Examples with LayoutParams android.support.v7.widget.RecyclerView.LayoutParams used on opensource projects

Example 21 with LayoutParams

use of android.support.v7.widget.RecyclerView.LayoutParams in project vlayout by alibaba.

the class MainActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);
    final RecyclerView recyclerView = (RecyclerView) findViewById(R.id.main_view);
    VirtualLayoutManager layoutManager = new VirtualLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);
    //layoutManager.setReverseLayout(true);
    recyclerView.addItemDecoration(new RecyclerView.ItemDecoration() {

        public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
            outRect.set(10, 10, 10, 10);
        }
    });
    final List<LayoutHelper> helpers = new LinkedList<>();
    final GridLayoutHelper gridLayoutHelper = new GridLayoutHelper(4);
    gridLayoutHelper.setItemCount(25);
    final ScrollFixLayoutHelper scrollFixLayoutHelper = new ScrollFixLayoutHelper(FixLayoutHelper.TOP_RIGHT, 100, 100);
    helpers.add(DefaultLayoutHelper.newHelper(7));
    helpers.add(scrollFixLayoutHelper);
    helpers.add(DefaultLayoutHelper.newHelper(2));
    helpers.add(gridLayoutHelper);
    layoutManager.setLayoutHelpers(helpers);
    recyclerView.setAdapter(new VirtualLayoutAdapter(layoutManager) {

        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            return new MainViewHolder(new TextView(MainActivity.this));
        }

        @Override
        public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
            VirtualLayoutManager.LayoutParams layoutParams = new VirtualLayoutManager.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 300);
            holder.itemView.setLayoutParams(layoutParams);
            ((TextView) holder.itemView).setText(Integer.toString(position));
            if (position == 7) {
                layoutParams.height = 60;
                layoutParams.width = 60;
            } else if (position > 35) {
                layoutParams.height = 200 + (position - 30) * 100;
            }
            if (position > 35) {
                holder.itemView.setBackgroundColor(0x66cc0000 + (position - 30) * 128);
            } else if (position % 2 == 0) {
                holder.itemView.setBackgroundColor(0xaa00ff00);
            } else {
                holder.itemView.setBackgroundColor(0xccff00ff);
            }
        }

        @Override
        public int getItemCount() {
            return 40;
        }
    });
    new Handler(Looper.getMainLooper()).postDelayed(new Runnable() {

        @Override
        public void run() {
            recyclerView.scrollToPosition(7);
            recyclerView.getAdapter().notifyDataSetChanged();
        }
    }, 6000);
}

Example 22 with LayoutParams

use of android.support.v7.widget.RecyclerView.LayoutParams in project vlayout by alibaba.

the class TestActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);
    final RecyclerView recyclerView = (RecyclerView) findViewById(R.id.main_view);
    StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL);
    recyclerView.setLayoutManager(layoutManager);
    findViewById(R.id.jump).setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            EditText position = (EditText) findViewById(R.id.position);
            if (!TextUtils.isEmpty(position.getText())) {
                try {
                    int pos = Integer.parseInt(position.getText().toString());
                    recyclerView.scrollToPosition(pos);
                } catch (Exception e) {
                    Log.e("VlayoutActivity", e.getMessage(), e);
                }
            }
        }
    });
    recyclerView.addItemDecoration(new RecyclerView.ItemDecoration() {

        public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
            outRect.set(4, 4, 4, 4);
        }
    });
    recyclerView.setAdapter(new RecyclerView.Adapter() {

        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            //                        TextView view = (TextView) LayoutInflater.from(TestActivity.this).inflate(R.layout.item, parent, false);
            //                        FrameLayout frameLayout = new FrameLayout(TestActivity.this);
            FrameLayout frameLayout = (FrameLayout) LayoutInflater.from(TestActivity.this).inflate(R.layout.item, parent, false);
            ;
            //                        frameLayout.addView(view);
            return new MainViewHolder(frameLayout);
        }

