列表视图项向左滑动并向右滑动？ [关闭]

2 回答

• 0

  试试这个：

  navigaList.setOnTouchListener(swipeDetector);
  navigaList.setOnItemClickListener(listener);
  
  OnItemClickListener listener = new OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> arg0, View arg1, int position,
                              long arg3) {
          if(swipeDetector.swipeDetected()) {
              if(swipeDetector.getAction() == Action.RL) {
  
              } else {
  
              }
          }        
      };
  

  SwipeDetector.java

  public class SwipeDetector implements View.OnTouchListener {
  
      public static enum Action {
          LR, // Left to Right
          RL, // Right to Left
          TB, // Top to bottom
          BT, // Bottom to Top
          None // when no action was detected
      }
  
      private static final String logTag = "SwipeDetector";
      private static final int MIN_DISTANCE = 100;
      private float downX, downY, upX, upY;
      private Action mSwipeDetected = Action.None;
  
      public boolean swipeDetected() {
          return mSwipeDetected != Action.None;
      }
  
      public Action getAction() {
          return mSwipeDetected;
      }
  
      public boolean onTouch(View v, MotionEvent event) {
          switch (event.getAction()) {
          case MotionEvent.ACTION_DOWN: {
              downX = event.getX();
              downY = event.getY();
              mSwipeDetected = Action.None;
              return false; // allow other events like Click to be processed
          }
          case MotionEvent.ACTION_MOVE: {
              upX = event.getX();
              upY = event.getY();
  
              float deltaX = downX - upX;
              float deltaY = downY - upY;
  
              // horizontal swipe detection
              if (Math.abs(deltaX) > MIN_DISTANCE) {
                  // left or right
                  if (deltaX < 0) {
                      Logger.show(Log.INFO,logTag, "Swipe Left to Right");
                      mSwipeDetected = Action.LR;
                      return true;
                  }
                  if (deltaX > 0) {
                      Logger.show(Log.INFO,logTag, "Swipe Right to Left");
                      mSwipeDetected = Action.RL;
                      return true;
                  }
              } else 
  
                  // vertical swipe detection
                  if (Math.abs(deltaY) > MIN_DISTANCE) {
                      // top or down
                      if (deltaY < 0) {
                          Logger.show(Log.INFO,logTag, "Swipe Top to Bottom");
                          mSwipeDetected = Action.TB;
                          return false;
                      }
                      if (deltaY > 0) {
                          Logger.show(Log.INFO,logTag, "Swipe Bottom to Top");
                          mSwipeDetected = Action.BT;
                          return false;
                      }
                  } 
              return true;
          }
          }
          return false;
      }
  }
  

  回复于 2024-05-03T07:05:59+08:00
• 54

  我认为你可以使用 OnTouchListener 并通过 MotionEvents ，如 ACTION_DOWN ， ACTION_MOVE ， UP 或 CANCEL 来捕捉列表项目的填充，初始和当前运动 .

  回复于 2024-05-03T07:05:59+08:00