Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
談談 Android constraint layout
Search
Johnny Sung
July 01, 2019
Programming
0
110
談談 Android constraint layout
談談 Android layout 系統與 ConstraintLayout
Johnny Sung
July 01, 2019
Tweet
Share
More Decks by Johnny Sung
See All by Johnny Sung
Kubernetes 地端自建 v.s. GKE,哪個更適合你? @Devfest Taipei 2024
j796160836
0
27
地端自建 Kubernetes (K8s) 小宇宙 (On-premises Kubernetes) @ CNTUG 2024/11 Meetup #63
j796160836
0
22
[AI LLM] Gemma 初體驗 @ GDG Cloud Taipei Meetup #70
j796160836
0
18
ArgoCD 的雷 碰過的人就知道 @TSMC IT Community Meetup #4
j796160836
0
62
使用 Kong 與 GitOps 來管理您企業的 API 呼叫 @ 2024 台灣雲端大會
j796160836
0
57
[AI / ML] 用 LLM (Large language model) 來整理您的知識庫 @ Devfest Taipei 2023
j796160836
0
170
[Flutter] Flutter Provider 看似簡單卻又不簡單的狀態管理工具
j796160836
0
27
[Golang] 以 Mobile App 工程師視角,帶你進入 Golang 的世界 (Introduction of GoLang)
j796160836
0
52
[Flutter] 來體驗 bloc 小方塊的神奇魔法 @Devfest 2022
j796160836
0
240
Other Decks in Programming
See All in Programming
大LLM時代にこの先生きのこるには-ITエンジニア編
fumiyakume
7
3.1k
API for docs
soutaro
2
1.4k
VitestのIn-Source Testingが便利
taro28
7
2.2k
AHC045_解説
shun_pi
0
560
Laravel × Clean Architecture
bumptakayuki
PRO
0
110
State of Namespace
tagomoris
4
1.9k
七輪ライブラリー: Claude AI で作る Next.js アプリ
suneo3476
1
120
Bedrock×MCPで社内ブログ執筆文化を育てたい!
har1101
6
1.1k
AWS で実現する安全な AI エージェントの作り方 〜 Bedrock Engineer の実装例を添えて 〜 / how-to-build-secure-ai-agents
gawa
8
850
スモールスタートで始めるためのLambda×モノリス(Lambdalith)
akihisaikeda
2
290
Golangci-lint v2爆誕: 君たちはどうすべきか
logica0419
1
140
Contribute to Comunities | React Tokyo Meetup #4 LT
sasagar
0
530
Featured
See All Featured
A better future with KSS
kneath
239
17k
Documentation Writing (for coders)
carmenintech
69
4.7k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
47
5.3k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
26k
Large-scale JavaScript Application Architecture
addyosmani
512
110k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
It's Worth the Effort
3n
184
28k
Faster Mobile Websites
deanohume
306
31k
Testing 201, or: Great Expectations
jmmastey
42
7.5k
Code Reviewing Like a Champion
maltzj
522
40k
RailsConf 2023
tenderlove
30
1.1k
Transcript
ႇႇ$POTUSBJOU-BZPVU Johnny Sung
+0)//:46/( Mobile Device developer https://fb.com/j796160836 https://blog.jks.coffee/ https://www.slideshare.net/j796160836 https://github.com/j796160836
-":065 • LinearLayout • FrameLayout • RelativeLayout • ConstraintLayout
-*/&"3-":065 線性布局 <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <View android:layout_width="match_parent" android:layout_height="wrap_content"/> <View
android:layout_width="match_parent" android:layout_height="wrap_content"/> <View android:layout_width="match_parent" android:layout_height="wrap_content"/> </LinearLayout>
<FrameLayout android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="150sp" android:text="T"/> <TextView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:textSize="200sp" android:text="A"/> </FrameLayout> '3".&-":065 框架布局
3&-"5*7&-":065 相對布局 http://fiend1120.pixnet.net/blog/post/191809863 android:layout_above 將此元件置於"指定元件"(使⽤用元件id指定)上⽅方. android:layout_below 將此元件置於"指定元件"(使⽤用元件id指定)下⽅方. android:layout_toLeftOf 將此元件置於"指定元件"(使⽤用元件id指定)左⽅方. android:layout_toRightOf
將此元件置於"指定元件"(使⽤用元件id指定)右⽅方.
3&-"5*7&-":065 相對布局 http://fiend1120.pixnet.net/blog/post/191809863 android:layout_alignParentTop 將此元件對⿑齊於佈局畫⾯面上邊線 android:layout_alignParentRight 將此元件對⿑齊於佈局畫⾯面右邊線 android:layout_alignParentLeft 將此元件對⿑齊於佈局畫⾯面左邊線 android:layout_alignParentBottom
將此元件對⿑齊於佈局畫⾯面底線 android:layout_centerHorizontal 將該元件⽔水平居中於整個布局畫⾯面 android:layout_centerVertical 將該元件垂直居中於整個布局畫⾯面 android:layout_centerInParent 將該元件⽔水平及垂直均居中於整個布局畫⾯面
3&-"5*7&-":065 相對布局 <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <View android:id="@+id/view1" android:layout_width="match_parent" android:layout_height="wrap_content"/> <View
android:id="@+id/view2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@id/view1"/> <View android:id="@+id/view3" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@id/view2"/> </RelativeLayout>
A ConstraintLayout is a ViewGroup which allows you to position
and size widgets in a flexible way.
