示例#1
0
  @Override
  protected void onFinishInflate() {
    super.onFinishInflate();
    mLoadingView = findViewById(R.id.loading_view);
    mContentView = findViewById(R.id.content_view);
    mLoadFailView = findViewById(R.id.loading_fail_view);
    mReloadBtn = (TextView) findViewById(R.id.reloadBtn);
    mReloadBtn.setText(Html.fromHtml(mContext.getResources().getString(R.string.tip_reload)));
    mReloadBtn.setOnClickListener(
        new OnClickListener() {

          @Override
          public void onClick(View v) {
            showLoadingView();
            if (null != mCallback) {
              mCallback.onReloadForFail(TabMainView.this);
            }
          }
        });

    mViewPager = (ViewPager) findViewById(R.id.hot_event);
    ViewCompat.setOverScrollMode(mViewPager, ViewCompat.OVER_SCROLL_NEVER);
    mCircleContainer = (LinearLayout) findViewById(R.id.circle_container);
    mCategoryGrid = (GridView) findViewById(R.id.category_grid);
  }
 public void setOverScrollMode(int overScrollMode) {
   if (overScrollMode < ViewCompat.OVER_SCROLL_ALWAYS
       || overScrollMode > ViewCompat.OVER_SCROLL_NEVER)
     throw new IllegalArgumentException("Unknown overscroll mode: " + overScrollMode);
   if (this.view == null) throw new IllegalStateException("view == null");
   this.overScrollMode = overScrollMode;
   ViewCompat.setOverScrollMode(view, overScrollMode);
 }
  @Override
  public void onMeasure(
      RecyclerView.Recycler recycler, RecyclerView.State state, int widthSpec, int heightSpec) {
    final int widthMode = View.MeasureSpec.getMode(widthSpec);
    final int heightMode = View.MeasureSpec.getMode(heightSpec);

    final int widthSize = View.MeasureSpec.getSize(widthSpec);
    final int heightSize = View.MeasureSpec.getSize(heightSpec);

    final boolean hasWidthSize = widthMode != View.MeasureSpec.UNSPECIFIED;
    final boolean hasHeightSize = heightMode != View.MeasureSpec.UNSPECIFIED;

    final boolean exactWidth = widthMode == View.MeasureSpec.EXACTLY;
    final boolean exactHeight = heightMode == View.MeasureSpec.EXACTLY;

    final int unspecified = makeUnspecifiedSpec();

    if (exactWidth && exactHeight) {
      // in case of exact calculations for both dimensions let's use default "onMeasure"
      // implementation
      super.onMeasure(recycler, state, widthSpec, heightSpec);
      return;
    }

    final boolean vertical = getOrientation() == VERTICAL;

    initChildDimensions(widthSize, heightSize, vertical);

    int width = 0;
    int height = 0;

    // it's possible to get scrap views in recycler which are bound to old (invalid) adapter
    // entities. This
    // happens because their invalidation happens after "onMeasure" method. As a workaround let's
    // clear the
    // recycler now (it should not cause any performance issues while scrolling as "onMeasure" is
    // never
    // called whiles scrolling)
    recycler.clear();

    final int stateItemCount = state.getItemCount();
    final int adapterItemCount = getItemCount();
    // adapter always contains actual data while state might contain old data (f.e. data before the
    // animation is
    // done). As we want to measure the view with actual data we must use data from the adapter and
    // not from  the
    // state
    for (int i = 0; i < adapterItemCount; i++) {
      if (vertical) {
        if (!hasChildSize) {
          if (i < stateItemCount) {
            // we should not exceed state count, otherwise we'll get IndexOutOfBoundsException. For
            // such items
            // we will use previously calculated dimensions
            measureChild(recycler, i, widthSize, unspecified, childDimensions);
          } else {
            logMeasureWarning(i);
          }
        }
        height += childDimensions[CHILD_HEIGHT];
        if (i == 0) {
          width = childDimensions[CHILD_WIDTH];
        }
        if (hasHeightSize && height >= heightSize) {
          break;
        }
      } else {
        if (!hasChildSize) {
          if (i < stateItemCount) {
            // we should not exceed state count, otherwise we'll get IndexOutOfBoundsException. For
            // such items
            // we will use previously calculated dimensions
            measureChild(recycler, i, unspecified, heightSize, childDimensions);
          } else {
            logMeasureWarning(i);
          }
        }
        width += childDimensions[CHILD_WIDTH];
        if (i == 0) {
          height = childDimensions[CHILD_HEIGHT];
        }
        if (hasWidthSize && width >= widthSize) {
          break;
        }
      }
    }

    if (exactWidth) {
      width = widthSize;
    } else {
      width += getPaddingLeft() + getPaddingRight();
      if (hasWidthSize) {
        width = Math.min(width, widthSize);
      }
    }

    if (exactHeight) {
      height = heightSize;
    } else {
      height += getPaddingTop() + getPaddingBottom();
      if (hasHeightSize) {
        height = Math.min(height, heightSize);
      }
    }

    setMeasuredDimension(width, height);

    if (view != null && overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS) {
      final boolean fit =
          (vertical && (!hasHeightSize || height < heightSize))
              || (!vertical && (!hasWidthSize || width < widthSize));

      ViewCompat.setOverScrollMode(
          view, fit ? ViewCompat.OVER_SCROLL_NEVER : ViewCompat.OVER_SCROLL_ALWAYS);
    }
  }