Java Code Examples for android.view.View#setAlpha()

The following examples show how to use android.view.View#setAlpha() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may want to check out the right sidebar which shows the related API usage.
Example 1
public static void openH(final RecyclerView.ViewHolder holder, final View expandView, final boolean animate, int heightAnimateTime, final ViewHolderAnimator.AnimatorListener animatorListener) {
    if (animate) {
        expandView.setVisibility(View.VISIBLE);
        final Animator animator = ViewHolderAnimator.ofItemViewHeight(holder, heightAnimateTime);
        animator.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationEnd(Animator animation) {
                if(animatorListener != null) {
                    animatorListener.onAnimatorEnd();
                }
                final ObjectAnimator alphaAnimator = ObjectAnimator.ofFloat(expandView, View.ALPHA, 1);
                alphaAnimator.addListener(new ViewHolderAnimator.ViewHolderAnimatorListener(holder));
                alphaAnimator.start();
            }
        });
        animator.start();
    }
    else {
        expandView.setVisibility(View.VISIBLE);
        expandView.setAlpha(1);
    }
}
 
Example 2
/**
 * Called each {@link #transformPage(android.view.View, float)} before {{@link #onTransform(android.view.View, float)}.
 * <p>
 * The default implementation attempts to reset all view properties. This is useful when toggling transforms that do
 * not modify the same page properties. For instance changing from a transformation that applies rotation to a
 * transformation that fades can inadvertently leave a fragment stuck with a rotation or with some degree of applied
 * alpha.
 * 
 * @param page
 *            Apply the transformation to this page
 * @param position
 *            Position of page relative to the current front-and-center position of the pager. 0 is front and
 *            center. 1 is one full page position to the right, and -1 is one page position to the left.
 */
protected void onPreTransform(View page, float position) {
	final float width = page.getWidth();

	page.setRotationX(0);
	page.setRotationY(0);
	page.setRotation(0);
	page.setScaleX(1);
	page.setScaleY(1);
	page.setPivotX(0);
	page.setPivotY(0);
	page.setTranslationY(0);
	page.setTranslationX(isPagingEnabled() ? 0f : -width * position);

	if (hideOffscreenPages()) {
		page.setAlpha(position <= -1f || position >= 1f ? 0f : 1f);
		page.setEnabled(false);
	} else {
		page.setEnabled(true);
		page.setAlpha(1f);
	}
}
 
Example 3
/**
 * 横向情况下的缩放
 */
private void scaleHorizontalChildView() {
    float mid = getWidth() / 2.0f;
    for (int i = 0; i < getChildCount(); i++) {
        View childView =  getChildAt(i);
        if (childView != null) {
            float childMid = (getDecoratedLeft(childView) + getDecoratedRight(childView)) / 2.0f;
            float scale = 1.0f + (-1 * (1 - mScale)) * (Math.min(mid, Math.abs(mid - childMid))) / mid;
            childView.setScaleX(scale);
            childView.setScaleY(scale);
            if (mAlpha) {
                childView.setAlpha(scale);
            }
        }
    }
}
 
Example 4
@Override
public View getHeaderView(int position, View convertView, ViewGroup parent) {
    HeaderViewHolder holder;
    FriendEntry model = mData.get(position);
    if (convertView == null) {
        holder = new HeaderViewHolder();
        convertView = mInflater.inflate(R.layout.header, parent, false);
        if (Build.VERSION.SDK_INT >= 11) {
            convertView.setAlpha(0.85f);
        }
        holder.text = (TextView) convertView.findViewById(R.id.section_tv);
        convertView.setTag(holder);
    } else {
        holder = (HeaderViewHolder) convertView.getTag();
    }

    //根据position获取分类的首字母的Char ascii值
    int section = getSectionForPosition(position);
    holder.text.setText(model.letter);
    //如果当前位置等于该分类首字母的Char的位置 ,则认为是第一次出现
    if (position == getPositionForSection(section)) {
        holder.text.setText(model.letter);
    }
    return convertView;
}
 
Example 5
Source Project: MoeQuest   File: DepthTransFormes.java    License: Apache License 2.0 5 votes vote down vote up
public void transformPage(View view, float position) {

    int pageWidth = view.getWidth();

    if (position < -1) { // [-Infinity,-1)
      // This page is way off-screen to the left.
      view.setAlpha(0);
    } else if (position <= 0) { // [-1,0]
      // Use the default slide transition when moving to the left page
      view.setAlpha(1);
      view.setTranslationX(0);
      view.setScaleX(1);
      view.setScaleY(1);
    } else if (position <= 1) { // (0,1]
      // Fade the page out.
      view.setAlpha(1 - position);

      // Counteract the default slide transition
      view.setTranslationX(pageWidth * -position);

