Merge "First commit for SlidingFragment."

21 files changed, 740 insertions, 0 deletions

diff --git a/samples/devbytes/animation/SlidingFragments/AndroidManifest.xml b/samples/devbytes/animation/SlidingFragments/AndroidManifest.xml
new file mode 100644
index 000000000..2e71b6c9c
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/AndroidManifest.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- Copyright (C) 2013 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.example.android.slidingfragments"
+          android:versionCode="1"
+          android:versionName="1.0">
+    <uses-sdk android:minSdkVersion="14"
+              android:targetSdkVersion="17"/>
+    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
+        <activity android:name=".SlidingFragments"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
diff --git a/samples/devbytes/animation/SlidingFragments/res/animator/slide_fragment_in.xml b/samples/devbytes/animation/SlidingFragments/res/animator/slide_fragment_in.xml
new file mode 100644
index 000000000..7fe333b6d
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/animator/slide_fragment_in.xml
@@ -0,0 +1,22 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:valueFrom="0"
+    android:valueTo="@dimen/slide_up_down_fraction"
+    android:propertyName="yFraction"
+    android:valueType="floatType"
+    android:duration="@integer/slide_up_down_duration">
+</objectAnimator>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/animator/slide_fragment_out.xml b/samples/devbytes/animation/SlidingFragments/res/animator/slide_fragment_out.xml
new file mode 100644
index 000000000..4d4134a32
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/animator/slide_fragment_out.xml
@@ -0,0 +1,22 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:valueFrom="@dimen/slide_up_down_fraction"
+    android:valueTo="0"
+    android:propertyName="yFraction"
+    android:valueType="floatType"
+    android:duration="@integer/slide_up_down_duration" >
+</objectAnimator>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/drawable-hdpi/golden_gate.jpg b/samples/devbytes/animation/SlidingFragments/res/drawable-hdpi/golden_gate.jpg
new file mode 100644
index 000000000..9a3d3fd7b
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/drawable-hdpi/golden_gate.jpg
diff --git a/samples/devbytes/animation/SlidingFragments/res/drawable-hdpi/ic_launcher.png b/samples/devbytes/animation/SlidingFragments/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 000000000..96a442e5b
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/drawable-hdpi/ic_launcher.png
diff --git a/samples/devbytes/animation/SlidingFragments/res/drawable-ldpi/ic_launcher.png b/samples/devbytes/animation/SlidingFragments/res/drawable-ldpi/ic_launcher.png
new file mode 100644
index 000000000..99238729d
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/drawable-ldpi/ic_launcher.png
diff --git a/samples/devbytes/animation/SlidingFragments/res/drawable-mdpi/ic_launcher.png b/samples/devbytes/animation/SlidingFragments/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 000000000..359047dfa
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/drawable-mdpi/ic_launcher.png
diff --git a/samples/devbytes/animation/SlidingFragments/res/drawable-xhdpi/ic_launcher.png b/samples/devbytes/animation/SlidingFragments/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 000000000..71c6d760f
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/drawable-xhdpi/ic_launcher.png
diff --git a/samples/devbytes/animation/SlidingFragments/res/layout/image_fragment.xml b/samples/devbytes/animation/SlidingFragments/res/layout/image_fragment.xml
new file mode 100644
index 000000000..eb555fea4
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/layout/image_fragment.xml
@@ -0,0 +1,20 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:src="@drawable/golden_gate" >
+</ImageView>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/layout/sliding_fragments_layout.xml b/samples/devbytes/animation/SlidingFragments/res/layout/sliding_fragments_layout.xml
new file mode 100644
index 000000000..a789a77c7
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/layout/sliding_fragments_layout.xml
@@ -0,0 +1,31 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:id="@+id/move_to_back_container">
+
+    <fragment class="com.example.android.slidingfragments.ImageFragment"
+        android:id="@+id/move_fragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+    <View android:id="@+id/dark_hover_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/black" />
