New DevBytes animation demos

Change-Id: Ib475ddb109e0e62f0f085b6591ca15af0b79f75b

1 files changed, 65 insertions, 0 deletions

diff --git a/samples/devbytes/animation/LiveButton/src/com/example/android/livebutton/LiveButton.java b/samples/devbytes/animation/LiveButton/src/com/example/android/livebutton/LiveButton.java
new file mode 100644
index 000000000..d9f8d5e7d
--- /dev/null
+++ b/samples/devbytes/animation/LiveButton/src/com/example/android/livebutton/LiveButton.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.livebutton;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.animation.DecelerateInterpolator;
+import android.view.animation.OvershootInterpolator;
+import android.widget.Button;
+
+/**
+ * This app shows a simple application of anticipation and follow-through techniques as
+ * the button animates into its pressed state and animates back out of it, overshooting
+ * end state before resolving.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on the DevBytes playlist in the androiddevelopers channel on YouTube at
+ * https://www.youtube.com/playlist?list=PLWz5rJ2EKKc_XOgcRukSoKKjewFJZrKV0.
+ */
+public class LiveButton extends Activity {
+    
+    DecelerateInterpolator sDecelerator = new DecelerateInterpolator();
+    OvershootInterpolator sOvershooter = new OvershootInterpolator(10f);
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_overshoot);
+        
+        final Button clickMeButton = (Button) findViewById(R.id.clickMe);
+        clickMeButton.animate().setDuration(200);
+        
+        clickMeButton.setOnTouchListener(new View.OnTouchListener() {
+            
+            @Override
+            public boolean onTouch(View arg0, MotionEvent arg1) {
+                if (arg1.getAction() == MotionEvent.ACTION_DOWN) {
+                    clickMeButton.animate().setInterpolator(sDecelerator).
+                            scaleX(.7f).scaleY(.7f);
+                } else if (arg1.getAction() == MotionEvent.ACTION_UP) {
+                    clickMeButton.animate().setInterpolator(sOvershooter).
+                            scaleX(1f).scaleY(1f);
+                }
+                return false;
+            }
+        });
+        
+    }
+}