      // Scale the page down (between MIN_SCALE and 1)
      float scaleFactor = MIN_SCALE
          + (1 - MIN_SCALE) * (1 - Math.abs(position));
      view.setScaleX(scaleFactor);
      view.setScaleY(scaleFactor);
    } else { // (1,+Infinity]
      // This page is way off-screen to the right.
      view.setAlpha(0);
    }
  }
 
Example 6
private static void updateReplyIconTransition(@NonNull View replyIcon, float dx, float progress, float sign) {
  if (progress > 0.05f) {
    replyIcon.setAlpha(REPLY_ALPHA_INTERPOLATOR.getInterpolation(progress));
  } else replyIcon.setAlpha(0f);

  replyIcon.setTranslationX(REPLY_TRANSITION_INTERPOLATOR.getInterpolation(progress) * sign);

  if (dx < TRIGGER_DX) {
    float scale = REPLY_SCALE_INTERPOLATOR.getInterpolation(progress);
    replyIcon.setScaleX(scale);
    replyIcon.setScaleY(scale);
  }
}
 
Example 7
private void scaleToShow(){
    for(int i = 2; i<getChildCount(); i++){
        View view = getChildAt(i);
        view.setVisibility(VISIBLE);
        view.setAlpha(0);
        ObjectAnimator scaleX = ObjectAnimator.ofFloat(view, "scaleX", 0f, 1f);
        ObjectAnimator scaleY = ObjectAnimator.ofFloat(view, "scaleY", 0f, 1f);
        ObjectAnimator alpha = ObjectAnimator.ofFloat(view, "alpha", 0f, 1f);
        AnimatorSet set = new AnimatorSet();
        set.playTogether(scaleX, scaleY, alpha);
        set.setDuration(mAnimationDuration);
        set.start();
    }
}
 
Example 8
Source Project: android-md-core   File: AlphaAnimator.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public void onAnimationUpdate(ValueAnimator animation) {
  View target = mTarget.get();
  if (target != null) {
    float alpha = (float) animation.getAnimatedValue();
    target.setAlpha(alpha);
  }
}
 
Example 9
@UiThread public static void mimicFabVisibility(boolean show, @NonNull View view,
                                                @Nullable FloatingActionButton.OnVisibilityChangedListener listener) {
    if (show) {
        view.animate().cancel();
        if (ViewCompat.isLaidOut(view)) {
            if (view.getVisibility() != View.VISIBLE) {
                view.setAlpha(0f);
                view.setScaleY(0f);
                view.setScaleX(0f);
            }
            view.animate()
                    .scaleX(1f)
                    .scaleY(1f)
                    .alpha(1f)
                    .setDuration(200)
                    .setInterpolator(LINEAR_OUT_SLOW_IN_INTERPOLATOR)
                    .withStartAction(() -> {
                        view.setVisibility(View.VISIBLE);
                        if (listener != null) listener.onShown(null);
                    });
        } else {
            view.setVisibility(View.VISIBLE);
            view.setAlpha(1f);
            view.setScaleY(1f);
            view.setScaleX(1f);
            if (listener != null) listener.onShown(null);
        }
    } else {
        view.animate()
                .scaleX(0f)
                .scaleY(0f)
                .alpha(0f)
                .setDuration(40)
                .setInterpolator(FAST_OUT_LINEAR_IN_INTERPOLATOR);
        view.setVisibility(View.GONE);
        if (listener != null) listener.onHidden(null);
    }
}
 
Example 10
public void transformPage(View view, float position) {
    int pageWidth = view.getWidth();
    int pageHeight = view.getHeight();

    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
        view.setAlpha(0);

    } else if (position <= 1) { // [-1,1]
        // Modify the default slide transition to shrink the page as well
        float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));
        float vertMargin = pageHeight * (1 - scaleFactor) / 2;
        float horzMargin = pageWidth * (1 - scaleFactor) / 2;
        if (position < 0) {
            view.setTranslationX(horzMargin - vertMargin / 2);
        } else {
            view.setTranslationX(-horzMargin + vertMargin / 2);
        }

        // Scale the page down (between MIN_SCALE and 1)
        view.setScaleX(scaleFactor);
        view.setScaleY(scaleFactor);

        // Fade the page relative to its size.
        view.setAlpha(MIN_ALPHA +
                (scaleFactor - MIN_SCALE) /
                        (1 - MIN_SCALE) * (1 - MIN_ALPHA));

    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
        view.setAlpha(0);
    }
}
 
Example 11
private void setAlpha(View view, float alpha, long durationMillis) {
    if (Build.VERSION.SDK_INT < 11) {
        final AlphaAnimation animation = new AlphaAnimation(alpha, alpha);
        animation.setDuration(durationMillis);
        animation.setFillAfter(true);
        view.startAnimation(animation);
    } else {
        view.setAlpha(alpha);
    }
}
 
