擷取目前線程狀态--Thread類

String msgToPrint = Thread.currentThread().getStackTrace()[3] .getMethodName();

就是調用時的方法名。

其中使用的Thread類的第一個方法：

public static Thread currentThread()

傳回目前線程對象。

執行個體代碼:

package com.loaderman.getthreadstatusdemo;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        printStackInfos();
    }
    private void printStackInfos() {
        StackTraceElement[] stackTraceElements = Thread.currentThread().getStackTrace();

        System.out.println("Called in printStackInfos() method!!!!!!!");
        System.out.println("The stackTraceElements length: " + stackTraceElements.length);
        
        for (int i = 0; i < stackTraceElements.length; ++i) {
            System.out.println("----  the " + i + " element  ----");
            System.out.println("toString: " + stackTraceElements[i].toString());
            System.out.println("ClassName: " + stackTraceElements[i].getClassName());
            System.out.println("FileName: " + stackTraceElements[i].getFileName());
            System.out.println("LineNumber: " + stackTraceElements[i].getLineNumber());
            System.out.println("MethodName: " + stackTraceElements[i].getMethodName());
        }
    }
}

日志輸出

03-17 04:48:10.088 701-701/com.loaderman.getthreadstatusdemo I/System.out: Called in printStackInfos() method!!!!!!!

03-17 04:48:10.098 701-701/com.loaderman.getthreadstatusdemo I/System.out: The stackTraceElements length: 18

03-17 04:48:10.108 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 0 element ----

03-17 04:48:10.108 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: dalvik.system.VMStack.getThreadStackTrace(Native Method)

03-17 04:48:10.108 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: dalvik.system.VMStack

03-17 04:48:10.108 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: VMStack.java

03-17 04:48:10.118 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: -2

03-17 04:48:10.118 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: getThreadStackTrace

03-17 04:48:10.118 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 1 element ----

03-17 04:48:10.138 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: java.lang.Thread.getStackTrace(Thread.java:591)

03-17 04:48:10.138 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: java.lang.Thread

03-17 04:48:10.148 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: Thread.java

03-17 04:48:10.148 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 591

03-17 04:48:10.148 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: getStackTrace

03-17 04:48:10.148 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 2 element ----

03-17 04:48:10.148 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: com.loaderman.getthreadstatusdemo.MainActivity.printStackInfos(MainActivity.java:16)

03-17 04:48:10.148 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: com.loaderman.getthreadstatusdemo.MainActivity

03-17 04:48:10.158 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: MainActivity.java

03-17 04:48:10.158 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 16

03-17 04:48:10.168 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: printStackInfos

03-17 04:48:10.168 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 3 element ----

03-17 04:48:10.168 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: com.loaderman.getthreadstatusdemo.MainActivity.onCreate(MainActivity.java:12)

03-17 04:48:10.168 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: com.loaderman.getthreadstatusdemo.MainActivity

03-17 04:48:10.168 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: MainActivity.java

03-17 04:48:10.168 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 12

03-17 04:48:10.179 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: onCreate

03-17 04:48:10.179 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 4 element ----

03-17 04:48:10.179 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.app.Activity.performCreate(Activity.java:5008)

03-17 04:48:10.188 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.app.Activity

03-17 04:48:10.188 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: Activity.java

03-17 04:48:10.198 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 5008

03-17 04:48:10.198 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: performCreate

03-17 04:48:10.198 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 5 element ----

03-17 04:48:10.208 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)

03-17 04:48:10.208 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.app.Instrumentation

03-17 04:48:10.208 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: Instrumentation.java

03-17 04:48:10.208 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 1079

03-17 04:48:10.218 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: callActivityOnCreate

03-17 04:48:10.218 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 6 element ----

03-17 04:48:10.218 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)

03-17 04:48:10.228 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.app.ActivityThread

03-17 04:48:10.228 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: ActivityThread.java

03-17 04:48:10.228 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 2023

03-17 04:48:10.228 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: performLaunchActivity

03-17 04:48:10.228 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 7 element ----

