在 Android 中的 ImageView 中加载图像
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Load Images in ImageView in Android
提问by Paresh Mayani
In my application....there are some images like temp1.jpg, temp2.jpg .....upto temp35.jpg,
在我的应用程序中......有一些图像，如 temp1.jpg、temp2.jpg .....upto temp35.jpg，
so on button clicking, i want to load one-by-one image in ImageView .... i want to do like:
所以在单击按钮时，我想在 ImageView 中加载一张一张的图像......我想做：
cnt=1;
imagename="temp" + cnt + ".jpg";
cnt++;
cnt=1;
imagename="temp" + cnt + ".jpg";
cnt++;
so my confusion is that "is there anyway to load an image in imageview from string(imagename variable) like temp1.jpg,etc."
所以我的困惑是“无论如何都可以从字符串（图像名称变量）（如 temp1.jpg 等）加载图像视图中的图像。”
采纳答案by Paresh Mayani
I implemented below solution and it's working for me:
我实现了以下解决方案，它对我有用：
while(cnt!=n)
{
String icon="temp" + cnt;
int resID =
getResources().getIdentifier(icon,"drawable","testing.Image_Demo");
imageView.setImageResource(resID);
cnt++;
}
回答by xil3
You could try this:
你可以试试这个：
int cnt = 1;
//Bitmap bitmap = BitmapFactory.decodeFile("temp" + cnt + ".jpg");
int imageResource = getResources().getIdentifier("drawable/temp" + cnt + ".jpg", null, getPackageName());
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), imageResource);
imageView.setImageBitmap(bitmap);
cnt++;
Hope that's what you were looking for.
希望这就是你要找的。
回答by slup
Why not something like
为什么不像
File f = new File(PathToFiles + "/temp" + cnt + ".jpg");
if (f.exists()) {
Drawable d = Drawable.createFromPath(f);
imageview.setImageDrawable(d);
}
回答by Itsik
I don't know if this is the best solution but you can make a Hashtable that maps the image names to the resources.
我不知道这是否是最好的解决方案，但您可以制作一个将图像名称映射到资源的哈希表。
Hashtable map;
map.put("temp1", R.drawable.temp1) // assuming temp1.jpg is in /drawable
and then you could load the ImageView from a drawable.
然后你可以从一个drawable加载ImageView。
String imageName = "temp" + n;
Drawable d = getResources().getDrawable((int)map[imageName]);
ImageView i = new ImageView(this);
i.setImageResource(d);
