从资源图像的缩略图 [英] Thumbnail of an image from resources

问题描述

我想打一个形象。图像的缩略图是在国土资源，drawable.Can任何人帮助我​​。

I want to make a thumbnail of an image.The image is in the resourse-drawable.Can anyone help me.

推荐答案

试试这个code

     im=(ImageView)findViewById(R.id.imageView1);

    byte[] imageData = null;

    try 
    {

    final int THUMBNAIL_SIZE = 64;
    //InputStream is=getAssets().open("apple-android-battle.jpg");
    FileInputStream fis = new FileInputStream("/sdcard/apple.jpg");
    Bitmap imageBitmap = BitmapFactory.decodeStream(fis);

    Float width = new Float(imageBitmap.getWidth());
    Float height = new Float(imageBitmap.getHeight());
    Float ratio = width/height;
    imageBitmap = Bitmap.createScaledBitmap(imageBitmap, (int)(THUMBNAIL_SIZE * ratio), THUMBNAIL_SIZE, false);

    ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
    imageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
    imageData = baos.toByteArray();
    im.setImageBitmap(imageBitmap);
    }
    catch(Exception ex) {

    }

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