android.support.v7.widget.LinearLayoutManager#getOrientation ( )源码实例Demo

下面列出了android.support.v7.widget.LinearLayoutManager#getOrientation ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： ViewToImage 文件： ViewToImageUtil.java

/**
 * RecyclerView转换成bitmap
 *
 * @param recyclerView
 * @return
 */
public static List<BitmapWithHeight> getWholeRecyclerViewItemsToBitmap(final RecyclerView recyclerView) {
    List<BitmapWithHeight> list = new ArrayList<>();
    if (recyclerView == null || recyclerView.getAdapter() == null) {
        return list;
    }

    if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager manager = (LinearLayoutManager) recyclerView.getLayoutManager();
        if (manager.getOrientation() == LinearLayoutManager.VERTICAL) {
            int count = manager.getItemCount();
            LogUtils.w(count + "");
            for (int i = 0; i < count; i++) {
                View childView = manager.findViewByPosition(i);
                // TODO: 1/25/16  childView不可见部分为null，无法截长图
                if (childView != null) {
                    list.add(getSimpleViewToBitmap(childView, recyclerView.getMeasuredWidth()));
                }
            }
        } else {
            list.add(getSimpleViewToBitmap(recyclerView, recyclerView.getMeasuredWidth()));
        }
    }

    return list;
}

源代码2 项目： LazyRecyclerAdapter 文件： BindItemDecoration.java

@Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
    super.onDraw(c, parent, state);
    if (dataSize == 0) {
        return;
    }
    if (parent.getLayoutManager() != null) {
        RecyclerView.LayoutManager layoutManager = parent.getLayoutManager();
        //根据布局管理器绘制边框
        if (layoutManager instanceof LinearLayoutManager && !(layoutManager instanceof GridLayoutManager)) {
            //线性的
            LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
            if (linearLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
                drawLineVertical(c, parent);
            } else {
                drawLineHorizontal(c, parent);
            }
        } else {
            if (getOrientation(layoutManager) == OrientationHelper.HORIZONTAL) {
                drawGridHorizontal(c, parent);
            } else {
                drawGridVertical(c, parent);
            }
        }
    }
}

源代码3 项目： ReadMoreOption 文件： MainActivity.java

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        RecyclerView recyclerView = (RecyclerView)findViewById(R.id.my_recycler_view);
        LinearLayoutManager mLayoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(mLayoutManager);
        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),
                mLayoutManager.getOrientation());
        recyclerView.addItemDecoration(dividerItemDecoration);
        MyAdapter mAdapter = new MyAdapter(this);
        recyclerView.setAdapter(mAdapter);


//        TextView tv = (TextView)findViewById(R.id.tv);
//        tv.setText(getString(R.string.dummy_text));
//
//        ReadMoreOption readMoreOption = new ReadMoreOption.Builder(this)
//              // Optional parameters
//                .textLength(3, ReadMoreOption.TYPE_LINE) //OR
//              //.textLength(300, ReadMoreOption.TYPE_CHARACTER)
//                .moreLabel("MORE")
//                .lessLabel("LESS")
//                .moreLabelColor(Color.RED)
//                .lessLabelColor(Color.BLUE)
//                .labelUnderLine(true)
//                .expandAnimation(true)
//                .build();
//        readMoreOption.addReadMoreTo(tv, getString(R.string.dummy_text));

    }

源代码4 项目： citra_android 文件： DividerItemDecoration.java

private int getOrientation(RecyclerView parent)
{
  if (parent.getLayoutManager() instanceof LinearLayoutManager)
  {
    LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager();
    return layoutManager.getOrientation();
  }
  else
  {
    throw new IllegalStateException(
            "DividerItemDecoration can only be used with a LinearLayoutManager.");
  }
}

源代码5 项目： QuickReturn 文件： DividerItemDecoration.java

private int getOrientation(RecyclerView parent) {
    if (parent.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager();
        return layoutManager.getOrientation();
    } else {
        throw new IllegalStateException(
                "DividerItemDecoration can only be used with a LinearLayoutManager.");
    }
}

源代码6 项目： YAAB 文件： FolderChooserPresenter.java

public void initializeList(RecyclerView rv) {
    LinearLayoutManager lm = new LinearLayoutManager(context);
    rv.setLayoutManager(lm);
    adapter = new FolderChooserAdapter(context, new ArrayList<Folder>(), this);
    DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(rv.getContext(),
            lm.getOrientation());
    rv.addItemDecoration(dividerItemDecoration);
    rv.setAdapter(adapter);
    interactor.loadFolders(null);
}