03-17 04:48:10.238 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)

03-17 04:48:10.238 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.app.ActivityThread

03-17 04:48:10.238 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: ActivityThread.java

03-17 04:48:10.238 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 2084

03-17 04:48:10.248 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: handleLaunchActivity

03-17 04:48:10.248 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 8 element ----

03-17 04:48:10.248 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.app.ActivityThread.access$600(ActivityThread.java:130)

03-17 04:48:10.258 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.app.ActivityThread

03-17 04:48:10.258 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: ActivityThread.java

03-17 04:48:10.258 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 130

03-17 04:48:10.258 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: access$600

03-17 04:48:10.268 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 9 element ----

03-17 04:48:10.268 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)

03-17 04:48:10.268 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.app.ActivityThread$H

03-17 04:48:10.268 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: ActivityThread.java

03-17 04:48:10.268 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 1195

03-17 04:48:10.268 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: handleMessage

03-17 04:48:10.278 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 10 element ----

03-17 04:48:10.278 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.os.Handler.dispatchMessage(Handler.java:99)

03-17 04:48:10.278 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.os.Handler

03-17 04:48:10.278 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: Handler.java

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 99

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: dispatchMessage

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 11 element ----

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.os.Looper.loop(Looper.java:137)

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.os.Looper

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: Looper.java

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 137

03-17 04:48:10.288 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: loop

03-17 04:48:10.300 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 12 element ----

03-17 04:48:10.300 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: android.app.ActivityThread.main(ActivityThread.java:4745)

03-17 04:48:10.308 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: android.app.ActivityThread

03-17 04:48:10.308 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: ActivityThread.java

03-17 04:48:10.308 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 4745

03-17 04:48:10.308 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: main

03-17 04:48:10.308 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 13 element ----

03-17 04:48:10.308 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: java.lang.reflect.Method.invokeNative(Native Method)

03-17 04:48:10.308 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: java.lang.reflect.Method

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: Method.java

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: -2

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: invokeNative

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 14 element ----

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: java.lang.reflect.Method.invoke(Method.java:511)

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: java.lang.reflect.Method

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 511

03-17 04:48:10.318 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: invoke

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 15 element ----

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: com.android.internal.os.ZygoteInit$MethodAndArgsCaller

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: ZygoteInit.java

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 786

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: run

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 16 element ----

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: com.android.internal.os.ZygoteInit

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: 553

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: MethodName: main

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: ---- the 17 element ----

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: toString: dalvik.system.NativeStart.main(Native Method)

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: ClassName: dalvik.system.NativeStart

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: FileName: NativeStart.java

03-17 04:48:10.328 701-701/com.loaderman.getthreadstatusdemo I/System.out: LineNumber: -2

可以發現當擷取stack trace的語句放在另一個方法（工具類方法）中的時候，數組索引為3的元素可以找到該工具類方法的調用地點。

在此例中，找到的是onCreate()方法中的第12行。

擷取目前線程狀态--Thread類

繼續閱讀

Java小案例——随機數猜測随機數猜測

nginx location中斜線的位置的重要性

27 Best Free Eclipse Plug-ins for Java Developer to be ProductiveCode Quality PluginsText Editor PluginsDependency ManagementVersion Control Integration PluginsFramework Development Continuous Integration Related PluginsOther Utility Plugins

Java String.format方法的簡單使用

neo4j之cypher使用文檔

GitHub連夜封殺！這份阿裡 10W 字内部 Java 字面試手冊到底有多強？

spark/scala關于【資源檔案】加載方法概述外部檔案加載方案測試資源檔案打包入jar包中小結

mybatis_入門程式Mybatis入門

AOP程式設計_Android優雅權限架構(1)概念基礎，2021金三銀四前言正文大綱正文

Effective Java 8:通用程式設計

OOM三種類型

工廠模式-三種類型

【遞歸】高效率求2的n次幂

Android APK檔案反編譯Android APK檔案反編譯

win10本地scala和spark安裝安裝scala安裝spark

scala (3) Function 和 Method