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Homescreen migration from a larger grid to a smaller grid.

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Adding support for restoring from a larger device, if the grid size
difference is not more that 1.
During restore add all the items in the DB, and run a one-time migration
the next time launcher starts.

The migration strategy is defined in ShrinkWorkspaceTask.java which involves
resizing, moving and removing some items.

Change-Id: I6ee411f6db5bf0152b527e16146a88c56dec2d97
This commit is contained in:
Sunny Goyal
2015-07-27 14:36:07 -07:00
parent e40e77b34f
commit e5bb705fb7
8 changed files with 848 additions and 21 deletions
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22
src/com/android/launcher3/LauncherModel.java
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@@ -27,6 +27,7 @@ import android.content.Context;
import android.content.Intent;
import android.content.Intent.ShortcutIconResource;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.content.pm.ProviderInfo;
import android.content.pm.ResolveInfo;
@@ -55,6 +56,7 @@ import com.android.launcher3.compat.PackageInstallerCompat;
import com.android.launcher3.compat.PackageInstallerCompat.PackageInstallInfo;
import com.android.launcher3.compat.UserHandleCompat;
import com.android.launcher3.compat.UserManagerCompat;
import com.android.launcher3.model.MigrateFromRestoreTask;
import com.android.launcher3.model.WidgetsModel;
import com.android.launcher3.util.ComponentKey;
import com.android.launcher3.util.CursorIconInfo;
@@ -1133,7 +1135,7 @@ public class LauncherModel extends BroadcastReceiver
* Update the order of the workspace screens in the database. The array list contains
* a list of screen ids in the order that they should appear.
*/
void updateWorkspaceScreenOrder(Context context, final ArrayList<Long> screens) {
public void updateWorkspaceScreenOrder(Context context, final ArrayList<Long> screens) {
final ArrayList<Long> screensCopy = new ArrayList<Long>(screens);
final ContentResolver cr = context.getContentResolver();
final Uri uri = LauncherSettings.WorkspaceScreens.CONTENT_URI;
@@ -1411,7 +1413,7 @@ public class LauncherModel extends BroadcastReceiver
/**
* Loads the workspace screen ids in an ordered list.
*/
@Thunk static ArrayList<Long> loadWorkspaceScreensDb(Context context) {
public static ArrayList<Long> loadWorkspaceScreensDb(Context context) {
final ContentResolver contentResolver = context.getContentResolver();
final Uri screensUri = LauncherSettings.WorkspaceScreens.CONTENT_URI;
@@ -1757,6 +1759,22 @@ public class LauncherModel extends BroadcastReceiver
int countX = (int) profile.numColumns;
int countY = (int) profile.numRows;
if (MigrateFromRestoreTask.shouldRunTask(mContext)) {
try {
MigrateFromRestoreTask task = new MigrateFromRestoreTask(mContext);
// Clear the flags before starting the task, so that we do not run the task
// again, in case there was an uncaught error.
MigrateFromRestoreTask.clearFlags(mContext);
task.execute();
} catch (Exception e) {
Log.e(TAG, "Error during grid migration", e);
// Clear workspace.
mFlags = mFlags | LOADER_FLAG_CLEAR_WORKSPACE;
}
}
if ((mFlags & LOADER_FLAG_CLEAR_WORKSPACE) != 0) {
Launcher.addDumpLog(TAG, "loadWorkspace: resetting launcher database", true);
LauncherAppState.getLauncherProvider().deleteDatabase();