Android触摸次数增加了一倍？

Question

这个Android应用程序就好像我每次触摸屏幕时都会双击它，谁能看到为什么会发生这种情况？我有它日志“触摸＃” + [触摸的数量]，它并“触摸1”和“触摸2”在同一时间，同一“触摸3”和“触摸4”

package com.example.mondrianmaker; 

import java.util.ArrayList; 
import java.util.Random; 

import android.app.Activity; 
import android.graphics.Bitmap; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.graphics.Point; 
import android.graphics.drawable.BitmapDrawable; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Display; 
import android.view.MotionEvent; 
import android.view.Window; 
import android.view.WindowManager; 
import android.widget.LinearLayout; 
import android.widget.TextView; 


public class MainActivity extends Activity { 
    int width, height, x, y, color, touch; 
    ArrayList<Rectangle> rectangles, childsRect; 
    Bitmap bg; 
    Canvas canvas; 
    Display display; 
    LinearLayout ll; 
    Point size; 
    Paint paint; 
    Random rn; 
    Rectangle parentRect; 
    TextView text, info; 

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

     //***FULL SCREEN*** 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     //---FULL SCREEN--- 

     setContentView(R.layout.activity_main); 

     display = getWindowManager().getDefaultDisplay(); 
     size = new Point(); 
     display.getSize(size); 
     width = size.x; 
     height = size.y; 

     paint = new Paint(); //paint to color rectangle OBLI 

     bg = Bitmap.createBitmap(480, 800, Bitmap.Config.ARGB_8888); 
     canvas = new Canvas(bg); 

     ll = (LinearLayout) findViewById(R.id.mondrian); 

     rectangles = new ArrayList<Rectangle>(); 

     text = (TextView) findViewById(R.id.coordinates); 
     info = (TextView) findViewById(R.id.info); 
     parentRect = new Rectangle(0, 0, 480, 800); //create super parent rectangle 
     rectangles.add(parentRect);        //add super parent rectangle to list 
     touch = 0; 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     //Get Coordinate 
     x = (int) event.getX();     
     y = (int) event.getY(); 

     //set text view to clicked coordinates and number of rectangles on list 
     text.setText(x + ", " + y + "  rectangles: "+rectangles.size()); 

     //set rectangle color *randomly 
     setColor(); 
     paint.setColor(color); 

     //get rectangle clicked 
     parentRect = getRectParent(x, y); 

     //make children of rectangle clicked 
     childsRect = makeChilds(parentRect, x, y); 
     addChildsToRectanglesDeleteParentRect(childsRect, parentRect); 

     //check on childs 
//  text.setText(childsRect.get(0) + " " + childsRect.get(1)); 

     //get onTouch action 
     switch (event.getAction()) { 
//  case MotionEvent.ACTION_DOWN: 
//   text.setText(x + ", " + y); 
//   ll.setBackgroundDrawable(new BitmapDrawable(bg)); 
//  case MotionEvent.ACTION_MOVE: 
//   ll.setBackgroundDrawable(new BitmapDrawable(bg)); 
//   System.out.println("22222"); 
     case MotionEvent.ACTION_UP: 
      touch++; 
      Log.i("info", "touch # " + touch); 
//   ll.setBackgroundDrawable(new BitmapDrawable(bg)); 
//   System.out.println("33333"); 
     } 
     return false; 
    } 

    public void addChildsToRectanglesDeleteParentRect(ArrayList<Rectangle> childsRect, Rectangle parentRect){ 
     rectangles.remove(parentRect); 
     rectangles.add(childsRect.get(0)); 
     rectangles.add(childsRect.get(1)); 
     int i = 0; 
     Log.i("info", "length= "+rectangles.size()); 
     for(Rectangle e : rectangles){ 
      Log.i("info", i+"--> "+ e.toString()); 
      i++; 
     } 

    } 

    public ArrayList<Rectangle> makeChilds(Rectangle parent, int x, int y){ 
     ArrayList<Rectangle> defaults = new ArrayList<Rectangle>(); 
     defaults.add(new Rectangle(0,0,240,800)); 
     defaults.add(new Rectangle(240,0, 480, 800)); 
     ArrayList<Rectangle> childs = new ArrayList<Rectangle>(); 
     for(Rectangle rect : rectangles){ 
      if(x>=rect.getX1() && x<=rect.getX2() && y>=rect.getY1() && y<=rect.getY2()){ 
       childs.add(new Rectangle(rect.getX1(), rect.getY1(), rect.getX2()/2, rect.getY2()/2)); 
       childs.add(new Rectangle(rect.getX2()/2, rect.getY2()/2, rect.getX2(), rect.getY2())); 
      } 
     } 
     if(childs.size()>0){ 
      return childs; 
     }else{ 
      info.setText(x + ", " + y + " " + parent + "no childs for this parent"); 
      return defaults; 
     } 

    } 

    public Rectangle getRectParent(int x, int y){ 
     for(Rectangle g : rectangles){ 

      if (x > g.getX1() && x < g.getX2() && y > g.getY1() && y < g.getY2()){ 
       info.setText(info.getText() + "\n " + g.getX1()+"_x=" + x +"_"+g.getX2() +"\n"+g.getY1()+"_y="+y+"_"+g.getY2()); 
       return g; 
      } 
     } 

     return null; 
    } 

    public void setColor(){ 
     rn = new Random(); 

     switch ((int) Math.floor(rn.nextDouble() * 5)) { 
     case 0: 
      color = Color.BLACK; 
      break; 
     case 1: 
      color = Color.RED; 
      break; 
     case 2: 
      color = Color.YELLOW; 
      break; 
     case 3: 
      color = Color.WHITE; 
      break; 
     case 4: 
      color = Color.GREEN; 
      break; 
     } 
    } 
} 

Answer 1

我测试了你的代码并且没有任何问题，但是你可以尝试使用if语句。还要确保你的switch语句返回true或break;它没有使用任何一种工作;这里你可以如何使用if语句：

if(event.getAction() == MotionEvent.ACTION_UP){ 
      // up is called 
      touch++; 
      Log.i("info", "touch # " + touch); 
      return true; 
     } 

Answer 2

您可能获得ACTION_DOWN和ACTION_MOVE并计算两者。

尝试将您的++移动到开关盒内部ACTION_DOWN。