Android ListView向左和向左滑动以接受和拒绝

Question

我想开发一个列表视图,当从左向右滑动时 - 在左角显示一个accept(true)图标(不可点击 - 从左向右滑动时只显示颜色变化),如下面的屏幕截图:

当我从左向右滑动时,它将接受(调用'accept'API),当我从右向左滑动时,它将显示如下内容:

这是在iOS中完成的,但我无法在Android中找到如何执行此操作,我尝试使用Google搜索,但无法找到我想要的内容.

我尝试了以下示例:http://www.tutecentral.com/android-swipe-listview/

但是在那个例子中,当我从左向右和从右向左滑动时,会调用相同的onOpened(..)方法,因此知道何时调用accept以及何时调用reject API会让人感到困惑,因为在任何类型上调用相同的方法刷卡.

并且我还希望接受(在左侧)和拒绝(在右侧)图像仅在我向左或向右滑动时显示,但是当我拿起手指时它们必须消失并且应该显示整个ListView (绝不要同时显示两个侧面图像).

所以任何人请帮助我了解如何做到这一点.

我的问题有些令人困惑,但我不知道如何解释整个动画,所以我试着像上面那样解释.

如果有人能帮助我,我将非常感激.

Answer 1

解决方案1:

你需要做的就像跟随你的功能"接近",

包装ListView的适配器

如下:

  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Create an Adapter for your content
    String[] content = new String[20];
    for (int i=0;i<20;i++) content[i] = "Row "+(i+1);
    ArrayAdapter<String> stringAdapter = new ArrayAdapter<String>(
        this,
        R.layout.row_bg,
        R.id.text,
        new ArrayList<String>(Arrays.asList(content))
    );

   // Wrap your content in a SwipeActionAdapter
   mAdapter = new SwipeActionAdapter(stringAdapter);

   // Pass a reference of your ListView to the SwipeActionAdapter
   mAdapter.setListView(getListView());

   // Set the SwipeActionAdapter as the Adapter for your ListView
   setListAdapter(mAdapter);
  }

为每个滑动方向创建背景布局

喜欢以下:

  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

   // Create an Adapter for your content
   String[] content = new String[20];
   for (int i=0;i<20;i++) content[i] = "Row "+(i+1);
   ArrayAdapter<String> stringAdapter = new ArrayAdapter<String>(
        this,
        R.layout.row_bg,
        R.id.text,
        new ArrayList<String>(Arrays.asList(content))
   );

   // Wrap your content in a SwipeActionAdapter
   mAdapter = new SwipeActionAdapter(stringAdapter);

   // Pass a reference of your ListView to the SwipeActionAdapter
   mAdapter.setListView(getListView());

   // Set the SwipeActionAdapter as the Adapter for your ListView
   setListAdapter(mAdapter);

   // Set backgrounds for the swipe directions
    mAdapter.addBackground(SwipeDirections.DIRECTION_FAR_LEFT,R.layout.row_bg_left_far)
          .addBackground(SwipeDirections.DIRECTION_NORMAL_LEFT,R.layout.row_bg_left)
         .addBackground(SwipeDirections.DIRECTION_FAR_RIGHT,R.layout.row_bg_right_far)
        .addBackground(SwipeDirections.DIRECTION_NORMAL_RIGHT,R.layout.row_bg_right);
}

你从这里得到了两个库和例子:https: //github.com/wdullaer/SwipeActionAdapter

这不符合您的要求,但我希望这将帮助您实现您的功能.

解决方案2:

解决方案2是关于更改二手代码中的一些代码:http://www.tutecentral.com/android-swipe-listview/

我从链接http://www.tutecentral.com/android-swipe-listview/尝试了你的代码 并更改了一些代码并成功解决了关于onOpened(..)方法的问题(你的困惑)(从左到右和反之亦然 )

第一次改变:

1. custom_row.xml布局文件有三个按钮swipe_button1到3,删除其中间.

2. 复制粘贴代码以保留两个按钮:

   <Button
       android:id="@+id/swipe_button1"
       android:layout_width="48dp"
       android:layout_height="48dp"
       android:layout_alignParentLeft="true"
       android:layout_alignParentTop="true"
       android:background="@drawable/your_accept_image" />
   
   <Button
       android:id="@+id/swipe_button3"
       style="@style/MyListButtonAction"
       android:layout_width="48dp"
       android:layout_height="48dp"
       android:layout_alignParentRight="true"
       android:layout_alignParentTop="true"
       android:background="@drawable/your_reject_image" />
   

此布局保持代码相同.

第二个变化:

所以现在你的接受和拒绝以及列表代码已准备就绪,现在讨论onOpened(..)方法.

混淆解决方案1 - 你说过,你的onOpend(...)方法从左到右,反之亦然

- >只是改变以下内容:

public void onOpened(int position, boolean toRight) {

            if(toRight)
            {

                //  for left to right your api calling here
                swipelistview.closeAnimate(position);
            }
            else
            {
                // for right to left your api calling here
                swipelistview.closeAnimate(position);
            }


        }

混淆解决方案2当我拿起手指时,它必须显示整个列表视图或列表视图边应该保留它的角落以使其不起作用

- >我已经在上面回答了

名为swipelistview.closeAnimate(position); 如果在其他情况下,当您向左和向右滑动时,它会隐藏左侧接受和右侧拒绝图像.