        @Override
        public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
            FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 300);
            layoutParams.height = (int) (200 + (position % 15) * 10);
            holder.itemView.findViewById(R.id.title).setLayoutParams(layoutParams);
            if (position == 30) {
                StaggeredGridLayoutManager.LayoutParams lp = new StaggeredGridLayoutManager.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
                lp.setFullSpan(true);
                holder.itemView.setLayoutParams(lp);
            } else {
                ViewGroup.LayoutParams lp = holder.itemView.getLayoutParams();
                if (lp instanceof StaggeredGridLayoutManager.LayoutParams) {
                    ((StaggeredGridLayoutManager.LayoutParams) lp).setFullSpan(false);
                }
            }
            ((TextView) holder.itemView.findViewById(R.id.title)).setText(Integer.toString(position));
        }

        @Override
        public int getItemCount() {
            return 60;
        }
    });
}

Example 23 with LayoutParams

use of android.support.v7.widget.RecyclerView.LayoutParams in project vlayout by alibaba.

the class VLayoutActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);
    mFirstText = (TextView) findViewById(R.id.first);
    mLastText = (TextView) findViewById(R.id.last);
    mCountText = (TextView) findViewById(R.id.count);
    mTotalOffsetText = (TextView) findViewById(R.id.total_offset);
    final RecyclerView recyclerView = (RecyclerView) findViewById(R.id.main_view);
    findViewById(R.id.jump).setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            EditText position = (EditText) findViewById(R.id.position);
            if (!TextUtils.isEmpty(position.getText())) {
                try {
                    int pos = Integer.parseInt(position.getText().toString());
                    recyclerView.scrollToPosition(pos);
                } catch (Exception e) {
                    Log.e("VlayoutActivity", e.getMessage(), e);
                }
            } else {
                recyclerView.requestLayout();
            }
        }
    });
    final VirtualLayoutManager layoutManager = new VirtualLayoutManager(this);
    recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {

        @Override
        public void onScrollStateChanged(RecyclerView recyclerView, int scrollState) {
        }

        @Override
        public void onScrolled(RecyclerView recyclerView, int i, int i2) {
            mFirstText.setText("First: " + layoutManager.findFirstVisibleItemPosition());
            mLastText.setText("Existing: " + MainViewHolder.existing + " Created: " + MainViewHolder.createdTimes);
            mCountText.setText("Count: " + recyclerView.getChildCount());
            mTotalOffsetText.setText("Total Offset: " + layoutManager.getOffsetToStart());
        }
    });
    recyclerView.setLayoutManager(layoutManager);
    // layoutManager.setReverseLayout(true);
    RecyclerView.ItemDecoration itemDecoration = new RecyclerView.ItemDecoration() {

        public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
            int position = ((LayoutParams) view.getLayoutParams()).getViewPosition();
            outRect.set(4, 4, 4, 4);
        }
    };
    final RecyclerView.RecycledViewPool viewPool = new RecyclerView.RecycledViewPool();
    recyclerView.setRecycledViewPool(viewPool);
    // recyclerView.addItemDecoration(itemDecoration);
    viewPool.setMaxRecycledViews(0, 20);
    final DelegateAdapter delegateAdapter = new DelegateAdapter(layoutManager, true);
    recyclerView.setAdapter(delegateAdapter);
    List<DelegateAdapter.Adapter> adapters = new LinkedList<>();
    if (BANNER_LAYOUT) {
        adapters.add(new SubAdapter(this, new LinearLayoutHelper(), 1) {

            @Override
            public void onViewRecycled(MainViewHolder holder) {
                if (holder.itemView instanceof ViewPager) {
                    ((ViewPager) holder.itemView).setAdapter(null);
                }
            }

            @Override
            public MainViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                if (viewType == 1)
                    return new MainViewHolder(LayoutInflater.from(VLayoutActivity.this).inflate(R.layout.view_pager, parent, false));
                return super.onCreateViewHolder(parent, viewType);
            }

            @Override
            public int getItemViewType(int position) {
                return 1;
            }

            @Override
            protected void onBindViewHolderWithOffset(MainViewHolder holder, int position, int offsetTotal) {
            }

