Android查看任务栈

Thanks

我是从这个博客学习到的：
http://blog.sina.com.cn/s/blog_5de73d0b0102xky0.html

本文基于此博客进行一个划重点的记录。

明确问题：
即，我们如何去观察一个app进程的Activity任务栈情况。

我为什么选择这种方式：
网上还找到一种方式，就是在terminal内直接输出相关信息，但我发现这些信息又臭又长，不能很好的观察，并且也无法copy完全到其他地方观察，这种方式比较符合我的使用习惯，感觉可靠一些。

PS：
本文的重点在于，“如何查看任务栈”，所以对于后面使用Activity启动模式作为例子并没有对启动模式深挖。
若想更深层次的了解启动模式请看这篇博客:

先给出答案

C:\Users\Administrator\Desktop>adb shell dumpsys activity -p com.packagename.packagename > taskinfos.txt

划重点：

• dumpsys
  adb shell 核心指令，用于查看手机的运行数据。

• -p com.packagename.packagename
  -p 后面跟的是需要观察的进程包名，你要看哪个app相关的任务栈，就跟哪一个包名。前提是你要知道该app包名。

• C:\Users\Administrator\Desktop> … taskinfos.txt
  这个是命令输入的路径，这里是写在桌面，为什么？因为方便看，你也可以自定义路径。

验证

记不住的东西是因为你不够坚信，眼见为实，这里来个例子，我就随便打开个以前的Demo来验证。

项目基本情况

观察栈内情况

这里我简单验证3种情况：

• 俩个标准启动模式的Activity，在栈内的情况
• 2个singleTask启动模式的Activity，在栈内的情况
• 2个singleInstance启动模式的Activity，在栈内的情况

界面就一个按钮点跳转。我这里点击了按钮，前台Activity是OtherActivity

因为是打开的之前的demo，所以其他功能请无视，就关注这个跳转的button就行了。

俩个标准启动模式的Activity，在栈内的情况

	
	ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
	Display #0 (activities from top to bottom):
	  Stack #1:
	  mResumedActivity=ActivityRecord{edcc0b8 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1918}
	  mFullscreen=true
	  mBounds=null
	    Task id #1918
	    mFullscreen=true
	    mBounds=null
	    mMinWidth=-1
	    mMinHeight=-1
	    mLastNonFullscreenBounds=null
	      TaskRecord{ab827fc #1918 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=2}
	      Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.MainActivity }
	        Hist #1: ActivityRecord{edcc0b8 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1918}
	          Intent { cmp=demo.greendaotest.com.greendaotestdemo/.OtherAcitivty }
	          ProcessRecord{57ffe85 15943:demo.greendaotest.com.greendaotestdemo/u0a212}
	          Local Activity bd7ee28 State:
	            mResumed=true mStopped=false mFinished=false
	            mChangingConfigurations=false
	            mCurrentConfig={1.0 460mcc1mnc [zh_CN] ldltr sw360dp w360dp h620dp 480dpi nrml long port finger -keyb/v/h -nav/h s.8 themeChanged=0 themeChangedFlags=0}
	            mLoadersStarted=true
	            FragmentManager misc state:
	              mHost=android.app.Activity$HostCallbacks@e921835
	              mContainer=android.app.Activity$HostCallbacks@e921835
	              mCurState=5 mStateSaved=false mDestroyed=false
	          ViewRoot:
	            mAdded=true mRemoved=false
	            mConsumeBatchedInputScheduled=false
	            mConsumeBatchedInputImmediatelyScheduled=false
	            mPendingInputEventCount=0
	            mProcessInputEventsScheduled=false
	            mTraversalScheduled=false            mIsAmbientMode=false
	            android.view.ViewRootImpl$NativePreImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$ImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$NativePostImeInputStage: mQueueLength=0
	          Choreographer:
	            mFrameScheduled=false
	            mLastFrameTime=31805298 (261 ms ago)
	          View Hierarchy:
	            DecorView@592a4ca[OtherAcitivty]
	              android.widget.LinearLayout{be1e63b V.E...... ........ 0,0-1080,1920}
	                android.view.ViewStub{ff73158 G.E...... ......I. 0,0-0,0 #1020400 android:id/action_mode_bar_stub}
	                android.widget.FrameLayout{f5902b1 V.E...... ........ 0,60-1080,1920}
	                  android.support.v7.widget.ActionBarOverlayLayout{d9e4396 V.E...... ........ 0,0-1080,1860 #7f0b004d app:id/decor_content_parent}
	                    android.support.v7.widget.ContentFrameLayout{feab17 V.E...... ........ 0,168-1080,1860 #1020002 android:id/content}
	                      android.support.constraint.ConstraintLayout{f5a0b04 V.E...... ........ 0,0-1080,1692}
	                    android.support.v7.widget.ActionBarContainer{1ca18ed V.ED..... ........ 0,0-1080,168 #7f0b004e app:id/action_bar_container}
	                      android.support.v7.widget.Toolbar{af30322 V.E...... ........ 0,0-1080,168 #7f0b004f app:id/action_bar}
	                        android.support.v7.widget.AppCompatTextView{2b8e1b3 V.ED..... ........ 48,43-585,124}
	                        android.support.v7.widget.ActionMenuView{eed370 V.E...... ......ID 1080,0-1080,168}
	                      android.support.v7.widget.ActionBarContextView{2bc56e9 G.E...... ......I. 0,0-0,0 #7f0b0050 app:id/action_context_bar}
	              android.view.View{de22f6e V.ED..... ........ 0,0-1080,60 #102002f android:id/statusBarBackground}
	          Looper (main, tid 1) {d5e60f}
	            package demo.greendaotest.com.greendaotestdemo version Code: 1 version Name: 1.0 cur loop is : Looper (main, tid 1) {d5e60f}
	---------- Dump MessageQueue on Looper (main, tid 1) {d5e60f}----------
	           (Total messages: 0, polling=false, quitting=false)
	-------------------------- END --------------------------
	
