Android实现网易Tab分类排序控件实现

<com.net168.lib.SortTabLayout  android:id="@+id/layout"  android:layout_width="match_parent"  android:layout_height="wrap_content"  />

//构造数据源，暂时仅支持StringList<String> data = new ArrayList<String>();for (int i = 0; i < 20; i ++) {  data.add("item" + i);}//设置数据源vSortLayout.setShowData(data, 1);

vSortLayout.setOnSelectListener(new onSelectListener() {  //点击事件，点击Tab布局里面的item触发  @Override  public void onSelect(View v, int index) {    Toast.makeText(MainActivity.this, "你点击了item ，内容为：" + ((TextView)v).getText(), Toast.LENGTH_SHORT).show();  }  //长按事件，长按Tab布局里面的item触发  @Override  public void onLongSelect(View v) {    Toast.makeText(MainActivity.this, "长按Tab，开始排列", Toast.LENGTH_SHORT).show();  }});

//如果参数是true的话，开始排序，也就是可以拖动vSortLayout.setIsMoveList(true);//结束排序，并且会返回选择tab的当前新位置vSortLayout.getAndFinishSortData();

/** * 配置参数区域 * mMaxRow ： 每行的个数 * Magin Width Tab的间隔和本身的宽度的占比 * 例如mMaxRow = 4，则宽度会由此策略分配 * |Magin|View|Magin|View|Magin|View|Magin|View|Magin| * 记控件宽度为这么分配 ： 总宽度 = 5 * Magin + 4 * View， 而 Magin ： View = mRowMagin ： mRowWidth * 可以推导出各个控件的宽度，高度也如此计算 */private final int mMaxRow = 4;private final int mRowMagin = 5;private final int mRowWidth = 26;private final int mColumnMagin = 4;private final int mColumnHeight = 10;

@Overrideprotected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) {     final int childCount = getChildCount();     int row = 0;  int column = 0;  int startWidth = 0;  int startHeight = 0;     for (int i = 0; i < childCount; i++) {    View childeView = childList.get(i);    row = i / 4;    column = i % 4;    startWidth = (int) ((column * (mRowWidth + 2 * mRowMagin) + mRowMagin) * mChildeItemSize);    startHeight = (int) ((row * (mColumnHeight + 2 * mColumnMagin) + mColumnMagin) * mChildeItemSize);    childeView.layout(startWidth ,startHeight ,(int)(startWidth + mRowWidth * mChildeItemSize),         (int)(startHeight + mColumnHeight * mChildeItemSize));  }   }

private void moveChildView(float x, float y) {  if (mMoveChildView != null) {    int left = (int) (((mChildIndex % 4) * (mRowWidth + 2 * mRowMagin) + mRowMagin) * mChildeItemSize);    int top = (int) (((mChildIndex / 4) * (mColumnHeight + 2 * mColumnMagin) + mColumnMagin) * mChildeItemSize);    int width = (int) (left + mRowWidth * mChildeItemSize);    int heigth = (int) (top + mColumnHeight * mChildeItemSize);    int moveX = (int) (x - beginX);    int moveY = (int) (y - beginY);    mMoveChildView.layout(left + moveX, top + moveY, width + moveX, heigth + moveY);    mMoveChildView.invalidate();  }}