有关自定义画廊IM使用与imageviews的GridView创建，我想读从标清存储的图像。这给了我巨大的性能比较的问题，因为它会读取整个图像，而这个加载到ImageView的。

我怎样才能读取一个大的图像在运行时用拇指强调性能？

  
文件imgFile =新的文件（img.getInternalImagePath（））;如果（imgFile.exists（））{    位图MYBITMAP;    尝试{        BitmapFactory.Options选项=新BitmapFactory.Options（）;        options.inSampleSize = 4;        MYBITMAP = BitmapFactory.de codeStream（新FlushedInputStream（新        的FileInputStream（imgFile）），空，期权）;        picture.setImageBitmap（MYBITMAP）; 
 
 

先谢谢了。

/安迪

编辑：增加了一些code看看

 最终诠释THUMBNAIL_SIZE = 64;FIS的FileInputStream =新的FileInputStream（文件名）;位图imageBitmap = BitmapFactory.de codeStream（FIS）;imageBitmap = Bitmap.createScaledBitmap（imageBitmap，THUMBNAIL_SIZE，THUMBNAIL_SIZE，FALSE）;ByteArrayOutputStream BAOS =新ByteArrayOutputStream（）;imageBitmap.com preSS（Bitmap.Com pressFormat.JPEG，100，BAOS）;为imageData = baos.toByteArray（）; 

或

 位图thumbBitmap = ThumbnailUtils.extractThumbnail（BitmapFactory.de codeFILE（文件路径），thumbWidth，thumbHeight）; 

For a custom gallery im creating using a gridview with imageviews, i wish to read an image from sd storage. This gives me huge perfomance issues, because it will read the whole image, and load this into the imageview.

How can i read a large image as a thumb in runtime with emphasis on performance?

File imgFile = new  File(img.getInternalImagePath());
if(imgFile.exists()){
    Bitmap myBitmap;
    try {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = 4; 
        myBitmap = BitmapFactory.decodeStream(new FlushedInputStream(new
        FileInputStream(imgFile)),null,options);
        picture.setImageBitmap(myBitmap);

Thanks in advance.

/Andy

EDIT: Added some code to look at

final int THUMBNAIL_SIZE = 64;
FileInputStream fis = new FileInputStream(fileName);
Bitmap imageBitmap = BitmapFactory.decodeStream(fis);  
imageBitmap = Bitmap.createScaledBitmap(imageBitmap, THUMBNAIL_SIZE, THUMBNAIL_SIZE, false);  
ByteArrayOutputStream baos = new ByteArrayOutputStream();  
imageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
imageData = baos.toByteArray();

OR

Bitmap thumbBitmap = ThumbnailUtils.extractThumbnail(BitmapFactory.decodeFile(filePath), thumbWidth, thumbHeight);