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                if (holder.itemView instanceof ViewPager) {
                    ViewPager viewPager = (ViewPager) holder.itemView;
                    viewPager.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 200));
                    // from position to get adapter
                    viewPager.setAdapter(new PagerAdapter(this, viewPool));
                }
            }
        });
    }
    if (FLOAT_LAYOUT) {
        FloatLayoutHelper layoutHelper = new FloatLayoutHelper();
        layoutHelper.setAlignType(FixLayoutHelper.BOTTOM_RIGHT);
        layoutHelper.setDefaultLocation(100, 400);
        LayoutParams layoutParams = new LayoutParams(150, 150);
        adapters.add(new SubAdapter(this, layoutHelper, 1, layoutParams));
    }
    if (LINEAR_LAYOUT) {
        LinearLayoutHelper layoutHelper1 = new LinearLayoutHelper();
        layoutHelper1.setAspectRatio(2.0f);
        LinearLayoutHelper layoutHelper2 = new LinearLayoutHelper();
        layoutHelper2.setAspectRatio(4.0f);
        layoutHelper2.setDividerHeight(10);
        layoutHelper2.setMargin(10, 30, 10, 10);
        layoutHelper2.setPadding(10, 30, 10, 10);
        layoutHelper2.setBgColor(0xFFF5A623);
        adapters.add(new SubAdapter(this, layoutHelper1, 1));
        adapters.add(new SubAdapter(this, layoutHelper2, 6) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                if (position % 2 == 0) {
                    LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 300);
                    layoutParams.mAspectRatio = 5;
                    holder.itemView.setLayoutParams(layoutParams);
                }
            }
        });
    }
    if (STICKY_LAYOUT) {
        StickyLayoutHelper layoutHelper = new StickyLayoutHelper();
        layoutHelper.setOffset(100);
        layoutHelper.setAspectRatio(4);
        adapters.add(new SubAdapter(this, layoutHelper, 1, new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 100)));
    }
    if (SINGLE_LAYOUT) {
        SingleLayoutHelper layoutHelper = new SingleLayoutHelper();
        layoutHelper.setBgColor(Color.rgb(135, 225, 90));
        layoutHelper.setAspectRatio(4);
        layoutHelper.setMargin(10, 20, 10, 20);
        layoutHelper.setPadding(10, 10, 10, 10);
        adapters.add(new SubAdapter(this, layoutHelper, 1, new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 100)));
    }
    if (COLUMN_LAYOUT) {
        ColumnLayoutHelper layoutHelper = new ColumnLayoutHelper();
        layoutHelper.setBgColor(0xff00f0f0);
        layoutHelper.setWeights(new float[] { 40.0f, Float.NaN, 40 });
        adapters.add(new SubAdapter(this, layoutHelper, 5) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                if (position == 0) {
                    LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 300);
                    layoutParams.mAspectRatio = 4;
                    holder.itemView.setLayoutParams(layoutParams);
                }
            }
        });
    }
    if (ONEN_LAYOUT) {
        OnePlusNLayoutHelper helper = new OnePlusNLayoutHelper();
        helper.setBgColor(0xff876384);
        helper.setAspectRatio(4.0f);
        helper.setColWeights(new float[] { 40f, 45f });
        helper.setMargin(10, 20, 10, 20);
        helper.setPadding(10, 10, 10, 10);
        adapters.add(new SubAdapter(this, helper, 2));
    }
    if (ONEN_LAYOUT) {
        OnePlusNLayoutHelper helper = new OnePlusNLayoutHelper();
        helper.setBgColor(0xffef8ba3);
        helper.setAspectRatio(2.0f);
        helper.setColWeights(new float[] { 40f });
        helper.setRowWeight(30f);
        helper.setMargin(10, 20, 10, 20);
        helper.setPadding(10, 10, 10, 10);
        adapters.add(new SubAdapter(this, helper, 4) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
                LayoutParams lp = (LayoutParams) holder.itemView.getLayoutParams();
                if (position == 0) {
                    lp.rightMargin = 1;
                } else if (position == 1) {
                } else if (position == 2) {
