Android：如何更改每次触摸的图像

Question

我想在用户每次触摸屏幕时更改图像。我想让用户点击屏幕，图像每次都会改变，第5次触摸时，它会循环回到带有添加文本的原始图像。

我已经看过

How would I set an ImageButton to change only when my finger is touching it

我曾经尝试都IUevents和StateListdrawable。我无法弄清楚如何在每次触摸后实际更改图像（屏幕中的任何位置）。

Answer 1

为什么你不能使用正常的ImageView？这样做：

ArrayList<Integer> picList = new ArrayList<Integer>(); 
// populate the list with the int value of the pictures in drawable. 
picList.add(R.drawable.apple); 
picList.add(R.drawable.horse); 
//etc 
int touches = 0; 
int loop = 0; 
ImageView picture = (ImageView) findViewById(R.id.your_picture); 
picture.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      if (touches < 4) 
       v.setBackgroundDrawable(picList.get(touches)); 
       touches++; 
      } else { 
       touches = 0; 
       loop = 1; 
       v.setBackgroundDrawable(picList.get(touches)); 
      } 
      if (loop = 1){ 
      // Create a TextView and set the text or make it in the xml with Visible="Gone" and make is visible here. 
      } 
    }); 

Answer 2

您需要创建自定义类，它扩展ImageView现在将此图像视图显示到整个屏幕。

> First store the path/location of images into an array/list etc. 
> In custom class implement the onTouch event. 
> create the counter object in this custom class. 
> now in onTouch check in down event that check the counter value with array size if counter==array.length()-1 then set counter as 0 otherwise increment in counter object. 
> now get the path of the image and set into the imageview as background