	          Local FragmentActivity bd7ee28 State:
	            mCreated=truemResumed=true mStopped=false mReallyStopped=false
	            mLoadersStarted=true
	          FragmentManager misc state:
	            mHost=android.support.v4.app.FragmentActivity$HostCallbacks@5c5b69c
	            mContainer=android.support.v4.app.FragmentActivity$HostCallbacks@5c5b69c
	            mCurState=5 mStateSaved=false mDestroyed=false
	
	        Hist #0: ActivityRecord{c25995b u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1918}
	          Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.MainActivity }
	          ProcessRecord{57ffe85 15943:demo.greendaotest.com.greendaotestdemo/u0a212}
	          Local Activity beb66bb State:
	            mResumed=false mStopped=true mFinished=false
	            mChangingConfigurations=false
	            mCurrentConfig={1.0 460mcc1mnc [zh_CN] ldltr sw360dp w360dp h620dp 480dpi nrml long port finger -keyb/v/h -nav/h s.8 themeChanged=0 themeChangedFlags=0}
	            mLoadersStarted=true
	            FragmentManager misc state:
	              mHost=android.app.Activity$HostCallbacks@b7a78a5
	              mContainer=android.app.Activity$HostCallbacks@b7a78a5
	              mCurState=3 mStateSaved=true mDestroyed=false
	          ViewRoot:
	            mAdded=true mRemoved=false
	            mConsumeBatchedInputScheduled=false
	            mConsumeBatchedInputImmediatelyScheduled=false
	            mPendingInputEventCount=0
	            mProcessInputEventsScheduled=false
	            mTraversalScheduled=false            mIsAmbientMode=false
	            android.view.ViewRootImpl$NativePreImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$ImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$NativePostImeInputStage: mQueueLength=0
	          Choreographer:
	            mFrameScheduled=false
	            mLastFrameTime=31805298 (281 ms ago)
	          View Hierarchy:
	            DecorView@885d47a[MainActivity]
	              android.widget.LinearLayout{814d42b V.E...... .......D 0,0-1080,1920}
	                android.view.ViewStub{dc5a088 G.E...... ......I. 0,0-0,0 #1020400 android:id/action_mode_bar_stub}
	                android.widget.FrameLayout{53efa21 V.E...... .......D 0,60-1080,1920}
	                  android.support.v7.widget.ActionBarOverlayLayout{28cbe46 V.E...... .......D 0,0-1080,1860 #7f0b004d app:id/decor_content_parent}
	                    android.support.v7.widget.ContentFrameLayout{80a8807 V.E...... .......D 0,168-1080,1860 #1020002 android:id/content}
	                      android.widget.LinearLayout{e583d34 V.E...... .......D 0,0-1080,1692}
	                        android.support.v7.widget.AppCompatButton{870175d VFED..C.. ......ID 0,0-515,144 #7f0b005e app:id/jump2other}
	                        android.widget.LinearLayout{dc678d2 V.E...... .......D 0,144-1080,288}
	                          android.support.v7.widget.AppCompatButton{abd9da3 VFED..C.. ......ID 12,0-276,144 #7f0b001b app:id/add}
	                          android.support.v7.widget.AppCompatButton{7d5f8a0 VFED..C.. ......ID 276,0-540,144 #7f0b005f app:id/del}
