android5.0自带兼容控件__RecyclerView

RecyclerView

http://blog.csdn.net/Rozol/article/details/50225593

http://weibo.com/u/2524456400

compile 'com.android.support:recyclerview-v7:24.2.1'

基本使用

<android.support.v7.widget.RecyclerView
android:id="@+id/recycle"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</android.support.v7.widget.RecyclerView>

public class RecyclerViewDemo extends Activity {
private RecyclerView recycle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recycleview);
initView();
initData();
}

private void initView() {
recycle = (RecyclerView) findViewById(R.id.recycle);
}

private void initData() {
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setOrientation(RecyclerView.VERTICAL);
recycle.setLayoutManager(layoutManager);
recycle.setAdapter(new RecycleAdapter(this, Utils.getData()));
}
}

public class RecycleAdapter extends RecyclerView.Adapter<ViewHolder>{
private String[] contents;
private Context context;
private OnItemClickListener onItemClickListener;

public RecycleAdapter(Context context, String[] contents) {
this.context = context;
this.contents = contents;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.item_recycle_menu, parent, false);
return new RecyclerHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
((RecyclerHolder) holder).setData(position);
}

@Override
public int getItemCount() {
return return contents == null ? 0 : contents.length;
}

class RecyclerHolder extends RecyclerView.ViewHolder{
private TextView content;

public RecyclerHolder(View itemView) {
super(itemView);
content = (TextView) itemView.findViewById(R.id.content);
}

public void setData(int position) {
content.setText(contents[position]);
}
}
}

R.layout.item_recycle_menu

layout_width

layout_height

fill_parent

wrap_content

layout_height

fill_parent

layout_height

wrap_content

源码研究

Code方法研究:

public class RecyclerView extends ViewGroup implements ScrollingView, NestedScrollingChild {
public static final int HORIZONTAL = 0;
public static final int VERTICAL = 1;
public static final int NO_POSITION = -1;
public static final long NO_ID = -1;
public static final int INVALID_TYPE = -1;
public static final int TOUCH_SLOP_DEFAULT = 0;
public static final int TOUCH_SLOP_PAGING = 1;
public static final int SCROLL_STATE_IDLE = 0;
public static final int SCROLL_STATE_DRAGGING = 1;
public static final int SCROLL_STATE_SETTLING = 2;

public RecyclerViewAccessibilityDelegate getCompatAccessibilityDelegate() { }
public void setAccessibilityDelegateCompat(RecyclerViewAccessibilityDelegate accessibilityDelegate) { } //XXX未知XXX
public void setHasFixedSize(boolean hasFixedSize) { } //true:不允许Adapter改变RecyclerView的大小 {重要}
public boolean hasFixedSize() { }
public void setScrollingTouchSlop(int slopConstant) { } //设置touch越界 [TOUCH_SLOP_DEFAULT/TOUCH_SLOP_PAGING]
public void swapAdapter(Adapter adapter, boolean removeAndRecycleExistingViews) { } // 更换Adapter
public void setAdapter(Adapter adapter) { } // 更换Adapter
public Adapter getAdapter() { }
public void setRecyclerListener(RecyclerListener listener) { } // 设置回收监听
public void addOnChildAttachStateChangeListener(OnChildAttachStateChangeListener listener) { } // 监听孩子的关联和脱离
public void removeOnChildAttachStateChangeListener(OnChildAttachStateChangeListener listener) { }
public void clearOnChildAttachStateChangeListeners() { }
public void setLayoutManager(LayoutManager layout) { } // 设置布局管理者{重要}
public LayoutManager getLayoutManager() { }
public RecycledViewPool getRecycledViewPool() { }
public void setRecycledViewPool(RecycledViewPool pool) { } // 设置回收池
public void setViewCacheExtension(ViewCacheExtension extension) { } // 扩张缓存/null清除现有缓存
public void setItemViewCacheSize(int size) { } // 设置条目缓存大小,这些条目不做任何修改直接使用
public int getScrollState() { } //获取滚动状态 [SCROLL_STATE_IDLE/SCROLL_STATE_DRAGGING/SCROLL_STATE_SETTLING] {重要}
public void addItemDecoration(ItemDecoration decor, int index) { } // 添加条目的装饰
public void addItemDecoration(ItemDecoration decor) { }
public void removeItemDecoration(ItemDecoration decor) { }
public void setChildDrawingOrderCallback(ChildDrawingOrderCallback childDrawingOrderCallback) { } //设置孩子绘画回调
public void addOnScrollListener(OnScrollListener listener) { } // 添加滚动监听 {重要}
public void removeOnScrollListener(OnScrollListener listener) { } // {重要}
public void clearOnScrollListeners() { }
public void scrollToPosition(int position) { } // 滚动到某个位置 {重要}
public void smoothScrollToPosition(int position) { } // 平滑的滚动到某个位置 {重要}
public void setLayoutFrozen(boolean frozen) { } // true:冻结布局和滚动; false:释放冻结 (冻结后仍可调用scrollToPosition/smoothScrollToPosition) {重要}
public boolean isLayoutFrozen() { }
public void smoothScrollBy(int dx, int dy) { }
public boolean fling(int velocityX, int velocityY) { } // true:在抛(速度快) {重要}
public void stopScroll() { } // 停止滚动
public int getMinFlingVelocity() { } // 最小的抛速度
public int getMaxFlingVelocity() { }
public void addOnItemTouchListener(OnItemTouchListener listener) { } // 添加条目touch监听
public void removeOnItemTouchListener(OnItemTouchListener listener) { }
public boolean isComputingLayout() { } // true:是现在在处理的布局
public ItemAnimator getItemAnimator() { } // 条目动画/null:没有动画
public boolean isAnimating() { }
public void invalidateItemDecorations() { } // 刷新条目装饰
public ViewHolder getChildViewHolder(View child) { } // 获取孩子的ViewHolder
public int getChildAdapterPosition(View child) { } //孩子在适配器中的位置
public int getChildLayoutPosition(View child) { }
public long getChildItemId(View child) { } // 获取条目id
public ViewHolder findViewHolderForLayoutPosition(int position) { }
public ViewHolder findViewHolderForAdapterPosition(int position) { }
public ViewHolder findViewHolderForItemId(long id) { }
public View findChildViewUnder(float x, float y) { } //给定的点下找到的最上面的子view
public void offsetChildrenVertical(int dy) { } // 垂直滚动
public void onChildAttachedToWindow(View child) { }
public void onChildDetachedFromWindow(View child) { }
public void offsetChildrenHorizontal(int dx) { } // 水平滚动
public boolean hasPendingAdapterUpdates() { } // 是否有未更新的布局

public static class RecycledViewPool { } // 回收池
public static abstract class Adapter<VH extends ViewHolder> { } // 适配器 {重要}
public static abstract class LayoutManager { } // 布局管理 {重要}
public static abstract class ItemDecoration {}
public static class SimpleOnItemTouchListener implements RecyclerView.OnItemTouchListener { }
public static abstract class ViewHolder { } // ViewHolder {重要}
public static class LayoutParams extends android.view.ViewGroup.MarginLayoutParams { } //LayoutParams
public static abstract class AdapterDataObserver { } // 观察者
public static abstract class SmoothScroller { } // 滚动类 {重要}
static class AdapterDataObservable extends Observable<AdapterDataObserver> { } // 观察者
public static class State {}
public static abstract class ItemAnimator { } // 条目动画类 {重要}
}

public RecyclerHolder(View itemView) {
super(itemView);
content = (TextView) itemView.findViewById(R.id.item_content);
cardview = (CardView) itemView.findViewById(R.id.item_cardview);
cardview.setOnClickListener(this);
}

public void setData(int position) {
content.setText(contents[position]);
}

@Override
public void onClick(View v) {
if(onItemClickListener != null) onItemClickListener.onItemClick(getLayoutPosition());
}

案例:

纵向List

横向List

纵向Grid

横向List

纵向瀑布流

横向瀑布流

总的感觉就是比以前的listview这些控件不知道好用多少倍,只需要这篇文章上面的那几句”基本代码”,基本上就没怎么改就实现了这么多功能,超级棒!!!

案例源代码:

GitHub