该ApkUtil的主要功能是通过解析AndroidManifest.xml,获取apk的版本号(即versionCode)和名字(versionName)。
import android.util.TypedValue;
import brut.androlib.res.decoder.AXmlResourceParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xmlpull.v1.XmlPullParser;
import java.io.IOException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class ApkUtil {
private static final Logger LOGGER = LoggerFactory.getLogger(ApkUtil.class);
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", "", "", "", "", "", ""};
/**
* 获取apk信息
*
* @param apkPath
* @return
*/
public static String[] getApkInfo(String apkPath) throws Exception {
// apk信息的返回结果
final String[] apkResult = new String[3];
ZipFile zipFile = null;
try {
// 获得一个解压文件对象
zipFile = new ZipFile(apkPath);
// 将解压文件对象转列举对象
final Enumeration enumeration = zipFile.entries();
ZipEntry zipEntry = null;
// 遍历列举对象元素
while (enumeration.hasMoreElements()) {
// 获得一个解压条目对象
zipEntry = (ZipEntry) enumeration.nextElement();
if (zipEntry.isDirectory()) {
} else {
// 获得名为AndroidManifest.xml的文件
if ("AndroidManifest.xml".equalsIgnoreCase(zipEntry.getName())) {
final AXmlResourceParser parser = new AXmlResourceParser();
parser.open(zipFile.getInputStream(zipEntry));
// 遍历文件里的内容
while (true) {
final int type = parser.next();
if (type == XmlPullParser.END_DOCUMENT) {
break;
}
switch (type) {
// 满足条件开始遍历内容提取需要的信息
case XmlPullParser.START_TAG: {
for (int i = 0; i != parser.getAttributeCount(); ++i) {
if ("package".equals(parser.getAttributeName(i))) {
apkResult[0] = ApkUtil.getAttributeValue(parser, i);
} else if ("versionCode".equals(parser.getAttributeName(i))) {
apkResult[1] = ApkUtil.getAttributeValue(parser, i);
} else if ("versionName".equals(parser.getAttributeName(i))) {
apkResult[2] = ApkUtil.getAttributeValue(parser, i);
}
}
}
}
}
}
}
}
} finally {
if (zipFile != null) {
try {
zipFile.close();
} catch (final IOException e) {
LOGGER.error("Zipfile close fail.", e);
}
}
}
return apkResult;
}
private static String getAttributeValue(AXmlResourceParser parser, int index) {
final int type = parser.getAttributeValueType(index);
final int data = parser.getAttributeValueData(index);
if (type == TypedValue.TYPE_STRING) {
return parser.getAttributeValue(index);
}
if (type == TypedValue.TYPE_ATTRIBUTE) {
return String.format("?%s%08X", ApkUtil.getPackage(data), data);
}
if (type == TypedValue.TYPE_REFERENCE) {
return String.format("@%s%08X", ApkUtil.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(ApkUtil.complexToFloat(data))
+ ApkUtil.DIMENSION_UNITS[data & TypedValue.COMPLEX_UNIT_MASK];
}
if (type == TypedValue.TYPE_FRACTION) {
return Float.toString(ApkUtil.complexToFloat(data))
+ ApkUtil.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 "";
}
public static float complexToFloat(int complex) {
return (complex & 0xFFFFFF00) * ApkUtil.RADIX_MULTS[complex >> 4 & 3];
}
}