从apk文件获取minSdkVersion和targetSdkVersion

使用aapt:

aapt list -a package.apk | grep SdkVersion

您将看到十六进制版本号.例如:

答:android:minSdkVersion(0x0101020c)=(类型0x10)0x3 A:android:targetSdkVersion(0x01010270)=(类型0x10)0xc

对于这个apk,minSdkVersion是0x3即3,而targetSdkVersion是0xc即12.

编辑答案如下: -

然后你可以通过逆向工程来实现它你可以通过以下步骤从apk获取源代码解码.apk文件的步骤,分步方法:步骤1:

Make a new folder and copy over the .apk file that you want to decode.

Now rename the extension of this .apk file to .zip (e.g. rename from filename.apk to filename.zip) and save it. Now you can access the classes.dex files, etc. At this stage you are able to see drawables but not xml and java files, so continue.

第2步:

Now extract this .zip file in the same folder (or NEW FOLDER).

Download dex2jar and extract it to the same folder (or NEW FOLDER).

Move the classes.dex file into the dex2jar folder.

Now open command prompt and change directory to that folder (or NEW FOLDER). Then write d2j-dex2jar classes.dex (for mac terminal or ubuntu write ./d2j-dex2jar.sh classes.dex) and press enter. You now have the classes.dex.dex2jar file in the same folder.

Download java decompiler, double click on jd-gui, click on open file, and open classes.dex.dex2jar file from that folder: now you get class files.

Save all of these class files (In jd-gui, click File -> Save All Sources) by src name. At this stage you get the java source but the .xml files are still unreadable, so continue.

第3步:

现在打开另一个新文件夹

Put in the .apk file which you want to decode

Download the latest version of apktool AND apktool install window (both can be downloaded from the same link) and place them in the same folder

Download framework-res.apk and put it in the same folder (Not all apk file need this file, but it doesn't hurt)

Open a command window

Navigate to the root directory of APKtool and type the following command: apktool if framework-res.apk

apktool d myApp.apk (where myApp.apk denotes the filename that you want to decode)

现在你在该文件夹中获得了一个文件夹,可以轻松读取apk的xml文件.第4步:

这不是任何步骤只是将两个文件夹的内容(在这种情况下都是新文件夹)复制到单个文件夹

并享受源代码......

如果您只需要minSdkVersion和targetSdkVersion以及下载的apk文件中的许多其他详细信息。您需要的只是aapt工具，您可以在终端中运行以下命令。

aapt dump badging yourapk.apk

您可以为minSdk为sdkVersion grep

aapt dump badging yourapk.apk | grep sdkVersion

我不相信这是可以自己做的,并且没有预先制作的api.读取和解析AndroidManifest的当前方法根本不考虑minSdkVersion.

为了在不使用现成功能的情况下检查您的apk文件,您最终需要手动将其添加到资产管理器.并且该方法标有"不供应用程序使用",根据我的经验,这通常意味着从应用程序调用它不是一个好主意.

http://androidxref.com/5.1.1_r6/xref/frameworks/base/core/java/android/content/res/AssetManager.java#612

如果你设法打电话:

public final int addAssetPath(String path) {

从您的应用程序中,您应该能够通过解析XML文件来获取minSdkVersion,请考虑以下代码:

private static final String ANDROID_MANIFEST_FILENAME = "AndroidManifest.xml";

....
method:

final int cookie = loadApkIntoAssetManager(assets, apkPath, flags);

Resources res = null;
XmlResourceParser parser = null;
try {
    res = new Resources(assets, mMetrics, null);
    assets.setConfiguration(0, 0, null, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            Build.VERSION.RESOURCES_SDK_INT);
    parser = assets.openXmlResourceParser(cookie, ANDROID_MANIFEST_FILENAME);

    final String[] outError = new String[1];
    final Package pkg = parseBaseApk(res, parser, flags, outError);
    if (pkg == null) {
        throw new PackageParserException(mParseError,
                apkPath + " (at " + parser.getPositionDescription() + "): " + outError[0]);
    }
}

代码:http: //androidxref.com/5.1.1_r6/xref/frameworks/base/core/java/android/content/pm/PackageParser.java#863

您应该能够使用XmlResourceParser解析AndroidManifest文件并找到minSdkVersion的元素.

