Java 怎么获取 Android APK 版本信息 有没有不使用第三方jar包的方式？
问答
Java 怎么获取 Android APK 版本信息 有没有不使用第三方jar包的方式？
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public static void getAndroidManifestInfo(byte[] bytes) {
try {
AXmlResourceParser parser = new AXmlResourceParser();
StringBuilder indent = new StringBuilder(10);
parser.open(Streams.wrap(bytes));
while (true) {
int type = parser.next();
if (type == 1) {
return;
}
switch (type) {
case 0:
log("<?xml version=\"1.0\" encoding=\"utf-8\"?>", new String[0]);
break;
case 2:
log("%s<%s%s", new Object[] { indent, getNamespacePrefix(parser.getPrefix()), parser.getName() });
indent.append("\t");
int namespaceCountBefore = parser.getNamespaceCount(parser.getDepth() - 1);
int namespaceCount = parser.getNamespaceCount(parser.getDepth());
for (int i = namespaceCountBefore; i != namespaceCount; ++i) {
log("%sxmlns:%s=\"%s\"", new Object[] { indent, parser.getNamespacePrefix(i), parser.getNamespaceUri(i) });
}
for (int i = 0; i != parser.getAttributeCount(); ++i) {
log("%s%s%s=\"%s\"", new Object[] { indent, getNamespacePrefix(parser.getAttributePrefix(i)), parser.getAttributeName(i), getAttributeValue(parser, i) });
}
log("%s>", new Object[] { indent });
break;
case 3:
indent.setLength(indent.length() - "\t".length());
log("%s</%s%s>", new Object[] { indent, getNamespacePrefix(parser.getPrefix()), parser.getName() });
break;
case 4:
case 1:
break;
}
}
} catch (Exception e) {
log.error(e);
}
}
private static String log(String format, Object[] arguments) {
String str = String.format(format, arguments);
NAME.get().append(str).append("\n");
return str;
}
private static String getNamespacePrefix(String prefix) {
if ((prefix == null) || (prefix.length() == 0)) {
return "";
}
return prefix + ":";
}
public static final StringBuffer getName() {
return NAME.get();
}
贴 UNZip 代码给你
package com.rekoe.decode;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.util.HashSet;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import org.nutz.lang.Files;
import org.nutz.lang.Lang;
import org.nutz.lang.Streams;
import org.nutz.lang.util.Callback2;
import org.nutz.lang.util.Disks;
import org.nutz.lang.util.FileVisitor;
import org.nutz.log.Log;
import org.nutz.log.Logs;
import android.content.res.AXmlResourceParser;
public abstract class UNZip {
private final static Log log = Logs.get();
private static final ThreadLocal<StringBuffer> NAME = new ThreadLocal<StringBuffer>();
private static final float[] RADIX_MULTS = { 0.0039063F, 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 getZipInfo(File file, final Callback2<byte[], File> callback, final String filter, String... suffixs) throws Exception {
NAME.set(new StringBuffer());
final Set<String> suffix = new HashSet<String>();
suffix.addAll(Lang.array2list(suffixs));
FileFilter ff = new FileFilter() {
public boolean accept(File pathname) {
if (pathname.isDirectory())
return true;
return suffix.contains(Files.getSuffixName(pathname));
}
};
FileVisitor fv = new FileVisitor() {
public void visit(File file) {
if (file.isDirectory())
return;
byte[] bytes = getInfoFile(file, filter);
if (bytes == null) {
log.errorf("Can not find file %s", filter);
return;
}
callback.invoke(bytes, file);
}
};
Disks.visitFile(file, fv, ff);
}
protected static byte[] getInfoFile(File apkFile, String filter) {
FileInputStream fis = null;
ByteArrayOutputStream fos = null;
ZipInputStream zis = null;
try {
fis = new FileInputStream(apkFile);
zis = new ZipInputStream(fis);
ZipEntry zipEntry = null;
while ((zipEntry = zis.getNextEntry()) != null) {
String name = zipEntry.getName();
if (log.isDebugEnabled()) {
log.debug(name);
}
if (Lang.equals(filter, name)) {
fos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int n = 0;
while ((n = zis.read(buffer, 0, buffer.length)) != -1) {
fos.write(buffer, 0, n);
}