+
+</FrameLayout>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/layout/text_fragment.xml b/samples/devbytes/animation/SlidingFragments/res/layout/text_fragment.xml
new file mode 100644
index 000000000..652acaa7f
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/layout/text_fragment.xml
@@ -0,0 +1,104 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<com.example.android.slidingfragments.FractionalLinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_marginLeft="@dimen/slide_fragment_horizontal_margin"
+    android:layout_marginRight="@dimen/slide_fragment_horizontal_margin"
+    android:orientation="vertical"
+    android:background="@color/white">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/bridge"
+        android:textColor="#000000"
+        android:textStyle="bold"
+        android:textSize="26sp"
+        android:layout_marginBottom="@dimen/text_vertical_margin"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/summary"
+        android:textSize="18sp"
+        android:textColor="#000000"
+        android:layout_marginBottom="@dimen/text_vertical_margin"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/length"
+        android:textColor="#000000"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/span"
+        android:textColor="#000000"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/construction"
+        android:textColor="#000000"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/height"
+        android:textColor="#000000"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/elevation"
+        android:textColor="#000000"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/address"
+        android:textColor="#000000"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/photo_credits"
+        android:textColor="#000000"
+        android:textSize="10sp"
+        android:layout_marginTop="@dimen/text_vertical_margin"
+        android:layout_marginLeft="@dimen/text_horizontal_margin"
+        android:layout_marginRight="@dimen/text_horizontal_margin" />
+
+</com.example.android.slidingfragments.FractionalLinearLayout>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/values/colors.xml b/samples/devbytes/animation/SlidingFragments/res/values/colors.xml
new file mode 100644
index 000000000..f5eb07aad
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/values/colors.xml
@@ -0,0 +1,23 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<resources>
+
+    <color name="red">#ff0000</color>
+    <color name="black">#000000</color>
+    <color name="white">#ffffff</color>
+    <color name="green">#00ff00</color>
+
+</resources>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/values/dimens.xml b/samples/devbytes/animation/SlidingFragments/res/values/dimens.xml
new file mode 100644
index 000000000..2b378c132
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/values/dimens.xml
@@ -0,0 +1,22 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<resources>
+
+    <dimen name="slide_fragment_horizontal_margin">50dp</dimen>
+    <dimen name="text_vertical_margin">18dp</dimen>
+    <dimen name="text_horizontal_margin">10dp</dimen>
+
+</resources>
diff --git a/samples/devbytes/animation/SlidingFragments/res/values/integers.xml b/samples/devbytes/animation/SlidingFragments/res/values/integers.xml
new file mode 100644
index 000000000..57c19acdd
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/values/integers.xml
@@ -0,0 +1,22 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<resources>
+
+    <integer name="slide_up_down_duration">200</integer>
+    <integer name="half_slide_up_down_duration">150</integer>
+    <integer name="slide_up_down_final_value">150</integer>
+
+</resources>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/values/items.xml b/samples/devbytes/animation/SlidingFragments/res/values/items.xml
new file mode 100644
index 000000000..2b7f0b58b
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/values/items.xml
@@ -0,0 +1,20 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<resources>
+
+    <item name="slide_up_down_fraction" type="dimen" format="float">0.67</item>
+
+</resources>
\ No newline at end of file
diff --git a/samples/devbytes/animation/SlidingFragments/res/values/strings.xml b/samples/devbytes/animation/SlidingFragments/res/values/strings.xml
new file mode 100644
index 000000000..dbc41da47
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/res/values/strings.xml
@@ -0,0 +1,29 @@
+<!-- Copyright (C) 2013 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.
