在Android中解压缩文件夹

Question

我尝试制作显示100张图片的应用程序。 我想压缩照片的文件夹，然后把它放在我的项目上。 现在我需要了解如何将zip文件夹复制到内部存储，然后在android中解压缩它？

Answer 1

你可以将你的.zip文件包含在apk的Assets文件夹中，并将它们放在代码中，将.zip复制到内部存储并使用ZipInputStream进行解压缩。

首页复印德.zip文件的内部存储，并解压缩文件后：

protected void copyFromAssetsToInternalStorage(String filename){ 
     AssetManager assetManager = getAssets(); 

     try { 
      InputStream input = assetManager.open(filename); 
      OutputStream output = openFileOutput(filename, Context.MODE_PRIVATE); 

      copyFile(input, output); 

     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 

    private void unZipFile(String filename){ 
     try { 
      ZipInputStream zipInputStream = new ZipInputStream(openFileInput(filename)); 
      ZipEntry zipEntry; 

      while((zipEntry = zipInputStream.getNextEntry()) != null){ 
       FileOutputStream zipOutputStream = openFileOutput(zipEntry.getName(), MODE_PRIVATE); 

       int length; 
       byte[] buffer = new byte[1024]; 

       while((length = zipInputStream.read(buffer)) > 0){ 
        zipOutputStream.write(buffer, 0, length); 
       } 

       zipOutputStream.close(); 
       zipInputStream.closeEntry(); 
      } 
      zipInputStream.close(); 

     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 

    private void copyFile(InputStream in, OutputStream out) throws IOException { 
     byte[] buffer = new byte[1024]; 
     int read; 
     while((read = in.read(buffer)) != -1){ 
      out.write(buffer, 0, read); 
     } 
    }