Java View.setTranslationY方法代码示例

import android.view.View; //导入方法依赖的package包/类
private Animator createShowItemAnimator(View item) {

        float dx = fab.getX() - item.getX();
        float dy = fab.getY() - item.getY();

        item.setRotation(0f);
        item.setTranslationX(dx);
        item.setTranslationY(dy);

        Animator anim = ObjectAnimator.ofPropertyValuesHolder(
                item,
//                AnimatorUtils.rotation(0f, 720f),
                AnimatorUtils.translationX(dx, 0f),
                AnimatorUtils.translationY(dy, 0f)
        );

        return anim;
    }
 

import android.view.View; //导入方法依赖的package包/类
@Override
public void transformPage(View view, float position) {

    if (position < -1) {
        view.setAlpha(0);

    } else if (position <= 1) {
        view.setAlpha(1);

        view.setTranslationX(view.getWidth() * -position);

        float yPosition = position * view.getHeight();
        view.setTranslationY(yPosition);

    } else {
        view.setAlpha(0);
    }
}
 

import android.view.View; //导入方法依赖的package包/类
protected void transformUnderlyingPage(View page, float position, boolean enter) {
    page.setAlpha(1);
    page.setScaleX(1);
    page.setScaleY(1);
    page.setTranslationX(0);
    page.setTranslationY(0);
    // Avoid overdraw
    page.setVisibility(View.INVISIBLE);
}
 

import android.view.View; //导入方法依赖的package包/类
private void runEnterAnimation(View view, int position) {
    if (position >= ANIMATED_ITEMS_COUNT - 1) {
        return;
    }


    if (scrollDirection == Constants.SCROLL_UP) {
        Log.d(LOG_TAG, "runEnterAnimation_up");
        if (position > lastAnimatedPosition) {
            lastAnimatedPosition = position;
            Log.d(LOG_TAG, "lasAnimated,position" + lastAnimatedPosition + "," + position);
            view.setTranslationY(Utils.getScreenHeight(mContext));
            ObjectAnimator objectAnimator= ObjectAnimator.ofFloat(view,"translationY",0);
            objectAnimator.setDuration(700)
                    .setInterpolator(new DecelerateInterpolator(3.f));
            objectAnimator.start();
        }
    } else {
        Log.d(LOG_TAG, "runEnterAnimation_down");
        if (position < lastAnimatedPosition) {
            Log.d(LOG_TAG, "lasAnimated,position" + lastAnimatedPosition + "," + position);
            lastAnimatedPosition = position;

        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
public void transformPage(View view, float position, boolean horizontal) {
    int pageSize = horizontal ? view.getWidth() : view.getHeight();
    if (position < -1) { // [-Infinity,-1)way off-screen to the left
        view.setAlpha(MIN_ALPHA);
        view.setScaleX(MIN_SCALE);
        view.setScaleY(MIN_SCALE);
    } else if (position <= 1) { // [-1,1]
        float percent = 1 - Math.abs(position);
        float scale = MIN_SCALE + (1 - MIN_SCALE) * percent;
        if (mAdjustTranslate) {
            float horizontalMargin = pageSize * (1 - scale) / 2;
            if (position > 0) {
                if (horizontal) {
                    view.setTranslationX(horizontalMargin);
                } else {
                    view.setTranslationY(horizontalMargin);
                }
            } else {
                if (horizontal) {
                    view.setTranslationX(-horizontalMargin);
                } else {
                    view.setTranslationY(-horizontalMargin);
                }
            }
        }
        view.setScaleX(scale);
        view.setScaleY(scale);
        view.setAlpha(MIN_ALPHA + (1 - MIN_ALPHA) * percent);
    } else { // (1,+Infinity]page is way off-screen to the right.
        view.setAlpha(MIN_ALPHA);
        view.setScaleX(MIN_SCALE);
        view.setScaleY(MIN_SCALE);
    }
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
public void transformPage(View view, float position) {
    float alpha = 0;
    if (0 <= position && position <= 1) {
        alpha = 1 - position;
    } else if (-1 < position && position < 0) {
        alpha = position + 1;
    }
    view.setAlpha(alpha);
    view.setTranslationX(view.getWidth() * -position);
    float yPosition = position * view.getHeight();
    view.setTranslationY(yPosition);
}
 

import android.view.View; //导入方法依赖的package包/类
private void offsetChildAsNeeded(CoordinatorLayout parent, View child, View dependency) {
    float offsetRange = dependency.getTop() + getFinalHeight() - child.getTop();
    int headerOffsetRange = getHeaderOffsetRange();
    if (dependency.getTranslationY() == headerOffsetRange) {
        child.setTranslationY(offsetRange);
    } else if (dependency.getTranslationY() == 0) {
        child.setTranslationY(0);
    } else {
        child.setTranslationY((int) (dependency.getTranslationY() / (getHeaderOffsetRange() * 1.0f) * offsetRange));
    }
}
 

