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/*
* Copyright (C) 2008 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.internal.app;
import android.os.AsyncTask;
import com.android.internal.R;
import com.android.internal.content.PackageMonitor;
import android.app.ActivityManager;
import android.app.ActivityManagerNative;
import android.app.AppGlobals;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ActivityInfo;
import android.content.pm.LabeledIntent;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.PatternMatcher;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* This activity is displayed when the system attempts to start an Intent for
* which there is more than one matching activity, allowing the user to decide
* which to go to. It is not normally used directly by application developers.
*/
public class ResolverActivity extends AlertActivity implements AdapterView.OnItemClickListener {
private static final String TAG = "ResolverActivity";
private static final boolean DEBUG = false;
private int mLaunchedFromUid;
private ResolveListAdapter mAdapter;
private PackageManager mPm;
private boolean mAlwaysUseOption;
private boolean mShowExtended;
private ListView mListView;
private Button mAlwaysButton;
private Button mOnceButton;
private int mIconDpi;
private int mIconSize;
private int mMaxColumns;
private int mLastSelected = ListView.INVALID_POSITION;
private boolean mRegistered;
private final PackageMonitor mPackageMonitor = new PackageMonitor() {
@Override public void onSomePackagesChanged() {
mAdapter.handlePackagesChanged();
}
};
private Intent makeMyIntent() {
Intent intent = new Intent(getIntent());
intent.setComponent(null);
// The resolver activity is set to be hidden from recent tasks.
// we don't want this attribute to be propagated to the next activity
// being launched. Note that if the original Intent also had this
// flag set, we are now losing it. That should be a very rare case
// and we can live with this.
intent.setFlags(intent.getFlags()&~Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
return intent;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
// Use a specialized prompt when we're handling the 'Home' app startActivity()
final int titleResource;
final Intent intent = makeMyIntent();
final Set categories = intent.getCategories();
if (Intent.ACTION_MAIN.equals(intent.getAction())
&& categories != null
&& categories.size() == 1
&& categories.contains(Intent.CATEGORY_HOME)) {
titleResource = com.android.internal.R.string.whichHomeApplication;
} else {
titleResource = com.android.internal.R.string.whichApplication;
}
onCreate(savedInstanceState, intent, getResources().getText(titleResource),
null, null, true);
}
protected void onCreate(Bundle savedInstanceState, Intent intent,
CharSequence title, Intent[] initialIntents, List rList,
boolean alwaysUseOption) {
setTheme(R.style.Theme_DeviceDefault_Light_Dialog_Alert);
super.onCreate(savedInstanceState);
try {
mLaunchedFromUid = ActivityManagerNative.getDefault().getLaunchedFromUid(
getActivityToken());
} catch (RemoteException e) {
mLaunchedFromUid = -1;
}
mPm = getPackageManager();
mAlwaysUseOption = alwaysUseOption;
mMaxColumns = getResources().getInteger(R.integer.config_maxResolverActivityColumns);
AlertController.AlertParams ap = mAlertParams;
ap.mTitle = title;
mPackageMonitor.register(this, getMainLooper(), false);
mRegistered = true;
final ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
mIconDpi = am.getLauncherLargeIconDensity();
mIconSize = am.getLauncherLargeIconSize();
mAdapter = new ResolveListAdapter(this, intent, initialIntents, rList,
mLaunchedFromUid);
int count = mAdapter.getCount();
if (mLaunchedFromUid < 0 || UserHandle.isIsolated(mLaunchedFromUid)) {
// Gulp!