如果您想自己尝试一下,只需复制以下静态方法并调用getMinSdkVersion(yourApkFile):

/**
 * Parses AndroidManifest of the given apkFile and returns the value of
 * minSdkVersion using undocumented API which is marked as
 * "not to be used by applications"
 * 
 * @param apkFile
 * @return minSdkVersion or -1 if not found in Manifest
 * @throws IOException
 * @throws XmlPullParserException
 */
public static int getMinSdkVersion(File apkFile) throws IOException,
        XmlPullParserException {

    XmlResourceParser parser = getParserForManifest(apkFile);
    while (parser.next() != XmlPullParser.END_DOCUMENT) {

        if (parser.getEventType() == XmlPullParser.START_TAG
                && parser.getName().equals("uses-sdk")) {
            for (int i = 0; i < parser.getAttributeCount(); i++) {
                if (parser.getAttributeName(i).equals("minSdkVersion")) {
                    return parser.getAttributeIntValue(i, -1);
                }
            }
        }
    }
    return -1;

}

/**
 * Tries to get the parser for the given apkFile from {@link AssetManager}
 * using undocumented API which is marked as
 * "not to be used by applications"
 * 
 * @param apkFile
 * @return
 * @throws IOException
 */
private static XmlResourceParser getParserForManifest(final File apkFile)
        throws IOException {
    final Object assetManagerInstance = getAssetManager();
    final int cookie = addAssets(apkFile, assetManagerInstance);
    return ((AssetManager) assetManagerInstance).openXmlResourceParser(
            cookie, "AndroidManifest.xml");
}

/**
 * Get the cookie of an asset using an undocumented API call that is marked
 * as "no to be used by applications" in its source code
 * 
 * @see <a
 *      href="http://androidxref.com/5.1.1_r6/xref/frameworks/base/core/java/android/content/res/AssetManager.java#612">AssetManager.java#612</a>
 * @return the cookie
 */
private static int addAssets(final File apkFile,
        final Object assetManagerInstance) {
    try {
        Method addAssetPath = assetManagerInstance.getClass().getMethod(
                "addAssetPath", new Class[] { String.class });
        return (Integer) addAssetPath.invoke(assetManagerInstance,
                apkFile.getAbsolutePath());
    } catch (NoSuchMethodException e) {
        e.printStackTrace();
    } catch (InvocationTargetException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return -1;
}

/**
 * Get {@link AssetManager} using reflection
 * 
 * @return
 */
private static Object getAssetManager() {
    Class assetManagerClass = null;
    try {
        assetManagerClass = Class
                .forName("android.content.res.AssetManager");
        Object assetManagerInstance = assetManagerClass.newInstance();
        return assetManagerInstance;
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (InstantiationException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return null;
}

您可能还需要一个反射调用来设置它:

assets.setConfiguration(0, 0, null, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            Build.VERSION.RESOURCES_SDK_INT);

无法保证它能够正常工作(也不会对您的手机造成不利影响)操作应该是安全的,因为您正在创建一个新的AssetManager而不依赖于您的应用程序的AssetManager.从C++代码中快速浏览一下,它似乎没有被添加到任何全局列表中.

