Files
frameworks_base/services/java/com/android/server/am/CompatModePackages.java
Dianne Hackborn 2f0b17573d Fix issue #4502672: Wrong xml resources used for homescreen widgets.
There was a race in the system process between applying the initial
configuration and executing code in higher-level system services
like the app widget service that relies on the config.  For some
reason it starting showing up more after my code changes; it should
now be completely fixed.

Also fix the activity starting window to run in compatibility mode
if its application is going to be in compatibility mode.

And some various cleanup and small fixes.

Change-Id: I0566933bf1bbb4259c1d99a60c0a3c19af1542e5
2011-05-31 18:04:14 -07:00

406 lines
15 KiB
Java

package com.android.server.am;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import com.android.internal.os.AtomicFile;
import com.android.internal.util.FastXmlSerializer;
import android.app.ActivityManager;
import android.app.AppGlobals;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageManager;
import android.content.res.CompatibilityInfo;
import android.os.Handler;
import android.os.Message;
import android.os.RemoteException;
import android.util.Slog;
import android.util.Xml;
public class CompatModePackages {
private final String TAG = ActivityManagerService.TAG;
private final boolean DEBUG_CONFIGURATION = ActivityManagerService.DEBUG_CONFIGURATION;
private final ActivityManagerService mService;
private final AtomicFile mFile;
// Compatibility state: no longer ask user to select the mode.
public static final int COMPAT_FLAG_DONT_ASK = 1<<0;
// Compatibility state: compatibility mode is enabled.
public static final int COMPAT_FLAG_ENABLED = 1<<1;
private final HashMap<String, Integer> mPackages = new HashMap<String, Integer>();
private static final int MSG_WRITE = 1;
private final Handler mHandler = new Handler() {
@Override public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_WRITE:
saveCompatModes();
break;
default:
super.handleMessage(msg);
break;
}
}
};
public CompatModePackages(ActivityManagerService service, File systemDir) {
mService = service;
mFile = new AtomicFile(new File(systemDir, "packages-compat.xml"));
FileInputStream fis = null;
try {
fis = mFile.openRead();
XmlPullParser parser = Xml.newPullParser();
parser.setInput(fis, null);
int eventType = parser.getEventType();
while (eventType != XmlPullParser.START_TAG) {
eventType = parser.next();
}
String tagName = parser.getName();
if ("compat-packages".equals(tagName)) {
eventType = parser.next();
do {
if (eventType == XmlPullParser.START_TAG) {
tagName = parser.getName();
if (parser.getDepth() == 2) {
if ("pkg".equals(tagName)) {
String pkg = parser.getAttributeValue(null, "name");
if (pkg != null) {
String mode = parser.getAttributeValue(null, "mode");
int modeInt = 0;
if (mode != null) {
try {
modeInt = Integer.parseInt(mode);
} catch (NumberFormatException e) {
}
}
mPackages.put(pkg, modeInt);
}
}
}
}
eventType = parser.next();
} while (eventType != XmlPullParser.END_DOCUMENT);
}
} catch (XmlPullParserException e) {
Slog.w(TAG, "Error reading compat-packages", e);
} catch (java.io.IOException e) {
if (fis != null) Slog.w(TAG, "Error reading compat-packages", e);
} finally {
if (fis != null) {
try {
fis.close();
} catch (java.io.IOException e1) {
}
}
}
}
public HashMap<String, Integer> getPackages() {
return mPackages;
}
private int getPackageFlags(String packageName) {
Integer flags = mPackages.get(packageName);
return flags != null ? flags : 0;
}
public void handlePackageAddedLocked(String packageName, boolean updated) {
ApplicationInfo ai = null;
try {
ai = AppGlobals.getPackageManager().getApplicationInfo(packageName, 0);
} catch (RemoteException e) {
}
if (ai == null) {
return;
}
CompatibilityInfo ci = compatibilityInfoForPackageLocked(ai);
final boolean mayCompat = !ci.alwaysSupportsScreen()