finish();
return;
} else if (count > 1) {
ap.mView = getLayoutInflater().inflate(R.layout.resolver_list, null);
mListView = (ListView) ap.mView.findViewById(R.id.resolver_list);
mListView.setAdapter(mAdapter);
mListView.setOnItemClickListener(this);
mListView.setOnItemLongClickListener(new ItemLongClickListener());
if (alwaysUseOption) {
mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
}
} else if (count == 1) {
startActivity(mAdapter.intentForPosition(0));
mPackageMonitor.unregister();
mRegistered = false;
finish();
return;
} else {
ap.mMessage = getResources().getText(R.string.noApplications);
}
setupAlert();
if (alwaysUseOption) {
final ViewGroup buttonLayout = (ViewGroup) findViewById(R.id.button_bar);
if (buttonLayout != null) {
buttonLayout.setVisibility(View.VISIBLE);
mAlwaysButton = (Button) buttonLayout.findViewById(R.id.button_always);
mOnceButton = (Button) buttonLayout.findViewById(R.id.button_once);
} else {
mAlwaysUseOption = false;
}
}
final int initialHighlight = mAdapter.getInitialHighlight();
if (initialHighlight >= 0) {
mListView.setItemChecked(initialHighlight, true);
onItemClick(null, null, initialHighlight, 0); // Other entries are not used
}
}
Drawable getIcon(Resources res, int resId) {
Drawable result;
try {
result = res.getDrawableForDensity(resId, mIconDpi);
} catch (Resources.NotFoundException e) {
result = null;
}
return result;
}
Drawable loadIconForResolveInfo(ResolveInfo ri) {
Drawable dr;
try {
if (ri.resolvePackageName != null && ri.icon != 0) {
dr = getIcon(mPm.getResourcesForApplication(ri.resolvePackageName), ri.icon);
if (dr != null) {
return dr;
}
}
final int iconRes = ri.getIconResource();
if (iconRes != 0) {
dr = getIcon(mPm.getResourcesForApplication(ri.activityInfo.packageName), iconRes);
if (dr != null) {
return dr;
}
}
} catch (NameNotFoundException e) {
Log.e(TAG, "Couldn't find resources for package", e);
}
return ri.loadIcon(mPm);
}
@Override
protected void onRestart() {
super.onRestart();
if (!mRegistered) {
mPackageMonitor.register(this, getMainLooper(), false);
mRegistered = true;
}
mAdapter.handlePackagesChanged();
}
@Override
protected void onStop() {
super.onStop();
if (mRegistered) {
mPackageMonitor.unregister();
mRegistered = false;
}
if ((getIntent().getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) {
// This resolver is in the unusual situation where it has been
// launched at the top of a new task. We don't let it be added
// to the recent tasks shown to the user, and we need to make sure
// that each time we are launched we get the correct launching
// uid (not re-using the same resolver from an old launching uid),
// so we will now finish ourself since being no longer visible,
// the user probably can't get back to us.
if (!isChangingConfigurations()) {
finish();
}
}
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
if (mAlwaysUseOption) {
final int checkedPos = mListView.getCheckedItemPosition();
final boolean enabled = checkedPos != ListView.INVALID_POSITION;
mLastSelected = checkedPos;
mAlwaysButton.setEnabled(enabled);
mOnceButton.setEnabled(enabled);
if (enabled) {
mListView.setSelection(checkedPos);
}
}
}
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
final int checkedPos = mListView.getCheckedItemPosition();
final boolean hasValidSelection = checkedPos != ListView.INVALID_POSITION;
if (mAlwaysUseOption && (!hasValidSelection || mLastSelected != checkedPos)) {
mAlwaysButton.setEnabled(hasValidSelection);
mOnceButton.setEnabled(hasValidSelection);
if (hasValidSelection) {
mListView.smoothScrollToPosition(checkedPos);
}
mLastSelected = checkedPos;
} else {
startSelected(position, false);
}
}
public void onButtonClick(View v) {
final int id = v.getId();
startSelected(mListView.getCheckedItemPosition(), id == R.id.button_always);
dismiss();
}
void startSelected(int which, boolean always) {
if (isFinishing()) {
return;
}
ResolveInfo ri = mAdapter.resolveInfoForPosition(which);
Intent intent = mAdapter.intentForPosition(which);
onIntentSelected(ri, intent, always);
finish();
}
protected void onIntentSelected(ResolveInfo ri, Intent intent, boolean alwaysCheck) {
if (mAlwaysUseOption && mAdapter.mOrigResolveList != null) {
// Build a reasonable intent filter, based on what matched.
