APP使用的一些工具和知识

1.查看android的versionCode

一般从androidmanifest.xml 里面读取，使用工具AXMLPrinter.jar 和 AXMLPrinter2.jar 网上两种，maven仓库作者是同一个人

AXMLPrinter2.jar apk分析APK文件，取得APK文件中的 包名、版本号及图标，很强大的工具，再一次感受到了批处理的牛逼。可以将android安卓编译过的二进制XML文件(binary xml file)反编译明文输出保存。是APK反编译修改的必备工具之一。例如需要查看apk安装包的权限、名称等，可以用AXMLPrinter2对androidmanifest.xml反编译进行明文查看。反编译速度非常快、好用，可以顺利编译出.XML文件。
CMD执行命令：java -jar AXMLPrinter.jar AndroidManifest.xml 

java代码：

@Slf4j
public class ApkUtil {
    private static final String DIMENSION_UNITS[] = { "px", "dip", "sp", "pt", "in", "mm", "", "" };
    private static final String FRACTION_UNITS[]  = { "%", "%p", "", "", "", "", "", "" };
    private static final float  RADIX_MULTS[]     = { 0.00390625F, 3.051758E-005F, 1.192093E-007F, 4.656613E-010F };
    
    /********
     * 使用axmlprinter2-1.21.jar解析
     *******/
    public static Map<String, Object> readAPK(File apkFile) {
        ZipFile zipFile = null;
        Map<String, Object> map = new HashMap<String, Object>();
        try {
            zipFile = new ZipFile(apkFile);
            Enumeration<?> enumeration = zipFile.entries();

            ZipEntry zipEntry = null;
            while (enumeration.hasMoreElements()) {
                zipEntry = (ZipEntry) enumeration.nextElement();
                if (zipEntry.isDirectory()) {

                } else {
                    if ("androidmanifest.xml".equals(zipEntry.getName().toLowerCase())) {
                        AXmlResourceParser parser = new AXmlResourceParser();
                        parser.open(zipFile.getInputStream(zipEntry));

                        while (true) {
                            int type = parser.next();
                            if (type == XmlPullParser.END_DOCUMENT) {
                                break;
                            }
                            String name = parser.getName();
                            if (null != name && name.toLowerCase().equals("manifest")) {
                                for (int i = 0; i != parser.getAttributeCount(); i++) {
                                    if ("versionName".equals(parser.getAttributeName(i))) {
                                        String versionName = getAttributeValue(parser, i);
                                        if (null == versionName) {
                                            versionName = "";
                                        }
                                        map.put("versionName", versionName);
                                    } else if ("package".equals(parser.getAttributeName(i))) {
                                        String packageName = getAttributeValue(parser, i);
                                        if (null == packageName) {
                                            packageName = "";
                                        }
                                        map.put("package", packageName);
                                    } else if ("versionCode".equals(parser.getAttributeName(i))) {
                                        String versionCode = getAttributeValue(parser, i);
                                        if (null == versionCode) {
                                            versionCode = "";
                                        }
                                        map.put("versionCode", versionCode);
                                    }
                                }
                                break;
                            }
                        }
                    }

                }
            }
            zipFile.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            try {
                zipFile.close();
            } catch (IOException e) {
                log.error("error", e);
            }
        }
        return map;
    }

    public static String readAPK(File apkFile, String attributeName) {
        ZipFile zipFile = null;
        try {
            zipFile = new ZipFile(apkFile);
            Enumeration<?> enumeration = zipFile.entries();

            ZipEntry zipEntry = null;
            while (enumeration.hasMoreElements()) {
                zipEntry = (ZipEntry) enumeration.nextElement();
                if (zipEntry.isDirectory()) {

                } else {
                    if ("androidmanifest.xml".equals(zipEntry.getName().toLowerCase())) {
                        AXmlResourceParser parser = new AXmlResourceParser();
                        parser.open(zipFile.getInputStream(zipEntry));

                        while (true) {
                            int type = parser.next();
                            if (type == XmlPullParser.END_DOCUMENT) {
                                break;
                            }
                            String name = parser.getName();
                            if (null != name && name.toLowerCase().equals("manifest")) {
                                for (int i = 0; i != parser.getAttributeCount(); i++) {
                                    if (attributeName.equals(parser.getAttributeName(i))) {
                                        String value = getAttributeValue(parser, i);
                                        return value;
                                    }
                                }
                                break;
                            }
                        }
                    }

                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                zipFile.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    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 :)
    private static float complexToFloat(int complex) {
        return (float) (complex & 0xFFFFFF00) * RADIX_MULTS[(complex >> 4) & 3];
    }





    public static void main(String args[]) {
        String path = "D:\\公司\\z直营\\魔豆\\发布压缩包\\com.example.myapplicationentry.apk";
        System.out.println(readAPK(new File(path)));
    }
}