Lazylist中的图像出现压缩

Question

我使用Github的Lazylist项目制作预订阅读器。一切工作正常。

• 但在横向模式下图像变小。 打开的书目前的屏幕显示使得难以阅读文本，主要是因为拉伸（展开）问题。

这里是一个图像，让你清楚我想问什么。

I am getting this result. which is hard to read. 

I want this. 

我尝试以下

<ImageView 
    android:id="@+id/image" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:scaleType="fitXY" 
    android:src="@drawable/stub" /> 

但正如我上面所需的工作不。

我该如何做到这一点？

LazyLoader.java

public class ImageLoader { 

MemoryCache memoryCache=new MemoryCache(); 
FileCache fileCache; 
private Map<ImageView, String> imageViews=Collections.synchronizedMap(new WeakHashMap<ImageView, String>()); 
ExecutorService executorService; 

public ImageLoader(Context context){ 
    fileCache=new FileCache(context); 
    executorService=Executors.newFixedThreadPool(5); 
} 

final int stub_id=R.drawable.stub; 
public void DisplayImage(String url, ImageView imageView) 
{ 
    imageViews.put(imageView, url); 
    Bitmap bitmap=memoryCache.get(url); 
    if(bitmap!=null) 
     imageView.setImageBitmap(bitmap); 
    else 
    { 
     queuePhoto(url, imageView); 
     imageView.setImageResource(stub_id); 
    } 
} 

private void queuePhoto(String url, ImageView imageView) 
{ 
    PhotoToLoad p=new PhotoToLoad(url, imageView); 
    executorService.submit(new PhotosLoader(p)); 
} 

private Bitmap getBitmap(String url) 
{ 
    File f=fileCache.getFile(url); 

    //from SD cache 
    Bitmap b = decodeFile(f); 
    if(b!=null) 
     return b; 

    //from web 
    try { 
     Bitmap bitmap=null; 
     URL imageUrl = new URL(url); 
     HttpURLConnection conn = (HttpURLConnection)imageUrl.openConnection(); 
     conn.setConnectTimeout(30000); 
     conn.setReadTimeout(30000); 
     conn.setInstanceFollowRedirects(true); 
     InputStream is=conn.getInputStream(); 
     OutputStream os = new FileOutputStream(f); 
     Utils.CopyStream(is, os); 
     os.close(); 
     bitmap = decodeFile(f); 
     return bitmap; 
    } catch (Throwable ex){ 
     ex.printStackTrace(); 
     if(ex instanceof OutOfMemoryError) 
      memoryCache.clear(); 
     return null; 
    } 
} 

//decodes image and scales it to reduce memory consumption 
private Bitmap decodeFile(File f){ 
    try { 
     //decode image size 
     BitmapFactory.Options o = new BitmapFactory.Options(); 
     o.inJustDecodeBounds = true; 
     FileInputStream stream1=new FileInputStream(f); 
     BitmapFactory.decodeStream(stream1,null,o); 
     stream1.close(); 

     //Find the correct scale value. It should be the power of 2. 
     final int REQUIRED_SIZE=512; 
     int width_tmp=o.outWidth, height_tmp=o.outHeight; 
     int scale=1; 
     while(true){ 
      if(width_tmp/2<REQUIRED_SIZE || height_tmp/2<REQUIRED_SIZE) 
       break; 
      width_tmp/=2; 
      height_tmp/=2; 
      scale*=2; 
     } 

     //decode with inSampleSize 
     BitmapFactory.Options o2 = new BitmapFactory.Options(); 
     o2.inSampleSize=scale; 
     FileInputStream stream2=new FileInputStream(f); 
     Bitmap bitmap=BitmapFactory.decodeStream(stream2, null, o2); 
     stream2.close(); 
     return bitmap; 
    } catch (FileNotFoundException e) { 
    } 
    catch (IOException e) { 
     e.printStackTrace(); 
    } 
    return null; 
} 

//Task for the queue 
private class PhotoToLoad 
{ 
    public String url; 
    public ImageView imageView; 
    public PhotoToLoad(String u, ImageView i){ 
     url=u; 
     imageView=i; 
    } 
} 

class PhotosLoader implements Runnable { 
    PhotoToLoad photoToLoad; 
    PhotosLoader(PhotoToLoad photoToLoad){ 
     this.photoToLoad=photoToLoad; 
    } 

    @Override 
    public void run() { 
     try{ 
      if(imageViewReused(photoToLoad)) 
       return; 
      Bitmap bmp=getBitmap(photoToLoad.url); 
      memoryCache.put(photoToLoad.url, bmp); 
      if(imageViewReused(photoToLoad)) 
       return; 
      BitmapDisplayer bd=new BitmapDisplayer(bmp, photoToLoad); 
      Activity a=(Activity)photoToLoad.imageView.getContext(); 
      a.runOnUiThread(bd); 
     }catch(Throwable th){ 
      th.printStackTrace(); 
     } 
    } 
} 

boolean imageViewReused(PhotoToLoad photoToLoad){ 
    String tag=imageViews.get(photoToLoad.imageView); 
    if(tag==null || !tag.equals(photoToLoad.url)) 
     return true; 
    return false; 
} 

//Used to display bitmap in the UI thread 
class BitmapDisplayer implements Runnable 
{ 
    Bitmap bitmap; 
    PhotoToLoad photoToLoad; 
    public BitmapDisplayer(Bitmap b, PhotoToLoad p){bitmap=b;photoToLoad=p;} 
    public void run() 
    { 
     if(imageViewReused(photoToLoad)) 
      return; 
     if(bitmap!=null) 
      photoToLoad.imageView.setImageBitmap(bitmap); 
     else 
      photoToLoad.imageView.setImageResource(stub_id); 
    } 
} 

public void clearCache() { 
    memoryCache.clear(); 
    fileCache.clear(); 
} 

} 

Answer 1

这个解决我的问题

<ImageView 
    android:id="@+id/image" 
    android:layout_width="fill_parent" 
    android:layout_height="800dp" 
    android:scaleType="fitXY" 
    android:src="@drawable/stub" /> 

Answer 2

试试这个。

<ImageView 
android:id="@+id/image" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:src="@drawable/stub" />