IntentFilter filter = new IntentFilter();
if (intent.getAction() != null) {
filter.addAction(intent.getAction());
}
Set categories = intent.getCategories();
if (categories != null) {
for (String cat : categories) {
filter.addCategory(cat);
}
}
filter.addCategory(Intent.CATEGORY_DEFAULT);
int cat = ri.match&IntentFilter.MATCH_CATEGORY_MASK;
Uri data = intent.getData();
if (cat == IntentFilter.MATCH_CATEGORY_TYPE) {
String mimeType = intent.resolveType(this);
if (mimeType != null) {
try {
filter.addDataType(mimeType);
} catch (IntentFilter.MalformedMimeTypeException e) {
Log.w("ResolverActivity", e);
filter = null;
}
}
}
if (data != null && data.getScheme() != null) {
// We need the data specification if there was no type,
// OR if the scheme is not one of our magical "file:"
// or "content:" schemes (see IntentFilter for the reason).
if (cat != IntentFilter.MATCH_CATEGORY_TYPE
|| (!"file".equals(data.getScheme())
&& !"content".equals(data.getScheme()))) {
filter.addDataScheme(data.getScheme());
// Look through the resolved filter to determine which part
// of it matched the original Intent.
Iterator pIt = ri.filter.schemeSpecificPartsIterator();
if (pIt != null) {
String ssp = data.getSchemeSpecificPart();
while (ssp != null && pIt.hasNext()) {
PatternMatcher p = pIt.next();
if (p.match(ssp)) {
filter.addDataSchemeSpecificPart(p.getPath(), p.getType());
break;
}
}
}
Iterator aIt = ri.filter.authoritiesIterator();
if (aIt != null) {
while (aIt.hasNext()) {
IntentFilter.AuthorityEntry a = aIt.next();
if (a.match(data) >= 0) {
int port = a.getPort();
filter.addDataAuthority(a.getHost(),
port >= 0 ? Integer.toString(port) : null);
break;
}
}
}
pIt = ri.filter.pathsIterator();
if (pIt != null) {
String path = data.getPath();
while (path != null && pIt.hasNext()) {
PatternMatcher p = pIt.next();
if (p.match(path)) {
filter.addDataPath(p.getPath(), p.getType());
break;
}
}
}
}
}
if (filter != null) {
final int N = mAdapter.mOrigResolveList.size();
ComponentName[] set = new ComponentName[N];
int bestMatch = 0;
for (int i=0; i bestMatch) bestMatch = r.match;
}
if (alwaysCheck) {
getPackageManager().addPreferredActivity(filter, bestMatch, set,
intent.getComponent());
} else {
try {
AppGlobals.getPackageManager().setLastChosenActivity(intent,
intent.resolveTypeIfNeeded(getContentResolver()),
PackageManager.MATCH_DEFAULT_ONLY,
filter, bestMatch, intent.getComponent());
} catch (RemoteException re) {
Log.d(TAG, "Error calling setLastChosenActivity\n" + re);
}
}
}
}
if (intent != null) {
startActivity(intent);
}
}
void showAppDetails(ResolveInfo ri) {
Intent in = new Intent().setAction("android.settings.APPLICATION_DETAILS_SETTINGS")
.setData(Uri.fromParts("package", ri.activityInfo.packageName, null))
.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
startActivity(in);
}
private final class DisplayResolveInfo {
ResolveInfo ri;
CharSequence displayLabel;
Drawable displayIcon;
CharSequence extendedInfo;
Intent origIntent;
DisplayResolveInfo(ResolveInfo pri, CharSequence pLabel,
CharSequence pInfo, Intent pOrigIntent) {
ri = pri;
displayLabel = pLabel;
extendedInfo = pInfo;
origIntent = pOrigIntent;
}
}
private final class ResolveListAdapter extends BaseAdapter {
private final Intent[] mInitialIntents;
private final List mBaseResolveList;
private ResolveInfo mLastChosen;
private final Intent mIntent;
private final int mLaunchedFromUid;
private final LayoutInflater mInflater;
List mList;
List mOrigResolveList;
private int mInitialHighlight = -1;
public ResolveListAdapter(Context context, Intent intent,
Intent[] initialIntents, List rList, int launchedFromUid) {
mIntent = new Intent(intent);
mInitialIntents = initialIntents;
mBaseResolveList = rList;
mLaunchedFromUid = launchedFromUid;
mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mList = new ArrayList();
rebuildList();
}
public void handlePackagesChanged() {
final int oldItemCount = getCount();
rebuildList();
notifyDataSetChanged();
final int newItemCount = getCount();
if (newItemCount == 0) {
// We no longer have any items... just finish the activity.
