Java OnTouch（）事件仅在Android中对首次触摸不起作用

我正在开发android应用程序，并使用AChartEngine绘制图表。除了我用OnTouch（）方法捕获触摸屏上的坐标外，一切都正常工作。第一次触摸时，它不会返回任何坐标，Toast显示在左上角（由Toast.setGravity（）设置）。在随后的触摸中，它工作得非常好，只是不是我第一次点击或触摸屏幕时。我错在哪里

mChartView.setOnClickListener(new View.OnClickListener() {
             Toast test;
            public void onClick(View v) {
              SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
              v.setOnTouchListener(new OnTouchListener() {
               public boolean onTouch(View v, MotionEvent event) {

                      xaxis =  event.getX();
                      yaxis =  event.getY(); 
                      xx = (int) xaxis;
                    yy = (int) yaxis;
            return false;
                    }
                });


              if (seriesSelection != null) {

                  int status_index = seriesSelection.getSeriesIndex();
                  int equipment_index = seriesSelection.getPointIndex();
                  double duration_value = seriesSelection.getValue();

                  if(status_index == 0)
                  {
                      if(equipment_index == 0)
                      {
                          duration_value = EquipmentHoursDuration[0][1];
                      }
                      if(equipment_index == 1)
                      {
                          duration_value = EquipmentHoursDuration[1][1];
                      }
                      if(equipment_index == 2)
                      {
                          duration_value = EquipmentHoursDuration[2][1];
                      }
                      if(equipment_index == 3)
                      {
                          duration_value = EquipmentHoursDuration[3][1];
                      }
                      if(equipment_index == 4)
                      {
                          duration_value = EquipmentHoursDuration[4][1];
                      }
                      String final_status = titles[status_index];
               String final_equipment = EquipmentNamePartial[equipment_index];
                    test = Toast.makeText(
                            SalesBar.this,
                              "Status: " + final_status + '\n'
                            + " Equipment: " + final_equipment + '\n'
                            + " Duration: " + duration_value + " hours", Toast.LENGTH_SHORT);


                   test.setGravity(Gravity.TOP|Gravity.LEFT, xx, yy);

                      test.show();
                  }

                  else
                  {
                 String final_status = titles[status_index];
                 String final_equipment = EquipmentNamePartial[equipment_index];
                 if(equipment_index == 0)
              {
                  duration_value = EquipmentHoursDuration[0][0];
              }
              if(equipment_index == 1)
              {
                  duration_value = EquipmentHoursDuration[1][0];
              }
              if(equipment_index == 2)
              {
                  duration_value = EquipmentHoursDuration[2][0];
              }
              if(equipment_index == 3)
              {
                  duration_value = EquipmentHoursDuration[3][0];
              }
              if(equipment_index == 4)
              {
                  duration_value = EquipmentHoursDuration[4][0];
              }



                test = Toast.makeText(
                        SalesBar.this,
                          "Status: " + final_status + '\n'
                        + " Equipment: " + final_equipment + '\n'
                        + " Duration: " + duration_value + " hours", Toast.LENGTH_SHORT);

                     test.setGravity(Gravity.TOP|Gravity.LEFT, xx, yy);

                      test.show();
                  }
              }
            }
          });

---

当您调用第一个OnClick Listener时，只调用第一次触摸。之后，onClickListener将像往常一样被调用。

---

可能您可以尝试将onClickListener交换为onTouchListener。

这是您的代码。。。。。返回

true

而不是

false

mChartView.setOnTouchListener(new OnTouchListener() {

                public boolean onTouch(View v, MotionEvent event) {
                     if (MotionEvent.ACTION_DOWN == event.getAction()) {
                        xaxis =  event.getRawX();

                yaxis =  event.getRawY(); 
                xx = (int) xaxis;
                yy = (int) yaxis;
                    } else if (MotionEvent.ACTION_UP == event.getAction()) {
                        xaxis =  event.getX();
                          yaxis =  event.getY(); 
                          xx = (int) xaxis;
                        yy = (int) yaxis;
                    }
                    else{}

                    return false;
                }
            });


         mChartView.setOnClickListener(new View.OnClickListener() {
             Toast test;
            public void onClick(View v) {
              SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();




              if (seriesSelection != null) {

                  int status_index = seriesSelection.getSeriesIndex();
                  int equipment_index = seriesSelection.getPointIndex();
                  double duration_value = seriesSelection.getValue();

                  if(status_index == 0)
                  {
                      if(equipment_index == 0)
                      {
                          duration_value = EquipmentHoursDuration[0][1];
                      }
                      if(equipment_index == 1)
                      {
                          duration_value = EquipmentHoursDuration[1][1];
                      }
                      if(equipment_index == 2)
                      {
                          duration_value = EquipmentHoursDuration[2][1];
                      }
                      if(equipment_index == 3)
                      {
                          duration_value = EquipmentHoursDuration[3][1];
                      }
                      if(equipment_index == 4)
                      {
                          duration_value = EquipmentHoursDuration[4][1];
                      }
                      String final_status = titles[status_index];
                     String final_equipment = EquipmentNamePartial[equipment_index];
                    test = Toast.makeText(
                            SalesBar.this,
                              "Status: " + final_status + '\n'
                            + " Equipment: " + final_equipment + '\n'
                            + " Duration: " + duration_value + " hours", Toast.LENGTH_SHORT);



                     test.setGravity(Gravity.TOP|Gravity.LEFT, xx, yy);

                      test.show();
                  }

                  else
                  {
                 String final_status = titles[status_index];
                 String final_equipment = EquipmentNamePartial[equipment_index];
                 if(equipment_index == 0)
              {
                  duration_value = EquipmentHoursDuration[0][0];
              }
              if(equipment_index == 1)
              {
                  duration_value = EquipmentHoursDuration[1][0];
              }
              if(equipment_index == 2)
              {
                  duration_value = EquipmentHoursDuration[2][0];
              }
              if(equipment_index == 3)
              {
                  duration_value = EquipmentHoursDuration[3][0];
              }
              if(equipment_index == 4)
              {
                  duration_value = EquipmentHoursDuration[4][0];
              }



                test = Toast.makeText(
                        SalesBar.this,
                          "Status: " + final_status + '\n'
                        + " Equipment: " + final_equipment + '\n'
                        + " Duration: " + duration_value + " hours", Toast.LENGTH_SHORT);





                     test.setGravity(Gravity.TOP|Gravity.LEFT, xx, yy);

                      test.show();
                  }
              }
            }
          });

 public boolean onTouch(View v, MotionEvent event) {

                      xaxis =  event.getX();
                      yaxis =  event.getY(); 
                      xx = (int) xaxis;
                    yy = (int) yaxis;
            return false;

}

---

});

尝试在案例为onActionUp时捕获事件。通过调试，我可以确认OnTouch（）方法在第一次触摸时未被调用。请检查此处的答案：抱歉，我认为我没有完全理解它。您能在我的代码中为我演示如何执行它吗？谢谢