Android 中 Assets目錄下 文件或文件夾的複製

1、文件或文件夾的複製

/*
		 * 下面兩個方法不是AsyncTask的接口
		 * 
		 * copyFileOrDir 	 目錄複製
		 * copyFile  		文件複製
		 */
		private void copyFileOrDir(String path) {
		    AssetManager assetManager = mContext.getAssets();
		    String assets[] = null;
		    try {
		        assets = assetManager.list(path);
		        //複製單個文件
		        if (assets.length == 0)
		        {
		            copyFile(path);
		        } 
		        //複製文件夾中的文件到另一個目錄中
		        else 
		        {		        	
		            for (int i = 0; i < assets.length; ++i) 
		            {
		            	Log.e("Path",path + "/" + assets[i]);
		                copyFileOrDir(path + "/" + assets[i]);
		            }
		        }
		    } catch (IOException ex) {
		        Log.e("tag", "I/O Exception", ex);
		    }
		}
		 
		private void copyFile(String filename) {
		    AssetManager assetManager = mContext.getAssets();
		 
		    InputStream in = null;
		    OutputStream out = null;
		    try {
		        in = assetManager.open(filename);
		        String newFileName = SDPath +"/"+filename;		       
		        Log.e("here",newFileName);
		        out = new FileOutputStream(newFileName);
		 
		        byte[] buffer = new byte[1024];
		        int read;
		        while ((read = in.read(buffer)) != -1) {
		            out.write(buffer, 0, read);
		        }
		        in.close();
		        in = null;
		        out.flush();
		        out.close();
		        out = null;
		    } catch (Exception e) {
		        Log.e("copyFile", e.getMessage());
		    }	 
		}