First commit

app/src/main/java/com/android/launcher2/PackageChangedReceiver.java

@@ -0,0 +1,19 @@
+package com.android.launcher2;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+public class PackageChangedReceiver extends BroadcastReceiver {
+    @Override
+    public void onReceive(final Context context, Intent intent) {
+        final String packageName = intent.getData().getSchemeSpecificPart();
+
+        if (packageName == null || packageName.length() == 0) {
+            // they sent us a bad intent
+            return;
+        }
+        LauncherApplication app = (LauncherApplication) context.getApplicationContext();
+        WidgetPreviewLoader.removeFromDb(app.getWidgetPreviewCacheDb(), packageName);
+    }
+}