Example 12
Source Project: Banner   File: FlipVerticalTransformer.java    License: Apache License 2.0 5 votes vote down vote up
@Override
protected void onTransform(View view, float position) {
    final float rotation = -180f * position;

    view.setAlpha(rotation > 90f || rotation < -90f ? 0f : 1f);
    view.setPivotX(view.getWidth() * 0.5f);
    view.setPivotY(view.getHeight() * 0.5f);
    view.setRotationX(rotation);
}
 
Example 13
@Override
public void transformPage(View page, float position) {

    page.setTranslationX(-position * page.getWidth());
    page.setCameraDistance(12000);

    if (position < 0.5 && position > -0.5) {
        page.setVisibility(View.VISIBLE);
    } else {
        page.setVisibility(View.INVISIBLE);
    }



    if (position < -1){     // [-Infinity,-1)
        // This page is way off-screen to the left.
        page.setAlpha(0);

    }
    else if (position <= 0) {    // [-1,0]
        page.setAlpha(1);
        page.setRotationY(900 *(1-Math.abs(position)+1));

    }
    else if (position <= 1) {    // (0,1]
        page.setAlpha(1);
        page.setRotationY(-900 *(1-Math.abs(position)+1));

    }
    else {    // (1,+Infinity]
        // This page is way off-screen to the right.
        page.setAlpha(0);

    }


}
 
Example 14
Source Project: Trebuchet   File: Overview.java    License: GNU General Public License v3.0 5 votes vote down vote up
@Override
public void screenScrolled(View v, float progress) {
    float scale =1.0f - 0.1f * mScaleInterpolator
            .getInterpolation(Math.min(0.3f, Math.abs(progress)) / 0.3f);

    v.setPivotX(progress < 0 ? 0 : v.getMeasuredWidth());
    v.setPivotY(v.getMeasuredHeight() * 0.5f);
    v.setScaleX(scale);
    v.setScaleY(scale);
    v.setAlpha(scale);
}
 
Example 15
private void transformPageZoomOut(View view, float position) {
    final float MIN_SCALE = 0.85f;
    final float MIN_ALPHA = 0.5f;

    int pageWidth = view.getWidth();
    int pageHeight = view.getHeight();

    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
        view.setAlpha(0);
    } else if (position <= 1) { // [-1,1]
        // Modify the default slide transition to shrink the page as well
        float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));
        float verMargin = pageHeight * (1 - scaleFactor) / 2;
        float horzMargin = pageWidth * (1 - scaleFactor) / 2;
        if (position < 0) {
            view.setTranslationX(horzMargin - verMargin / 2);
        } else {
            view.setTranslationX(-horzMargin + verMargin / 2);
        }

        // Scale the page down (between MIN_SCALE and 1)
        view.setScaleX(scaleFactor);
        view.setScaleY(scaleFactor);

        // Fade the page relative to its size.
        view.setAlpha(MIN_ALPHA + (scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA));
    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
        view.setAlpha(0);
    }
}
 
Example 16
Source Project: weex-uikit   File: TransformItemDecoration.java    License: MIT License 5 votes vote down vote up
private void updateItem(View child, int width, int height) {
  int size,childCenter,containerSize;
  if (mIsVertical) {
    containerSize = height;
    size = child.getHeight();
    childCenter = child.getTop() + size / 2;
  } else {
    containerSize = width;
    size = child.getWidth();
    childCenter = child.getLeft() + size / 2;
  }

  final int actionDistance = (containerSize + size) / 2;
  final float effectsAmount = Math.min(1.0f, Math.max(-1.0f, (1.0f / actionDistance) * (childCenter - containerSize/2)));


  if(mAlpha>0){
    child.setAlpha(1-mAlpha*Math.abs(effectsAmount));
  }

  if(mScaleX>0||mScaleY>0){
    child.setScaleX(1-mScaleX*Math.abs(effectsAmount));
    child.setScaleY(1-mScaleY*Math.abs(effectsAmount));
  }

  if(mRotation!=0){
    child.setRotation(mRotation * effectsAmount);
  }

  if(mXTranslate!=0){
    child.setTranslationX(mXTranslate * Math.abs( effectsAmount));
  }

  if(mYTranslate!=0){
    child.setTranslationY(mYTranslate * Math.abs( effectsAmount));
  }

}
 
Example 17
/**
 * 设置view的alpha
 */
public UDView setAlpha(float alpha) {
    View view = getView();
    if (view != null) {
        view.setAlpha(alpha);
    }
    return this;
}
 
Example 18
Source Project: WIFIADB   File: AlphaProperty.java    License: Apache License 2.0 4 votes vote down vote up
@Override
public void set(View object, Float value) {
    object.setAlpha(value);
}
 
Example 19
public static void setAlpha(View view, float value) {
    view.setAlpha(value);
}
 
Example 20
@Override
public void setProgress(View view, float progress) {
    view.setAlpha(1f - progress);
}