文件管理器浏览APK显示其缩略图

mediatek/packages/apps/FileManager/src/com/mediatek/filemanager/IconManager.java
文件中添加如下方法
//get
the icon of the  file
    public Drawable
getFileIcon1(FileInfo fileInfo) {
      
 String mAPKFilePath="";
    File
apkFile=fileInfo.getFile();
     
 mAPKFilePath=apkFile.getPath();
      
 if(mContext==null){
        return
null;
    }
      
     mPm=mContext.getPackageManager();
  
         PackageInfo info =
mPm.getPackageArchiveInfo(mAPKFilePath,
               
PackageManager.GET_ACTIVITIES);
      
     if (info != null)
{
             
     ApplicationInfo appInfo =
info.applicationInfo;
          
         appInfo.sourceDir =
mAPKFilePath;
          
     appInfo.publicSourceDir =
mAPKFilePath;
         
         try
{
          
             return
appInfo.loadIcon(mPm);
        
         } catch (OutOfMemoryError e)
{
              
         System.out.println("Fail loadIcon :
" +
e);
              
     }
      
     }
        return
null;
  
}
在getIcon（**）方法中添加如下语句：

if(!fileInfo.isDirectory()){
            
String
filename=fileInfo.getFileName();
            
if(filename.endsWith(".apk")){
                   
Drawable
apkIcon=getFileIcon1(fileInfo);
                 
if(apkIcon!=null){
                        
Bitmap.Config
config=apkIcon.getOpacity()!=PixelFormat.OPAQUE?Bitmap.Config.ARGB_8888:Bitmap.Config.RGB_565; 
//将Drawable转变为Bitmap
      
          Bitmap
bitmap=Bitmap.createBitmap(48,48,
config);
                        
Canvas canvas=new Canvas(bitmap);
      
      apkIcon.setBounds(0, 0, 48,
48);
                        
apkIcon.draw(canvas);
                        
icon= bitmap;        
 
                    
}
            
}   
  
 }        
 
fileInfo.isDirectory()  //判断文件是否是目录

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