利用异常机制获取堆栈轨迹元素

Throwable throwable = new Throwable();
StringWriter out = new StringWriter();
throwable.printStackTrace(new PrintWriter(out));
String desc = out.toString();

Throwable throwable = new Throwable();
StackTraceElement[] elements = throwable.getStackTrace();
for(StackTraceElement element:elements){
    ....
}

public final class StackTraceElement implements Serializable {
    public StackTraceElement(String declaringClass, String methodName, String fileName, int lineNumber) {
        throw new RuntimeException("Stub!");
    }
    // 获得文件名
    public String getFileName() {
        throw new RuntimeException("Stub!");
    }
    // 获得行号
    public int getLineNumber() {
        throw new RuntimeException("Stub!");
    }
    // 获得所在类的类名
    public String getClassName() {
        throw new RuntimeException("Stub!");
    }
    // 获得所在方法的方法名
    public String getMethodName() {
        throw new RuntimeException("Stub!");
    }
    // // 获得所在方法是否是 native 方法
    public boolean isNativeMethod() {
        throw new RuntimeException("Stub!");
    }
    ...
}

Map<Tread,StackTraceElement> map = Thread.getAllStackTrace();
for(Thread thread:map.keySet()){
    StrackTraceElement[] elements = map.get(thread);
    ...
}

object LogUtil {
    private val isDebug = BuildConfig.DEBUG

    private fun generateTag(): String {
        val caller = Throwable().stackTrace[2]
        var tag = "%s.%s(L:%d)"
        var callerClazzName = caller.className
        callerClazzName = callerClazzName.substring(callerClazzName.lastIndexOf(".") + 1)
        tag = String.format(
            Locale.CHINA, tag, callerClazzName, caller.methodName,
            caller.lineNumber
        )
        val customTagPrefix = "h_log"
        tag = if (TextUtils.isEmpty(customTagPrefix)) tag else "$customTagPrefix:$tag"
        return tag
    }

    fun d(content: Any?) {
        if (!isDebug || content == null) {
            return
        }
        val tag = generateTag()
        Log.d(tag, content.toString())
    }
    ...
}