代码:http: //androidxref.com/5.1.1_r6/xref/frameworks/base/libs/androidfw/AssetManager.cpp#173

将apk复制到一个新目录:

final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final List pkgAppsList = getPackageManager().queryIntentActivities(mainIntent, 0);
for (Object object : pkgAppsList) {
   ResolveInfo info = (ResolveInfo) object;
   File file = new File(info.activityInfo.applicationInfo.publicSourceDir);
   // Copy the .apk file to wherever
}

以下方法将AndroidManifest读入byte []进行处理:

public void getIntents(String path_to_apk) {
 try {
       JarFile jf = new JarFile(path_to_apk);
       InputStream is = jf.getInputStream(jf.getEntry("AndroidManifest.xml"));
       byte[] xml = new byte[is.available()];
       int br = is.read(xml);
       //Tree tr = TrunkFactory.newTree();
       decompressXML(xml);
       //prt("XML\n"+tr.list());
  } catch (Exception ex) {
     console.log("getIntents, ex: "+ex);  ex.printStackTrace();
  }
} 

最后解压缩android manifest的xml:

  // decompressXML -- Parse the 'compressed' binary form of Android XML docs 
// such as for AndroidManifest.xml in .apk files
public static int endDocTag = 0x00100101;
public static int startTag =  0x00100102;
public static int endTag =    0x00100103;
public void decompressXML(byte[] xml) {
// Compressed XML file/bytes starts with 24x bytes of data,
// 9 32 bit words in little endian order (LSB first):
//   0th word is 03 00 08 00
//   3rd word SEEMS TO BE:  Offset at then of StringTable
//   4th word is: Number of strings in string table
// WARNING: Sometime I indiscriminently display or refer to word in 
//   little endian storage format, or in integer format (ie MSB first).
int numbStrings = LEW(xml, 4*4);

// StringIndexTable starts at offset 24x, an array of 32 bit LE offsets
// of the length/string data in the StringTable.
int sitOff = 0x24;  // Offset of start of StringIndexTable

// StringTable, each string is represented with a 16 bit little endian 
// character count, followed by that number of 16 bit (LE) (Unicode) chars.
int stOff = sitOff + numbStrings*4;  // StringTable follows StrIndexTable

// XMLTags, The XML tag tree starts after some unknown content after the
// StringTable.  There is some unknown data after the StringTable, scan
// forward from this point to the flag for the start of an XML start tag.
int xmlTagOff = LEW(xml, 3*4);  // Start from the offset in the 3rd word.
// Scan forward until we find the bytes: 0x02011000(x00100102 in normal int)
for (int ii=xmlTagOff; ii<xml.length-4; ii+=4) {
  if (LEW(xml, ii) == startTag) { 
    xmlTagOff = ii;  break;
  }
} // end of hack, scanning for start of first start tag

// XML tags and attributes:
// Every XML start and end tag consists of 6 32 bit words:
//   0th word: 02011000 for startTag and 03011000 for endTag 
//   1st word: a flag?, like 38000000
//   2nd word: Line of where this tag appeared in the original source file
//   3rd word: FFFFFFFF ??
//   4th word: StringIndex of NameSpace name, or FFFFFFFF for default NS
//   5th word: StringIndex of Element Name
//   (Note: 01011000 in 0th word means end of XML document, endDocTag)

// Start tags (not end tags) contain 3 more words:
//   6th word: 14001400 meaning?? 
//   7th word: Number of Attributes that follow this tag(follow word 8th)
//   8th word: 00000000 meaning??

// Attributes consist of 5 words: 
//   0th word: StringIndex of Attribute Name's Namespace, or FFFFFFFF
//   1st word: StringIndex of Attribute Name
//   2nd word: StringIndex of Attribute Value, or FFFFFFF if ResourceId used
//   3rd word: Flags?
//   4th word: str ind of attr value again, or ResourceId of value

// TMP, dump string table to tr for debugging
//tr.addSelect("strings", null);
//for (int ii=0; ii<numbStrings; ii++) {
//  // Length of string starts at StringTable plus offset in StrIndTable
//  String str = compXmlString(xml, sitOff, stOff, ii);
//  tr.add(String.valueOf(ii), str);
//}
//tr.parent();