源代码7 项目： YAAB 文件： AllAudioBookPresenter.java

public void setRecycler(RecyclerView rv) {
    LinearLayoutManager lm = new LinearLayoutManager(context);
    rv.setLayoutManager(lm);
    DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(rv.getContext(),
            lm.getOrientation());
    rv.addItemDecoration(dividerItemDecoration);
    ArrayList<AudioBook> items = new ArrayList<>();
    adapter = new AudioBookAdapter(context, items, this);
    rv.setAdapter(adapter);
    interactor.loadAllAudioBooks();
}

源代码8 项目： AndroidBase 文件： FamiliarDefaultItemDecoration.java

private void initLayoutManagerType() {
    this.mLayoutManagerType = mRecyclerViewListener.getCurLayoutManagerType();
    RecyclerView.LayoutManager layoutManager = mRecyclerViewListener.getCurLayoutManager();
    switch (mLayoutManagerType) {
        case FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_LINEAR:
            LinearLayoutManager curLinearLayoutManager = (LinearLayoutManager)layoutManager;
            if (curLinearLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
                mOrientation = OrientationHelper.HORIZONTAL;
            } else {
                mOrientation = OrientationHelper.VERTICAL;
            }
            break;
        case FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_GRID:
            GridLayoutManager curGridLayoutManager = (GridLayoutManager)layoutManager;
            mGridSpanCount = curGridLayoutManager.getSpanCount();
            if (curGridLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
                mOrientation = OrientationHelper.HORIZONTAL;
            } else {
                mOrientation = OrientationHelper.VERTICAL;
            }
            break;
        case FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_STAGGERED_GRID:
            StaggeredGridLayoutManager curStaggeredGridLayoutManager = (StaggeredGridLayoutManager)layoutManager;
            mGridSpanCount = curStaggeredGridLayoutManager.getSpanCount();
            if (curStaggeredGridLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
                mOrientation = OrientationHelper.HORIZONTAL;
            } else {
                mOrientation = OrientationHelper.VERTICAL;
            }
            break;
        default:
            this.mLayoutManagerType = FamiliarRecyclerView.LAYOUT_MANAGER_TYPE_LINEAR;
    }

    initDivisible();
}

源代码9 项目： AndroidTVWidget 文件： RecyclerViewTV.java

/**
 * 判断是否为横向布局
 */
private boolean isHorizontalLayoutManger() {
    LayoutManager lm = getLayoutManager();
    if (lm != null) {
        if (lm instanceof LinearLayoutManager) {
            LinearLayoutManager llm = (LinearLayoutManager) lm;
            return LinearLayoutManager.HORIZONTAL == llm.getOrientation();
        }
        if (lm instanceof GridLayoutManager) {
            GridLayoutManager glm = (GridLayoutManager) lm;
            return GridLayoutManager.HORIZONTAL == glm.getOrientation();
        }
    }
    return false;
}

源代码10 项目： Android-tv-widget 文件： RecyclerViewTV.java

/**
 * 判断是否为横向布局
 */
private boolean isHorizontalLayoutManger() {
    LayoutManager lm = getLayoutManager();
    if (lm != null) {
        if (lm instanceof LinearLayoutManager) {
            LinearLayoutManager llm = (LinearLayoutManager) lm;
            return LinearLayoutManager.HORIZONTAL == llm.getOrientation();
        }
        if (lm instanceof GridLayoutManager) {
            GridLayoutManager glm = (GridLayoutManager) lm;
            return GridLayoutManager.HORIZONTAL == glm.getOrientation();
        }
    }
    return false;
}

源代码11 项目： materialup 文件： DividerItemDecoration.java

private int getOrientation(RecyclerView parent) {
    if (parent.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager();
        return layoutManager.getOrientation();
    } else
        throw new IllegalStateException("DividerItemDecoration can only be used with a LinearLayoutManager.");
}

源代码12 项目： screenrecorder 文件： FolderChooser.java

private void initRecyclerView() {
    rv.setHasFixedSize(true);
    LinearLayoutManager layoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false);
    rv.setLayoutManager(layoutManager);
    DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(getContext(), layoutManager.getOrientation());
    rv.addItemDecoration(dividerItemDecoration);
    if (!isDirectoryEmpty()) {
        adapter = new DirectoryRecyclerAdapter(getContext(), this, directories);
        rv.setAdapter(adapter);
    }
    tv_currentDir.setText(currentDir.getPath());
}

源代码13 项目： droidddle 文件： DividerItemDecoration.java

private int getOrientation(RecyclerView parent) {
    if (parent.getLayoutManager() instanceof LinearLayoutManager) {
        LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager();
        return layoutManager.getOrientation();
    } else
        throw new IllegalStateException("DividerItemDecoration can only be used with a LinearLayoutManager.");
}

源代码14 项目： SwipeRecyclerView 文件： DefineActivity.java

@Override
public int onDragFlags(RecyclerView recyclerView, RecyclerView.ViewHolder targetViewHolder) {
    int adapterPosition = targetViewHolder.getAdapterPosition();
    if (adapterPosition == 0) { // 这里让HeaderView不能拖拽。
        return OnItemMovementListener.INVALID;// 返回无效的方向。
    }