+-->
+
+<resources>
+
+    <string name="app_name">SlidingFragments</string>
+    <string name="photo_credits"><b>Golden Gate Sunset</b> by <b>Romain Guy</b></string>
+    <string name="address"><b>Address:</b> Golden Gate Bridge, San Francisco, CA 94129</string>
+    <string name="elevation"><b>Elevation:</b>  220\' (67 m)</string>
+    <string name="height"><b>Height:</b>  746\' (227 m)</string>
+    <string name="construction"><b>Construction started:</b>  1933</string>
+    <string name="span"><b>Longest span:</b>  4,200\' (1,280 m)</string>
+    <string name="length"><b>Total length:</b>  8,980\' (2,737 m)</string>
+    <string name="summary">"The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the opening of the San Francisco Bay into the Pacific Ocean."</string>
+    <string name="bridge">Golden Gate Bridge</string>
+
+</resources>
diff --git a/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/FractionalLinearLayout.java b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/FractionalLinearLayout.java
new file mode 100644
index 000000000..55f7269da
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/FractionalLinearLayout.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2013 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.example.android.slidingfragments;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.LinearLayout;
+
+/**
+ * In order to animate the fragment containing text on/off the screen,
+ * it is required that we know the height of the device being used. However,
+ * this can only be determined at runtime, so we cannot specify the required
+ * translation in an xml file. Since FragmentTransaction's setCustomAnimations
+ * method requires an ID of an animation defined via an xml file, this linear
+ * layout was built as a workaround. This custom linear layout is created to specify
+ * the location of the fragment's layout as a fraction of the device's height. By
+ * animating yFraction from 0 to 1, we can animate the fragment from the top of
+ * the screen to the bottom of the screen, regardless of the device's specific size.
+ */
+public class FractionalLinearLayout extends LinearLayout {
+
+    private float mYFraction;
+    private int mScreenHeight;
+
+    public FractionalLinearLayout(Context context) {
+        super(context);
+    }
+
+    public FractionalLinearLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onSizeChanged (int w, int h, int oldw, int oldh) {
+        super.onSizeChanged(w, h, oldw, oldh);
+        mScreenHeight = h;
+        setY(mScreenHeight);
+    }
+
+    public float getYFraction() {
+        return mYFraction;
+    }
+
+    public void setYFraction(float yFraction) {
+        mYFraction = yFraction;
+        setY((mScreenHeight > 0) ? (mScreenHeight - yFraction * mScreenHeight) : 0);
+    }
+}
diff --git a/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/ImageFragment.java b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/ImageFragment.java
new file mode 100644
index 000000000..e306c98a8
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/ImageFragment.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2013 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.example.android.slidingfragments;
+
+import android.app.Fragment;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+public class ImageFragment extends Fragment {
+
+    View.OnClickListener clickListener;
+
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.image_fragment, container, false);
+        view.setOnClickListener(clickListener);
+        return view;
+    }
+
+    public void setClickListener(View.OnClickListener clickListener) {
+        this.clickListener = clickListener;
+    }
+}
diff --git a/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/OnTextFragmentAnimationEndListener.java b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/OnTextFragmentAnimationEndListener.java
new file mode 100644
index 000000000..692a7cbc7
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/OnTextFragmentAnimationEndListener.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2013 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.example.android.slidingfragments;
+
+/**
+ * This interface is used to inform the main activity when the entry
+ * animation of the text fragment has completed in order to avoid the
+ * start of a new animation before the current one has completed.
+ */
+public interface OnTextFragmentAnimationEndListener {
+    public void onAnimationEnd();
+}
diff --git a/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/SlidingFragments.java b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/SlidingFragments.java
new file mode 100644
index 000000000..9bfd8d4a2
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/SlidingFragments.java
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2013 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.example.android.slidingfragments;
+
+import android.animation.Animator;
+import android.animation.Animator.AnimatorListener;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.animation.PropertyValuesHolder;
+import android.app.Activity;
+import android.app.FragmentManager;
+import android.app.FragmentTransaction;
+import android.os.Bundle;
+import android.view.View;
+
+/**
+ * This application shows a simple technique to animate and overlay two fragments
+ * on top of each other in order to provide a more immersive experience,
+ * as opposed to only having full screen transitions. When additional content
+ * (text) related to the currently displayed content (image) is to be shown,
+ * the currently visible content can be moved into the background instead of
+ * being removed from the screen entirely. This effect can therefore
+ * provide a more natural way of displaying additional information to the user
+ * using a different fragment.
