以下是代码:MainActivity:recyclerView是一个RecyclerViewrecyclerView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
UpdaterController controller = mUpdaterService == null ? null : mUpdaterService.getUpdaterController();
if(controller != null && mAdapter != null) {
List<UpdateInfo> updates = controller.getUpdates();
for (int i = 0; i < recyclerView.getChildCount(); i++) {
UpdateInfo update = updates.get(i);
View view = recyclerView.getLayoutManager().findViewByPosition(i);
LinearLayout mBtnsLayout = (LinearLayout) view.findViewById(R.id.update_btns);
ImageButton mAction = (ImageButton) view.findViewById(R.id.update_action);
ImageButton mShowChangelog = (ImageButton) view.findViewById(R.id.show_changelog);
CardView mCard = (CardView) view.findViewById(R.id.update_card);
Space mBtnsSpace = (Space) view.findViewById(R.id.update_btns_space);
OnlineImageView mImageView = view.findViewById(R.id.update_imageView);
int btnsHeight = mBtnsLayout.getMeasuredHeight();
int cardHeight = mCard.getMeasuredHeight();
mBtnsLayout.setLayoutParams((LinearLayout.LayoutParams)Utils.getLayoutParams(btnsHeight, btnsHeight, mBtnsLayout));
mImageView.setImageURL(update.getImageUrl());
int w = ((mImageView.getImageHeight() * mImageView.getImageWidth()) == 0 ? 0 : (cardHeight * mImageView.getImageWidth() / mImageView.getImageHeight()));
mImageView.setLayoutParams((RelativeLayout.LayoutParams)Utils.getLayoutParams(w, cardHeight, mImageView));
mAction.setLayoutParams((LinearLayout.LayoutParams)Utils.getLayoutParams((int) (btnsHeight * 0.6), (int) (btnsHeight * 0.6), mAction));
mShowChangelog.setLayoutParams((LinearLayout.LayoutParams)Utils.getLayoutParams((int) (btnsHeight * 0.3), (int) (btnsHeight * 0.3), mShowChangelog));
mBtnsSpace.setLayoutParams((LinearLayout.LayoutParams)Utils.getLayoutParams(btnsHeight - mAction.getMeasuredHeight() - mShowChangelog.getMeasuredHeight(), btnsHeight, mBtnsSpace));
mAdapter.notifyItemChanged(i);
}
recyclerView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
}
});以下是Utils.getLayoutParams函数:public static ViewGroup.LayoutParams getLayoutParams(int tw, int th, View view) {
ViewGroup.LayoutParams params = view.getLayoutParams();
params.width = tw;
params.height = th;
return params;
}Debug发现,在上面的第一个代码块执行完毕后,各个控件的LayoutParams发生了改变,其中的宽高与传入值相符,而在控件中的mMessuredWidth和mMessuredHeight的值却均没有变化,也就是实际显示的宽高并未改变。这是我的仓库:https://github.com/SF2005/Updater希望能得到个解决方案,或者告诉我,你也不觉得有问题,谢谢各位了!!!!这几天真是烦死我了??
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