    // 真实的Position：通过ViewHolder拿到的position都需要减掉HeadView的数量。
    int position = adapterPosition - mRecyclerView.getHeaderCount();

    // 假如让普通Item的第一个不能拖拽。
    if (position == 0) {
        return OnItemMovementListener.INVALID;// 返回无效的方向。
    }

    RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
    if (layoutManager instanceof GridLayoutManager) {
        // Grid可以上下左右拖拽。
        return OnItemMovementListener.LEFT | OnItemMovementListener.UP | OnItemMovementListener.RIGHT |
            OnItemMovementListener.DOWN;
    } else if (layoutManager instanceof LinearLayoutManager) {
        LinearLayoutManager linearLayoutManager = (LinearLayoutManager)layoutManager;

        // 横向List只能左右拖拽。
        if (linearLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
            return (OnItemMovementListener.LEFT | OnItemMovementListener.RIGHT);
        }
        // 竖向List只能上下拖拽。
        else {
            return OnItemMovementListener.UP | OnItemMovementListener.DOWN;
        }
    }
    return OnItemMovementListener.INVALID;// 返回无效的方向。
}

源代码15 项目： LazyRecyclerAdapter 文件： BindItemDecoration.java

/**
 * 配置linear模式的item rect
 */
void linearRect(RecyclerView.LayoutManager layoutManager, RecyclerView parent, View view, Rect outRect) {
    LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
    int currentPosition = parent.getChildAdapterPosition(view);
    //去掉header，上下拉item
    if (currentPosition >= offsetPosition && currentPosition < endDataPosition) {
        if (linearLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL) {
            if (linearLayoutManager.getReverseLayout()) {
                outRect.left = space;
            } else {
                outRect.right = space;
            }
        } else {
            if (linearLayoutManager.getReverseLayout()) {
                outRect.top = space;
            } else {
                outRect.bottom = space;
            }
        }
    }
    //第一行顶部间隔
    if (needFirstTopEdge && currentPosition == offsetPosition && currentPosition != endDataPosition) {
        if (orientation == LinearLayoutManager.HORIZONTAL) {
            if (linearLayoutManager.getReverseLayout()) {
                outRect.right = space;
            } else {
                outRect.left = space;
            }
        } else {
            if (linearLayoutManager.getReverseLayout()) {
                outRect.bottom = space;
            } else {
                outRect.top = space;
            }
        }
    }
}

源代码16 项目： AndroidSchool 文件： DividerItemDecoration.java

private int getOrientation(RecyclerView parent) {
    if (mOrientation == -1) {
        if (parent.getLayoutManager() instanceof LinearLayoutManager) {
            LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager();
            mOrientation = layoutManager.getOrientation();
        }
    }
    return mOrientation;
}

源代码17 项目： ChatApp 文件： ChatFragment.java

@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
    final View view = inflater.inflate(R.layout.fragment_chat, container, false);

    String currentUserId = FirebaseAuth.getInstance().getCurrentUser().getUid();

    // Initialize Chat Database

    DatabaseReference chatDatabase = FirebaseDatabase.getInstance().getReference().child("Chat").child(currentUserId);
    chatDatabase.keepSynced(true); // For offline use

    // RecyclerView related

    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
    linearLayoutManager.setReverseLayout(true);
    linearLayoutManager.setStackFromEnd(true);

    RecyclerView recyclerView = view.findViewById(R.id.chat_recycler);
    recyclerView.setHasFixedSize(true);
    recyclerView.setLayoutManager(linearLayoutManager);

    DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(), linearLayoutManager.getOrientation());
    recyclerView.addItemDecoration(mDividerItemDecoration);

    // Initializing adapter

    FirebaseRecyclerOptions<Chat> options = new FirebaseRecyclerOptions.Builder<Chat>().setQuery(chatDatabase.orderByChild("timestamp"), Chat.class).build();

    adapter = new FirebaseRecyclerAdapter<Chat, ChatHolder>(options)
    {
        @Override
        public ChatHolder onCreateViewHolder(ViewGroup parent, int viewType)
        {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.user, parent, false);

            return new ChatHolder(getActivity(), view, getContext());
        }

        @Override
        protected void onBindViewHolder(final ChatHolder holder, int position, final Chat model)
        {
            final String userid = getRef(position).getKey();

            holder.setHolder(userid, model.getMessage(), model.getTimestamp(), model.getSeen());
            holder.getView().setOnClickListener(new View.OnClickListener()
            {
                @Override
                public void onClick(View view)
                {
                    Intent chatIntent = new Intent(getContext(), ChatActivity.class);
                    chatIntent.putExtra("userid", userid);
                    startActivity(chatIntent);
                }
            });
        }

