如何直接从一个.zip文件读取文件，而无需在Android中提取它 [英] How to read a file directly from a .zip file without extracting it in android

问题描述

我一直在Android在过去的几个月里，现在我的问题是读取放在SD卡的.zip文件。我已经成功地完成了编码下载对SD卡的.zip文件。

我已经下载到SD卡img.zip文件。这img.zip包含5个图像文件。而不是解压img.zip我可以直接读取其内容现在...？如果是plz帮助。我看见几个例子在互联网，但他们都说解压缩，然后用，我想避免的那部分，因为我只是想设置图片为ImageView的。

  ImageView的IMV =新ImageView的（本）;
 imv.setImageURI（Uri.parse（// SD卡/ 1.png））;
 

这是如下载一张照片，并设置IMV其实际工作的源泉。现在我想的是什么，如下图所示。

  imv.setImageURI（Uri.parse（// SD卡/ img.zip / 1.png））;
 

我想这一点，但在我的布局我看不到图像。

能不能做到？plz帮助...

我得到了它由以下code工作....

  {尝试
                 位图mBackground = NULL;
                    FIS的FileInputStream =新的FileInputStream（// SD卡/ tp.zip）;
                    ZipInputStream ZIS =新ZipInputStream（FIS）;
                    ZipEntry的泽= NULL;
                    而（（ZE = zis.getNextEntry（））！= NULL）{
                        如果（ze.getName（）。等于（1.png））{
                            Toast.makeText（CON，发现，2）.show（）;
                            mBackground = BitmapFactory.de codeStream（ZIS）;
                            imv.setImageBitmap（mBackground）;
                            打破;
                        }
                    }
                }赶上（FileNotFoundException异常五）{
                    e.printStackTrace（）;
                }赶上（IOException异常五）{
                    e.printStackTrace（）;
                }
 

解决方案

尝试

  imv.setImageURI（Uri.parse（// SD卡/ img.zip /1.png！））;
 

I have been working on android for the past few months, now the problem for me is to read a .zip file placed on sdcard. I have successfully done the coding for downloading the .zip file on the sdcard.

I have img.zip file downloaded on to the sdcard. This img.zip contains 5 image files. Now instead of unzipping the img.zip can i directly read its content...??? if yes plz help. I saw few examples over internet but they all say to unzip and then use, i want to avoid that part because i simply want to set the images for an imageview.

 ImageView imv = new ImageView(this);
 imv.setImageURI(Uri.parse("//sdcard/1.png"));

this is like downloading a single image and setting the source of imv which actually works. Now what i want is something as shown below.

 imv.setImageURI(Uri.parse("//sdcard/img.zip/1.png"));

I tried this, but in my layout i don't see the images.

can it be done... plz help...

I got it working by the following code....

 try { 
                 Bitmap mBackground=null;
                    FileInputStream fis = new FileInputStream("//sdcard/tp.zip"); 
                    ZipInputStream zis = new ZipInputStream(fis); 
                    ZipEntry ze = null; 
                    while ((ze = zis.getNextEntry()) != null) { 
                        if (ze.getName().equals("1.png")) {
                            Toast.makeText(con, "Found", 2).show();
                            mBackground = BitmapFactory.decodeStream(zis);
                            imv.setImageBitmap(mBackground);
                            break; 
                        } 
                    } 
                } catch (FileNotFoundException e) { 
                    e.printStackTrace(); 
                } catch (IOException e) { 
                    e.printStackTrace(); 
                } 

解决方案

Try

 imv.setImageURI(Uri.parse("//sdcard/img.zip!/1.png"));

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