+ *
+ * In this specific demo, tapping on the screen toggles between the two
+ * animated states of the fragment. When the animation is called,
+ * the fragment with an image animates into the background while the fragment
+ * containing text slides up on top of it. When the animation is toggled once
+ * more, the text fragment slides back down and the image fragment regains
+ * focus.
+ */
+public class SlidingFragments extends Activity implements
+        OnTextFragmentAnimationEndListener, FragmentManager.OnBackStackChangedListener {
+
+    ImageFragment mImageFragment;
+    TextFragment mTextFragment;
+    View mDarkHoverView;
+
+    boolean mDidSlideOut = false;
+    boolean mIsAnimating = false;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.sliding_fragments_layout);
+
+        mDarkHoverView = findViewById(R.id.dark_hover_view);
+        mDarkHoverView.setAlpha(0);
+
+        mImageFragment = (ImageFragment) getFragmentManager().findFragmentById(R.id.move_fragment);
+        mTextFragment = new TextFragment();
+
+        getFragmentManager().addOnBackStackChangedListener(this);
+
+        mImageFragment.setClickListener(mClickListener);
+        mTextFragment.setClickListener(mClickListener);
+        mTextFragment.setOnTextFragmentAnimationEnd(this);
+        mDarkHoverView.setOnClickListener(mClickListener);
+
+    }
+
+    View.OnClickListener mClickListener = new View.OnClickListener () {
+        @Override
+        public void onClick(View view) {
+            switchFragments();
+        }
+    };
+
+    /**
+     * This method is used to toggle between the two fragment states by
+     * calling the appropriate animations between them. The entry and exit
+     * animations of the text fragment are specified in R.animator resource
+     * files. The entry and exit animations of the image fragment are
+     * specified in the slideBack and slideForward methods below. The reason
+     * for separating the animation logic in this way is because the translucent
+     * dark hover view must fade in at the same time as the image fragment
+     * animates into the background, which would be difficult to time
+     * properly given that the setCustomAnimations method can only modify the
+     * two fragments in the transaction.
+     */
+    private void switchFragments () {
+        if (mIsAnimating) {
+            return;
+        }
+        mIsAnimating = true;
+        if (mDidSlideOut) {
+            mDidSlideOut = false;
+            getFragmentManager().popBackStack();
+        } else {
+            mDidSlideOut = true;
+
+            AnimatorListener listener = new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationEnd(Animator arg0) {
+                    FragmentTransaction transaction = getFragmentManager().beginTransaction();
+                    transaction.setCustomAnimations(R.animator.slide_fragment_in, 0, 0,
+                            R.animator.slide_fragment_out);
+                    transaction.add(R.id.move_to_back_container, mTextFragment);
+                    transaction.addToBackStack(null);
+                    transaction.commit();
+                }
+            };
+            slideBack (listener);
+        }
+    }
+
+    @Override
+    public void onBackStackChanged() {
+        if (!mDidSlideOut) {
+            slideForward(null);
+        }
+
+    }
+
+    /**
+     * This method animates the image fragment into the background by both
+     * scaling and rotating the fragment's view, as well as adding a
+     * translucent dark hover view to inform the user that it is inactive.
+     */
+    public void slideBack(AnimatorListener listener)
+    {
+        View movingFragmentView = mImageFragment.getView();
+
+        PropertyValuesHolder rotateX =  PropertyValuesHolder.ofFloat("rotationX", 40f);
+        PropertyValuesHolder scaleX =  PropertyValuesHolder.ofFloat("scaleX", 0.8f);
+        PropertyValuesHolder scaleY =  PropertyValuesHolder.ofFloat("scaleY", 0.8f);
+        ObjectAnimator movingFragmentAnimator = ObjectAnimator.