break;
}
}
zis.closeEntry();
zipEntry = null;
return fos.toByteArray();
} catch (Exception e) {
log.error(e);
} finally {
Streams.safeClose(fos);
Streams.safeClose(zis);
Streams.safeClose(fis);
}
return null;
}
public static void getAndroidManifestInfo(byte[] bytes) {
try {
AXmlResourceParser parser = new AXmlResourceParser();
StringBuilder indent = new StringBuilder(10);
parser.open(Streams.wrap(bytes));
while (true) {
int type = parser.next();
if (type == 1) {
return;
}
switch (type) {
case 0:
log("<?xml version=\"1.0\" encoding=\"utf-8\"?>", new String[0]);
break;
case 2:
log("%s<%s%s", new Object[] { indent, getNamespacePrefix(parser.getPrefix()), parser.getName() });
indent.append("\t");
int namespaceCountBefore = parser.getNamespaceCount(parser.getDepth() - 1);
int namespaceCount = parser.getNamespaceCount(parser.getDepth());
for (int i = namespaceCountBefore; i != namespaceCount; ++i) {
log("%sxmlns:%s=\"%s\"", new Object[] { indent, parser.getNamespacePrefix(i), parser.getNamespaceUri(i) });
}
for (int i = 0; i != parser.getAttributeCount(); ++i) {
log("%s%s%s=\"%s\"", new Object[] { indent, getNamespacePrefix(parser.getAttributePrefix(i)), parser.getAttributeName(i), getAttributeValue(parser, i) });
}
log("%s>", new Object[] { indent });
break;
case 3:
indent.setLength(indent.length() - "\t".length());
log("%s</%s%s>", new Object[] { indent, getNamespacePrefix(parser.getPrefix()), parser.getName() });
break;
case 4:
case 1:
break;
}
}
} catch (Exception e) {
log.error(e);
}
}
private static String log(String format, Object[] arguments) {
String str = String.format(format, arguments);
NAME.get().append(str).append("\n");
return str;
}
private static String getNamespacePrefix(String prefix) {
if ((prefix == null) || (prefix.length() == 0)) {
return "";
}
return prefix + ":";
}
public static final StringBuffer getName() {
return NAME.get();
}
private static String getAttributeValue(AXmlResourceParser parser, int index) {
int type = parser.getAttributeValueType(index);
int data = parser.getAttributeValueData(index);
if (type == 3) {
return parser.getAttributeValue(index);
}
if (type == 2) {
return String.format("?%s%08X", new Object[] { getPackage(data), Integer.valueOf(data) });
}
if (type == 1) {
return String.format("@%s%08X", new Object[] { getPackage(data), Integer.valueOf(data) });
}
if (type == 4) {
return String.valueOf(Float.intBitsToFloat(data));
}
if (type == 17) {
return String.format("0x%08X", new Object[] { Integer.valueOf(data) });
}
if (type == 18) {
return ((data != 0) ? "true" : "false");
}
if (type == 5) {
return Float.toString(complexToFloat(data)) + DIMENSION_UNITS[(data & 0xF)];
}
if (type == 6) {
return Float.toString(complexToFloat(data)) + FRACTION_UNITS[(data & 0xF)];
}
if ((type >= 28) && (type <= 31)) {
return String.format("#%08X", new Object[] { Integer.valueOf(data) });
}
if ((type >= 16) && (type <= 31)) {
return String.valueOf(data);
}
return String.format("<0x%X, type 0x%02X>", new Object[] { Integer.valueOf(data), Integer.valueOf(type) });
}
private static float complexToFloat(int complex) {
return ((complex & 0xFFFFFF00) * RADIX_MULTS[(complex >> 4 & 0x3)]);
}
private static String getPackage(int id) {
if (id >>> 24 == 1) {
return "android:";
}
return "";
}
}
UNZip.getZipInfo(new File(“apk path”), new Callback2<byte[], File>() {
@Override
public void invoke(byte[] bytes, File file) {
UNZip.getAndroidManifestInfo(bytes);
StringBuffer sb = UNZip.getName();
try {
SAXReader reader = new SAXReader();
org.dom4j.Document document = reader.read(Streams.wrap(sb.toString().getBytes("utf-8")));
org.dom4j.Element root = document.getRootElement();
//包信息
root.attribute("package").getText()；
} catch (Exception e) {
log.error(e);
}
}
}, "AndroidManifest.xml", "apk");
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