*/45"--"5*0/ dependencies { // ... implementation 'com.android.support.constraint:constraint-layout:1.1.3' } Add constraint-layout
to gradle 安裝
-":0651"3".4 佈局參參數 • app:layout_constraintLeft_toLeftOf • app:layout_constraintStart_toStartOf • app:layout_constraintRight_toRightOf • app:layout_constraintEnd_toEndOf
• app:layout_constraintTop_toTopOf • app:layout_constraintBottom_toBottomOf • ...
• layout_constraintLeft_toLeftOf • layout_constraintLeft_toRightOf • layout_constraintRight_toLeftOf • layout_constraintRight_toRightOf • layout_constraintTop_toTopOf
• layout_constraintTop_toBottomOf • layout_constraintBottom_toTopOf -":0651"3".4 佈局參參數 • layout_constraintBottom_toBottomOf • layout_constraintBaseline_toBaselineOf • layout_constraintStart_toEndOf • layout_constraintStart_toStartOf • layout_constraintEnd_toStartOf • layout_constraintEnd_toEndOf
語法格式 (⾃自⼰己) 的 (⽅方位) 在 (⽬目標) 的 (⽅方位)
(⾃自⼰己) 的上⽅方在⽗父親的上⽅方 語法格式 app:layout_constraintTop_toTopOf="parent" 靠上
-":0651"3".4 佈局參參數 android:layout_alignParentLeft="true" android:layout_alignParentStart="true" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintEnd_toEndOf="parent" android:layout_alignParentRight="true" android:layout_alignParentEnd="true"
3&-"5*7&-":065 $0/453"*/5-":065
-":0651"3".4 佈局參參數 android:layout_alignParentTop="true" app:layout_constraintTop_toTopOf="parent" app:layout_constraintBottom_toBottomOf="parent" android:layout_alignParentBottom="true" 3&-"5*7&-":065 $0/453"*/5-":065
-":0651"3".4 佈局參參數 android:layout_centerVertical="true" android:layout_width="wrap_content" app:layout_constraintTop_toTopOf="parent" app:layout_constraintBottom_toBottomOf="parent" android:layout_height="wrap_content" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintRight_toRightOf="parent"
app:layout_constraintEnd_toEndOf="parent" android:layout_centerHorizontal="true" 3&-"5*7&-":065 $0/453"*/5-":065
-":0651"3".4 佈局參參數 android:layout_toLeftOf="@id/viewA" android:layout_toStartOf="@+id/viewA" app:layout_constraintRight_toLeftOf="@id/viewA" app:layout_constraintEnd_toStartOf="@id/viewA" app:layout_constraintLeft_toRightOf="@id/viewA" app:layout_constraintStart_toEndOf="@id/viewA" android:layout_toRightOf="@id/viewA" android:layout_toEndOf="@id/viewA"
3&-"5*7&-":065 $0/453"*/5-":065 A A (在...的左邊) (在...的右邊) (在...的左邊) (在...的右邊) A A
-":0651"3".4 佈局參參數 android:layout_below="@+id/viewA" app:layout_constraintTop_toBottomOf="@id/view" app:layout_constraintBottom_toTopOf="@id/viewA" android:layout_above="@id/viewA" 3&-"5*7&-":065 $0/453"*/5-":065 A A
A A (在...的下⽅方) (在...的上⽅方) (在...的下⽅方) (在...的上⽅方)
• android:layout_marginStart • android:layout_marginEnd • android:layout_marginLeft • android:layout_marginTop • android:layout_marginRight
• android:layout_marginBottom • layout_goneMarginStart • layout_goneMarginEnd • layout_goneMarginLeft • layout_goneMarginTop • layout_goneMarginRight • layout_goneMarginBottom ."3(*/4 間距參參數
• MATCH_PARENT ❌ • Specific dimension 指定數字(例例如: 25dp ) •
WRAP_CONTENT • 0dp (MATCH_CONSTRAINT)
$)*"/*/(
None
None
• layout_constraintHorizontal_bias • layout_constraintVertical_bias #*"4 偏移度
<android.support.constraint.Guideline android:id="@+id/guideline_hoz_center" android:layout_width="0dp" android:layout_height="0dp" android:orientation="vertical" app:layout_constraintGuide_percent="0.3" /> (6*%&-*/& 參參考線
%&.0
https://developer.android.com/reference/android/support/constraint/ConstraintLayout https://blog.csdn.net/guolin_blog/article/details/53122387 https://medium.com/verybuy-dev/android- %E8%A3%A1%E7%9A%84%E7%B4%84%E6%9D%9F%E6%80%96%E5%B1%80- constraintlayout-6225227945ab https://constraintlayout.com/ 3&'&3&/$&4 參參考資料 http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2017/1019/8618.html
26&45*0/4