	                          android.support.v7.widget.AppCompatButton{39bcc59 VFED..C.. ......ID 540,0-804,144 #7f0b0060 app:id/edit}
	                          android.support.v7.widget.AppCompatButton{76f501e VFED..C.. ......ID 804,0-1068,144 #7f0b0061 app:id/query}
	                        android.widget.ScrollView{a0270ff VFED.V... ........ 0,288-1080,1692}
	                          android.widget.RelativeLayout{5b1fecc V.E...... ........ 0,0-1080,449}
	                            android.support.v7.widget.AppCompatTextView{633d515 V.ED..... ........ 235,0-845,449 #7f0b0062 app:id/content_tv}
	                        android.support.v7.widget.AppCompatButton{23c502a VFED..C.. ......ID 0,1692-557,1692}
	                    android.support.v7.widget.ActionBarContainer{e971e1b V.ED..... ......ID 0,0-1080,168 #7f0b004e app:id/action_bar_container}
	                      android.support.v7.widget.Toolbar{5663bb8 V.E...... ........ 0,0-1080,168 #7f0b004f app:id/action_bar}
	                        android.support.v7.widget.AppCompatTextView{b09ad91 V.ED..... ........ 48,43-585,124}
	                        android.support.v7.widget.ActionMenuView{52744f6 V.E...... ......ID 1080,0-1080,168}
	                      android.support.v7.widget.ActionBarContextView{4ff80f7 G.E...... ......I. 0,0-0,0 #7f0b0050 app:id/action_context_bar}
	              android.view.View{1f5b64 V.ED..... ......ID 0,0-1080,60 #102002f android:id/statusBarBackground}
	          Looper (main, tid 1) {d5e60f}
	            package demo.greendaotest.com.greendaotestdemo version Code: 1 version Name: 1.0 cur loop is : Looper (main, tid 1) {d5e60f}
	---------- Dump MessageQueue on Looper (main, tid 1) {d5e60f}----------
	           (Total messages: 0, polling=false, quitting=false)
	-------------------------- END --------------------------
	
	          Local FragmentActivity beb66bb State:
	            mCreated=truemResumed=false mStopped=true mReallyStopped=true
	            mLoadersStarted=true
	          FragmentManager misc state:
	            mHost=android.support.v4.app.FragmentActivity$HostCallbacks@e8a91cd
	            mContainer=android.support.v4.app.FragmentActivity$HostCallbacks@e8a91cd
	            mCurState=2 mStateSaved=true mDestroyed=false
	
	    Running activities (most recent first):
	      TaskRecord{ab827fc #1918 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=2}
	        Run #3: ActivityRecord{edcc0b8 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1918}
	        Run #2: ActivityRecord{c25995b u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1918}
	
	    mResumedActivity: ActivityRecord{edcc0b8 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1918}
	
	  mFocusedActivity: ActivityRecord{edcc0b8 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1918}
	

这个东西这么多，具体怎么看呢？（搜索Hist关键字）

• Hist #1: ActivityRecord{edcc0b8 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1918}
• Hist #0: ActivityRecord{c25995b u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1918}

这就是当前任务栈的情况。

2个singleTask启动模式的Activity，在栈内的情况

接下来我们将俩个Activity设置为singleTask。并将OtherActivity切换至前台。

	
	
	ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
	Display #0 (activities from top to bottom):
	  Stack #1:
	  mResumedActivity=ActivityRecord{59f7102 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1946}
	  mFullscreen=true
	  mBounds=null
	    Task id #1946
	    mFullscreen=true
	    mBounds=null
	    mMinWidth=-1
	    mMinHeight=-1
	    mLastNonFullscreenBounds=null
	      TaskRecord{48d14ff #1946 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=2}
	      Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.MainActivity }
	        Hist #1: ActivityRecord{59f7102 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1946}
	          Intent { flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.OtherAcitivty }
	          ProcessRecord{8b1d2cc 13475:demo.greendaotest.com.greendaotestdemo/u0a212}
	          Local Activity 31cea27 State:
	            mResumed=true mStopped=false mFinished=false
	            mChangingConfigurations=false
	            mCurrentConfig={1.0 460mcc1mnc [zh_CN] ldltr sw360dp w360dp h620dp 480dpi nrml long port finger -keyb/v/h -nav/h s.8 themeChanged=0 themeChangedFlags=0}
	            mLoadersStarted=true
	            FragmentManager misc state:
	              mHost=android.app.Activity$HostCallbacks@ff73158
	              mContainer=android.app.Activity$HostCallbacks@ff73158
	              mCurState=5 mStateSaved=false mDestroyed=false
	          ViewRoot:
	            mAdded=true mRemoved=false
	            mConsumeBatchedInputScheduled=false
	            mConsumeBatchedInputImmediatelyScheduled=false
	            mPendingInputEventCount=0
	            mProcessInputEventsScheduled=false
	            mTraversalScheduled=false            mIsAmbientMode=false
	            android.view.ViewRootImpl$NativePreImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$ImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$NativePostImeInputStage: mQueueLength=0
	          Choreographer:
	            mFrameScheduled=false
	            mLastFrameTime=35169617 (5438 ms ago)
	          View Hierarchy:
	            DecorView@f5902b1[OtherAcitivty]
	              android.widget.LinearLayout{d9e4396 V.E...... ........ 0,0-1080,1920}
	                android.view.ViewStub{feab17 G.E...... ......I. 0,0-0,0 #1020400 android:id/action_mode_bar_stub}
	                android.widget.FrameLayout{f5a0b04 V.E...... ........ 0,60-1080,1920}
	                  android.support.v7.widget.ActionBarOverlayLayout{1ca18ed V.E...... ........ 0,0-1080,1860 #7f0b004d app:id/decor_content_parent}
	                    android.support.v7.widget.ContentFrameLayout{af30322 V.E...... ........ 0,168-1080,1860 #1020002 android:id/content}
	                      android.support.constraint.ConstraintLayout{2b8e1b3 V.E...... ........ 0,0-1080,1692}
	                    android.support.v7.widget.ActionBarContainer{eed370 V.ED..... ........ 0,0-1080,168 #7f0b004e app:id/action_bar_container}
	                      android.support.v7.widget.Toolbar{2bc56e9 V.E...... ........ 0,0-1080,168 #7f0b004f app:id/action_bar}
	                        android.support.v7.widget.AppCompatTextView{de22f6e V.ED..... ........ 48,43-585,124}
	                        android.support.v7.widget.ActionMenuView{d5e60f V.E...... ......ID 1080,0-1080,168}
	                      android.support.v7.widget.ActionBarContextView{5c5b69c G.E...... ......I. 0,0-0,0 #7f0b0050 app:id/action_context_bar}
	              android.view.View{b7a78a5 V.ED..... ........ 0,0-1080,60 #102002f android:id/statusBarBackground}
	          Looper (main, tid 1) {885d47a}
	            package demo.greendaotest.com.greendaotestdemo version Code: 1 version Name: 1.0 cur loop is : Looper (main, tid 1) {885d47a}
	---------- Dump MessageQueue on Looper (main, tid 1) {885d47a}----------
	           (Total messages: 0, polling=false, quitting=false)
	-------------------------- END --------------------------
	
	          Local FragmentActivity 31cea27 State:
	            mCreated=truemResumed=true mStopped=false mReallyStopped=false
	            mLoadersStarted=true
	          FragmentManager misc state:
	            mHost=android.support.v4.app.FragmentActivity$HostCallbacks@814d42b
	            mContainer=android.support.v4.app.FragmentActivity$HostCallbacks@814d42b
	            mCurState=5 mStateSaved=false mDestroyed=false
	
