implement basic view animations

AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.fox.ttrss"
-      android:versionCode="6"
+      android:versionCode="7"
-      android:versionName="0.1.5">
+      android:versionName="0.1.6">
     <uses-sdk android:minSdkVersion="8" />
     <!-- <supports-screens android:smallScreens="false" android:normalScreens="false" /> -->
 

res/anim/slide_left.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2007 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.
+-->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator">
+    <translate android:fromXDelta="100%p" android:toXDelta="0"
+        android:duration="@android:integer/config_shortAnimTime" />
+</set>

res/anim/slide_right.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2007 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.
+-->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator">
+    <translate android:fromXDelta="-100%p" android:toXDelta="0"
+            android:duration="@android:integer/config_shortAnimTime" />
+</set>

src/org/fox/ttrss/MainActivity.java

@@ -18,6 +18,7 @@ import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.animation.AnimationUtils;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
@@ -253,8 +254,11 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
         	
         	if (m_smallScreenMode) {
         		if (m_selectedArticle != null) {
+        			findViewById(R.id.main).setAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_right));
         			closeArticle();
         		} else if (m_activeFeed != null) {
+        			findViewById(R.id.main).setAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_right));
+        			
         			findViewById(R.id.headlines_fragment).setVisibility(View.GONE);
         			findViewById(R.id.feeds_fragment).setVisibility(View.VISIBLE);
         			
@@ -524,6 +528,8 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 		ft.commit();
 		
 		if (m_smallScreenMode) {
+			findViewById(R.id.main).setAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_left));
+			
 			findViewById(R.id.headlines_fragment).setVisibility(View.GONE);
 			findViewById(R.id.article_fragment).setVisibility(View.VISIBLE);
 		} else {