        @Override
        public void onDataChanged()
        {
            super.onDataChanged();

            TextView text = view.findViewById(R.id.f_chat_text);

            if(adapter.getItemCount() == 0)
            {
                text.setVisibility(View.VISIBLE);
            }
            else
            {
                text.setVisibility(View.GONE);
            }
        }
    };

    recyclerView.setAdapter(adapter);
    return view;
}

源代码18 项目： Android-tv-widget 文件： RecyclerViewTV.java

/**
 * 判断是垂直，还是横向.
 */
private boolean isVertical() {
    LinearLayoutManager layout = (LinearLayoutManager) getLayoutManager();
    return layout.getOrientation() == LinearLayoutManager.VERTICAL;
}

源代码19 项目： ExpandableRecyclerview-Databinding 文件： DividerItemDecoration.java

protected int getOrientation(LinearLayoutManager layoutManager) {
    if (layoutManager != null) {
        return layoutManager.getOrientation();
    }
    return -1;
}

源代码20 项目： fingerpoetry-android 文件： DragItemRecyclerView.java

private void updateDragPositionAndScroll() {
    View view = findChildView(mDragItem.getX(), mDragItem.getY());
    int newPos = getChildLayoutPosition(view);
    if (newPos == NO_POSITION) {
        return;
    }

    LinearLayoutManager layoutManager = (LinearLayoutManager) getLayoutManager();
    if (shouldChangeItemPosition(newPos)) {
        if (mDisableReorderWhenDragging) {
            mAdapter.setDropTargetId(mAdapter.getItemId(newPos));
            mAdapter.notifyDataSetChanged();
        } else {
            changePosition = true;
            int pos = layoutManager.findFirstVisibleItemPosition();
            View posView = layoutManager.findViewByPosition(pos);
            mAdapter.changeItemPosition(mDragItemPosition, newPos);
            mDragItemPosition = newPos;

            // Since notifyItemMoved scrolls the list we need to scroll back to where we were after the position change.
            if (layoutManager.getOrientation() == LinearLayoutManager.VERTICAL) {
                int topMargin = ((MarginLayoutParams) posView.getLayoutParams()).topMargin;
                layoutManager.scrollToPositionWithOffset(pos, posView.getTop() - topMargin);
            } else {
                int leftMargin = ((MarginLayoutParams) posView.getLayoutParams()).leftMargin;
                layoutManager.scrollToPositionWithOffset(pos, posView.getLeft() - leftMargin);
            }
        }
    }

    boolean lastItemReached = false;
    boolean firstItemReached = false;
    int top = mClipToPadding ? getPaddingTop() : 0;
    int bottom = mClipToPadding ? getHeight() - getPaddingBottom() : getHeight();
    int left = mClipToPadding ? getPaddingLeft() : 0;
    int right = mClipToPadding ? getWidth() - getPaddingRight() : getWidth();
    ViewHolder lastChild = findViewHolderForLayoutPosition(mAdapter.getItemCount() - 1);
    ViewHolder firstChild = findViewHolderForLayoutPosition(0);

    // Check if first or last item has been reached
    if (layoutManager.getOrientation() == LinearLayoutManager.VERTICAL) {
        if (lastChild != null && lastChild.itemView.getBottom() <= bottom) {
            lastItemReached = true;
        }
        if (firstChild != null && firstChild.itemView.getTop() >= top) {
            firstItemReached = true;
        }
    } else {
        if (lastChild != null && lastChild.itemView.getRight() <= right) {
            lastItemReached = true;
        }
        if (firstChild != null && firstChild.itemView.getLeft() >= left) {
            firstItemReached = true;
        }
    }

    // Start auto scroll if at the edge
    if (layoutManager.getOrientation() == LinearLayoutManager.VERTICAL) {
        if (mDragItem.getY() > getHeight() - view.getHeight() / 2 && !lastItemReached) {
            mAutoScroller.startAutoScroll(AutoScroller.ScrollDirection.UP);
        } else if (mDragItem.getY() < view.getHeight() / 2 && !firstItemReached) {
            mAutoScroller.startAutoScroll(AutoScroller.ScrollDirection.DOWN);
        } else {
            mAutoScroller.stopAutoScroll();
        }
    } else {
        if (mDragItem.getX() > getWidth() - view.getWidth() / 2 && !lastItemReached) {
            mAutoScroller.startAutoScroll(AutoScroller.ScrollDirection.LEFT);
        } else if (mDragItem.getX() < view.getWidth() / 2 && !firstItemReached) {
            mAutoScroller.startAutoScroll(AutoScroller.ScrollDirection.RIGHT);
        } else {
            mAutoScroller.stopAutoScroll();
        }
    }
}

方法所在类

android.support.v7.widget.LinearLayoutManager