finish();
}
}
public int getInitialHighlight() {
return mInitialHighlight;
}
private void rebuildList() {
List currentResolveList;
try {
mLastChosen = AppGlobals.getPackageManager().getLastChosenActivity(
mIntent, mIntent.resolveTypeIfNeeded(getContentResolver()),
PackageManager.MATCH_DEFAULT_ONLY);
} catch (RemoteException re) {
Log.d(TAG, "Error calling setLastChosenActivity\n" + re);
}
mList.clear();
if (mBaseResolveList != null) {
currentResolveList = mBaseResolveList;
mOrigResolveList = null;
} else {
currentResolveList = mOrigResolveList = mPm.queryIntentActivities(
mIntent, PackageManager.MATCH_DEFAULT_ONLY
| (mAlwaysUseOption ? PackageManager.GET_RESOLVED_FILTER : 0));
// Filter out any activities that the launched uid does not
// have permission for. We don't do this when we have an explicit
// list of resolved activities, because that only happens when
// we are being subclassed, so we can safely launch whatever
// they gave us.
if (currentResolveList != null) {
for (int i=currentResolveList.size()-1; i >= 0; i--) {
ActivityInfo ai = currentResolveList.get(i).activityInfo;
int granted = ActivityManager.checkComponentPermission(
ai.permission, mLaunchedFromUid,
ai.applicationInfo.uid, ai.exported);
if (granted != PackageManager.PERMISSION_GRANTED) {
// Access not allowed!
if (mOrigResolveList == currentResolveList) {
mOrigResolveList = new ArrayList(mOrigResolveList);
}
currentResolveList.remove(i);
}
}
}
}
int N;
if ((currentResolveList != null) && ((N = currentResolveList.size()) > 0)) {
// Only display the first matches that are either of equal
// priority or have asked to be default options.
ResolveInfo r0 = currentResolveList.get(0);
for (int i=1; i(mOrigResolveList);
}
currentResolveList.remove(i);
N--;
}
}
}
if (N > 1) {
ResolveInfo.DisplayNameComparator rComparator =
new ResolveInfo.DisplayNameComparator(mPm);
Collections.sort(currentResolveList, rComparator);
}
// First put the initial items at the top.
