Android 左右滑动消除卡片效果的自定义控件

效果图 .gif

这个效果 应该是模仿 国外 Tinder 的可以左右滑动，不过 咱们中国的探探app 貌似也是这个样子，之前下载过 记得当时 玩了完效果，反正是国外的人写的 ，看看我们应用的基础步骤：

• moudle build.gradle 文件需要compile

compile 'com.daprlabs.aaron:swipedeck:2.0.6'

• activity_main布局文件里引用

xmlns:swipedeck="http://schemas.android.com/apk/res-auto"
 <com.daprlabs.aaron.swipedeck.SwipeDeck
        android:id="@+id/swipe_deck"
        android:layout_width="match_parent"
        android:layout_height="650dp"
        android:layout_gravity="center"
        android:paddingLeft="50dp"
        android:paddingRight="50dp"
        android:paddingTop="96dp"
        swipedeck:max_visible="3"
        swipedeck:render_above="false"
        swipedeck:card_spacing="15dp"
        swipedeck:preview_layout="@layout/test_card2"/>

• MainActivity
  cardStack.setCallback(new SwipeDeck.SwipeDeckCallback(){})实现接口方法

 void cardSwipedLeft(long itemId);//向左
 void cardSwipedRight(long itemId);//向右
 boolean isDragEnabled(long itemId);//是否可以拖动视图
 cardStack.unSwipeCard();// 封装好的添加数据，根据自己的需求用：

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";
    private SwipeDeck cardStack;
    private Context context = this;
    private SwipeDeckAdapter adapter;
    private ArrayList<String> testData;
    private CheckBox dragCheckbox;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        cardStack = (SwipeDeck) findViewById(R.id.swipe_deck);
        dragCheckbox = (CheckBox) findViewById(R.id.checkbox_drag);

        testData = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            testData.add(String.valueOf(i));
        }

        adapter = new SwipeDeckAdapter(testData, this);
        if(cardStack != null){
            cardStack.setAdapter(adapter);
        }
        cardStack.setCallback(new SwipeDeck.SwipeDeckCallback() {
            @Override
            public void cardSwipedLeft(long stableId) {
                Log.i("MainActivity", "card was swiped left, position in adapter: " + stableId);
            }

            @Override
            public void cardSwipedRight(long stableId) {
                Log.i("MainActivity", "card was swiped right, position in adapter: " + stableId);

            }

            @Override
            public boolean isDragEnabled(long itemId) {
                return dragCheckbox.isChecked();
            }
        });

        cardStack.setLeftImage(R.id.left_image);
        cardStack.setRightImage(R.id.right_image);

        Button btn = (Button) findViewById(R.id.button_left);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                cardStack.swipeTopCardLeft(500);

            }
        });
        Button btn2 = (Button) findViewById(R.id.button_right);
        btn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                cardStack.swipeTopCardRight(180);
            }
        });

        Button btn3 = (Button) findViewById(R.id.button_center);
        btn3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
//                testData.add("a sample string.");
//                adapter.notifyDataSetChanged();
                cardStack.unSwipeCard();
            }
        });

    }
}

• adapter 正常的使用 布局文件 也很随便的写 没什么特别的要求

  public class SwipeDeckAdapter extends BaseAdapter {

        private List<String> data;
        private Context context;

        public SwipeDeckAdapter(List<String> data, Context context) {
            this.data = data;
            this.context = context;
        }

        @Override
        public int getCount() {
            return data.size();
        }

        @Override
        public Object getItem(int position) {
            return data.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {

            View v = convertView;
            if (v == null) {
                LayoutInflater inflater = getLayoutInflater();
                // normally use a viewholder
                v = inflater.inflate(R.layout.test_card2, parent, false);
            }
            //((TextView) v.findViewById(R.id.textView2)).setText(data.get(position));
            ImageView imageView = (ImageView) v.findViewById(R.id.offer_image);
            Picasso.with(context).load(R.drawable.food).fit().centerCrop().into(imageView);
            TextView textView = (TextView) v.findViewById(R.id.sample_text);
            String item = (String)getItem(position);
            textView.setText(item);

            v.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Log.i("Layer type: ", Integer.toString(v.getLayerType()));
                    Log.i("Hardware Accel type:", Integer.toString(View.LAYER_TYPE_HARDWARE));

                }
            });
            return v;
        }
    }

Android 开源组件和第三方库汇总

传送门(https://github.com/aaronbond/SwipeDeck2)