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Properly configure live wallpaper selection following restore

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Bug 31023198

Change-Id: I79d766f201684e109b6322cc36f9e7bcc1b21483
This commit is contained in:
Christopher Tate
2016-08-24 16:23:20 -07:00
parent e9c519e049
commit 2471a3724f
1 changed files with 61 additions and 1 deletions
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62
packages/WallpaperBackup/src/com/android/wallpaperbackup/WallpaperBackupAgent.java
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@@ -19,17 +19,22 @@ package com.android.wallpaperbackup;
import static android.app.WallpaperManager.FLAG_LOCK;
import static android.app.WallpaperManager.FLAG_SYSTEM;
import android.app.AppGlobals;
import android.app.WallpaperManager;
import android.app.backup.BackupAgent;
import android.app.backup.BackupDataInput;
import android.app.backup.BackupDataOutput;
import android.app.backup.FullBackupDataOutput;
import android.content.ComponentName;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.IPackageManager;
import android.content.pm.PackageInfo;
import android.graphics.Rect;
import android.os.Environment;
import android.os.FileUtils;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.Slog;
import android.util.Xml;
@@ -217,6 +222,19 @@ public class WallpaperBackupAgent extends BackupAgent {
// wallpaper image present.
restoreFromStage(imageStage, infoStage, "wp", sysWhich);
restoreFromStage(lockImageStage, infoStage, "kwp", FLAG_LOCK);
// And reset to the wallpaper service we should be using
ComponentName wpService = parseWallpaperComponent(infoStage, "wp");
if (servicePackageExists(wpService)) {
if (DEBUG) {
Slog.i(TAG, "Using wallpaper service " + wpService);
}
mWm.setWallpaperComponent(wpService, UserHandle.USER_SYSTEM);
} else {
if (DEBUG) {
Slog.v(TAG, "Can't use wallpaper service " + wpService);
}
}
} catch (Exception e) {
Slog.e(TAG, "Unable to restore wallpaper: " + e.getMessage());
} finally {
@@ -274,18 +292,60 @@ public class WallpaperBackupAgent extends BackupAgent {
} while (type != XmlPullParser.END_DOCUMENT);
} catch (Exception e) {
// Whoops; can't process the info file at all. Report failure.
Slog.w(TAG, "Failed to parse restored metadata: " + e.getMessage());
Slog.w(TAG, "Failed to parse restored crop: " + e.getMessage());
return null;
}
return cropHint;
}
private ComponentName parseWallpaperComponent(File wallpaperInfo, String sectionTag) {
ComponentName name = null;
try (FileInputStream stream = new FileInputStream(wallpaperInfo)) {
final XmlPullParser parser = Xml.newPullParser();
parser.setInput(stream, StandardCharsets.UTF_8.name());
int type;
do {
type = parser.next();
if (type == XmlPullParser.START_TAG) {
String tag = parser.getName();
if (sectionTag.equals(tag)) {
final String parsedName = parser.getAttributeValue(null, "component");
name = (parsedName != null)
? ComponentName.unflattenFromString(parsedName)
: null;
break;
}
}
} while (type != XmlPullParser.END_DOCUMENT);
} catch (Exception e) {
// Whoops; can't process the info file at all. Report failure.
Slog.w(TAG, "Failed to parse restored component: " + e.getMessage());
return null;
}
return name;
}
private int getAttributeInt(XmlPullParser parser, String name, int defValue) {
final String value = parser.getAttributeValue(null, name);
return (value == null) ? defValue : Integer.parseInt(value);
}
private boolean servicePackageExists(ComponentName comp) {
try {
if (comp != null) {
final IPackageManager pm = AppGlobals.getPackageManager();
final PackageInfo info = pm.getPackageInfo(comp.getPackageName(),
0, UserHandle.USER_SYSTEM);
return (info != null);
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to contact package manager");
}
return false;
}
//
// Key/value API: abstract, therefore required; but not used
//