/** 截取scrollview的屏幕 * */
public static Bitmap getBitmapByView(ScrollView scrollView) {
int h = 0;
Bitmap bitmap = null;
// 获取listView实际高度
for (int i = 0; i < scrollView.getChildCount(); i++) {
h += scrollView.getChildAt(i).getHeight();
// scrollView.getChildAt(i).setBackgroundResource(R.drawable.bg3);
}
Log.d(TAG, "实际高度:" + h);
Log.d(TAG, " 高度:" + scrollView.getHeight());
// 创建对应大小的bitmap
bitmap = Bitmap.createBitmap(scrollView.getWidth(), h, Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(bitmap);
scrollView.draw(canvas);
// 测试输出
FileOutputStream out = null;
try {
out = new FileOutputStream("/sdcard/screen_test.png");
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
if (null != out) {
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
}
} catch (IOException e) {
// TODO: handle exception
}
return bitmap;
}
@Override
public void run() {
int off = mLayout.getMeasuredHeight() - sView.getHeight();
if (off > 0) {
sView.scrollTo(0, off); // 改变滚动条的位置
}
}
public void animateSubjectOut(final SubjectCard materia) {
final List<View> toBeAnimated = new ArrayList<View>();
boolean after = false;
for (SubjectCard mtr : mSubjectCards) {
if (after) toBeAnimated.add(mtr);
if (mtr == materia) after = true;
}
toBeAnimated.add(mAddButton);
final int numberToBeAnimated = toBeAnimated.size();
int maxScroll = mScrollView.getChildAt(0).getHeight() - mScrollView.getHeight(),
materiaHeight = materia.getHeight();
final int initScroll = mScrollView.getScrollY(),
scrollBy =
((maxScroll < initScroll + materiaHeight)
? Math.max(maxScroll - materiaHeight, 0)
: initScroll)
- initScroll;
ValueAnimator listAnimator = ValueAnimator.ofFloat(0, -materiaHeight);
listAnimator.setInterpolator(new DecelerateInterpolator(3.2f));
listAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
float value = (Float) animation.getAnimatedValue();
for (int i = 0; i < numberToBeAnimated; i++)
ViewHelper.setTranslationY(toBeAnimated.get(i), value);
ViewHelper.setScrollY(
mScrollView, (int) (initScroll + scrollBy * animation.getAnimatedFraction()));
}
});
listAnimator.addListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mSubjectCards.remove(materia);
mSubjectsLayout.removeView(materia);
mSqlHelper.remove(materia.getData().getSqlID());
updateTotal();
mScrollView.setVerticalScrollBarEnabled(true);
mScrollView.setOnTouchListener(null);
for (View mtr : toBeAnimated) ViewHelper.setTranslationY(mtr, 0);
}
});
listAnimator.setDuration(700);
mScrollView.setVerticalScrollBarEnabled(false);
mScrollView.setOnTouchListener(
new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
return true;
}
}); // disable user scrolling during the animation
if (ViewHelper.getTranslationX(materia) == 0) materia.swipeRight(0, 0);
listAnimator.setStartDelay(500);
listAnimator.start();
}
/**
* Copy From ScrollView (API Level >= 14)
*
* @param direction Negative to check scrolling up, positive to check scrolling down.
* @return true if the scrollView can be scrolled in the specified direction, false otherwise
*/
private boolean scrollViewCanScrollVertically(ScrollView scrollView, int direction) {
final int offset = Math.max(0, scrollView.getScrollY());
final int range = computeVerticalScrollRange(scrollView) - scrollView.getHeight();
if (range == 0) return false;
if (direction < 0) { // scroll up
return offset > 0;
} else { // scroll down
return offset < range - 1;
}
}
@MediumTest
public void testPreconditions() {
assertTrue(
"top text should be larger than screen", mTopText.getHeight() > mScrollView.getHeight());
assertTrue(
"scroll view should have focus (because nothing else focusable "
+ "is on screen), but "
+ getActivity().getScrollView().findFocus()
+ " does instead",
getActivity().getScrollView().isFocused());
}
public boolean isViewBeingDragged(MotionEvent event, ScrollView view) {
if (view.getChildCount() == 0) {
return true;
}
view.getLocationOnScreen(mViewLocationResult);
final int viewLeft = mViewLocationResult[0], viewTop = mViewLocationResult[1];
mRect.set(viewLeft, viewTop, viewLeft + view.getWidth(), viewTop + view.getHeight());
final int rawX = (int) event.getRawX(), rawY = (int) event.getRawY();
if (mRect.contains(rawX, rawY)) {
return isReadyForPull(view, rawX - mRect.left, rawY - mRect.top);
}
return false;
}
/**
* Copy From ScrollView (API Level >= 14)
*
* <p>The scroll range of a scroll view is the overall height of all of its children.
*/
private int computeVerticalScrollRange(ScrollView scrollView) {
final int count = scrollView.getChildCount();
final int contentHeight =
scrollView.getHeight() - scrollView.getPaddingBottom() - scrollView.getPaddingTop();
if (count == 0) {
return contentHeight;
}
int scrollRange = scrollView.getChildAt(0).getBottom();
final int scrollY = scrollView.getScrollY();
final int overscrollBottom = Math.max(0, scrollRange - contentHeight);
if (scrollY < 0) {
scrollRange -= scrollY;
} else if (scrollY > overscrollBottom) {
scrollRange += scrollY - overscrollBottom;
}
return scrollRange;
}
private void setNextSelectedPositionInt(int position) {
if (mContentScrollView.getHeight() == 0) {
setSelection(position);
return;
}
mSelectedPosition = position;
initItemViewsScrollYArr();
mContentScrollView.scrollTo(
mContentScrollView.getScrollX(), mItemViewsScrollYArr[mSelectedPosition]);
if (mOnItemSelectedListener != null) {
mOnItemSelectedListener.onItemSelected(
this,
mCachedSubViewList.get(mSelectedPosition),
mSelectedPosition,
mAdapter.getItemId(mSelectedPosition));
}
}
/**
* Sets the currently selected item.
*
* @param position
*/
public void setSelection(final int position) {
if (mAdapter == null || mAdapter.getCount() < 1) {
throw new NullPointerException("Currently no items!");
}
if (position < 0 || position >= mAdapter.getCount()) {
throw new IllegalArgumentException("Position out of index");
}
if (mContentScrollView.getHeight() == 0) {
mContentScrollView.postDelayed(
new Runnable() {
@Override
public void run() {
setNextSelectedPositionInt(position);
}
},
1);
} else {
setNextSelectedPositionInt(position);
}
}
