android.support.v4.view.ViewCompat#setPivotX ( )源码实例Demo

protected void resetView(View view) {
    Log.v("resetView: " + view);
    ViewCompat.setAlpha(view, 1);
    ViewCompat.setTranslationX(view, 0);
    ViewCompat.setTranslationY(view, 0);
    ViewCompat.setTranslationZ(view, 0);
    ViewCompat.setRotation(view, 0);
    ViewCompat.setRotationX(view, 0);
    ViewCompat.setRotationY(view, 0);
    ViewCompat.setScaleX(view, 1);
    ViewCompat.setScaleY(view, 1);
    ViewCompat.setPivotY(view, view.getMeasuredHeight() / 2);
    ViewCompat.setPivotX(view, view.getMeasuredWidth() / 2);
    ViewCompat.animate(view).setInterpolator(null);

    //do we need it at all ?
    // view.invalidate();
}
 

public static void resetPageTransformer(List<? extends View> views) {
    if (views == null) {
        return;
    }

    for (View view : views) {
        view.setVisibility(View.VISIBLE);
        ViewCompat.setAlpha(view, 1);
        ViewCompat.setPivotX(view, view.getMeasuredWidth() * 0.5f);
        ViewCompat.setPivotY(view, view.getMeasuredHeight() * 0.5f);
        ViewCompat.setTranslationX(view, 0);
        ViewCompat.setTranslationY(view, 0);
        ViewCompat.setScaleX(view, 1);
        ViewCompat.setScaleY(view, 1);
        ViewCompat.setRotationX(view, 0);
        ViewCompat.setRotationY(view, 0);
        ViewCompat.setRotation(view, 0);
    }
}
 

@Override
protected void onTransform(View view, float position) {
    final float rotation = -180f * position;
    ViewCompat.setAlpha(view, rotation > 90f || rotation < -90f ? 0f : 1f);
    ViewCompat.setPivotX(view, view.getWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getHeight() * 0.5f);
    ViewCompat.setRotationX(view, rotation);

}
 

@Override
protected void onTransform(View view, float position) {
    final float scale = position < 0 ? position + 1f : Math.abs(1f - position);
    ViewCompat.setScaleX(view, scale);
    ViewCompat.setScaleY(view, scale);
    ViewCompat.setPivotX(view, view.getMeasuredWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getMeasuredHeight() * 0.5f);
    ViewCompat.setAlpha(view, position < -1f || position > 1f ? 0f : 1f - (scale - 1f));
}
 

@Override
public void handleLeftPage(View view, float position) {
    ViewCompat.setTranslationX(view, -view.getWidth() * position);

    ViewCompat.setPivotX(view, view.getWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getHeight() * 0.5f);
    ViewCompat.setScaleX(view, 1 + position);
    ViewCompat.setScaleY(view, 1 + position);

    ViewCompat.setAlpha(view, 1 + position);
}
 

@Override
public void handleLeftPage(View view, float position) {
    ViewCompat.setTranslationX(view, -view.getWidth() * position);

    ViewCompat.setPivotX(view, view.getWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getHeight() * 0.5f);
    ViewCompat.setScaleX(view, 1 + position);
    ViewCompat.setScaleY(view, 1 + position);

    ViewCompat.setAlpha(view, 1 + position);
}
 

public static void clearAnimator(View v) {
    ViewCompat.setAlpha(v, 1);
    ViewCompat.setScaleY(v, 1);
    ViewCompat.setScaleX(v, 1);
    ViewCompat.setTranslationY(v, 0);
    ViewCompat.setTranslationX(v, 0);
    ViewCompat.setRotation(v, 0);
    ViewCompat.setRotationY(v, 0);
    ViewCompat.setRotationX(v, 0);
    // @TODO https://code.google.com/p/android/issues/detail?id=80863
    // ViewCompat.setPivotY(v, v.getMeasuredHeight() / 2);
    v.setPivotY(v.getMeasuredHeight() / 2);
    ViewCompat.setPivotX(v, v.getMeasuredWidth() / 2);
    ViewCompat.animate(v).setInterpolator(null);
}
 

