ImageView与图像

Question

从我在我的应用程序中使用ImageView，如下面的代码

ImageView menu=(ImageView)findViewById(R.id.imageView1);
@Override
public void onclick(View v)
{
    int id = v.getId();
    if(id==R.id.imageView1)
    {
         if (menuopen.getVisibility() == View.VISIBLE) {
                menuopen.setVisibility(View.GONE);
                menu.setImageResource(R.drawable.menu_close_image);
            } else {
                menuopen.setVisibility(View.VISIBLE);
                menu.setImageResource(R.drawable.menu_open_image);
            }
    }
}

在上面的代码中，基于菜单打开我正在更改可绘制资源中的图像，同时这样做我想知道屏幕中当前可见的图像。如何找到？

我想在代码中的其他位置使用图像信息。

Answer 1

you can have it like this


ImageView menu=(ImageView)findViewById(R.id.imageView1);
@Override
  public void onclick(View v)
  {
int id = v.getId();
if(id==R.id.imageView1)
  {
     if (menuopen.getVisibility() == View.VISIBLE) {
            menuopen.setVisibility(View.GONE);
            menu.setImageResource(R.drawable.menu_close_image);
     mCurrentImage=R.drawable.menu_close_image
        } else {
            menuopen.setVisibility(View.VISIBLE);
            menu.setImageResource(R.drawable.menu_open_image);
          mCurrentImage=R.drawable.menu_open_image
        }
}

}

Answer 2

试试如下：

ImageView menu=(ImageView)findViewById(R.id.imageView1);
@Override
public void onclick(View v)
{
    switch(v.getId())
    {
      case R.id.imageView1:
         if (menuopen.getVisibility() == View.VISIBLE) {
                menuopen.setVisibility(View.GONE);
                menu.setImageResource(R.drawable.menu_close_image);
            } else if (menuopen.getVisibility() == View.INVISIBLE) {
                menuopen.setVisibility(View.VISIBLE);
                menu.setImageResource(R.drawable.menu_open_image);
            }
      break;
     }
 }

Answer 3

private int[] imageArray = {
             R.drawable.image1,
             R.drawable.image2
         };

//将此图像设置为该imageview（菜单）的id

menu.setId(imageArray[i]);

//然后在onclick

if(menu.getId==R.drawable.image1{
//image1 is displaying
}else{
//image2 is displaying
}