如何滑动删除卡(使用appcompat v7的CardView)

Question

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
                                    android:orientation="horizontal"
                                    android:layout_width="match_parent"
                                    android:stateListAnimator="@anim/anim"
                                    android:layout_margin="5dp"
                                    android:clickable="true"
                                    android:layout_height="wrap_content">
    <TextView
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:id="@+id/textview"
              android:minHeight="?android:listPreferredItemHeight"
              android:gravity="center_vertical">

    </TextView>
</android.support.v7.widget.CardView>

我正在使用CardView显示一行文本.如何滑动以删除那些行 - 哪些是cardviews？另外,如何为每一行设置onItemClickListener？我再次使用cardview来显示每一行.

Answer 1

我想做类似的事情,所以我调整了romannurik的Android-SwipeToDismiss来完成我们想要的.

代码在github上,带有一个工作示例应用程序,包括:

• 其子类RecyclerView.OnItemTouchListener侦听触摸事件并检测何时刷制项目,并相应地设置动画.
• SwipeListener调用一个是为了知道一个项目是否可以被解雇,并在项目被解雇时再次调用.

要使用它,请按照github上的说明操作,或者只是将类复制SwipeableRecyclerViewTouchListener到项目中并像这样使用它:

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

    mItems = new ArrayList<>(30);
    for (int i = 0; i < 30; i++) {
        mItems.add(String.format("Card number %2d", i));
    }

    mAdapter = new CardViewAdapter(mItems);

    mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);

    mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
    mRecyclerView.setAdapter(mAdapter);

    SwipeableRecyclerViewTouchListener swipeTouchListener =
            new SwipeableRecyclerViewTouchListener(mRecyclerView,
                    new SwipeableRecyclerViewTouchListener.SwipeListener() {
                        @Override
                        public boolean canSwipe(int position) {
                            return true;
                        }

                        @Override
                        public void onDismissedBySwipeLeft(RecyclerView recyclerView, int[] reverseSortedPositions) {
                            for (int position : reverseSortedPositions) {
                                mItems.remove(position);
                                mAdapter.notifyItemRemoved(position);
                            }
                            mAdapter.notifyDataSetChanged();
                        }

                        @Override
                        public void onDismissedBySwipeRight(RecyclerView recyclerView, int[] reverseSortedPositions) {
                            for (int position : reverseSortedPositions) {
                                mItems.remove(position);
                                mAdapter.notifyItemRemoved(position);
                            }
                            mAdapter.notifyDataSetChanged();
                        }
                    });

    mRecyclerView.addOnItemTouchListener(swipeTouchListener);
}