	        Hist #0: ActivityRecord{59093de u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1946}
	          Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.MainActivity }
	          ProcessRecord{8b1d2cc 13475:demo.greendaotest.com.greendaotestdemo/u0a212}
	          Local Activity beb66bb State:
	            mResumed=false mStopped=true mFinished=false
	            mChangingConfigurations=false
	            mCurrentConfig={1.0 460mcc1mnc [zh_CN] ldltr sw360dp w360dp h620dp 480dpi nrml long port finger -keyb/v/h -nav/h s.8 themeChanged=0 themeChangedFlags=0}
	            mLoadersStarted=true
	            FragmentManager misc state:
	              mHost=android.app.Activity$HostCallbacks@dc5a088
	              mContainer=android.app.Activity$HostCallbacks@dc5a088
	              mCurState=3 mStateSaved=true mDestroyed=false
	          ViewRoot:
	            mAdded=true mRemoved=false
	            mConsumeBatchedInputScheduled=false
	            mConsumeBatchedInputImmediatelyScheduled=false
	            mPendingInputEventCount=0
	            mProcessInputEventsScheduled=false
	            mTraversalScheduled=false            mIsAmbientMode=false
	            android.view.ViewRootImpl$NativePreImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$ImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$NativePostImeInputStage: mQueueLength=0
	          Choreographer:
	            mFrameScheduled=false
	            mLastFrameTime=35169617 (5453 ms ago)
	          View Hierarchy:
	            DecorView@53efa21[MainActivity]
	              android.widget.LinearLayout{28cbe46 V.E...... .......D 0,0-1080,1920}
	                android.view.ViewStub{80a8807 G.E...... ......I. 0,0-0,0 #1020400 android:id/action_mode_bar_stub}
	                android.widget.FrameLayout{e583d34 V.E...... .......D 0,60-1080,1920}
	                  android.support.v7.widget.ActionBarOverlayLayout{870175d V.E...... .......D 0,0-1080,1860 #7f0b004d app:id/decor_content_parent}
	                    android.support.v7.widget.ContentFrameLayout{dc678d2 V.E...... .......D 0,168-1080,1860 #1020002 android:id/content}
	                      android.widget.LinearLayout{abd9da3 V.E...... .......D 0,0-1080,1692}
	                        android.support.v7.widget.AppCompatButton{7d5f8a0 VFED..C.. ......ID 0,0-515,144 #7f0b005e app:id/jump2other}
	                        android.widget.LinearLayout{39bcc59 V.E...... .......D 0,144-1080,288}
	                          android.support.v7.widget.AppCompatButton{76f501e VFED..C.. ......ID 12,0-276,144 #7f0b001b app:id/add}
	                          android.support.v7.widget.AppCompatButton{a0270ff VFED..C.. ......ID 276,0-540,144 #7f0b005f app:id/del}
	                          android.support.v7.widget.AppCompatButton{5b1fecc VFED..C.. ......ID 540,0-804,144 #7f0b0060 app:id/edit}
	                          android.support.v7.widget.AppCompatButton{633d515 VFED..C.. ......ID 804,0-1068,144 #7f0b0061 app:id/query}
	                        android.widget.ScrollView{23c502a VFED.V... ........ 0,288-1080,1692}
	                          android.widget.RelativeLayout{e971e1b V.E...... ........ 0,0-1080,449}
	                            android.support.v7.widget.AppCompatTextView{5663bb8 V.ED..... ........ 235,0-845,449 #7f0b0062 app:id/content_tv}
	                        android.support.v7.widget.AppCompatButton{b09ad91 VFED..C.. ......ID 0,1692-557,1692}
	                    android.support.v7.widget.ActionBarContainer{52744f6 V.ED..... ......ID 0,0-1080,168 #7f0b004e app:id/action_bar_container}
	                      android.support.v7.widget.Toolbar{4ff80f7 V.E...... ........ 0,0-1080,168 #7f0b004f app:id/action_bar}
	                        android.support.v7.widget.AppCompatTextView{1f5b64 V.ED..... ........ 48,43-585,124}
	                        android.support.v7.widget.ActionMenuView{e8a91cd V.E...... ......ID 1080,0-1080,168}
	                      android.support.v7.widget.ActionBarContextView{afaba82 G.E...... ......I. 0,0-0,0 #7f0b0050 app:id/action_context_bar}
	              android.view.View{4213593 V.ED..... ......ID 0,0-1080,60 #102002f android:id/statusBarBackground}
	          Looper (main, tid 1) {885d47a}
	            package demo.greendaotest.com.greendaotestdemo version Code: 1 version Name: 1.0 cur loop is : Looper (main, tid 1) {885d47a}
	---------- Dump MessageQueue on Looper (main, tid 1) {885d47a}----------
	           (Total messages: 0, polling=false, quitting=false)
	-------------------------- END --------------------------
	
