/** 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;
}
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 static boolean canScrollViewScroll(ScrollView sv) {
if (sv.getChildCount() == 0) return false;
final int childHeight = sv.getChildAt(0).getMeasuredHeight();
return sv.getMeasuredHeight() - sv.getPaddingTop() - sv.getPaddingBottom() < childHeight;
}