&& !ci.neverSupportsScreen();
if (!updated) {
// First time -- if the app may run in compat mode, enable that
// by default.
if (mayCompat) {
setPackageScreenCompatModeLocked(ai, ActivityManager.COMPAT_MODE_ENABLED);
}
} else {
// Update -- if the app no longer can run in compat mode, clear
// any current settings for it.
if (!mayCompat && mPackages.containsKey(packageName)) {
mPackages.remove(packageName);
mHandler.removeMessages(MSG_WRITE);
Message msg = mHandler.obtainMessage(MSG_WRITE);
mHandler.sendMessageDelayed(msg, 10000);
}
}
}
public CompatibilityInfo compatibilityInfoForPackageLocked(ApplicationInfo ai) {
CompatibilityInfo ci = new CompatibilityInfo(ai, mService.mConfiguration.screenLayout,
mService.mConfiguration.smallestScreenWidthDp,
(getPackageFlags(ai.packageName)&COMPAT_FLAG_ENABLED) != 0);
//Slog.i(TAG, "*********** COMPAT FOR PKG " + ai.packageName + ": " + ci);
return ci;
}
public int computeCompatModeLocked(ApplicationInfo ai) {
boolean enabled = (getPackageFlags(ai.packageName)&COMPAT_FLAG_ENABLED) != 0;
CompatibilityInfo info = new CompatibilityInfo(ai,
mService.mConfiguration.screenLayout,
mService.mConfiguration.smallestScreenWidthDp, enabled);
if (info.alwaysSupportsScreen()) {
return ActivityManager.COMPAT_MODE_NEVER;
}
if (info.neverSupportsScreen()) {
return ActivityManager.COMPAT_MODE_ALWAYS;
}
return enabled ? ActivityManager.COMPAT_MODE_ENABLED
: ActivityManager.COMPAT_MODE_DISABLED;
}
public boolean getFrontActivityAskCompatModeLocked() {
ActivityRecord r = mService.mMainStack.topRunningActivityLocked(null);
if (r == null) {
return false;
}
return getPackageAskCompatModeLocked(r.packageName);
}
public boolean getPackageAskCompatModeLocked(String packageName) {
return (getPackageFlags(packageName)&COMPAT_FLAG_DONT_ASK) == 0;
}
public void setFrontActivityAskCompatModeLocked(boolean ask) {
ActivityRecord r = mService.mMainStack.topRunningActivityLocked(null);
if (r != null) {
setPackageAskCompatModeLocked(r.packageName, ask);
}
}
public void setPackageAskCompatModeLocked(String packageName, boolean ask) {
int curFlags = getPackageFlags(packageName);
int newFlags = ask ? (curFlags&~COMPAT_FLAG_DONT_ASK) : (curFlags|COMPAT_FLAG_DONT_ASK);
if (curFlags != newFlags) {
if (newFlags != 0) {
mPackages.put(packageName, newFlags);
} else {
mPackages.remove(packageName);
}
mHandler.removeMessages(MSG_WRITE);
Message msg = mHandler.obtainMessage(MSG_WRITE);
mHandler.sendMessageDelayed(msg, 10000);
}
}
public int getFrontActivityScreenCompatModeLocked() {
ActivityRecord r = mService.mMainStack.topRunningActivityLocked(null);
if (r == null) {
return ActivityManager.COMPAT_MODE_UNKNOWN;
}
return computeCompatModeLocked(r.info.applicationInfo);
}
public void setFrontActivityScreenCompatModeLocked(int mode) {
ActivityRecord r = mService.mMainStack.topRunningActivityLocked(null);
if (r == null) {
Slog.w(TAG, "setFrontActivityScreenCompatMode failed: no top activity");
return;
}
setPackageScreenCompatModeLocked(r.info.applicationInfo, mode);
}
public int getPackageScreenCompatModeLocked(String packageName) {
ApplicationInfo ai = null;
try {
ai = AppGlobals.getPackageManager().getApplicationInfo(packageName, 0);
} catch (RemoteException e) {
}
if (ai == null) {
return ActivityManager.COMPAT_MODE_UNKNOWN;
}
return computeCompatModeLocked(ai);
}
public void setPackageScreenCompatModeLocked(String packageName, int mode) {
ApplicationInfo ai = null;
try {
ai = AppGlobals.getPackageManager().getApplicationInfo(packageName, 0);
} catch (RemoteException e) {
}
if (ai == null) {
Slog.w(TAG, "setPackageScreenCompatMode failed: unknown package " + packageName);
return;
}
setPackageScreenCompatModeLocked(ai, mode);
}
private void setPackageScreenCompatModeLocked(ApplicationInfo ai, int mode) {
final String packageName = ai.packageName;
int curFlags = getPackageFlags(packageName);
boolean enable;
switch (mode) {