	          Local FragmentActivity beb66bb State:
	            mCreated=truemResumed=false mStopped=true mReallyStopped=true
	            mLoadersStarted=true
	          FragmentManager misc state:
	            mHost=android.support.v4.app.FragmentActivity$HostCallbacks@328c9d0
	            mContainer=android.support.v4.app.FragmentActivity$HostCallbacks@328c9d0
	            mCurState=2 mStateSaved=true mDestroyed=false
	
	    Running activities (most recent first):
	      TaskRecord{48d14ff #1946 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=2}
	        Run #4: ActivityRecord{59f7102 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1946}
	        Run #3: ActivityRecord{59093de u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1946}
	
	    mResumedActivity: ActivityRecord{59f7102 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1946}
	
	  mFocusedActivity: ActivityRecord{59f7102 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1946}
	

搜索“task id”关键字，查看有几个栈，栈内存在的acitivity信息。

• Task id #1946
  就一个栈，栈内2个Acitivty。

搜索“hist”关键字，查看到栈内情况。

• Hist #1: ActivityRecord{59f7102 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1946}
• Hist #0: ActivityRecord{59093de u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1946}

2个singleInstance启动模式的Activity，在栈内的情况

将2个Acitivity改为singleinstance。并将OtherActivity切换至前台。

	ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
	Display #0 (activities from top to bottom):
	  Stack #1:
	  mResumedActivity=ActivityRecord{c5a5e13 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1956}
	  mFullscreen=true
	  mBounds=null
	    Task id #1956
	    mFullscreen=true
	    mBounds=null
	    mMinWidth=-1
	    mMinHeight=-1
	    mLastNonFullscreenBounds=null
	      TaskRecord{1b945dc #1956 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=1}
	      Intent { flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.OtherAcitivty }
	        Hist #0: ActivityRecord{c5a5e13 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1956}
	          Intent { flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.OtherAcitivty }
	          ProcessRecord{353f6e5 23335:demo.greendaotest.com.greendaotestdemo/u0a212}
	          Local Activity bd7ee28 State:
	            mResumed=true mStopped=false mFinished=false
	            mChangingConfigurations=false
	            mCurrentConfig={1.0 460mcc1mnc [zh_CN] ldltr sw360dp w360dp h620dp 480dpi nrml long port finger -keyb/v/h -nav/h s.8 themeChanged=0 themeChangedFlags=0}
	            mLoadersStarted=true
	            FragmentManager misc state:
	              mHost=android.app.Activity$HostCallbacks@e921835
	              mContainer=android.app.Activity$HostCallbacks@e921835
	              mCurState=5 mStateSaved=false mDestroyed=false
	          ViewRoot:
	            mAdded=true mRemoved=false
	            mConsumeBatchedInputScheduled=false
	            mConsumeBatchedInputImmediatelyScheduled=false
	            mPendingInputEventCount=0
	            mProcessInputEventsScheduled=false
	            mTraversalScheduled=false            mIsAmbientMode=false
	            android.view.ViewRootImpl$NativePreImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$ImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$NativePostImeInputStage: mQueueLength=0
	          Choreographer:
	            mFrameScheduled=false
	            mLastFrameTime=35865498 (12583 ms ago)
	          View Hierarchy:
	            DecorView@592a4ca[OtherAcitivty]
	              android.widget.LinearLayout{be1e63b V.E...... ........ 0,0-1080,1920}
	                android.view.ViewStub{ff73158 G.E...... ......I. 0,0-0,0 #1020400 android:id/action_mode_bar_stub}
	                android.widget.FrameLayout{f5902b1 V.E...... ........ 0,60-1080,1920}
	                  android.support.v7.widget.ActionBarOverlayLayout{d9e4396 V.E...... ........ 0,0-1080,1860 #7f0b004d app:id/decor_content_parent}
	                    android.support.v7.widget.ContentFrameLayout{feab17 V.E...... ........ 0,168-1080,1860 #1020002 android:id/content}
	                      android.support.constraint.ConstraintLayout{f5a0b04 V.E...... ........ 0,0-1080,1692}
	                    android.support.v7.widget.ActionBarContainer{1ca18ed V.ED..... ........ 0,0-1080,168 #7f0b004e app:id/action_bar_container}
	                      android.support.v7.widget.Toolbar{af30322 V.E...... ........ 0,0-1080,168 #7f0b004f app:id/action_bar}
	                        android.support.v7.widget.AppCompatTextView{2b8e1b3 V.ED..... ........ 48,43-585,124}
	                        android.support.v7.widget.ActionMenuView{eed370 V.E...... ......ID 1080,0-1080,168}
	                      android.support.v7.widget.ActionBarContextView{2bc56e9 G.E...... ......I. 0,0-0,0 #7f0b0050 app:id/action_context_bar}
	              android.view.View{de22f6e V.ED..... ........ 0,0-1080,60 #102002f android:id/statusBarBackground}
	          Looper (main, tid 1) {d5e60f}
	            package demo.greendaotest.com.greendaotestdemo version Code: 1 version Name: 1.0 cur loop is : Looper (main, tid 1) {d5e60f}
	---------- Dump MessageQueue on Looper (main, tid 1) {d5e60f}----------
	           (Total messages: 0, polling=false, quitting=false)
	-------------------------- END --------------------------
	
