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Android埋點(diǎn)方案的簡(jiǎn)單實(shí)現(xiàn)-AOP之AspectJ

AOP的定義

AOP為Aspect Oriented Programming的縮寫，意為:面向切面編程，通過預(yù)編譯方式和運(yùn)行期間動(dòng)態(tài)代理實(shí)現(xiàn)程序功能的統(tǒng)一維護(hù)的一種技術(shù)。

以上關(guān)于AOP的定義引用自百度百科。

AOP的運(yùn)用場(chǎng)景

日志記錄、性能統(tǒng)計(jì)、權(quán)限控制、埋點(diǎn)等

AOP的具體實(shí)現(xiàn)方案有很多，這里選用AspectJ來(lái)簡(jiǎn)單實(shí)現(xiàn)

監(jiān)聽View的點(diǎn)擊、頁(yè)面打開、關(guān)閉

為方法添加開始、結(jié)束的日志

統(tǒng)計(jì)方法運(yùn)行時(shí)間

AspectJ的使用

AspectJ的引入

這里引用AspectJX，AspectJX是基于AspectJ的一個(gè)AOP框架

新建Android工程，在項(xiàng)目根目錄下的build.gradle文件中添加依賴

dependencies {
        //...
        classpath 'com.hujiang.aspectjx:gradle-android-plugin-aspectjx:2.0.8'
        //...
    }

新建Module，類型選擇Android Library，在新建的library的build.gradle文件中，添加相應(yīng)的依賴

apply plugin: 'android-aspectjx'

在app的build.gradle文件中增加對(duì)剛才新建的library的引用及AspectJ的依賴

apply plugin: 'android-aspectjx'

dependencies {
    //...
    implementation project(':library')
}

監(jiān)聽View的點(diǎn)擊、頁(yè)面打開、關(guān)閉

在library中新建回調(diào)接口TrackCallBack

public interface TrackCallBack {

    /**
     * 當(dāng)View被點(diǎn)擊
     *
     * @param pageName
     * @param viewIdName
     */
    void onClick(String pageName, String viewIdName);

    /**
     * 當(dāng)頁(yè)面打開時(shí)
     *
     * @param pageName
     */
    void onPageOpen(String pageName);

    /**
     * 當(dāng)頁(yè)面關(guān)閉時(shí)
     *
     * @param pageName
     */
    void onPageClose(String pageName);

}

在library中新建切入點(diǎn)TrackPoint

public class TrackPoint {

    private static TrackCallBack mTrackCallBack;

    private TrackPoint() {

    }

    /**
     * 初始化
     * @param trackCallBack
     */
    public static void init(TrackCallBack trackCallBack) {
        mTrackCallBack = trackCallBack;
    }

    static void onClick(String pageName, String viewIdName) {
        if (mTrackCallBack == null) {
            return;
        }
        mTrackCallBack.onClick(pageName, viewIdName);
    }

    static void onPageOpen(String pageName) {
        if (mTrackCallBack == null) {
            return;
        }
        mTrackCallBack.onPageOpen(pageName);
    }

    static void onPageClose(String pageName) {
        if (mTrackCallBack == null) {
            return;
        }
        mTrackCallBack.onPageClose(pageName);
    }

}

在library中新建切面TraceAspect

@Aspect
public class TraceAspect {

    private static final String TAG = TraceAspect.class.getSimpleName();

    @Pointcut("execution(* onClick(..))")
    public void onClickPointcut() {

    }

    @Pointcut("execution(* android.app.Activity+.onCreate(..))")
    public void activityOnCreatePointcut() {

    }

    @Pointcut("execution(* android.app.Activity+.onDestroy(..))")
    public void activityDestroyPointcut() {

    }

    @Around("onClickPointcut()")
    public void onClick(ProceedingJoinPoint joinPoint) throws Throwable {
        Object target = joinPoint.getTarget();
        String className = "";
        if (target != null) {
            className = target.getClass().getName();
        }
        Object[] args = joinPoint.getArgs();
        if (args.length > 0 && args[0] instanceof View) {
            View view = (View) args[0];
            String entryName = view.getResources().getResourceEntryName(view.getId());
            TrackPoint.onClick(className, entryName);
        }
        joinPoint.proceed();
    }

    @Around("activityOnCreatePointcut()")
    public void pageOpen(ProceedingJoinPoint joinPoint) throws Throwable {
        Object target = joinPoint.getTarget();
        String className = target.getClass().getName();
        TrackPoint.onPageOpen(className);
        joinPoint.proceed();
    }