// Step through the XML tree element tags and attributes
int off = xmlTagOff;
int indent = 0;
int startTagLineNo = -2;
while (off < xml.length) {
  int tag0 = LEW(xml, off);
  //int tag1 = LEW(xml, off+1*4);
  int lineNo = LEW(xml, off+2*4);
  //int tag3 = LEW(xml, off+3*4);
  int nameNsSi = LEW(xml, off+4*4);
  int nameSi = LEW(xml, off+5*4);

  if (tag0 == startTag) { // XML START TAG
    int tag6 = LEW(xml, off+6*4);  // Expected to be 14001400
    int numbAttrs = LEW(xml, off+7*4);  // Number of Attributes to follow
    //int tag8 = LEW(xml, off+8*4);  // Expected to be 00000000
    off += 9*4;  // Skip over 6+3 words of startTag data
    String name = compXmlString(xml, sitOff, stOff, nameSi);
    //tr.addSelect(name, null);
    startTagLineNo = lineNo;

    // Look for the Attributes
    StringBuffer sb = new StringBuffer();
    for (int ii=0; ii<numbAttrs; ii++) {
      int attrNameNsSi = LEW(xml, off);  // AttrName Namespace Str Ind, or FFFFFFFF
      int attrNameSi = LEW(xml, off+1*4);  // AttrName String Index
      int attrValueSi = LEW(xml, off+2*4); // AttrValue Str Ind, or FFFFFFFF
      int attrFlags = LEW(xml, off+3*4);  
      int attrResId = LEW(xml, off+4*4);  // AttrValue ResourceId or dup AttrValue StrInd
      off += 5*4;  // Skip over the 5 words of an attribute

      String attrName = compXmlString(xml, sitOff, stOff, attrNameSi);
      String attrValue = attrValueSi!=-1
        ? compXmlString(xml, sitOff, stOff, attrValueSi)
        : "resourceID 0x"+Integer.toHexString(attrResId);
      sb.append(" "+attrName+"=\""+attrValue+"\"");
      //tr.add(attrName, attrValue);
    }
    prtIndent(indent, "<"+name+sb+">");
    indent++;

  } else if (tag0 == endTag) { // XML END TAG
    indent--;
    off += 6*4;  // Skip over 6 words of endTag data
    String name = compXmlString(xml, sitOff, stOff, nameSi);
    prtIndent(indent, "</"+name+">  (line "+startTagLineNo+"-"+lineNo+")");
    //tr.parent();  // Step back up the NobTree

  } else if (tag0 == endDocTag) {  // END OF XML DOC TAG
    break;

  } else {
    prt("  Unrecognized tag code '"+Integer.toHexString(tag0)
      +"' at offset "+off);
    break;
  }
} // end of while loop scanning tags and attributes of XML tree
prt("    end at offset "+off);
} // end of decompressXML


public String compXmlString(byte[] xml, int sitOff, int stOff, int strInd) {
  if (strInd < 0) return null;
  int strOff = stOff + LEW(xml, sitOff+strInd*4);
  return compXmlStringAt(xml, strOff);
}


public static String spaces = "                                             ";
public void prtIndent(int indent, String str) {
  prt(spaces.substring(0, Math.min(indent*2, spaces.length()))+str);
}


// compXmlStringAt -- Return the string stored in StringTable format at
// offset strOff.  This offset points to the 16 bit string length, which 
// is followed by that number of 16 bit (Unicode) chars.
public String compXmlStringAt(byte[] arr, int strOff) {
  int strLen = arr[strOff+1]<<8&0xff00 | arr[strOff]&0xff;
  byte[] chars = new byte[strLen];
  for (int ii=0; ii<strLen; ii++) {
    chars[ii] = arr[strOff+2+ii*2];
  }
  return new String(chars);  // Hack, just use 8 byte chars
} // end of compXmlStringAt


// LEW -- Return value of a Little Endian 32 bit word from the byte array
//   at offset off.
public int LEW(byte[] arr, int off) {
  return arr[off+3]<<24&0xff000000 | arr[off+2]<<16&0xff0000
    | arr[off+1]<<8&0xff00 | arr[off]&0xFF;
} // end of LEW

PS我从这里检索了这些方法:

如何以编程方式获取应用程序的.apk文件

和这里:

如何解析.apk包中的AndroidManifest.xml文件