flutter_aar

Description:

flutter aar

flutter_aar #
A gradle task that allows you use local .aar file directly.
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Getting Started #

First, copy this code to the end of pluginProject/android/build.gradle

String aarPath = localMavenPath
task useAar {
File file = project.file("libs")
if (file.exists() && file.isDirectory()) {
file.listFiles(new FileFilter() {
@Override
boolean accept(File pathname) {
return pathname.name.endsWith(".aar")
}
}).each { item ->
String aarName = item.name.substring(0, item.name.length() - 4)
String[] aarInfo = aarName.split("-")
String sha1 = getFileSha1(item)
String md5 = getFileMD5(item)
println("aar: " + aarInfo + " file sha1:" + sha1 + " md5:" + md5)
String fromStr = item.path
String intoStr = aarPath + "/" + aarInfo[0].replace(".", "/") + "/" + aarInfo[1] + "/" + aarInfo[2]
String newName = aarInfo[1] + "-" + aarInfo[2] + ".aar"

project.copy {
from fromStr
into intoStr
rename(item.name, newName)
}

project.file(intoStr + "/" + newName + ".md5").write(md5)
project.file(intoStr + "/" + newName + ".sha1").write(sha1)

String pomPath = intoStr + "/" + newName.substring(0, newName.length() - 4) + ".pom"
project.file(pomPath).write(createPomStr(aarInfo[0], aarInfo[1], aarInfo[2]))
project.file(pomPath + ".md5").write(getFileMD5(project.file(pomPath)))
project.file(pomPath + ".sha1").write(getFileSha1(project.file(pomPath)))

String metadataPath = project.file(intoStr).getParentFile().path + "/maven-metadata.xml"
project.file(metadataPath).write(createMetadataStr(aarInfo[0], aarInfo[1], aarInfo[2]))
project.file(metadataPath + ".md5").write(getFileMD5(project.file(metadataPath)))
project.file(metadataPath + ".sha1").write(getFileSha1(project.file(metadataPath)))
dependencies {
implementation "${aarInfo[0]}:${aarInfo[1]}:${aarInfo[2]}"
}
}
}
}

public static String createMetadataStr(String groupId, String artifactId, String version) {
return "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
"<metadata>\n" +
" <groupId>$groupId</groupId>\n" +
" <artifactId>$artifactId</artifactId>\n" +
" <versioning>\n" +
" <release>$version</release>\n" +
" <versions>\n" +
" <version>$version</version>\n" +
" </versions>\n" +
" <lastUpdated>${new Date().format('yyyyMMdd')}000000</lastUpdated>\n" +
" </versioning>\n" +
"</metadata>\n"
}

public static String createPomStr(String groupId, String artifactId, String version) {
return "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
"<project xsi:schemaLocation=\"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd\" xmlns=\"http://maven.apache.org/POM/4.0.0\"\n" +
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">\n" +
" <modelVersion>4.0.0</modelVersion>\n" +
" <groupId>$groupId</groupId>\n" +
" <artifactId>$artifactId</artifactId>\n" +
" <version>$version</version>\n" +
" <packaging>aar</packaging>\n" +
"</project>\n"
}

public static String getFileSha1(File file) {
FileInputStream input = null;
try {
input = new FileInputStream(file);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
byte[] buffer = new byte[1024 * 1024 * 10];

int len = 0;
while ((len = input.read(buffer)) > 0) {
digest.update(buffer, 0, len);
}
String sha1 = new BigInteger(1, digest.digest()).toString(16);
int length = 40 - sha1.length();
if (length > 0) {
for (int i = 0; i < length; i++) {
sha1 = "0" + sha1;
}
}
return sha1;
}
catch (IOException e) {
System.out.println(e);
}
catch (NoSuchAlgorithmException e) {
System.out.println(e);
}
finally {
try {
if (input != null) {
input.close();
}
}
catch (IOException e) {
System.out.println(e);
}
}
}

public static String getFileMD5(File file) {
FileInputStream input = null;
try {
input = new FileInputStream(file);
MessageDigest digest = MessageDigest.getInstance("MD5");
byte[] buffer = new byte[1024 * 1024 * 10];

int len = 0;
while ((len = input.read(buffer)) > 0) {
digest.update(buffer, 0, len);
}
String md5 = new BigInteger(1, digest.digest()).toString(16);
int length = 32 - md5.length();
if (length > 0) {
for (int i = 0; i < length; i++) {
md5 = "0" + md5;
}
}
return md5;
}
catch (IOException e) {
System.out.println(e);
}
catch (NoSuchAlgorithmException e) {
System.out.println(e);
}
finally {
try {
if (input != null) {
input.close();
}
}
catch (IOException e) {
System.out.println(e);
}
}
}
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Step2, change repositories, add a custom maven url :

String localMavenPath = project.mkdir("build").absolutePath
rootProject.allprojects {
repositories {
maven { url "file://$localMavenPath" }
}
}
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Now, copy .aar file to libs dir

the aar must name to groupId-artifactId-version.aar
eg:
com.siyehua.flataar-mylibrary2-1.0.2.aar
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Now you can use aar file in your custom plugin. #
more info build.gradle
Note #
don't add code in dependencies
implementation fileTree(include: ['*.jar'], dir: 'libs')
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or
implementation(name: 'com.siyehua.flataar-mylibrary2-1.0.2', ext: 'aar')

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