从Android设备上的代码访问APK内容

发布于 2024-12-08 12:38:38 字数 757 浏览 3 评论 0原文

我需要从设备上运行的同一应用程序的代码访问我的应用程序 APK 的内容。我编写的这段代码运行良好，并在我的 2.2 和 2.3.3 设备上返回数据。

但是这是合法的方式吗？它适用于从2.1开始到任何未来或现有版本的所有版本吗？

主要原因是检测apk原始签名或重新打包的apk。

这是我访问 META-INF/CERT.RSA 的代码：

    String path = this.getApplication().getPackageCodePath();
    try
    {
        ZipFile zfile = new ZipFile(path);
        ZipEntry zentry = zfile.getEntry("META-INF/CERT.RSA");
        long siz = zentry.getSize();

        byte[] buf=new byte[(int) siz];
        InputStream istream = zfile.getInputStream(zentry);

        int ret = istream.read(buf);
        istream.close();

    }
    catch (IOException e)
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

提前谢谢您

原文

I need to access contents of my application APK from the code of this same application running on device.
I wrote this code that works perferctly well and return the datа on my 2.2 and 2.3.3 devices.

But Is it a legal way and will it work on all versions starting from 2.1 to any future or existing version?

The main reason is to detect apk original signature or repacked apk.

Here is my code of accessing META-INF/CERT.RSA:

    String path = this.getApplication().getPackageCodePath();
    try
    {
        ZipFile zfile = new ZipFile(path);
        ZipEntry zentry = zfile.getEntry("META-INF/CERT.RSA");
        long siz = zentry.getSize();

        byte[] buf=new byte[(int) siz];
        InputStream istream = zfile.getInputStream(zentry);

        int ret = istream.read(buf);
        istream.close();

    }
    catch (IOException e)
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

Thank you in advance

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