Hoạt ảnh trên Android Flipboard

Question

Tôi muốn tạo hoạt ảnh cho Flipboard trong khi thay đổi chế độ xem trong Android.

Có thể tạo hoạt ảnh cho Flipboard trên toàn bộ bố cục không? Một cái gì đó tương tự như những chữ cái trên hình ảnh nhưng toàn bộ bố cục.

Ví dụ:

<LinearLayout 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent"> 

// whole layout design 

<LinearLayout/> 

Tôi muốn thực hiện một hình ảnh động khi thay đổi Layout này và/hoặc lạm phát khác để làm hình ảnh động Flipboard.

Các hoạt hình nên trông giống hệt như this one

Answer 1

Câu trả lời của câu hỏi này là trên GitHub. Một ví dụ rất hay được cung cấp bởi OpenAphid. Truy cập vào link này.

Answer 2

Sử dụng sau Codes Họ là chính xác cho yêu cầu của bạn:

Lớp 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(); 
     } 
    } 

lớp 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); 

    } 
} 

Class 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. 

Bây giờ Gọi animationOut với số đầu tiên là quan điểm Cũ phải được loại bỏ như dưới đây:

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. 
      } 
     }); 

Bây giờ Gọi animationIn với số đầu tiên là xem mới được được hiển thị như bên dưới:

ViewSwitcher.animationIn(this.findViewById(android.R.id.content2), this.getWindowManager());