                    lp.topMargin = 1;
                    lp.rightMargin = 1;
                }
            }
        });
    }
    if (ONEN_LAYOUT) {
        adapters.add(new SubAdapter(this, new OnePlusNLayoutHelper(), 0));
        OnePlusNLayoutHelper helper = new OnePlusNLayoutHelper();
        helper.setBgColor(0xff87e543);
        helper.setAspectRatio(1.8f);
        helper.setColWeights(new float[] { 33.33f, 50f, 40f });
        helper.setMargin(10, 20, 10, 20);
        helper.setPadding(10, 10, 10, 10);
        LayoutParams lp = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        adapters.add(new SubAdapter(this, helper, 3, lp) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
                LayoutParams lp = (LayoutParams) holder.itemView.getLayoutParams();
                if (position == 0) {
                    lp.rightMargin = 1;
                }
            }
        });
    }
    if (COLUMN_LAYOUT) {
        adapters.add(new SubAdapter(this, new ColumnLayoutHelper(), 0));
        adapters.add(new SubAdapter(this, new ColumnLayoutHelper(), 4));
    }
    if (FIX_LAYOUT) {
        FixLayoutHelper layoutHelper = new FixLayoutHelper(10, 10);
        adapters.add(new SubAdapter(this, layoutHelper, 0));
        layoutHelper = new FixLayoutHelper(FixLayoutHelper.TOP_RIGHT, 20, 20);
        adapters.add(new SubAdapter(this, layoutHelper, 1) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
                LayoutParams layoutParams = new LayoutParams(200, 200);
                holder.itemView.setLayoutParams(layoutParams);
            }
        });
    }
    if (STICKY_LAYOUT) {
        StickyLayoutHelper layoutHelper = new StickyLayoutHelper(false);
        adapters.add(new SubAdapter(this, layoutHelper, 0));
        layoutHelper = new StickyLayoutHelper(false);
        layoutHelper.setOffset(100);
        adapters.add(new SubAdapter(this, layoutHelper, 1, new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 100)));
    }
    if (GRID_LAYOUT) {
        GridLayoutHelper layoutHelper = new GridLayoutHelper(2);
        layoutHelper.setMargin(7, 0, 7, 0);
        layoutHelper.setWeights(new float[] { 46.665f });
        layoutHelper.setHGap(3);
        adapters.add(new SubAdapter(this, layoutHelper, 2));
        layoutHelper = new GridLayoutHelper(4);
        layoutHelper.setWeights(new float[] { 20f, 26.665f });
        layoutHelper.setMargin(7, 0, 7, 0);
        layoutHelper.setHGap(3);
        adapters.add(new SubAdapter(this, layoutHelper, 8));
    }
    if (GRID_LAYOUT) {
        adapters.add(new SubAdapter(this, new GridLayoutHelper(4), 0));
        GridLayoutHelper helper = new GridLayoutHelper(4);
        helper.setAspectRatio(4f);
        //helper.setColWeights(new float[]{40, 20, 30, 30});
        // helper.setMargin(0, 10, 0, 10);
        helper.setGap(10);
        adapters.add(new SubAdapter(this, helper, 80) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
                LayoutParams lp = (LayoutParams) holder.itemView.getLayoutParams();
            // lp.bottomMargin = 1;
            // lp.rightMargin = 1;
            }
        });
    }
    if (FIX_LAYOUT) {
        adapters.add(new SubAdapter(this, new ScrollFixLayoutHelper(20, 20), 1) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
                LayoutParams layoutParams = new LayoutParams(200, 200);
                holder.itemView.setLayoutParams(layoutParams);
            }
        });
    }
    if (LINEAR_LAYOUT)
        adapters.add(new SubAdapter(this, new LinearLayoutHelper(), 10));
    if (GRID_LAYOUT) {
        GridLayoutHelper helper = new GridLayoutHelper(3);
        helper.setMargin(0, 10, 0, 10);
        adapters.add(new SubAdapter(this, helper, 3));
    }
    if (STAGGER_LAYOUT) {
        // adapters.add(new SubAdapter(this, new StaggeredGridLayoutHelper(2, 0), 0));
        final StaggeredGridLayoutHelper helper = new StaggeredGridLayoutHelper(2, 10);
        helper.setMargin(20, 10, 10, 10);
        helper.setPadding(10, 10, 20, 10);
        helper.setBgColor(0xFF86345A);
        adapters.add(new SubAdapter(this, helper, 27) {

