diff options
Diffstat (limited to 'src/com/android/settings/ActivityPicker.java')
| -rw-r--r-- | src/com/android/settings/ActivityPicker.java | 396 |
1 files changed, 374 insertions, 22 deletions
diff --git a/src/com/android/settings/ActivityPicker.java b/src/com/android/settings/ActivityPicker.java index 47e005f..f2931be 100644 --- a/src/com/android/settings/ActivityPicker.java +++ b/src/com/android/settings/ActivityPicker.java @@ -1,5 +1,5 @@ /* - * Copyright (C) 2009 Google Inc. + * 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. @@ -16,43 +16,395 @@ package com.android.settings; -import android.app.LauncherActivity; +import com.android.internal.app.AlertActivity; +import com.android.internal.app.AlertController; + +import android.app.Activity; +import android.content.Context; +import android.content.DialogInterface; import android.content.Intent; +import android.content.Intent.ShortcutIconResource; +import android.content.pm.PackageManager; +import android.content.pm.ResolveInfo; +import android.content.pm.PackageManager.NameNotFoundException; +import android.content.res.Resources; +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.drawable.BitmapDrawable; +import android.graphics.drawable.Drawable; +import android.graphics.drawable.PaintDrawable; +import android.os.Bundle; import android.os.Parcelable; +import android.view.Gravity; +import android.view.LayoutInflater; import android.view.View; -import android.widget.ListView; +import android.view.ViewGroup; +import android.view.WindowManager; +import android.widget.BaseAdapter; +import android.widget.TextView; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; /** - * Displays a list of all activities matching the incoming {@link Intent.EXTRA_INTENT} - * query, along with any applicable icons. + * Displays a list of all activities matching the incoming + * {@link Intent#EXTRA_INTENT} query, along with any injected items. */ -public class ActivityPicker extends LauncherActivity { +public class ActivityPicker extends AlertActivity implements + DialogInterface.OnClickListener, DialogInterface.OnCancelListener { + + /** + * Adapter of items that are displayed in this dialog. + */ + private PickAdapter mAdapter; + + /** + * Base {@link Intent} used when building list. + */ + private Intent mBaseIntent; @Override - protected Intent getTargetIntent() { - Intent intent = this.getIntent(); - Intent targetIntent = new Intent(Intent.ACTION_MAIN, null); - targetIntent.addCategory(Intent.CATEGORY_DEFAULT); + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); - // Use a custom title for this dialog, if provided - if (intent.hasExtra(Intent.EXTRA_TITLE)) { - String title = intent.getStringExtra(Intent.EXTRA_TITLE); - setTitle(title); - } + final Intent intent = getIntent(); + // Read base intent from extras, otherwise assume default Parcelable parcel = intent.getParcelableExtra(Intent.EXTRA_INTENT); if (parcel instanceof Intent) { - targetIntent = (Intent) parcel; + mBaseIntent = (Intent) parcel; + } else { + mBaseIntent = new Intent(Intent.ACTION_MAIN, null); + mBaseIntent.addCategory(Intent.CATEGORY_DEFAULT); } + + // Create dialog parameters + AlertController.AlertParams params = mAlertParams; + params.mOnClickListener = this; + params.mOnCancelListener = this; - return targetIntent; - } + // Use custom title if provided, otherwise default window title + if (intent.hasExtra(Intent.EXTRA_TITLE)) { + params.mTitle = intent.getStringExtra(Intent.EXTRA_TITLE); + } else { + params.mTitle = getTitle(); + } + + // Build list adapter of pickable items + List<PickAdapter.Item> items = getItems(); + mAdapter = new PickAdapter(this, items); + params.mAdapter = mAdapter; - @Override - protected void onListItemClick(ListView l, View v, int position, long id) { - Intent intent = intentForPosition(position); - setResult(RESULT_OK, intent); + setupAlert(); + } + + /** + * Handle clicking of dialog item by passing back + * {@link #getIntentForPosition(int)} in {@link #setResult(int, Intent)}. + */ + public void onClick(DialogInterface dialog, int which) { + Intent intent = getIntentForPosition(which); + setResult(Activity.RESULT_OK, intent); + finish(); + } + + /** + * Handle canceled dialog by passing back {@link Activity#RESULT_CANCELED}. + */ + public void onCancel(DialogInterface