    @Around("activityDestroyPointcut()")
    public void pageClose(ProceedingJoinPoint joinPoint) throws Throwable {
        Object target = joinPoint.getTarget();
        String className = target.getClass().getName();
        TrackPoint.onPageClose(className);
        joinPoint.proceed();
    }

}

在app模塊新建Application，在onCreate中執(zhí)行初始化:

public class App extends Application {

    private static final String TAG = TraceAspect.class.getSimpleName();

    @Override
    public void onCreate() {
        super.onCreate();
        TrackPoint.init(new TrackCallBack() {
            @Override
            public void onClick(String pageName, String viewIdName) {
                Log.d(TAG, "onClick:" + pageName + "-" + viewIdName);
                //執(zhí)行相應(yīng)的業(yè)務(wù)
            }

            @Override
            public void onPageOpen(String pageName) {
                Log.d(TAG, "onPageOpen:" + pageName);
                //執(zhí)行相應(yīng)的業(yè)務(wù)
            }

            @Override
            public void onPageClose(String pageName) {
                Log.d(TAG, "onPageClose:" + pageName);
                //執(zhí)行相應(yīng)的業(yè)務(wù)
            }
        });
    }
}

新增的Application需要在AndroidManifest中引用才會(huì)生效。

運(yùn)行App后，點(diǎn)擊打開另一個(gè)Activity，然后依次退出Activity，輸出日志如下:

2020-01-13 16:50:17.373 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: onPageOpen:com.wangyz.aspectjdemo.MainActivity
2020-01-13 16:50:19.243 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: onClick:com.wangyz.aspectjdemo.MainActivity-btn_open
2020-01-13 16:50:19.298 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: onPageOpen:com.wangyz.aspectjdemo.SecondActivity
2020-01-13 16:50:21.392 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: onPageClose:com.wangyz.aspectjdemo.SecondActivity
2020-01-13 16:50:22.320 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: onPageClose:com.wangyz.aspectjdemo.MainActivity

為方法添加開始、結(jié)束的日志

在library中增加注解AddLog

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

在TraceAspect增加以下代碼

@Pointcut("execution(@com.wangyz.library.AddLog * *(..))")
    public void addLogPointcut() {

    }

@Around("addLogPointcut()")
    public void addLog(ProceedingJoinPoint joinPoint) throws Throwable {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AddLog addLog = signature.getMethod().getAnnotation(AddLog.class);
        if (addLog != null) {
            Object target = joinPoint.getTarget();
            String className = "";
            if (target != null) {
                className = target.getClass().getName();
            }
            Log.d(TAG, "start execute:" + className + "-" + signature.getMethod().getName());
            joinPoint.proceed();
            Log.d(TAG, "end execute:" + className + "-" + signature.getMethod().getName());
        } else {
            joinPoint.proceed();
        }
    }

在MainActivity的onCreate上增加AddLog注解

@AddLog
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //...
    }

運(yùn)行App后，輸入日志如下:

2020-01-13 16:50:17.373 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: start execute:com.wangyz.aspectjdemo.MainActivity-onCreate
2020-01-13 16:50:17.392 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: end execute:com.wangyz.aspectjdemo.MainActivity-onCreate

統(tǒng)計(jì)方法運(yùn)行時(shí)間

在library中增加注解ExecTime

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

在TraceAspect增加以下代碼

@Pointcut("execution(@com.wangyz.library.ExecTime * *(..))")
    public void execTimePointcut() {

    }

@Around("execTimePointcut()")
    public void execTime(ProceedingJoinPoint joinPoint) throws Throwable {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        ExecTime execTime = signature.getMethod().getAnnotation(ExecTime.class);
        if (execTime != null) {
            long start = System.currentTimeMillis();
            joinPoint.proceed();
            long end = System.currentTimeMillis();
            Object target = joinPoint.getTarget();
            String className = "";
            if (target != null) {
                className = target.getClass().getName();
            }
            Log.d(TAG,
                    "execute time:" + className + "-" + signature.getMethod().getName() + " : " + (end - start) + "ms");
        } else {
            joinPoint.proceed();
        }
    }

在onClick方法上增加ExecTime注解

@ExecTime
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn_open:
                Intent intent = new Intent(this, SecondActivity.class);
                startActivity(intent);
                break;
            default:
                break;
        }
    }

運(yùn)行App后，輸出日志如下:

2020-01-13 16:50:19.272 16610-16610/com.wangyz.aspectjdemo D/TraceAspect: execute time:com.wangyz.aspectjdemo.MainActivity-onClick : 28ms

源碼地址:https://github.com/milovetingting/Samples/tree/master/AspectJDemo

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