所以最终的代码如下:

整个cutom_row.xml布局

 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent" >

  <RelativeLayout
    android:id="@+id/back"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:tag="back" >

    <Button
        android:id="@+id/swipe_button1"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:background="@drawable/accept_image" />

    <Button
        android:id="@+id/swipe_button3"
        style="@style/MyListButtonAction"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:background="@drawable/reject_image" />
</RelativeLayout>


<RelativeLayout
    android:id="@+id/front"
    style="@style/MyListFrontContent"
    android:orientation="vertical"
    android:tag="front" >

    <ImageView
        android:id="@+id/example_image"
        style="@style/MyListImage" />

    <TextView
        android:id="@+id/example_itemname"
        style="@style/MyListTitle"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/example_image" />
  </RelativeLayout>

</FrameLayout>

整个MainActivity.java

public class MainActivity extends Activity {

SwipeListView swipelistview;
ItemAdapter adapter;
List<ItemRow> itemData;

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

    swipelistview=(SwipeListView)findViewById(R.id.example_swipe_lv_list); 
    itemData=new ArrayList<ItemRow>();
    adapter=new ItemAdapter(this,R.layout.custom_row,itemData);

    swipelistview.setSwipeListViewListener(new BaseSwipeListViewListener() {
        @Override
        public void onOpened(int position, boolean toRight) {

            if(toRight)
            {

                //  for left to right your api calling here
                swipelistview.closeAnimate(position);
            }
            else
            {
                // for right to left your api calling here
                swipelistview.closeAnimate(position);
            }


        }

        @Override
        public void onClosed(int position, boolean fromRight) {
            // close list slide
        }

        @Override
        public void onListChanged() {

        }

        @Override
        public void onMove(int position, float x) {


        }

        @Override
        public void onStartOpen(int position, int action, boolean right) {
            Log.d("swipe", String.format("onStartOpen %d - action %d", position, action));



        }

        @Override
        public void onStartClose(int position, boolean right) {
            Log.d("swipe", String.format("onStartClose %d", position));


        }

        @Override
        public void onClickFrontView(int position) {
            Log.d("swipe", String.format("onClickFrontView %d", position));




        }

        @Override
        public void onClickBackView(int position) {
            Log.d("swipe", String.format("onClickBackView %d", position));

            swipelistview.closeAnimate(position);//when you touch back view it will close

        }

        @Override
        public void onDismiss(int[] reverseSortedPositions) {

        }

    });

    //These are the swipe listview settings. you can change these
    //setting as your requirement 
    swipelistview.setSwipeMode(SwipeListView.SWIPE_MODE_BOTH); // there are five swiping modes
    //    swipelistview.setSwipeActionLeft(SwipeListView.SWIPE_ACTION_DISMISS); //there are four swipe actions 
    swipelistview.setSwipeActionRight(SwipeListView.SWIPE_ACTION_REVEAL);
    swipelistview.setOffsetLeft(convertDpToPixel(0f)); // left side offset
    swipelistview.setOffsetRight(convertDpToPixel(80f)); // right side offset
    swipelistview.setAnimationTime(500); // Animation time
    swipelistview.setSwipeOpenOnLongPress(true); // enable or disable SwipeOpenOnLongPress

    swipelistview.setAdapter(adapter);


    for(int i=0;i<10;i++)
    {
        itemData.add(new ItemRow("Swipe Item"+ i,getResources().getDrawable(R.drawable.ic_launcher) ));

    }

    adapter.notifyDataSetChanged();
}

public int convertDpToPixel(float dp) {
    DisplayMetrics metrics = getResources().getDisplayMetrics();
    float px = dp * (metrics.densityDpi / 160f);
    return (int) px;
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

 }

其他代码和库保持不变,它对您和其他人也很有帮助,所以尽情享受.

Answer 2

它对我有用......我希望它对你有用..!

将OnTouchListener设置为listview为

listview.setOnTouchListener(new OnSwipeTouchListener(getActivity(),
            listview));

OnSwipeTouchListener类如下:

public class OnSwipeTouchListener implements OnTouchListener {

    ListView list;
    private GestureDetector gestureDetector;
    private Context context;

    public OnSwipeTouchListener(Context ctx, ListView list) {
        gestureDetector = new GestureDetector(ctx, new GestureListener());
        context = ctx;
        this.list = list;
    }

    public OnSwipeTouchListener() {
        super();
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        return gestureDetector.onTouchEvent(event);
    }

    public void onSwipeRight(int pos) {
        //Do what you want after swiping left to right

    }

    public void onSwipeLeft(int pos) {

        //Do what you want after swiping right to left
    }

    private final class GestureListener extends SimpleOnGestureListener {

        private static final int SWIPE_THRESHOLD = 100;
        private static final int SWIPE_VELOCITY_THRESHOLD = 100;

        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

        private int getPostion(MotionEvent e1) {
            return list.pointToPosition((int) e1.getX(), (int) e1.getY());
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2,
                float velocityX, float velocityY) {
            float distanceX = e2.getX() - e1.getX();
            float distanceY = e2.getY() - e1.getY();
            if (Math.abs(distanceX) > Math.abs(distanceY)
                    && Math.abs(distanceX) > SWIPE_THRESHOLD
                    && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                if (distanceX > 0)
                    onSwipeRight(getPostion(e1));
                else
                    onSwipeLeft(getPostion(e1));
                return true;
            }
            return false;
        }

    }
}