import android.util.Slog;
import android.util.Xml;
+import libcore.io.IoUtils;
+
import org.xmlpull.v1.XmlPullParser;
import java.io.File;
final boolean sysChanged = (sysGeneration != lastSysGeneration);
final boolean lockChanged = (lockGeneration != lastLockGeneration);
+ // There might be a latent lock wallpaper file present but unused: don't
+ // include it in the backup if that's the case.
+ ParcelFileDescriptor lockFd = mWm.getWallpaperFile(FLAG_LOCK, UserHandle.USER_SYSTEM);
+ final boolean hasLockWallpaper = (lockFd != null);
+ IoUtils.closeQuietly(lockFd);
+
if (DEBUG) {
Slog.v(TAG, "sysGen=" + sysGeneration + " : sysChanged=" + sysChanged);
Slog.v(TAG, "lockGen=" + lockGeneration + " : lockChanged=" + lockChanged);
+ Slog.v(TAG, "hasLockWallpaper=" + hasLockWallpaper);
}
if (mWallpaperInfo.exists()) {
if (sysChanged || lockChanged || !infoStage.exists()) {
}
// Don't try to store the lock image if we overran our quota last time
- if (mLockWallpaperFile.exists() && !mQuotaExceeded) {
+ if (hasLockWallpaper && mLockWallpaperFile.exists() && !mQuotaExceeded) {
if (lockChanged || !lockImageStage.exists()) {
if (DEBUG) Slog.v(TAG, "New lock wallpaper; copying");
FileUtils.copyFileOrThrow(mLockWallpaperFile, lockImageStage);
final File imageStage = new File (filesDir, IMAGE_STAGE);
final File lockImageStage = new File (filesDir, LOCK_IMAGE_STAGE);
+ // If we restored separate lock imagery, the system wallpaper should be
+ // applied as system-only; but if there's no separate lock image, make
+ // sure to apply the restored system wallpaper as both.
+ final int sysWhich = FLAG_SYSTEM | (lockImageStage.exists() ? 0 : FLAG_LOCK);
+
try {
// First off, revert to the factory state
- mWm.clear(WallpaperManager.FLAG_SYSTEM | WallpaperManager.FLAG_LOCK);
+ mWm.clear(FLAG_SYSTEM | FLAG_LOCK);
// It is valid for the imagery to be absent; it means that we were not permitted
// to back up the original image on the source device, or there was no user-supplied
// wallpaper image present.
- restoreFromStage(imageStage, infoStage, "wp", WallpaperManager.FLAG_SYSTEM);
- restoreFromStage(lockImageStage, infoStage, "kwp", WallpaperManager.FLAG_LOCK);
+ restoreFromStage(imageStage, infoStage, "wp", sysWhich);
+ restoreFromStage(lockImageStage, infoStage, "kwp", FLAG_LOCK);
} catch (Exception e) {
Slog.e(TAG, "Unable to restore wallpaper: " + e.getMessage());
} finally {