if (mInitialIntents != null) {
for (int i=0; i rList, int start, int end, ResolveInfo ro,
CharSequence roLabel) {
// Process labels from start to i
int num = end - start+1;
if (num == 1) {
if (mLastChosen != null
&& mLastChosen.activityInfo.packageName.equals(
ro.activityInfo.packageName)
&& mLastChosen.activityInfo.name.equals(ro.activityInfo.name)) {
mInitialHighlight = mList.size();
}
// No duplicate labels. Use label for entry at start
mList.add(new DisplayResolveInfo(ro, roLabel, null, null));
} else {
mShowExtended = true;
boolean usePkg = false;
CharSequence startApp = ro.activityInfo.applicationInfo.loadLabel(mPm);
if (startApp == null) {
usePkg = true;
}
if (!usePkg) {
// Use HashSet to track duplicates
HashSet duplicates =
new HashSet();
duplicates.add(startApp);
for (int j = start+1; j <= end ; j++) {
ResolveInfo jRi = rList.get(j);
CharSequence jApp = jRi.activityInfo.applicationInfo.loadLabel(mPm);
if ( (jApp == null) || (duplicates.contains(jApp))) {
usePkg = true;
break;
} else {
duplicates.add(jApp);
}
}
// Clear HashSet for later use
duplicates.clear();
}
for (int k = start; k <= end; k++) {
ResolveInfo add = rList.get(k);
if (mLastChosen != null
&& mLastChosen.activityInfo.packageName.equals(
add.activityInfo.packageName)
&& mLastChosen.activityInfo.name.equals(add.activityInfo.name)) {
mInitialHighlight = mList.size();
}
if (usePkg) {
// Use application name for all entries from start to end-1
mList.add(new DisplayResolveInfo(add, roLabel,
add.activityInfo.packageName, null));
} else {
// Use package name for all entries from start to end-1
mList.add(new DisplayResolveInfo(add, roLabel,
add.activityInfo.applicationInfo.loadLabel(mPm), null));
}
}
}
}
public ResolveInfo resolveInfoForPosition(int position) {
return mList.get(position).ri;
}
public Intent intentForPosition(int position) {
DisplayResolveInfo dri = mList.get(position);
Intent intent = new Intent(dri.origIntent != null
? dri.origIntent : mIntent);
intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT
|Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP);
ActivityInfo ai = dri.ri.activityInfo;
intent.setComponent(new ComponentName(
ai.applicationInfo.packageName, ai.name));
return intent;
}
public int getCount() {
return mList.size();
}
public Object getItem(int position) {
return mList.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View view;
if (convertView == null) {
view = mInflater.inflate(
com.android.internal.R.layout.resolve_list_item, parent, false);
final ViewHolder holder = new ViewHolder(view);
view.setTag(holder);
// Fix the icon size even if we have different sized resources
ViewGroup.LayoutParams lp = holder.icon.getLayoutParams();
lp.width = lp.height = mIconSize;
} else {
view = convertView;
}
bindView(view, mList.get(position));
return view;
}
private final void bindView(View view, DisplayResolveInfo info) {
final ViewHolder holder = (ViewHolder) view.getTag();
holder.text.setText(info.displayLabel);
if (mShowExtended) {
holder.text2.setVisibility(View.VISIBLE);
holder.text2.setText(info.extendedInfo);
} else {
holder.text2.setVisibility(View.GONE);
}
if (info.displayIcon == null) {
new LoadIconTask().execute(info);
}
holder.icon.setImageDrawable(info.displayIcon);
}
}
static class ViewHolder {
public TextView text;
public TextView text2;
public ImageView icon;
public ViewHolder(View view) {
text = (TextView) view.findViewById(com.android.internal.R.id.text1);
text2 = (TextView) view.findViewById(com.android.internal.R.id.text2);
icon = (ImageView) view.findViewById(R.id.icon);
}
}
class ItemLongClickListener implements AdapterView.OnItemLongClickListener {
@Override
public boolean onItemLongClick(AdapterView parent, View view, int position, long id) {
ResolveInfo ri = mAdapter.resolveInfoForPosition(position);
showAppDetails(ri);
return true;
}
}
class LoadIconTask extends AsyncTask {
@Override
protected DisplayResolveInfo doInBackground(DisplayResolveInfo... params) {
final DisplayResolveInfo info = params[0];
if (info.displayIcon == null) {
info.displayIcon = loadIconForResolveInfo(info.ri);
}
return info;
}
@Override
protected void onPostExecute(DisplayResolveInfo info) {
mAdapter.notifyDataSetChanged();
}
}
}