import android.view.View; //导入方法依赖的package包/类
private void runEnterAnimation(View view, int position) {
    if(position >= ANIMATED_ITEMS_COUNT - 1){//加载的item数大于等于屏幕所能装下的item数则动画加载完成(第一次加载前两个item采用动画效果)
        return;
    }
    if(position > lastAnimatedPosition){//lastAnimatedPosition初始值为-1，随position增加不断更新最后一个position的值
        lastAnimatedPosition = position;
        view.setTranslationY(Utils.getScreenHeight(mContext));//起始的Y点坐标为屏幕最下方
        view.animate()
                .translationY(0)
                .setInterpolator(new DecelerateInterpolator(3.f))
                .setDuration(700)
                .start();
    }
}
 

import android.view.View; //导入方法依赖的package包/类
public void slidingByDelta(View view ,float delta){
    if(view == null){
        return;
    }
    view.clearAnimation();
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
        view.setTranslationY(delta);
    }else{
       // ViewHelper.setTranslationY(view, delta);
    }
}
 

import android.view.View; //导入方法依赖的package包/类
public static void resetViewProperty(View view) {
    view.setScaleX(1.0f);
    view.setScaleY(1.0f);
    view.setAlpha(1.0f);
    view.setTranslationX(0);
    view.setTranslationY(0);
    view.setRotation(0);
    view.setRotationX(0);
    view.setRotationY(0);
    view.animate().setStartDelay(0).setListener(null);
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, View child, View target, int dx, int dy, int[] consumed) {
    super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed);
    //dy>0 scroll up;dy<0,scroll down
    float halfOfDis = dy / 4.0f;
    if (!canScroll(child, halfOfDis)) {
        child.setTranslationY(halfOfDis > 0 ? getHeaderOffsetRange() : 0);
    } else {
        child.setTranslationY(child.getTranslationY() - halfOfDis);
    }
    //consumed all scroll behavior after we started Nested Scrolling
    consumed[1] = dy;
}
 

import android.view.View; //导入方法依赖的package包/类
private void applyTranslationToTopChildViews(ViewGroup contentView, float translation) {
    for (int i = 0; i < contentView.getChildCount(); i++) {
        View child = contentView.getChildAt(i);
        if (!(child.getLayoutParams() instanceof FrameLayout.LayoutParams)) continue;

        FrameLayout.LayoutParams layoutParams =
                (FrameLayout.LayoutParams) child.getLayoutParams();
        if (Gravity.TOP == (layoutParams.gravity & Gravity.FILL_VERTICAL)) {
            child.setTranslationY(translation);
            TraceEvent.instant("FullscreenManager:child.setTranslationY()");
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
/**
 * This method handles setting the property values directly in the View object's fields.
 * propertyConstant tells it which property should be set, value is the value to set
 * the property to.
 *
 * @param propertyConstant The property to be set
 * @param value The value to set the property to
 */
private void setValue(int propertyConstant, float value) {
    //final View.TransformationInfo info = mView.mTransformationInfo;
    View v = mView.get();
    if (v != null) {
        switch (propertyConstant) {
            case TRANSLATION_X:
                //info.mTranslationX = value;
                v.setTranslationX(value);
                break;
            case TRANSLATION_Y:
                //info.mTranslationY = value;
                v.setTranslationY(value);
                break;
            case ROTATION:
                //info.mRotation = value;
                v.setRotation(value);
                break;
            case ROTATION_X:
                //info.mRotationX = value;
                v.setRotationX(value);
                break;
            case ROTATION_Y:
                //info.mRotationY = value;
                v.setRotationY(value);
                break;
            case SCALE_X:
                //info.mScaleX = value;
                v.setScaleX(value);
                break;
            case SCALE_Y:
                //info.mScaleY = value;
                v.setScaleY(value);
                break;
            case X:
                //info.mTranslationX = value - v.mLeft;
                v.setX(value);
                break;
            case Y:
                //info.mTranslationY = value - v.mTop;
                v.setY(value);
                break;
            case ALPHA:
                //info.mAlpha = value;
                v.setAlpha(value);
                break;
        }
    }
}
 

import android.view.View; //导入方法依赖的package包/类
public static void setTranslationY(View view, float value) {
    view.setTranslationY(value);
}
 

import android.view.View; //导入方法依赖的package包/类
@Override
public void transformPage(View page, float position) {
    page.setTranslationX(page.getWidth() * -position);
    page.setTranslationY(position < 0 ? position * page.getHeight() : 0f);
}