+                ofPropertyValuesHolder(movingFragmentView, rotateX, scaleX, scaleY);
+
+        ObjectAnimator darkHoverViewAnimator = ObjectAnimator.
+                ofFloat(mDarkHoverView, "alpha", 0.0f, 0.5f);
+
+        ObjectAnimator movingFragmentRotator = ObjectAnimator.
+                ofFloat(movingFragmentView, "rotationX", 0);
+        movingFragmentRotator.setStartDelay(getResources().
+                getInteger(R.integer.half_slide_up_down_duration));
+
+        AnimatorSet s = new AnimatorSet();
+        s.playTogether(movingFragmentAnimator, darkHoverViewAnimator, movingFragmentRotator);
+        s.addListener(listener);
+        s.start();
+    }
+
+    /**
+     * This method animates the image fragment into the foreground by both
+     * scaling and rotating the fragment's view, while also removing the
+     * previously added translucent dark hover view. Upon the completion of
+     * this animation, the image fragment regains focus since this method is
+     * called from the onBackStackChanged method.
+     */
+    public void slideForward(AnimatorListener listener)
+    {
+        View movingFragmentView = mImageFragment.getView();
+
+        PropertyValuesHolder rotateX =  PropertyValuesHolder.ofFloat("rotationX", 40f);
+        PropertyValuesHolder scaleX =  PropertyValuesHolder.ofFloat("scaleX", 1.0f);
+        PropertyValuesHolder scaleY =  PropertyValuesHolder.ofFloat("scaleY", 1.0f);
+        ObjectAnimator movingFragmentAnimator = ObjectAnimator.
+                ofPropertyValuesHolder(movingFragmentView, rotateX, scaleX, scaleY);
+
+        ObjectAnimator darkHoverViewAnimator = ObjectAnimator.
+                ofFloat(mDarkHoverView, "alpha", 0.5f, 0.0f);
+
+        ObjectAnimator movingFragmentRotator = ObjectAnimator.
+                ofFloat(movingFragmentView, "rotationX", 0);
+        movingFragmentRotator.setStartDelay(
+                getResources().getInteger(R.integer.half_slide_up_down_duration));
+
+        AnimatorSet s = new AnimatorSet();
+        s.playTogether(movingFragmentAnimator, movingFragmentRotator, darkHoverViewAnimator);
+        s.setStartDelay(getResources().getInteger(R.integer.slide_up_down_duration));
+        s.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mIsAnimating = false;
+            }
+        });
+        s.start();
+    }
+
+    public void onAnimationEnd() {
+        mIsAnimating = false;
+    }
+}
diff --git a/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/TextFragment.java b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/TextFragment.java
new file mode 100644
index 000000000..f1f245cee
--- /dev/null
+++ b/samples/devbytes/animation/SlidingFragments/src/com/example/android/slidingfragments/TextFragment.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2013 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.example.android.slidingfragments;
+
+import android.animation.Animator;
+import android.animation.AnimatorInflater;
+import android.animation.AnimatorListenerAdapter;
+import android.app.Fragment;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+public class TextFragment extends Fragment {
+
+    View.OnClickListener clickListener;
+    OnTextFragmentAnimationEndListener mListener;
+
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.text_fragment, container, false);
+        view.setOnClickListener(clickListener);
+        return view;
+    }
+
+    public void setClickListener(View.OnClickListener clickListener) {
+        this.clickListener = clickListener;
+    }
+
+    @Override
+    public Animator onCreateAnimator(int transit, boolean enter, int nextAnim)
+    {
+        int id = enter ? R.animator.slide_fragment_in : R.animator.slide_fragment_out;
+        final Animator anim = AnimatorInflater.loadAnimator(getActivity(), id);
+        if (enter) {
+            anim.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    mListener.onAnimationEnd();
+                }
+            });
+        }
+        return anim;
+    }
+
+    public void setOnTextFragmentAnimationEnd(OnTextFragmentAnimationEndListener listener)
+    {
+        mListener = listener;
+    }
+
+}