            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
                LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 200);
                if (position % 2 == 0) {
                    layoutParams.mAspectRatio = 1.0f;
                } else {
                    layoutParams.height = 340 + position % 7 * 20;
                }
                holder.itemView.setLayoutParams(layoutParams);
            }
        });
    }
    if (COLUMN_LAYOUT) {
    // adapters.add(new SubAdapter(this, new ColumnLayoutHelper(), 3));
    }
    if (GRID_LAYOUT) {
    // adapters.add(new SubAdapter(this, new GridLayoutHelper(4), 24));
    }
    delegateAdapter.setAdapters(adapters);
    final Handler mainHandler = new Handler(Looper.getMainLooper());
    trigger = new Runnable() {

        @Override
        public void run() {
            // recyclerView.scrollToPosition(22);
            // recyclerView.getAdapter().notifyDataSetChanged();
            recyclerView.requestLayout();
        // mainHandler.postDelayed(trigger, 1000);
        }
    };
    mainHandler.postDelayed(trigger, 1000);
}

Example 24 with LayoutParams

use of android.support.v7.widget.RecyclerView.LayoutParams in project vlayout by alibaba.

the class AbstractFullFillLayoutHelper method getAllChildren.

protected int getAllChildren(View[] toFill, RecyclerView.Recycler recycler, LayoutStateWrapper layoutState, LayoutChunkResult result, LayoutManagerHelper helper) {
    final boolean layingOutInPrimaryDirection = layoutState.getItemDirection() == LayoutStateWrapper.ITEM_DIRECTION_TAIL;
    int count = 0;
    int firstPos = layingOutInPrimaryDirection ? getRange().getLower() : getRange().getUpper();
    final int curPos = layoutState.getCurrentPosition();
    if (layingOutInPrimaryDirection ? (curPos > firstPos) : (curPos > firstPos)) {
        // do ugly bug fix now
        Log.w(TAG, "Please handle strange order views carefully");
    }
    while (count < toFill.length) {
        if (isOutOfRange(layoutState.getCurrentPosition()))
            break;
        View view = nextView(recycler, layoutState, helper, result);
        if (view == null) {
            break;
        }
        toFill[count] = view;
        // normalize layout params
        LayoutParams layoutParams = view.getLayoutParams();
        if (layoutParams == null) {
            view.setLayoutParams(generateDefaultLayoutParams());
        } else if (!checkLayoutParams(layoutParams)) {
            view.setLayoutParams(generateLayoutParams(layoutParams));
        }
        count++;
    }
    if (count > 0 && !layingOutInPrimaryDirection) {
        // reverse array
        int s = 0, e = count - 1;
        while (s < e) {
            View temp = toFill[s];
            toFill[s] = toFill[e];
            toFill[e] = temp;
            s++;
            e--;
        }
    }
    return count;
}

Example 25 with LayoutParams

use of android.support.v7.widget.RecyclerView.LayoutParams in project vlayout by alibaba.

the class StaggeredGridLayoutHelper method recycleFromEnd.

private void recycleFromEnd(RecyclerView.Recycler recycler, int line, LayoutManagerHelper helper) {
    final OrientationHelper orientationHelper = helper.getMainOrientationHelper();
    final int childCount = helper.getChildCount();
    int i;
    for (i = childCount - 1; i >= 0; i--) {
        View child = helper.getChildAt(i);
        if (child != null && orientationHelper.getDecoratedStart(child) > line) {
            LayoutParams lp = (LayoutParams) child.getLayoutParams();
            int position = lp.getViewPosition();
            Span span = findSpan(position, child, false);
            if (span != null) {
                span.popEnd(orientationHelper);
                helper.removeChildView(child);
                recycler.recycleView(child);
            }
        } else {
            // done
            return;
        }
    }
}