JAVA 读取APK包信息以及签名信息

本段代码能够读取APK的版本、包名、签名信息

package com.sg.util;

import java.io.File;
import java.io.IOException;
import java.security.cert.X509Certificate;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

import org.xmlpull.v1.XmlPullParser;

import android.content.res.AXmlResourceParser;
import android.util.TypedValue;

/**
 * 
 * 
 * @ClassName: AnalysisApk
 * 
 * @Description:
 * 
 * @author rickicui
 * 
 * @date Jan 28, 2013 6:07:39 PM
 * 
 * 
 */
public class AnalysisApk {
/**
 * 解压 zip 文件(apk可以当成一个zip文件)，注意不能解压 rar 文件哦，只能解压 zip 文件 解压 rar 文件 会出现
 * java.io.IOException: Negative seek offset 异常 create date:2009- 6- 9
 * author:Administrator
 * 
 * @param apkUrl
 *            zip 文件，注意要是正宗的 zip 文件哦，不能是把 rar 的直接改为 zip 这样会出现
 *            java.io.IOException: Negative seek offset 异常
 * @param logoUrl
 *            图标生成的地址
 * @throws Exception
 * @throws IOException
 */
public static String[] unZip(String apkUrl, String logoUrl)
throws Exception {
// [0]:版本号;[1]包名;[2]签名
String[] st = new String[3];
byte b[] = new byte[1024];
int length;
ZipFile zipFile;
try {
zipFile = new ZipFile(new File(apkUrl));
Enumeration enumeration = zipFile.entries();
ZipEntry zipEntry = null;
while (enumeration.hasMoreElements()) {
zipEntry = (ZipEntry) enumeration.nextElement();

if (zipEntry.isDirectory()) {

} else {
if ("AndroidManifest.xml".equals(zipEntry.getName())) {
try {
AXmlResourceParser parser = new AXmlResourceParser();
parser.open(zipFile.getInputStream(zipEntry));
while (true) {
int type = parser.next();
if (type == XmlPullParser.END_DOCUMENT) {
break;
}
switch (type) {
case XmlPullParser.START_TAG: {
for (int i = 0; i != parser
.getAttributeCount(); ++i) {
if ("versionName".equals(parser
.getAttributeName(i))) {
st[0] = getAttributeValue(parser, i);
} else if ("package".equals(parser
.getAttributeName(i))) {
st[1] = getAttributeValue(parser, i);
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}

if ("META-INF/CERT.RSA".equals(zipEntry.getName())) {

X509Certificate publicKey = ApkSign
.readSignatureBlock(zipFile
.getInputStream(zipEntry));

st[2] = publicKey.getPublicKey().toString();
}

// if
// ("res/drawable-ldpi/icon.png".equals(zipEntry.getName()))
// {
// OutputStream outputStream = new FileOutputStream(
// logoUrl);
// InputStream inputStream = zipFile
// .getInputStream(zipEntry);
// while ((length = inputStream.read(b)) > 0)
// outputStream.write(b, 0, length);
// }
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
}
return st;
}

private static String getAttributeValue(AXmlResourceParser parser, int index) {
int type = parser.getAttributeValueType(index);
int data = parser.getAttributeValueData(index);
if (type == TypedValue.TYPE_STRING) {
return parser.getAttributeValue(index);
}
if (type == TypedValue.TYPE_ATTRIBUTE) {
return String.format("?%s%08X", getPackage(data), data);
}
if (type == TypedValue.TYPE_REFERENCE) {
return String.format("@%s%08X", getPackage(data), data);
}
if (type == TypedValue.TYPE_FLOAT) {
return String.valueOf(Float.intBitsToFloat(data));
}
if (type == TypedValue.TYPE_INT_HEX) {
return String.format("0x%08X", data);
}
if (type == TypedValue.TYPE_INT_BOOLEAN) {
return data != 0 ? "true" : "false";
}
if (type == TypedValue.TYPE_DIMENSION) {
return Float.toString(complexToFloat(data))
+ DIMENSION_UNITS[data & TypedValue.COMPLEX_UNIT_MASK];
}
if (type == TypedValue.TYPE_FRACTION) {
return Float.toString(complexToFloat(data))
+ FRACTION_UNITS[data & TypedValue.COMPLEX_UNIT_MASK];
}
if (type >= TypedValue.TYPE_FIRST_COLOR_INT
&& type <= TypedValue.TYPE_LAST_COLOR_INT) {
return String.format("#%08X", data);
}
if (type >= TypedValue.TYPE_FIRST_INT
&& type <= TypedValue.TYPE_LAST_INT) {
return String.valueOf(data);
}
return String.format("<0x%X, type 0x%02X>", data, type);
}

private static String getPackage(int id) {
if (id >>> 24 == 1) {
return "android:";
}
return "";
}

// / ILLEGAL STUFF, DONT LOOK :)
public static float complexToFloat(int complex) {
return (float) (complex & 0xFFFFFF00) * RADIX_MULTS[(complex >> 4) & 3];
}

private static final float RADIX_MULTS[] = { 0.00390625F, 3.051758E-005F,
1.192093E-007F, 4.656613E-010F };
private static final String DIMENSION_UNITS[] = { "px", "dip", "sp", "pt",
"in", "mm", "", "" };
private static final String FRACTION_UNITS[] = { "%", "%p", "", "", "", "",
"", "" };

public static void main(String[] args) {
String[] str = null;
try {
str = AnalysisApk
.unZip(
"C:\\Documents and Settings\\Administrator\\桌面\\air.com.oranginalplan.weaphones.1361250976472.apk",
"");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(str[0]);
System.out.println(str[1]);
System.out.println(str[2]);
}
}