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KHOA CÔNG NGHỆ THÔNG TIN
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Ngành Công nghệ thông tin
Đề tài:
XÂY DỰNG ỨNG DỤNG QUẢN LÝ
THIẾT BỊ ĐIỆN TRONG TÒA NHÀ
TRÊN ANDROID
 ĐÀO TRUNG SƠN
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LỜI CẢM ƠN
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Đào Trung Sơn
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MỤC LỤC
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DANH MỤC HÌNH ẢNH
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LỜI NÓI ĐẦU
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CHƯƠNG 1
CƠ SỞ LÝ THUYẾT
1.1. Các giao thức truyền dữ liệu và cơ chế chuyển đổi
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ƒC-\cnm7"E>E+>;1DE>ƒ>$$$C~&;$q>67?.
16fF.€P,7C-&;$q/F.*-•$>C'•'E•EF1='p&Pƒ+#
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‰G_  B‰ ‹G_  B‰ ‹  ‰G_  B)‰••)‹)‹G_  B•8G  -

B‰ƒ‰8 G>$&-C6-7S%`Ss&2;>$&•ŠLNNOŽTU&
O
S?6S%`c$;P>$&F#$#$-7U&+6]'%!'0&\c%R&
SZ6^$'•Z6P
• Endpoint:•jZ;*&;-$&;$q$;"PY6&_*j
SZ*6J$0Sj&%C-*jU*0&B$'EGPUB$1G%R&W
0C,6/1$!UBCEG>$&*0&E>EP
• Sender:Z*SQ6A;*jF.P:'*0$^">6&-$*j
SJ%`&F&=pZa1vS%`&@C-SZ*&6WB1$6>EE'"$GP
• Recipient:Z*6J4&A;*jF.P:'*0$^">6&-$
*jSJ%`&F^pZa1vS%`&@C-SZ*SoB'E1;$
E'"$GP
• Client:Z*F;SQ6A;*j76Q6_SZ*SoA;*jS#"q&>.?P
• Server:Z*6JA;*j76Q6_SZ*F;SQ6A;*jS#"q&>.?P
• Origin Server:•#7A>$&Sa*-*j-&67Fc>%!C%6>U
$kS%`0$>;P
• Intermediary:•jSZ*SQ66J$8ƒ*-a;>y$0Sj&%*j
1E>E>$k*jCE~aZE$%!&>6&&;/\;€%!&?
*j‰>&1E>E>Pa;C$0>6&&;"lFcSaC-">$+7->EE>1E
">$+7P>$&*j1J>%R&`"Y*jSZ*SQ66JaZ%+=%
*j$>&1E>E>_">$+7$k>EE>1E">$+7_;>y67ZSl';E$
>0&#A;*|76Q6P
• Proxy:•jB">$+7GC-*jE'"$S%`C;@Fw*jCE_%R&
S%`]6YpFj_SZFZ6'•#76Q6;7$#CE_
F]TY's~>;1C;$€Qc-$P•j-67Z'sS%`
JZ6_%C-#">$+7"pp#76Q6'-$B$;"G_
>$&T#76Q6T#aZ76Q6's>;$k's?#
ZT#;6#&;$qQ&q&'p&P
• Reverse Proxy: -*jE'"$*-$0Sj&%*jC!""o;>*j
-*#7A-[;*I#76Q6;7c$U&_F]T•

