\u968f\u7740\u79fb\u52a8\u4e92\u8054\u7f51\u7684\u53d1\u5c55\uff0c\u8d8a\u6765\u8d8a\u591a\u7684\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u5728\u591a\u4e2a\u6e20\u9053\u53d1\u5e03\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u63a8\u5e7f\u548c\u83b7\u53d6\u7528\u6237\u3002\u800c\u9488\u5bf9A\u5982\u4f55\u7ed9\u4e00\u4e2a\u9879\u76ee\u6253\u5305\u6210apk<\/a>ndroid\u5e94\u7528\u7a0b\u5e8f\u800c\u8a00\uff0c\u591a\u6e20\u9053\u6253\u5305\u5c31\u662f\u4e00\u79cd\u975e\u5e38\u91cd\u8981\u7684\u6280\u672f\u624b\u6bb5\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u548c\u8be6\u7ec6\u4ecb\u7ecd\u4e24\u4e2a\u65b9\u9762\uff0c\u5bf9Android\u591a\u6e20\u9053\u6253\u5305\u8fdb\u884c\u89e3\u6790\u548c\u8bf4\u660e\u3002<\/p>\n
\u4e00\u3001\u539f\u7406<\/p>\n
\u4e8c\u3001\u8be6\u7ec6\u4ecb\u7ecd<\/p>\n
1\u3001\u6dfb\u52a0Gradle\u63d2\u4ef6<\/p>\n
classpath ‘com.android.tools.build:gradle:3.1.3’<\/p>\n
classpath ‘com.google.gradle:android-gradle-plugin:0.14.0’<\/p>\n
2\u3001\u914d\u7f6e\u6e20\u9053\u4fe1\u606f<\/p>\n
CHANNELS=baidu,360,appchina<\/p>\n
3\u3001\u4fee\u6539APK\u7b7e\u540d\u4fe1\u606f<\/p>\n
android.applicationVariants.all { variant -><\/p>\n
outputFileName = “${variant.name}-${defaultConfig.versionName}.apk”<\/p>\n
def outputFile = output.outputFile<\/p>\n
if (outputFile != null && outputFile.name.endsWith(‘.apk’)) {<\/p>\n
= “channel_” + variant.productFlavors[0].name<\/p>\n
zip(outputFile, channel)<\/p>\n
}<\/p>\n
}<\/p>\n
}<\/p>\n
def zip(File outputFile, String channel) {<\/p>\n
def zipFile = new ZipFile(outputFile)<\/p>\n
def tmpFile = new File(outputFile.parent, “tmp-${outputFile.name}”)<\/p>\n
def zipOutput = new ZipOutputStream(new FileOutputStream(tmpFile))<\/p>\n
zipFile.entries().each { entry -><\/p>\n
def input = zipFile.getInputStream(entry)<\/p>\n
def outputEntry = new ZipEntry(entry.name)<\/p>\n
outputEntry.time = entry.time<\/p>\n
outputEntry.size = entry.size<\/p>\n
outputEntry.crc = entry.crc<\/p>\n
zipOutput.putNextEntry(outputEntry)<\/p>\n
if (entry.name == “META-INF\/CERT.RSA”) {<\/p>\n
def certBytes = readFully(input)<\/p>\n
def newCertBytes = modifyCert(certBytes, channel)<\/p>\n
zipOutput.write(newCertBytes)<\/p>\n
} else {<\/p>\n
copyStream(input, zipOutput)<\/p>\n
}<\/p>\n
zipOutput.closeEntry()<\/p>\n
}<\/p>\n
zipOutput.close()<\/p>\n
zipFile.close()<\/p>\n
outputFile.delete()<\/p>\n
tmpFile.renameTo(outputFile)<\/p>\n
}<\/p>\n
def readFully(InputStream input) {<\/p>\n
ByteArrayOutputStream output = new ByteArrayOutputStream()<\/p>\n
byte[] buffer = new byte[1024]<\/p>\n
int length<\/p>\n
while ((length = input.read(buffer)) != -1) {<\/p>\n
output.write(buffer, 0, length)<\/p>\n
}<\/p>\n
output.toByteArray()<\/p>\n
}<\/p>\n
def modifyCert(byte[] certBytes, String channel) {<\/p>\n
def cert = CertificateFactory.getInstance(“X.509”).generateCertificate(new ByteArra\u82f9\u679c\u63cf\u8ff0\u6587\u4ef6\u5206\u53d1<\/a>yInputStream(certBytes))<\/p>\n
def tbsCert = cert.tbsCertificate<\/p>\n
def subject = tbsCert.subject<\/p>\n
def newSubject = new X500Principal(subject.getName() + “, channel=” + channel)<\/p>\n
def newTbsCert = new TBSCertificate(<\/p>\n
new X500Name(newSubject.getEncoded()),<\/p>\n
tbsCert.subjectPublicKeyInfo,<\/p>\n
def newCertInfo = new CertificateInfo(<\/p>\n
def newCert = new JcaCertStore(Collections.singleton(newCertInfo))<\/p>\n
newCert.toASN1Structure().getEncoded()<\/p>\n
def copyStream(InputStream input, OutputStream output) {<\/p>\n
byte[] buffer = new byte[1024]<\/p>\n
while ((length = input.read(buffer)) != -1) {<\/p>\n
output.write(buffer, 0, length)<\/p>\n
4\u3001\u6253\u5305\u5e76\u751f\u6210\u591a\u4e2a\u6e20\u9053\u7684APK\u6587\u4ef6<\/p>\n