Android实现dialog的3D翻转示例

本文实现了Android中dialog的3D翻转效果。这里通过一个简单的应用场景记录下。

效果图

起初自己的思路是Activity进行界面跳转实现旋转效果，网上看了很多，写下来发现效果不对。之后又看到Google上面的Card Flid Animation效果是这样的。

看着确实不错，然而拿下来demo放慢翻转速度后发现，不是我想要的。但是跟我看到的一个app里面的效果一样

然后想改成dialog试试效果，发现更是不行了。

Card Flid Animation效果如下：

这个是通过Activity来切换Fragment实现的，可以看到区别是翻转时候貌似会变大，其实没用，只是翻转后的视觉问题。

听说openGl比较麻烦，并且没有用过。然后就搜了下Rotate3DAnimaitons。

搜到了这篇文章http://www.jb51.net/article/77195.htm

所以这篇文章里的实现方法不是我的原创，是参考人家的。在这里感谢这位大神。

不过他这个是activity里的，我就想要一个dialog效果，因为电脑上TIM的打开红包这个3D效果看着不错，其实大同小异，就拿过来改成Dialog。

对于Rotate3DAnimaitons这篇文章已经很详细了，有需要的可以参考下。

这里也贴下Rotate3dAnimation 的代码

简单加了两行注释

/**
 * 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 //起始角度
   * @param toDegrees the end angle of the 3D rotation //结束角度
   * @param centerX the X center of the 3D rotation //x中轴线
   * @param centerY the Y center of the 3D rotation //y中轴线
   * @param reverse true if the translation should be reversed, false otherwise//是否反转
   */
  public Rotate3dAnimation(float fromDegrees, float toDegrees,
      float centerX, float centerY, float depthZ, boolean reverse) {
    mFromDegrees = fromDegrees;
    mToDegrees = toDegrees;
    mCenterX = centerX;
    mCenterY = centerY;
    mDepthZ = depthZ;//Z轴移动的距离，这个来影响视觉效果，可以解决flip animation那个给人看似放大的效果
    mReverse = reverse;
  }

  @Override
  public void initialize(int width, int height, int parentWidth, int parentHeight) {
    super.initialize(width, height, parentWidth, parentHeight);
    mCamera = new Camera();
  }

  @Override
  protected void applyTransformation(float interpolatedTime, Transformation t) {
    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();

    Log.i("interpolatedTime", interpolatedTime+"");
    camera.save();
    if (mReverse) {
      camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);
    } else {
      camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));
    }
    camera.rotateY(degrees);
    camera.getMatrix(matrix);
    camera.restore();

    matrix.preTranslate(-centerX, -centerY);
    matrix.postTranslate(centerX, centerY);
  }
}

dialog实现3D翻转代码，

说明：动画部分的代码是拿的搜的的那篇文章的

public class MyDialog extends Dialog {

  @BindView(R.id.et_user_name)
  EditText etUserName;
  @BindView(R.id.et_password)
  EditText etPassword;
  @BindView(R.id.cb_auto_login)
  CheckBox cbAutoLogin;
  @BindView(R.id.tv_forget_pwd)
  TextView tvForgetPwd;
  @BindView(R.id.ll_content)
  LinearLayout llContent;
  @BindView(R.id.et_email)
  EditText etEmail;
  @BindView(R.id.btn_back)
  Button btnBack;
  @BindView(R.id.container)
  RelativeLayout container;
  private Context context;

  @BindView(R.id.ll_register)
  LinearLayout llRegister;

  //接口回调传递参数
  private OnClickListenerInterface mListener;
  private View view;
//
  private String strContent;

  private int centerX;
  private int centerY;
  private int depthZ = 700;//修改此处可以改变距离来达到你满意的效果
  private int duration = 300;//动画时间
  private Rotate3dAnimation openAnimation;
  private Rotate3dAnimation closeAnimation;

  private boolean isOpen = false;

  public interface OnClickListenerInterface {

    /**
     * 确认,
     */
    void doConfirm();

    /**
     * 取消
     */
//    public void doCancel();
  }

  public MyDialog(Context context) {
    super(context);
    this.context = context;
  }

  public MyDialog(Context context, String content) {
    super(context);
    this.context = context;
    this.strContent = content;

