Android でビューを変更しながら、Flipboard をアニメーション化したいと考えています。
レイアウト全体で Flipboard をアニメーション化することはできますか? 写真の文字に似ていますが、全体のレイアウトです。
例えば：
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
// whole layout design
<LinearLayout/>
このレイアウトを変更したり、別のレイアウトをインフレートして Flipboard アニメーションを実行したりするときに、アニメーションを作成したいと思います。
アニメーションはこれとまったく同じように見えるはずです
この質問の答えは GitHub にあります。OpenAphid によって提供された非常に良い例です。このリンクにアクセスしてください。
次のコードを使用してください:
クラス 1:
import android.graphics.Color;
import android.view.Display;
import android.view.View;
import android.view.WindowManager;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
/**
* A class that is responsible switching the mode with the flip animation
*/
public class ViewSwitcher {
private final static int DURATION = 500;
private final static float DEPTH = 400.0f;
public interface AnimationFinishedListener {
/**
* Called when the animation is finished.
*/
public void onAnimationFinished();
}
public static void animationIn(View container, WindowManager windowManager) {
animationIn(container, windowManager, null);
}
public static void animationIn(View container, WindowManager windowManager, AnimationFinishedListener listener) {
apply3DRotation(90, 0, false, container, windowManager, listener);
}
public static void animationOut(View container, WindowManager windowManager) {
animationOut(container, windowManager, null);
}
public static void animationOut(View container, WindowManager windowManager, AnimationFinishedListener listener) {
apply3DRotation(0, -90, true, container, windowManager, listener);
}
private static void apply3DRotation(float fromDegree, float toDegree, boolean reverse, View container, WindowManager windowManager, final AnimationFinishedListener listener) {
Display display = windowManager.getDefaultDisplay();
final float centerX = display.getWidth() / 2.0f;
final float centerY = display.getHeight() / 2.0f;
final Rotate3dAnimation a = new Rotate3dAnimation(fromDegree, toDegree, centerX, centerY, DEPTH, reverse);
a.reset();
a.setBackgroundColor(Color.WHITE);
a.setDuration(DURATION);
a.setFillAfter(true);
a.setInterpolator(new AccelerateInterpolator());
if (listener != null) {
a.setAnimationListener(new Animation.AnimationListener() {
public void onAnimationStart(Animation animation) {
}
public void onAnimationRepeat(Animation animation) {
}
public void onAnimationEnd(Animation animation) {
listener.onAnimationFinished();
}
});
}
if(container != null){
container.clearAnimation();
container.startAnimation(a);
}
else if (listener != null)
listener.onAnimationFinished();
}
}
クラス 2:
import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.graphics.Camera;
import android.graphics.Color;
import android.graphics.Matrix;
/**
* An animation that rotates the view on the Y axis between two specified angles.
* This animation also adds a translation on the Z axis (depth) to improve the effect.
*/
public class Rotate3dAnimation extends Animation {
private final float mFromDegrees;
private final float mToDegrees;
private final float mCenterX;
private final float mCenterY;
private final float mDepthZ;
private final boolean mReverse;
private Camera mCamera;
/**
* Creates a new 3D rotation on the Y axis. The rotation is defined by its
* start angle and its end angle. Both angles are in degrees. The rotation
* is performed around a center point on the 2D space, definied by a pair
* of X and Y coordinates, called centerX and centerY. When the animation
* starts, a translation on the Z axis (depth) is performed. The length
* of the translation can be specified, as well as whether the translation
* should be reversed in time.
*
* @param fromDegrees the start angle of the 3D rotation
* @param toDegrees the end angle of the 3D rotation
* @param centerX the X center of the 3D rotation
* @param centerY the Y center of the 3D rotation
* @param reverse true if the translation should be reversed, false otherwise
*/
public Rotate3dAnimation(float fromDegrees, float toDegrees,
float centerX, float centerY, float depthZ, boolean reverse) {
super.setBackgroundColor(Color.WHITE);
mFromDegrees = fromDegrees;
mToDegrees = toDegrees;
mCenterX = centerX;
mCenterY = centerY;
mDepthZ = depthZ;
mReverse = reverse;
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.setBackgroundColor(Color.WHITE);
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
super.setBackgroundColor(Color.WHITE);
final float fromDegrees = mFromDegrees;
float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);
final float centerX = mCenterX;
final float centerY = mCenterY;
final Camera camera = mCamera;
final Matrix matrix = t.getMatrix();
camera.save();
if (mReverse) {
camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);
} else {
camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));
}
camera.rotateX(degrees);
camera.getMatrix(matrix);
camera.restore();
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
}
クラス 3:
This Will be Your Actual activity where you should call following two calls to AnimationOut and AnimationIn with passing old view, new view respectively whenever you require to make your disered animation.
次に、以下のように削除する古いビューとして最初の引数を指定して animationOut を呼び出します。
ViewSwitcher.animationOut(this.findViewById(android.R.id.content1), getWindowManager(), new ViewSwitcher.AnimationFinishedListener() {
public void onAnimationFinished() {
//Do Something here before removing this view from screen if required.
}
});
次のように表示される新しいビューとして、最初の引数で animationIn を呼び出します。
ViewSwitcher.animationIn(this.findViewById(android.R.id.content2), this.getWindowManager());