AopDemo

IOC ,Aop ,aop的AST清除log

原理图

Aop ： 主要使用到了AspectJ，编译时代码注入

使用流程：

1> 配置build.gradle , http://fernandocejas.com/2014/08/03/aspect-oriented-programming-in-android/

module:

mavenCentral()


classpath 'org.aspectj:aspectjtools:1.8.9'
classpath 'org.aspectj:aspectjweaver:1.8.9'

app：

import org.aspectj.bridge.IMessage
import org.aspectj.bridge.MessageHandler
import org.aspectj.tools.ajc.Main


final def log = project.logger
final def variants = project.android.applicationVariants

variants.all { variant ->
    if (!variant.buildType.isDebuggable()) {
        log.debug("Skipping non-debuggable build type '${variant.buildType.name}'.")
        return;
    }

    JavaCompile javaCompile = variant.javaCompile
    javaCompile.doLast {
        String[] args = ["-showWeaveInfo",
                         "-1.8",
                         "-inpath", javaCompile.destinationDir.toString(),
                         "-aspectpath", javaCompile.classpath.asPath,
                         "-d", javaCompile.destinationDir.toString(),
                         "-classpath", javaCompile.classpath.asPath,
                         "-bootclasspath", project.android.bootClasspath.join(
                File.pathSeparator)]

        log.debug "ajc args: " + Arrays.toString(args)

        MessageHandler handler = new MessageHandler(true);
        new Main().run(args, handler);

        for (IMessage message : handler.getMessages(null, true)) {
            switch (message.getKind()) {
                case IMessage.ABORT:
                case IMessage.ERROR:
                case IMessage.FAIL:
                    log.error message.message, message.thrown
                    break;
                case IMessage.WARNING:
                    log.warn message.message, message.thrown
                    break;
                case IMessage.INFO:
                    log.info message.message, message.thrown
                    break;
                case IMessage.DEBUG:
                    log.debug message.message, message.thrown
                    break;
            }
        }
    }
}

2> 或者使用自定义的 aspectjlibrary（只需要依赖使用它就可以了）

3> 使用配置ioc

CheckNet：

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface CheckNet {
}

NetAspect：

@Aspect
public class NetAspect {
    /**
     * 根据切点 切成什么样子
     * * *(..)  可以处理所有的方法
     */
    @Pointcut("execution(@com.example.aopdemo.aspectj.annotation.CheckNet * *(..))")
    public void checkNetBehavior() {

    }

    /**
     * 切成什么样子之后，怎么去处理
     */
    @Around("checkNetBehavior()")
    public Object checkNet(ProceedingJoinPoint joinPoint) throws Throwable {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        if (signature != null) {
            CheckNet checkNet = signature.getMethod().getAnnotation(CheckNet.class);
            if (checkNet != null) {
                Object obj = joinPoint.getThis();
                Context context = NetWorkUtils.getContext(obj);
                if (context != null) {
                    if (!NetWorkUtils.isNetWorkAvailable(context)) {
                        Toast.makeText(context, "请检测网络", Toast.LENGTH_LONG).show();
                        return null;
                    }
                }
            }
        }
        return joinPoint.proceed();
    }
}

MainActivity:

@CheckNet
public void click(View view) {
    //正常的业务逻辑
    Toast.makeText(this, "网络已连接", Toast.LENGTH_LONG).show();
}

AST清除LOG

clearloglibrary：利用AST扫描语句块，清除LOG信息

自动捕获异常

https://github.com/yanchunlan/AutoTryCatchDemo