  }

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //去掉系统的黑色矩形边框
    getWindow().setBackgroundDrawableResource(android.R.color.transparent);
    requestWindowFeature(Window.FEATURE_NO_TITLE);

    init();
  }

  public void init() {
    LayoutInflater inflater = LayoutInflater.from(context);
    view = inflater.inflate(R.layout.dialog_my, null);
    setContentView(view);
    ButterKnife.bind(this);
    etPassword.setTypeface(Typeface.DEFAULT);
    etPassword.setTransformationMethod(new PasswordTransformationMethod());
    tvForgetPwd.setOnClickListener(new OnWidgetClickListener());
    btnBack.setOnClickListener(new OnWidgetClickListener());
    Window dialogWindow = getWindow();
    WindowManager.LayoutParams lp = dialogWindow.getAttributes();
    DisplayMetrics d = context.getResources().getDisplayMetrics(); // 获取屏幕宽、高用
    lp.width = (int) (d.widthPixels * 0.8); // 宽度设置为屏幕的0.8
    lp.height = (int) (d.heightPixels * 0.6); // 高度设置为屏幕的0.6
    dialogWindow.setAttributes(lp);
    setCanceledOnTouchOutside(false);
    setCancelable(true);
  }

  public void setClicklistener(OnClickListenerInterface clickListenerInterface) {
    this.mListener = clickListenerInterface;
  }

  private class OnWidgetClickListener implements View.OnClickListener {
    @Override
    public void onClick(View v) {

      int id = v.getId();
      switch (id) {
        case R.id.tv_forget_pwd:
          startAnimation();
          break;
        case R.id.btn_back:
          startAnimation();
          break;
      }
    }
  }

  private void startAnimation() {
    //接口回调传递参数
    centerX = container.getWidth() / 2;
    centerY = container.getHeight() / 2;
    if (openAnimation == null) {
      initOpenAnim();
      initCloseAnim();
    }

    //用作判断当前点击事件发生时动画是否正在执行
    if (openAnimation.hasStarted() && !openAnimation.hasEnded()) {
      return;
    }
    if (closeAnimation.hasStarted() && !closeAnimation.hasEnded()) {
      return;
    }

    //判断动画执行
    if (isOpen) {

      container.startAnimation(openAnimation);

    } else {

      container.startAnimation(closeAnimation);

    }
    isOpen = !isOpen;
  }

  /**
   *注意旋转角度
   */
  private void initOpenAnim() {
    //从0到90度，顺时针旋转视图，此时reverse参数为true，达到90度时动画结束时视图变得不可见，
    openAnimation = new Rotate3dAnimation(0, 90, centerX, centerY, depthZ, true);
    openAnimation.setDuration(duration);
    openAnimation.setFillAfter(true);
    openAnimation.setInterpolator(new AccelerateInterpolator());
    openAnimation.setAnimationListener(new Animation.AnimationListener() {

      @Override
      public void onAnimationStart(Animation animation) {

      }

      @Override
      public void onAnimationRepeat(Animation animation) {

      }

      @Override
      public void onAnimationEnd(Animation animation) {
        llRegister.setVisibility(View.GONE);
        llContent.setVisibility(View.VISIBLE);
        //从270到360度，顺时针旋转视图，此时reverse参数为false，达到360度动画结束时视图变得可见
        Rotate3dAnimation rotateAnimation = new Rotate3dAnimation(270, 360, centerX, centerY, depthZ, false);
        rotateAnimation.setDuration(duration);
        rotateAnimation.setFillAfter(true);
        rotateAnimation.setInterpolator(new DecelerateInterpolator());
        container.startAnimation(rotateAnimation);
      }
    });
  }

  private void initCloseAnim() {
    closeAnimation = new Rotate3dAnimation(360, 270, centerX, centerY, depthZ, true);
    closeAnimation.setDuration(duration);
    closeAnimation.setFillAfter(true);
    closeAnimation.setInterpolator(new AccelerateInterpolator());
    closeAnimation.setAnimationListener(new Animation.AnimationListener() {

      @Override
      public void onAnimationStart(Animation animation) {

      }

      @Override
      public void onAnimationRepeat(Animation animation) {

      }

      @Override
      public void onAnimationEnd(Animation animation) {
        llRegister.setVisibility(View.VISIBLE);
        llContent.setVisibility(View.GONE);
        Rotate3dAnimation rotateAnimation = new Rotate3dAnimation(90, 0, centerX, centerY, depthZ, false);
        rotateAnimation.setDuration(duration);
        rotateAnimation.setFillAfter(true);
        rotateAnimation.setInterpolator(new DecelerateInterpolator());
        container.startAnimation(rotateAnimation);
      }
    });
  }
}

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