纯java读取apk文件信息（包括版本号,包名等）

package com.read.apk; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; 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; /** * 分析APK文件，取得APK文件中的 包名、版本号及图标 */ 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 IOException */ public static String[] unZip(String apkUrl, String logoUrl) { // [0]:版本号;[1]包名 String[] st = new String[2]; 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 ("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) { } 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", "", "", "", "", "", "" }; }