/c'sQc-$P:<&&J&%*j">$+7_>EE>1E">$+7
^#76Q6TaC-U&J$-&67So‘CE"#>;76
Q61vT<&bqS%`>{&aS;&&;$c"!*j>EE>1E">$+7P
• Confirmable Message:•j-F.76Q6Qa"US#">.?P
#F.-7&@C-B$D>*;FCEG~+#^€P:*-T<&a&a
NM
-$Fs*]_*|F.+#^1vao+#*jF.>.?E$
TZ68:$kTZ6E1EP
• Non-confirmable message:•j-F.T<&76Q6"US#"P,7
C-Sko>&A;*j-F.%R&S%`Ck"C0'-$#76
Q6q&'p&_%C-Ck"C0S@m*j.*FcTSA#1T
Jc"P
• Acknowledgment message:•jF."US#"1v"US#"C0*jF.
confirmableTaScPaT<&t>;1-<&;7]F0
A;F]T•76Q6S%`F;$&W*-$P
• Reset message:•jF.reset messagets>{&*jF.pZ
~confirmable $k non-confirmable€ SI^S%`_%&S<Ta
T<&S%`1=CbSU&P?6-7%R&+.7>;TU^SITw
Sj&C0-SIX6*j->0&#*-76Q6QS%;>;CR&.o
?F.P
• Piggy-backed Response:aF;$&W*SU&*jF.$8ƒ8:*-
S%`&=!F^"US#"A;76Q6'-$S#"q&-7P
• Separate Response::*jF.confirmable*;&*j76Q6S%`
"US#">.?!*jF.>J&~'FwY*#7A>.CRT<&
SU&#€_*jS#"q&>&~separate response€S%`&=S>$&*j
F.>;$Sl>&P
• Critical Option:•j47@Q#SZ*SQ66J^F.Z6
S%`SZ+=CbSU&F.PUb>{&>ZT;critical option_%
&pbB$"$GA;a_Y6&T<&|>`47@'(Sc
C$0F[F.P

• Elective Option•j47@*;&bSsFsF[X6;Fw*jSZ*SQ6
6J*-T<&Z6?aPx=CbF.^*oT<&QZ6?47
@S%`$"i"P
• Resource Discovery:c>Y>$&Sa*j$8ƒCE&=>67]
Sc*j*#7A?';1##*#7AC%6>\-&67P
,- !
•<Y%/&#A;&;$q$;"%/&%*<YCE„1E>E>A;
ƒP67_#TcX6.%/&#•L•>$&*j>ZT;$;"Sa&
;>y%.CE-1E>E>P•j76Q6$8ƒ1v&J&%76Q6>$&
NN
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U&*;&#76Q6S$k*;&#S#"q&>.?P>;$Sl/F.
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NL

Hình 1.3- Phân tầng trừu tượng của CoAP
Lớp message
!"*E11;&EA;$8ƒ';>>;$Sl#F.F{&‹ƒX6;#
SZ*SQ66JP
$8ƒ1='p&*j^"6S?E;'E>s",&naSj'-JSs~u
F7E€S%`E$1;6Fw*jT$.&47@s",-*j.";7C$;'Ps
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q;*j‹*E11;&E1='p&SZ'yY*#F.1;$Ck"-'-$47@
Sj^7P
Lớp request/response
&2;A;$8ƒ>EX6E1„>E1"$1EC-*;&E$#F.$8ƒ_U&F;$
&W*$kC-*I76Q6$kC-*IS#"q&P#<&47@~$k*k
Ss€$>EX6E1->E1"$1E%C--TZ6j'6&.>@&";7C$;'
S%`*;&S%C-#47@A;$8ƒP•j’F-47@S%`1='p&
SZ"J`">E1"$1E!>EX6E1SjC^"!#F.C!"'%!P
Trung gian và nhớ đệm
;$q$8ƒ|>`!S*#S#"q&SZ"pp6X6.SQ7SA
#76Q6P!S*S/&.S%`$"i"T1='p&#<&%/
*!-<&TZ*>;S%`*;&4&!#S#"q&$8ƒP4&!
S*S%`Sss>$&#SZ*SQ66J$k#>6&&;P
Chuyển đổi từ CoAP → HTTP
c676Q6~EX6E1€Scaq;>%R&47@ƒ>$+7‰"$!
#Ss;tFnSQ6C-“"”$k“"1”•ŠL‚N‚Ž_1;6Sa#SZ*6J
^F.$8ƒ~S%`&@C-B">$+79*#7A7X67Z€S%`76Q6S%;>;
$0Sj&pZE$"%/&"#"76Q6~EX6E1•E$'€F"o;ƒ
S%;>;->.?TcX6.A;76Q6Sc*#7T#~CE€P>$&"Q-71v
t>;##qSZF]T•76Q6$8ƒ-#S#"q&$8ƒ1vS%`
ƒ>$+7+=Cb->.C0*#7T#P
Ng
‹$$8ƒ-ƒ4&a6&^"#"%/&q/F.~>EX6E1