@Override
public void handleRightPage(View view, float position) {
    ViewCompat.setTranslationX(view, -view.getWidth() * position);

    ViewCompat.setPivotX(view, view.getWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getHeight() * 0.5f);
    ViewCompat.setScaleX(view, 1 - position);
    ViewCompat.setScaleY(view, 1 - position);
    ViewCompat.setAlpha(view, 1 - position);
}
 

@Override
public void handleLeftPage(View view, float position) {
    float rotation = (mMaxRotation * position);
    ViewCompat.setPivotX(view, view.getMeasuredWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getMeasuredHeight());
    ViewCompat.setRotation(view, rotation);
}
 

@Override
public void handleLeftPage(View view, float position) {
    ViewCompat.setTranslationX(view, -view.getWidth() * position);

    ViewCompat.setPivotX(view, view.getWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getHeight() * 0.5f);
    ViewCompat.setScaleX(view, 1 + position);
    ViewCompat.setScaleY(view, 1 + position);

    if (position < -0.95f) {
        ViewCompat.setAlpha(view, 0);
    } else {
        ViewCompat.setAlpha(view, 1);
    }
}
 

@Override
public void handleLeftPage(View view, float position) {
    ViewCompat.setTranslationX(view, -view.getWidth() * position);

    ViewCompat.setPivotX(view, view.getWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getHeight() * 0.5f);
    ViewCompat.setScaleX(view, 1 + position);
    ViewCompat.setScaleY(view, 1 + position);

    if (position < -0.95f) {
        ViewCompat.setAlpha(view, 0);
    } else {
        ViewCompat.setAlpha(view, 1);
    }
}
 

@Override
protected void onTransform(View view, float position) {
	final float width = view.getWidth();
	final float height = view.getHeight();
	final float rotation = ROT_MOD * position * -1.25f;

	ViewCompat.setPivotX(view, width * 0.5f);
       ViewCompat.setPivotY(view,height);
       ViewCompat.setRotation(view,rotation);
}
 

@Override
public void handleLeftPage(View view, float position) {
    ViewCompat.setPivotX(view, view.getMeasuredWidth());
    ViewCompat.setPivotY(view, view.getMeasuredHeight() * 0.5f);
    ViewCompat.setRotationY(view, mMaxRotation * position);
}
 

@Override
protected void preAnimateAddImpl(RecyclerView.ViewHolder holder) {
    ViewCompat.setPivotX(holder.itemView, holder.itemView.getWidth());
    ViewCompat.setScaleX(holder.itemView, 0);
    ViewCompat.setScaleY(holder.itemView, 0);
}
 

@Override
protected void preAnimateRemoveImpl(RecyclerView.ViewHolder holder) {
    ViewCompat.setPivotX(holder.itemView, 0);
}
 

@Override
protected void preAnimateRemoveImpl(RecyclerView.ViewHolder holder) {
    ViewCompat.setPivotX(holder.itemView, holder.itemView.getWidth());
}
 

@Override
public void handleInvisiblePage(View view, float position) {
    ViewCompat.setPivotX(view, view.getMeasuredWidth());
    ViewCompat.setPivotY(view, view.getMeasuredHeight() * 0.5f);
    ViewCompat.setRotationY(view, 0);
}
 

@Override
public void handleInvisiblePage(View view, float position) {
    ViewCompat.setPivotX(view, view.getMeasuredWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getMeasuredHeight());
    ViewCompat.setRotation(view, 0);
}
 

@Override
public void handleRightPage(View view, float position) {
    ViewCompat.setPivotX(view, 0);
    ViewCompat.setScaleX(view, 1.0f - position);
    ViewCompat.setAlpha(view, 1);
}
 

@Override
public void handleInvisiblePage(View view, float position) {
    ViewCompat.setPivotX(view, view.getMeasuredWidth() * 0.5f);
    ViewCompat.setPivotY(view, view.getMeasuredHeight());
    ViewCompat.setRotation(view, 0);
}