android android 判斷是否滑動

標籤：

（轉自：http://blog.csdn.net/angle_rupert/article/details/6255522）

聲明：

1     float x_temp01 = 0.0f;2     float y_temp01 = 0.0f;3     float x_temp02 = 0.0f;4     float y_temp02 = 0.0f; 

重寫Activity的onTouchEvent方法：

 1  @Override   2     public boolean onTouchEvent(MotionEvent event) 3     { 4         //獲得當前座標 5             float x = event.getX(); 6             float y = event.getY(); 7              8             switch(event.getAction()) 9             {10                     case MotionEvent.ACTION_DOWN: 11                     {12                         x_temp01 = x;13                         y_temp01 = y;14                     }15                     break;16                     case MotionEvent.ACTION_UP: 17                     {18                         x_temp02 = x;19                         y_temp02 = y;20                         21                         if(x_temp01!=0 && y_temp01!=0)//22                         {23                                 // 比較x_temp01和x_temp0224                                 // x_temp01>x_temp02         //向左25                                 // x_temp01==x_temp02         //豎直方向或者沒動26                                 // x_temp01<x_temp02         //向右27                                 28                                 if(x_temp01>x_temp02)//向左29                                 {30                                         //移動了x_temp01-x_temp0231                                 }32                                 33                                 if(x_temp01<x_temp02)//向右34                                 {35                                         //移動了x_temp02-x_temp0136                                 }37                         }38                     }39                     break;40                     case MotionEvent.ACTION_MOVE:41                     {42                             43                     }44                     break;45 46             }47             return super.onTouchEvent(event);48     }

注經自己測試可行，簡單好用；

自己更改判斷是否滑動：

 1         case MotionEvent.ACTION_DOWN: { 2             isMove = false; 3             downX=x; 4             downY=y; 5                         break; 6                      } 7         case MotionEvent.ACTION_UP: { 8             upX =x; 9             upY=y;10             if ((upX-downX!=0)||(upY-downY!=0))11                 isMove=true;12             else13                 isMove=false;14                         break;15                         }

 

android android 判斷是否滑動