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T#?61$!76Q6-7Sc-&67$8ƒP•j1J#"%/&
q>&A;$8ƒTFZ6'•-$&6W-&67ƒ1vS%`>YF-7
cF'%!P
c6*#7A7X67?~ƒ>$+7€T<&Z"pp*j76Q6*;&Ss;t
ƒ_*IS#"q&ePMe~ƒ>$+7&$6""$>E'€1vS%`>.?$*#7
T#Pc6*#7ƒ>$+7"pp76Q6ScA;*#7T#F{&#`"#
!*jFqg~%C-*#7Aƒ&J€-T<&ZS0S%`TcX6.
>$&*jT6&R&;`"Cb_S#"q&ePMu~;E‡;7*E$6€1vS%`>.
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Chuyển đổi từ HTTP → CoAP
c6*j76Q6ƒ*-F>$&Ss;tA;76Q6aq;#
6S?“$;"”$k“$;"1”_SZ*6J^76Q6ƒ~*#7A7X67?9
ƒ>$+7€S%`76Q6SZFZ6'•#$0Sj&S%`t>;Fw"%/&q76
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1.2. Hệ điều hành Android
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Hình 1.4– Các tầng trong hệ điều hành Android
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• USB driver56.Cb$0Sj&A;#l&&;$c"3P
• Keypad driver?6TZF-"o*P
• Wifi Drivers6>#*?6"#1a&‡DP
• Audio DriverS?6TZ#Fj6"#,*;_&.*I#o6
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• Binder IPC Driver s6>#*? TcJ-CC0!
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• M-System Driver56.CbS@&PPPC#cFs!%’
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1. Phần Libraries:
ƒQ-7a?6%S%`cF{&„••SZ#"Q*?*aZ1=
'p&_#%SaS%`^"`"-*j1Ja*%
• Thư viện hệ thống (System C library)%';>6h_S%`
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8…8x–
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2. Phần Android runtime:
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Nˆ
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• Location Manager$"i"+#Sss>oA;S$0$0';-$
J&Sss$-Q6ƒ-$$&CE•;"1P
• Window Manager 56.Cb+,7'&-Zs#&;$'
&%R'4&z&%lqX6.Cb#&;$'&\;#q&'p&P
• Notication Manager :56.CbZs#<&F#$~%F#$a
n_aEH*;C*!PP€P
• Resource Manager56.Cb-&672A;#q&'p&F;$&W*
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•
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Ya'67]*jZ~1;E€S%`"i"07*-<P?6Sa
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NO
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 8'>$'C-*jS?6-ao*w_T#!?6S?6-'
Sj&T#_;'>$'$"i"*jq&'p&A;FqF;S%`"i"
07?P#q&'p&Sata*j0c[SaC-aT<&S%`
"i"1='6&X6#ešNM›<&16]ƒ_S?6Sa{SZ>#Sj
X67?>$&1='p&ƒP
œ&'p&T<&aSZ*-$JSs_T<&a"%/&q*;SZFnSQ6P
AB(C!..
8'>$'a/cX6.Cb#">$E11E$cSj%6P#">$E11a
">$>7]"1vFs8'>$'&."a&*-T<&?.F#${*S.*F.$-
&67P
• Foreground processC-">$E11A;q&'p&RS;&S%`&%R
'4&%/&#P
• Visible processC-">$E11A;q&'p&*-;7S;&ZsSJ!
&%R'4&~$ƒ;61E'~€A;;7S%`&@€P
• Service processC-E>ES;&S%`07P
• Background processC-">$E11A;q&'p&*-#;7A;aT$
Zs!&%R'4&~$$"E'~€A;;7S%`&@€P
• Empty process">$E11T<&aF]qN-"Q-$;EPE$
cSj%6YTQ-&67_8'>$'1vSj&TCC">$E11_
>%!C-#E*"7">$E11P

