Android Development and Implementation of the Monitoring Interface Encapsulation Class for Control Double click Events

When writing a project, it is required to imitate the WeChat circle of friends and double-click the top bar to set the top, so the double-click callback interface is packaged, which is convenient for everyone to use

/**
 * Created by Administrator on 2018/4/24.
 *  Double-click 
 */
 
public class OnDoubleClickListener implements View.OnTouchListener{
 
  private int count = 0;// Number of clicks 
  private long firstClick = 0;// No. 1 1 Time per click 
  private long secondClick = 0;// No. 1 2 Time per click 
  /**
   *  Two-click interval in milliseconds 
   */
  private final int totalTime = 1000;
  /**
   *  Custom callback interface 
   */
  private DoubleClickCallback mCallback;
 
  public interface DoubleClickCallback {
    void onDoubleClick();
  }
  public OnDoubleClickListener(DoubleClickCallback callback) {
    super();
    this.mCallback = callback;
  }
 
  /**
   *  Touch event handling 
   * @param v
   * @param event
   * @return
   */
  @Override
  public boolean onTouch(View v, MotionEvent event) {
    if (MotionEvent.ACTION_DOWN == event.getAction()) {// Press 
      count++;
      if (1 == count) {
        firstClick = System.currentTimeMillis();// Record number 1 Time per click 
      } else if (2 == count) {
        secondClick = System.currentTimeMillis();// Record number 2 Time per click 
        if (secondClick - firstClick < totalTime) {// Judge 2 Whether the time interval of the second click is within the set interval time 
          if (mCallback != null) {
            mCallback.onDoubleClick();
          }
          count = 0;
          firstClick = 0;
        } else {
          firstClick = secondClick;
          count = 1;
        }
        secondClick = 0;
      }
    }
    return true;
  }
}

Specific application key codes:

 /**
   *  Top bar double-click , Set top 
   */
  private void titleDoubleOnClick(){
    titleLayout.setOnTouchListener(new OnDoubleClickListener(new OnDoubleClickListener.DoubleClickCallback() {
      @Override
      public void onDoubleClick() {
        listView_neighbour.setSelection(0);// Handle double-click events 
      }
    }));
  }

This article provides us with Android development control double-click event monitoring interface encapsulation class, we can use it, more about Android double-click event skills please see the following links