	          Local FragmentActivity bd7ee28 State:
	            mCreated=truemResumed=true mStopped=false mReallyStopped=false
	            mLoadersStarted=true
	          FragmentManager misc state:
	            mHost=android.support.v4.app.FragmentActivity$HostCallbacks@5c5b69c
	            mContainer=android.support.v4.app.FragmentActivity$HostCallbacks@5c5b69c
	            mCurState=5 mStateSaved=false mDestroyed=false
	    Task id #1953
	    mFullscreen=true
	    mBounds=null
	    mMinWidth=-1
	    mMinHeight=-1
	    mLastNonFullscreenBounds=null
	      TaskRecord{a1815ba #1953 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=1}
	      Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.MainActivity }
	        Hist #0: ActivityRecord{590df4d u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1953}
	          Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.MainActivity }
	          ProcessRecord{353f6e5 23335:demo.greendaotest.com.greendaotestdemo/u0a212}
	          Local Activity beb66bb State:
	            mResumed=false mStopped=true mFinished=false
	            mChangingConfigurations=false
	            mCurrentConfig={1.0 460mcc1mnc [zh_CN] ldltr sw360dp w360dp h620dp 480dpi nrml long port finger -keyb/v/h -nav/h s.8 themeChanged=0 themeChangedFlags=0}
	            mLoadersStarted=true
	            FragmentManager misc state:
	              mHost=android.app.Activity$HostCallbacks@b7a78a5
	              mContainer=android.app.Activity$HostCallbacks@b7a78a5
	              mCurState=3 mStateSaved=true mDestroyed=false
	          ViewRoot:
	            mAdded=true mRemoved=false
	            mConsumeBatchedInputScheduled=false
	            mConsumeBatchedInputImmediatelyScheduled=false
	            mPendingInputEventCount=0
	            mProcessInputEventsScheduled=false
	            mTraversalScheduled=false            mIsAmbientMode=false
	            android.view.ViewRootImpl$NativePreImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$ImeInputStage: mQueueLength=0
	            android.view.ViewRootImpl$NativePostImeInputStage: mQueueLength=0
	          Choreographer:
	            mFrameScheduled=false
	            mLastFrameTime=35865498 (12605 ms ago)
	          View Hierarchy:
	            DecorView@885d47a[MainActivity]
	              android.widget.LinearLayout{814d42b V.E...... .......D 0,0-1080,1920}
	                android.view.ViewStub{dc5a088 G.E...... ......I. 0,0-0,0 #1020400 android:id/action_mode_bar_stub}
	                android.widget.FrameLayout{53efa21 V.E...... .......D 0,60-1080,1920}
	                  android.support.v7.widget.ActionBarOverlayLayout{28cbe46 V.E...... .......D 0,0-1080,1860 #7f0b004d app:id/decor_content_parent}
	                    android.support.v7.widget.ContentFrameLayout{80a8807 V.E...... .......D 0,168-1080,1860 #1020002 android:id/content}
	                      android.widget.LinearLayout{e583d34 V.E...... ......ID 0,0-1080,1692}
	                        android.support.v7.widget.AppCompatButton{870175d VFED..C.. ......ID 0,0-515,144 #7f0b005e app:id/jump2other}
	                        android.widget.LinearLayout{dc678d2 V.E...... .......D 0,144-1080,288}
	                          android.support.v7.widget.AppCompatButton{abd9da3 VFED..C.. ......ID 12,0-276,144 #7f0b001b app:id/add}
	                          android.support.v7.widget.AppCompatButton{7d5f8a0 VFED..C.. ......ID 276,0-540,144 #7f0b005f app:id/del}
	                          android.support.v7.widget.AppCompatButton{39bcc59 VFED..C.. ......ID 540,0-804,144 #7f0b0060 app:id/edit}
	                          android.support.v7.widget.AppCompatButton{76f501e VFED..C.. ......ID 804,0-1068,144 #7f0b0061 app:id/query}
	                        android.widget.ScrollView{a0270ff VFED.V... ........ 0,288-1080,1692}
	                          android.widget.RelativeLayout{5b1fecc V.E...... ........ 0,0-1080,449}
	                            android.support.v7.widget.AppCompatTextView{633d515 V.ED..... ........ 235,0-845,449 #7f0b0062 app:id/content_tv}
	                        android.support.v7.widget.AppCompatButton{23c502a VFED..C.. ......ID 0,1692-557,1692}
	                    android.support.v7.widget.ActionBarContainer{e971e1b V.ED..... ......ID 0,0-1080,168 #7f0b004e app:id/action_bar_container}
	                      android.support.v7.widget.Toolbar{5663bb8 V.E...... ........ 0,0-1080,168 #7f0b004f app:id/action_bar}
	                        android.support.v7.widget.AppCompatTextView{b09ad91 V.ED..... ........ 48,43-585,124}
	                        android.support.v7.widget.ActionMenuView{52744f6 V.E...... ......ID 1080,0-1080,168}
	                      android.support.v7.widget.ActionBarContextView{4ff80f7 G.E...... ......I. 0,0-0,0 #7f0b0050 app:id/action_context_bar}
	              android.view.View{1f5b64 V.ED..... ......ID 0,0-1080,60 #102002f android:id/statusBarBackground}
	          Looper (main, tid 1) {d5e60f}
	            package demo.greendaotest.com.greendaotestdemo version Code: 1 version Name: 1.0 cur loop is : Looper (main, tid 1) {d5e60f}
	---------- Dump MessageQueue on Looper (main, tid 1) {d5e60f}----------
	           (Total messages: 0, polling=false, quitting=false)
	-------------------------- END --------------------------
	