dialog) { + setResult(Activity.RESULT_CANCELED); finish(); } + /** + * Build the specific {@link Intent} for a given list position. Convenience + * method that calls through to {@link PickAdapter.Item#getIntent(Intent)}. + */ + protected Intent getIntentForPosition(int position) { + PickAdapter.Item item = (PickAdapter.Item) mAdapter.getItem(position); + return item.getIntent(mBaseIntent); + } + + /** + * Build and return list of items to be shown in dialog. Default + * implementation mixes activities matching {@link #mBaseIntent} from + * {@link #putIntentItems(Intent, List)} with any injected items from + * {@link Intent#EXTRA_SHORTCUT_NAME}. Override this method in subclasses to + * change the items shown. + */ + protected List<PickAdapter.Item> getItems() { + PackageManager packageManager = getPackageManager(); + List<PickAdapter.Item> items = new ArrayList<PickAdapter.Item>(); + + // Add any injected pick items + final Intent intent = getIntent(); + ArrayList<String> labels = + intent.getStringArrayListExtra(Intent.EXTRA_SHORTCUT_NAME); + ArrayList<ShortcutIconResource> icons = + intent.getParcelableArrayListExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE); + + if (labels != null && icons != null && labels.size() == icons.size()) { + for (int i = 0; i < labels.size(); i++) { + String label = labels.get(i); + Drawable icon = null; + + try { + // Try loading icon from requested package + ShortcutIconResource iconResource = icons.get(i); + Resources res = packageManager.getResourcesForApplication( + iconResource.packageName); + icon = res.getDrawable(res.getIdentifier( + iconResource.resourceName, null, null)); + } catch (NameNotFoundException e) { + } + + items.add(new PickAdapter.Item(this, label, icon)); + } + } + + // Add any intent items if base was given + if (mBaseIntent != null) { + putIntentItems(mBaseIntent, items); + } + + return items; + } + + /** + * Fill the given list with any activities matching the base {@link Intent}. + */ + protected void putIntentItems(Intent baseIntent, List<PickAdapter.Item> items) { + PackageManager packageManager = getPackageManager(); + List<ResolveInfo> list = packageManager.queryIntentActivities(baseIntent, + 0 /* no flags */); + Collections.sort(list, new ResolveInfo.DisplayNameComparator(packageManager)); + + final int listSize = list.size(); + for (int i = 0; i < listSize; i++) { + ResolveInfo resolveInfo = list.get(i); + items.add(new PickAdapter.Item(this, packageManager, resolveInfo)); + } + } + + /** + * Adapter which shows the set of activities that can be performed for a + * given {@link Intent}. + */ + protected static class PickAdapter extends BaseAdapter { + + /** + * Item that appears in a {@link PickAdapter} list. + */ + public static class Item { + protected static IconResizer sResizer; + + protected IconResizer getResizer(Context context) { + if (sResizer == null) { + sResizer = new IconResizer(context); + } + return sResizer; + } + + CharSequence label; + Drawable icon; + String packageName; + String className; + Bundle extras; + + /** + * Create a list item from given label and icon. + */ + Item(Context context, CharSequence label, Drawable icon) { + this.label = label; + this.icon = getResizer(context).createIconThumbnail(icon); + } + + /** + * Create a list item and fill it with details from the given + * {@link ResolveInfo} object. + */ + Item(Context context, PackageManager pm, ResolveInfo resolveInfo) { + label = resolveInfo.loadLabel(pm); + if (label == null && resolveInfo.activityInfo != null) { + label = resolveInfo.activityInfo.name; + } + + icon = getResizer(context).createIconThumbnail(resolveInfo.loadIcon(pm)); + packageName = resolveInfo.activityInfo.applicationInfo.packageName; + className = resolveInfo.activityInfo.name; + } + + /** + * Build the {@link Intent} described by this item. If this item + * can't create a valid {@link ComponentName}, it will return + * {@link Intent#ACTION_CREATE_SHORTCUT} filled with the item label. + */ + Intent getIntent(Intent baseIntent) { + Intent intent = new Intent(baseIntent); + if (packageName != null && className != null) { + // Valid package and class, so fill details as normal intent + intent.setClassName(packageName, className); + if (extras != null) { + intent.putExtras(extras); + } + } else { + // No valid package or class, so treat as shortcut with label + intent.setAction(Intent.ACTION_CREATE_SHORTCUT); + intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, label); + } + return intent; + } + } + + private final LayoutInflater mInflater; + + private List<Item> mItems; + private int mLayoutRes = R.layout.pick_item; + + /** + * Create an adapter for the given items. + */ + public PickAdapter(Context context, List<Item> items) { + mInflater = (LayoutInflater) + context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); + mItems = items; + } + + /** + * {@inheritDoc} + */ + public int getCount() { + return mItems.size(); + } + + /** + * {@inheritDoc} + */ + public Object getItem(int position) { + return mItems.get(position); + } + + /** + * {@inheritDoc} + */ + public long getItemId(int position) { + return position; + } + + /** + * {@inheritDoc} + */ + public View getView(int position, View convertView, ViewGroup parent) { + if (convertView == null) { + convertView = mInflater.inflate(mLayoutRes, parent, false); + } + + Item item = (Item) getItem(position); + TextView textView = (TextView) convertView; + textView.setText(item.label); + textView.setCompoundDrawablesWithIntrinsicBounds(item.icon, null, null, null); + + return convertView; + } + } + + /** + * Utility class to resize icons to match default icon size. Code is mostly + * borrowed from Launcher. + */ + private static class IconResizer { + private int mIconWidth = -1; + private int mIconHeight = -1; + + private final Rect mOldBounds = new Rect(); + private Canvas mCanvas = new Canvas(); + + public IconResizer(Context context) { + mCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG, + Paint.FILTER_BITMAP_FLAG)); + + final Resources resources = context.getResources(); + mIconWidth = mIconHeight = (int) resources.getDimension( + android.R.dimen.app_icon_size); + } + + /** + * Returns a Drawable representing the thumbnail of the specified Drawable. + * The size of the thumbnail is defined by the dimension + * android.R.dimen.launcher_application_icon_size. + * + * This method is not thread-safe and should be invoked on the UI thread only. + * + * @param icon The icon to get a thumbnail of. + * + * @return A thumbnail for the specified icon or the icon itself if the + * thumbnail could not be created. + */ + public Drawable createIconThumbnail(Drawable icon) { + int width = mIconWidth; + int height = mIconHeight; + + if (icon == null) { + return null; + } + + final int iconWidth = icon.getIntrinsicWidth(); + final int iconHeight = icon.getIntrinsicHeight(); + + if (icon instanceof PaintDrawable) { + PaintDrawable painter = (PaintDrawable) icon; + painter.setIntrinsicWidth(width); + painter.setIntrinsicHeight(height); + } + + if (width > 0 && height > 0) { + if (width < iconWidth || height < iconHeight) { + final float ratio = (float) iconWidth / iconHeight; + + if (iconWidth > iconHeight) { + height = (int) (width / ratio); + } else if (iconHeight > iconWidth) { + width = (int) (height * ratio); + } + + final Bitmap.Config c = icon.getOpacity() != PixelFormat.OPAQUE ? + Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; + final Bitmap thumb = Bitmap.createBitmap(mIconWidth, mIconHeight, c); + final Canvas canvas = mCanvas; + canvas.setBitmap(thumb); + // Copy the old bounds to restore them later + // If we were to do oldBounds = icon.getBounds(), + // the call to setBounds() that follows would + // change the same instance and we would lose the + // old bounds + mOldBounds.set(icon.getBounds()); + final int x = (mIconWidth - width) / 2; + final int y = (mIconHeight - height) / 2; + icon.setBounds(x, y, x + width, y + height); + icon.draw(canvas); + icon.setBounds(mOldBounds); + icon = new BitmapDrawable(thumb); + } else if (iconWidth < width && iconHeight < height) { + final Bitmap.Config c = Bitmap.Config.ARGB_8888; + final Bitmap thumb = Bitmap.createBitmap(mIconWidth, mIconHeight, c); + final Canvas canvas = mCanvas; + canvas.setBitmap(thumb); + mOldBounds.set(icon.getBounds()); + final int x = (width - iconWidth) / 2; + final int y = (height - iconHeight) / 2; + icon.setBounds(x, y, x + iconWidth, y + iconHeight); + icon.draw(canvas); + icon.setBounds(mOldBounds); + icon = new BitmapDrawable(thumb); + } + } + + return icon; + } + } } |