case ActivityManager.COMPAT_MODE_DISABLED:
enable = false;
break;
case ActivityManager.COMPAT_MODE_ENABLED:
enable = true;
break;
case ActivityManager.COMPAT_MODE_TOGGLE:
enable = (curFlags&COMPAT_FLAG_ENABLED) == 0;
break;
default:
Slog.w(TAG, "Unknown screen compat mode req #" + mode + "; ignoring");
return;
}
int newFlags = curFlags;
if (enable) {
newFlags |= COMPAT_FLAG_ENABLED;
} else {
newFlags &= ~COMPAT_FLAG_ENABLED;
}
CompatibilityInfo ci = compatibilityInfoForPackageLocked(ai);
if (ci.alwaysSupportsScreen()) {
Slog.w(TAG, "Ignoring compat mode change of " + packageName
+ "; compatibility never needed");
newFlags = 0;
}
if (ci.neverSupportsScreen()) {
Slog.w(TAG, "Ignoring compat mode change of " + packageName
+ "; compatibility always needed");
newFlags = 0;
}
if (newFlags != curFlags) {
if (newFlags != 0) {
mPackages.put(packageName, newFlags);
} else {
mPackages.remove(packageName);
}
// Need to get compatibility info in new state.
ci = compatibilityInfoForPackageLocked(ai);
mHandler.removeMessages(MSG_WRITE);
Message msg = mHandler.obtainMessage(MSG_WRITE);
mHandler.sendMessageDelayed(msg, 10000);
ActivityRecord starting = mService.mMainStack.topRunningActivityLocked(null);
// All activities that came from the package must be
// restarted as if there was a config change.
for (int i=mService.mMainStack.mHistory.size()-1; i>=0; i--) {
ActivityRecord a = (ActivityRecord)mService.mMainStack.mHistory.get(i);
if (a.info.packageName.equals(packageName)) {
a.forceNewConfig = true;
if (starting != null && a == starting && a.visible) {
a.startFreezingScreenLocked(starting.app,
ActivityInfo.CONFIG_SCREEN_LAYOUT);
}
}
}
// Tell all processes that loaded this package about the change.
for (int i=mService.mLruProcesses.size()-1; i>=0; i--) {
ProcessRecord app = mService.mLruProcesses.get(i);
if (!app.pkgList.contains(packageName)) {
continue;
}
try {
if (app.thread != null) {
if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending to proc "
+ app.processName + " new compat " + ci);
app.thread.updatePackageCompatibilityInfo(packageName, ci);
}
} catch (Exception e) {
}
}
if (starting != null) {
mService.mMainStack.ensureActivityConfigurationLocked(starting, 0);
// And we need to make sure at this point that all other activities
// are made visible with the correct configuration.
mService.mMainStack.ensureActivitiesVisibleLocked(starting, 0);
}
}
}
void saveCompatModes() {
HashMap<String, Integer> pkgs;
synchronized (mService) {
pkgs = new HashMap<String, Integer>(mPackages);
}
FileOutputStream fos = null;
try {
fos = mFile.startWrite();
XmlSerializer out = new FastXmlSerializer();
out.setOutput(fos, "utf-8");
out.startDocument(null, true);
out.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true);
out.startTag(null, "compat-packages");
final IPackageManager pm = AppGlobals.getPackageManager();
final int screenLayout = mService.mConfiguration.screenLayout;
final int smallestScreenWidthDp = mService.mConfiguration.smallestScreenWidthDp;
final Iterator<Map.Entry<String, Integer>> it = pkgs.entrySet().iterator();
while (it.hasNext()) {
Map.Entry<String, Integer> entry = it.next();
String pkg = entry.getKey();
int mode = entry.getValue();
if (mode == 0) {
continue;
}
ApplicationInfo ai = null;
try {
ai = pm.getApplicationInfo(pkg, 0);
} catch (RemoteException e) {
}
if (ai == null) {
continue;
}
CompatibilityInfo info = new CompatibilityInfo(ai, screenLayout,
smallestScreenWidthDp, false);
if (info.alwaysSupportsScreen()) {
continue;
}
if (info.neverSupportsScreen()) {
continue;
}
out.startTag(null, "pkg");
out.attribute(null, "name", pkg);
out.attribute(null, "mode", Integer.toString(mode));
out.endTag(null, "pkg");
}
out.endTag(null, "compat-packages");
out.endDocument();
mFile.finishWrite(fos);
} catch (java.io.IOException e1) {
Slog.w(TAG, "Error writing compat packages", e1);
if (fos != null) {
mFile.failWrite(fos);
}
}
}
}