} catch (java.net.URISyntaxException e) {
continue;
}
info = getApplicationInfo(manager, intent);
if (info != null) {
info.title = c.getString(titleIndex);
info.intent = intent;
mFavorites.addFirst(info);
}
}
} catch (XmlPullParserException e) {
Log.w(LOG_TAG, "Got exception parsing favorites.", e);
} catch (IOException e) {
Log.w(LOG_TAG, "Got exception parsing favorites.", e);
}
c.close();
}
mApplicationsStack.setFavorites(mFavorites);
}
private static void beginDocument(XmlPullParser parser, String firstElementName)
throws XmlPullParserException, IOException {
int type;
while ((type = parser.next()) != XmlPullParser.START_TAG &&
type != XmlPullParser.END_DOCUMENT) {
// Empty
}
if (type != XmlPullParser.START_TAG) {
throw new XmlPullParserException("No start tag found");
}
if (!parser.getName().equals(firstElementName)) {
throw new XmlPullParserException("Unexpected start tag: found " + parser.getName() +
", expected " + firstElementName);
}
}
private static void nextElement(XmlPullParser parser) throws XmlPullParserException, IOException {
int type;
while ((type = parser.next()) != XmlPullParser.START_TAG &&
type != XmlPullParser.END_DOCUMENT) {
// Empty
}
}
/**
* Refreshes the recently launched applications stacked over the favorites. The number
* of recents depends on how many favorites are present.
@@ -394,6 +361,14 @@ public class Home extends Activity {
return info;
}
/**
* When the notification that favorites have changed is received, requests
* a favorites list refresh.
*/
private void onFavoritesChanged() {
bindFavorites(false);
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
@@ -555,7 +530,7 @@ public class Home extends Activity {
private class WallpaperIntentReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
getWindow().setBackgroundDrawable(new ClippedDrawable(getWallpaper()));
getWindow().setBackgroundDrawable(getWallpaper());
}
}
@@ -572,6 +547,20 @@ public class Home extends Activity {
}
}
/**
* Receives notifications whenever the user favorites have changed.
*/
private class FavoritesChangeObserver extends ContentObserver {
public FavoritesChangeObserver() {
super(mHandler);
}
@Override
public void onChange(boolean selfChange) {
onFavoritesChanged();
}
}
/**
* GridView adapter to show the list of all installed applications.
*/
@@ -591,12 +580,13 @@ public class Home extends Activity {
convertView = inflater.inflate(R.layout.application, parent, false);
}
//final ImageView imageView = (ImageView) convertView.findViewById(R.id.icon);
Drawable icon = info.icon;
if (!info.filtered) {
//final Resources resources = getContext().getResources();
int width = 42;//(int) resources.getDimension(android.R.dimen.app_icon_size);
int height = 42;//(int) resources.getDimension(android.R.dimen.app_icon_size);
final Resources resources = getContext().getResources();
int width = (int) resources.getDimension(android.R.dimen.app_icon_size);
int height = (int) resources.getDimension(android.R.dimen.app_icon_size);
final int iconWidth = icon.getIntrinsicWidth();
final int iconHeight = icon.getIntrinsicHeight();
@@ -697,47 +687,4 @@ public class Home extends Activity {
startActivity(app.intent);
}
}
/**
* When a drawable is attached to a View, the View gives the Drawable its dimensions
* by calling Drawable.setBounds(). In this application, the View that draws the
* wallpaper has the same size as the screen. However, the wallpaper might be larger
* that the screen which means it will be automatically stretched. Because stretching
* a bitmap while drawing it is very expensive, we use a ClippedDrawable instead.
* This drawable simply draws another wallpaper but makes sure it is not stretched
* by always giving it its intrinsic dimensions. If the wallpaper is larger than the
* screen, it will simply get clipped but it won't impact performance.
*/
private class ClippedDrawable extends Drawable {
private final Drawable mWallpaper;
public ClippedDrawable(Drawable wallpaper) {
mWallpaper = wallpaper;
}
@Override
public void setBounds(int left, int top, int right, int bottom) {
super.setBounds(left, top, right, bottom);
// Ensure the wallpaper is as large as it really is, to avoid stretching it
// at drawing time
mWallpaper.setBounds(left, top, left + mWallpaper.getIntrinsicWidth(),
top + mWallpaper.getIntrinsicHeight());
}
public void draw(Canvas canvas) {
mWallpaper.draw(canvas);
}
public void setAlpha(int alpha) {
mWallpaper.setAlpha(alpha);
}
public void setColorFilter(ColorFilter cf) {
mWallpaper.setColorFilter(cf);
}
public int getOpacity() {
return mWallpaper.getOpacity();
}
}
}