AOP practices on Android

AspectJ manipulates bytecodes at compile time, so it needs its separate compiler, AJC. In Android Studio, the AJC compiler can be enabled through Gradle scripts. To facilitate AOP development, I have created a small plug-in (very simple) that will be introduced into any library or Application where AOP is needed.

Dependencies buildscript {repositories {jcenter ()} {the classpath 'cn. Droidlover: AspectJAs: 1.0.2'}}Copy the code

Use the plug-in in the corresponding module:

apply plugin: 'cn.droidlover.aspectjas'Copy the code

• Plugin_name. Properties = resources/ meta-INF /gradle-plugins = resources/ meta-inf /gradle-plugins = resources/ meta-inf /gradle-plugins = resources/ meta-inf /gradle-plugins = resources/ meta-inf /gradle-plugins = resources/ meta-inf /gradle-plugins = resources/ meta-inf /gradle-plugins = resources/ meta-inf /gradle-plugins As the plug-in name for cn. Droidlover. Aspectjas, then the file name should be: cn. Droidlover. Aspectjas. Properties * file contents as follows:

implementation-class=Plug-in entry PATHCopy the code

If the above plug-in is:Copy the code

implementation-class=cn.droidlover.aspectjas.AspectJAsCopy the code

A Plugin entry is a class that implements Plugin<Project>, and there is only one entry per plug-in.Copy the code

• You can upload your own plugins to your local Maven repository

apply plugin: 'groovy'
apply plugin: "maven"

dependencies {
    compile gradleApi()
    compile localGroovy()
    compile 'Com. Android. Tools. Build: gradle: 2.1.0'
}

repositories {
    jcenter()
}

//Upload to the local code base
uploadArchives{
    repositories{
        mavenDeployer{
            repository(url:uri('../repo'))
            pom.groupId = 'cn.droidlover' //Group name
            pom.artifactId = 'AspectJAs' //The plugin name
            pom.version = '1.0.2' //The version number}}}Copy the code

To use maven, add the maven address:

maven{
     url uri('/repo')}Copy the code

Run a screenshot

Usage:

@Trace("chat")
public void onChat(View view) {
    try {
        Thread.sleep(20);
    } catch (InterruptedException e) {
           e.printStackTrace(); }}@Trace("sum")
private int sum(int a, int b) {
    return a + b;
}Copy the code

You can use this to extend, for example, statistics on user behavior.