1 files changed, 85 insertions, 0 deletions
diff --git a/samples/devbytes/animation/KeyframeAnimation/src/com/example/android/keyframeanimation/KeyframeAnimation.java b/samples/devbytes/animation/KeyframeAnimation/src/com/example/android/keyframeanimation/KeyframeAnimation.java
new file mode 100644
index 000000000..9a6bbd017
--- /dev/null
+++ b/samples/devbytes/animation/KeyframeAnimation/src/com/example/android/keyframeanimation/KeyframeAnimation.java
@@ -0,0 +1,85 @@
+/*
+ * 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.keyframeanimation;
+
+import android.app.Activity;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.drawable.AnimationDrawable;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ImageView;
+
+/**
+ * This example shows how to use AnimationDrawable to construct a keyframe animation where each
+ * frame is shown for a specified duration.
+ *
+ * Watch the associated video for this demo on the DevBytes channel of developer.android.com
+ * or on YouTube at https://www.youtube.com/watch?v=V3ksidLf7vA.
+ */
+public class KeyframeAnimation extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_keyframe_animation);
+
+        ImageView imageview = (ImageView) findViewById(R.id.imageview);
+
+        // Create the AnimationDrawable in which we will store all frames of the animation
+        final AnimationDrawable animationDrawable = new AnimationDrawable();
+        for (int i = 0; i < 10; ++i) {
+            animationDrawable.addFrame(getDrawableForFrameNumber(i), 300);
+        }
+        // Run until we say stop
+        animationDrawable.setOneShot(false);
+
+        imageview.setImageDrawable(animationDrawable);
+
+        // When the user clicks on the image, toggle the animation on/off
+        imageview.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                if (animationDrawable.isRunning()) {
+                    animationDrawable.stop();
+                } else {
+                    animationDrawable.start();
+                }
+            }
+        });
+    }
+
+    /**
+     * The 'frames' in this app are nothing more than a gray background with text indicating
+     * the number of the frame.
+     */
+    private BitmapDrawable getDrawableForFrameNumber(int frameNumber) {
+        Bitmap bitmap = Bitmap.createBitmap(400, 400, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        canvas.drawColor(Color.GRAY);
+        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        paint.setTextSize(80);
+        paint.setColor(Color.BLACK);
+        canvas.drawText("Frame " + frameNumber, 40, 220, paint);
+        return new BitmapDrawable(getResources(), bitmap);
+    }
+
+}