Question

我有10张可绘画的图片。在xml中有textview，imageview和2个用于更改图像的按钮。图像随着下一个和后退按钮的点击而变化。但它在textview中只显示一个名称，并且名称在图像更改时不会更改。 Plz给我一个解决方案。这是主要活动。

  public class Main extends Activity { 
    private ImageView hImageViewPic; 
    private Button iButton, gButton; 
    private int currentImage = 0; 
  int[] images = { R.drawable.r1, R.drawable.r2, R.drawable.r3, R.drawable.r4, R.drawable.r5, R.drawable.r6, R.drawable.r7, R.drawable.r8, R.drawable.r9, R.drawable.r10 };
    public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.main); 
      hImageViewPic = (ImageView)findViewById(R.id.idImageViewPic); 
      iButton = (Button) findViewById(R.id.bnext);
      gButton = (Button) findViewById(R.id.bprev); 

     //Just set one Click listener for the image 

     iButton.setOnClickListener(iButtonChangeImageListener); 
     gButton.setOnClickListener(gButtonChangeImageListener);
  } 
     View.OnClickListener iButtonChangeImageListener = new OnClickListener() { 
        public void onClick(View v) {

     //Increase Counter to move to next Image 

       currentImage++;
       currentImage = currentImage % images.length; 
       hImageViewPic.setImageResource(images[currentImage]); 
   }
      };
     View.OnClickListener gButtonChangeImageListener = new OnClickListener() { 
        public void onClick(View v) { 
      //Increase Counter to move to next Image
         currentImage--; 
         currentImage = currentImage % images.length; 
         hImageViewPic.setImageResource(images[currentImage]);

        // I am using this to set image names in TextView 

        myPicText=(TextView) findViewById (R.id.idTextView);
        myPicText.findViewById (R.drawable.a1);
    } 
       };
     }

请指导我在图像视图中图像更改时更改图像名称时需要做些什么。

Answer 1

一种解决方案是制作并行String []：

String[] captions = { "Text for image1", "Text for image2",....};

然后在你的听众中做：

myPicText.setText(captions[currentImage]);

ImageView中图像更改时，图像名称在textview中不会更改

1 个答案: