From 3330e415f17012e42ba6c1a2e2df5dd6392f3af7 Mon Sep 17 00:00:00 2001
From: Dianne Hackborn <hackbod@google.com>
Date: Thu, 19 Apr 2012 18:00:56 -0700
Subject: Implement issue #4499996: LiveWallpaperPreview activity intent filter

Change-Id: If717ce64157356e470b198fb74ff8bab96d3f4ba
---
 .../wallpaper/livepicker/LiveWallpaperChange.java  | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 src/com/android/wallpaper/livepicker/LiveWallpaperChange.java

(limited to 'src/com/android')

diff --git a/src/com/android/wallpaper/livepicker/LiveWallpaperChange.java b/src/com/android/wallpaper/livepicker/LiveWallpaperChange.java
new file mode 100644
index 0000000..dc03174
--- /dev/null
+++ b/src/com/android/wallpaper/livepicker/LiveWallpaperChange.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.wallpaper.livepicker;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.xmlpull.v1.XmlPullParserException;
+
+import android.app.Activity;
+import android.app.WallpaperInfo;
+import android.app.WallpaperManager;
+import android.os.Bundle;
+import android.os.Parcelable;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.service.wallpaper.WallpaperService;
+import android.util.Log;
+
+public class LiveWallpaperChange extends Activity {
+    private static final String TAG = "CHANGE_LIVE_WALLPAPER";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Parcelable obj = getIntent().getParcelableExtra(
+                WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT);
+        if (obj == null || !(obj instanceof ComponentName)) {
+            Log.w(TAG, "No LIVE_WALLPAPER_COMPONENT extra supplied");
+            finish();
+            return;
+        }
+
+        ComponentName comp = (ComponentName)obj;
+
+        // Get the information about this component.  Implemented this way
+        // to not allow us to direct the caller to a service that is not a
+        // live wallpaper.
+        Intent queryIntent = new Intent(WallpaperService.SERVICE_INTERFACE);
+        queryIntent.setPackage(comp.getPackageName());
+        List<ResolveInfo> list = getPackageManager().queryIntentServices(
+                queryIntent, PackageManager.GET_META_DATA);
+        if (list != null) {
+            for (int i=0; i<list.size(); i++) {
+                ResolveInfo ri = list.get(i);
+                if (ri.serviceInfo.name.equals(comp.getClassName())) {
+                    WallpaperInfo info = null;
+                    try {
+                        info = new WallpaperInfo(this, ri);
+                    } catch (XmlPullParserException e) {
+                        Log.w(TAG, "Bad wallpaper " + ri.serviceInfo, e);
+                        finish();
+                        return;
+                    } catch (IOException e) {
+                        Log.w(TAG, "Bad wallpaper " + ri.serviceInfo, e);
+                        finish();
+                        return;
+                    }
+                    Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE);
+                    intent.setClassName(info.getPackageName(), info.getServiceName());
+                    LiveWallpaperPreview.showPreview(this, 0, intent, info);
+                    finish();
+                    return;
+                }
+            }
+        }
+
+        Log.w(TAG, "Not a live wallpaper: " + comp);
+        finish();
+    }
+}
-- 
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