	          Local FragmentActivity beb66bb State:
	            mCreated=truemResumed=false mStopped=true mReallyStopped=true
	            mLoadersStarted=true
	          FragmentManager misc state:
	            mHost=android.support.v4.app.FragmentActivity$HostCallbacks@e8a91cd
	            mContainer=android.support.v4.app.FragmentActivity$HostCallbacks@e8a91cd
	            mCurState=2 mStateSaved=true mDestroyed=false
	
	    Running activities (most recent first):
	      TaskRecord{1b945dc #1956 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=1}
	        Run #3: ActivityRecord{c5a5e13 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1956}
	      TaskRecord{a1815ba #1953 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=1}
	        Run #2: ActivityRecord{590df4d u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1953}
	
	    mResumedActivity: ActivityRecord{c5a5e13 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1956}
	
	  mFocusedActivity: ActivityRecord{c5a5e13 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1956}

这里得多唠叨下：

搜索“task id”关键字，查看有几个栈，栈内存在的acitivity信息。

这里可以看到是2个栈：

• Task id #1956 ，Task id #1953。
• 每个栈内存在一个activity，分别是。

 Task id #1956
    mFullscreen=true
    mBounds=null
    mMinWidth=-1
    mMinHeight=-1
    mLastNonFullscreenBounds=null
      TaskRecord{1b945dc #1956 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=1}
      Intent { flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.OtherAcitivty }
        Hist #0: ActivityRecord{c5a5e13 u0 demo.greendaotest.com.greendaotestdemo/.OtherAcitivty t1956}

Task id #1953
    mFullscreen=true
    mBounds=null
    mMinWidth=-1
    mMinHeight=-1
    mLastNonFullscreenBounds=null
      TaskRecord{a1815ba #1953 A=demo.greendaotest.com.greendaotestdemo U=0 StackId=1 sz=1}
      Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=demo.greendaotest.com.greendaotestdemo/.MainActivity }
        Hist #0: ActivityRecord{590df4d u0 demo.greendaotest.com.greendaotestdemo/.MainActivity t1953}

本文分析的文件：
https://download.csdn.net/download/user11223344abc/10367965