Vòng đời của Android Activity:
%SI&!6w>_87C--"QX6;>@&]-Sa&;
>yo>$&+,7'&q&'p&8'>$'PS?6-8'>$'X6.Cb
87E$'0&1;TT*j87*!S%`Tw0$_a1vS%`+c"C
SQ6A;1;T->w-running activity_#87>%!Sa1vFs0*'m&
-t$0Sj&>wC0T87*!S%`&."a&P
87F;$&W*u1;E
• active (running):87S;&Zs>*-Y~D$>E&>$6'€P
LM
• paused:87(Zs~1FCE€%&T<&Z%/&#~C$1
D$61€P‹*j;7*!+6]Zs&;$'SdC>
;7z_%&&;$'-7[/&;$'A;;7z_'$Sa
;(]7S%`N"Q&;$'A;;7z%&C0T<&Z
%/&#!aP
• stop:87Fs;7c$-$-Fw87*!1vcSc>0&
#stopP
• killed::J&Fsc6Fj!_a1v&."a&#c>YE$
&67n%6P#87w>0&#stop$kpausedz&a
ZFs&."a&-TaS%`ZsC0Y#87-7".Tw
Sj&C0$-$--"pWC0>0&#>%!SaP
LN
Hình 1.5- Biểu đồ miêu tả Activity state
y&SRA;87
• Entire lifetime:m"%/&qonCreate( )$!onDestroy( )
• Visible liftetime:m"%/&qonStart( )$!onStop( )
• Foreground lifetime:m"%/&qonResume( )$!onPause( )
:  +,7  '&  87  $  q&  'p&  Q  ".  c  C0  "%/&
qonCreate()SZX6#>YTw0$P#"%/&qT#aQ
cC0;7T<&47-$76Q6C^">YP
Các phương thức của vòng đời:

LL
Phương thức: onCreate()
 %`&@T;7CQSQ6S%`0$P
 •S,7F0C-*].#-Sk290$#E‡_TcJ'\C6Sc
C1–
 ƒ%/&q-7&=X6;*jSJ%`&36'CEq;S&m>0&#
>%!A;87P
 6<E$1;6Fw$;>~€P
Phương thức: onRestart()
 %`&@>%!T*j;7SIS%`'m&_t*jT$.&S;&Tw
Sj&CQ\;~1;>E';&;€P
 6<E$1;6Fw$;>~€P
Phương thức: onStart()
 %`&@>%!T*j;71FCE!&%R'4&P
 E$1;6Fw$E16*E~€c6;7Sc>0&#D$>E&>$6'$k
$$"~€_a>whP
Phương thức: onResume()
 %`&@>%!T;7FnSQ6%/&#!&%R'4&P
 0RSZ*-7;7w>StA;1;T;7P
 6<E$1;6Fw$ƒ;61E~€P
Phương thức: onPause()
 %`&@TJ&S;&>E16*&;7T#P
 ƒ%/&q-7C-SZY&\C0T<&Sl'\C6P
 aS%`'•>;*j#;a&FwY;7Tcc"1v
T<&S%`>E16*E'&;7$ScTa>wC0P
 E$1;6Fw$E16*E~€c6;7>w?mw>%!_$kFw$$"~€
c6a>w1FCE!&%R'4&P
 >0&#A;;7aZFs&cFwJ&P
Phương thức: onStop()
 %`&@T;7T<&6jQ*YA;&%R'4&P

 aaZ'•>;FwYaS;&FsA7_$kFwY;7T#m;
S%`>E16*E'-F;$"AaP
Lg
 %`E$1;6Fw$E1;>~€c;7S;&>wC0SZ%/&#!
&%R'4&_$k$‹E1>$7~€c6;7S;&F[P
 >0&#A;;7aZFs&cFwJ&P
Phương thức: onDestroy()
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• Các layout:
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 FrameLayout ;7$6S/&.]_Zs#-"Q$-$
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-"QP,7C-C;7$6S%`1='p&?6]P
 RelativeLayoutZs#-"Q$';>*JX6;!
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 TableLayoutZs#-"Q$';>*jC%!#<
&;&-'@P
 AbsoluteLayout:Zs#-"Q$';E$@;Sj+_7P
;7$6S%`1='p&{**pSocTc&;$'$?6Sj",
&.P%R&TC^">YTc`"?6C;7$6!;6SZ0$>;&;$'
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• Android Manifest
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Lu
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Z1='p&P
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