Table of contents
1. Transparency comparison table
2. Introduction to transparency
1. Transparency comparison table
Note: 00 is completely transparent, FF is completely opaque
Our UI girl likes to give "opacity" . This needs to be judged by yourself.
完全透明:0% HEX: 00
透明度:1% HEX: 30
透明度:2% HEX: 50
透明度:3% HEX: 80
透明度:4% HEX: A0
透明度:5% HEX: D0
透明度:6% HEX: F0
透明度:7% HEX: 12
透明度:8% HEX: 14
透明度:9% HEX: 17
透明度:10% HEX: 1A
透明度:11% HEX: 1C
透明度:12% HEX: 1F
透明度:13% HEX: 21
透明度:14% HEX: 24
透明度:15% HEX: 26
透明度:16% HEX: 29
透明度:17% HEX: 2B
透明度:18% HEX: 2E
透明度:19% HEX: 30
透明度:20% HEX: 33
透明度:21% HEX: 36
透明度:22% HEX: 38
透明度:23% HEX: 3B
透明度:24% HEX: 3D
透明度:25% HEX: 40
透明度:26% HEX: 42
透明度:27% HEX: 45
透明度:28% HEX: 47
透明度:29% HEX: 4A
透明度:30% HEX: 4D
透明度:31% HEX: 4F
透明度:32% HEX: 52
透明度:33% HEX: 54
透明度:34% HEX: 57
透明度:35% HEX: 59
透明度:36% HEX: 5C
透明度:37% HEX: 5E
透明度:38% HEX: 61
透明度:39% HEX: 63
透明度:40% HEX: 66
透明度:41% HEX: 69
透明度:42% HEX: 6B
透明度:43% HEX: 6E
透明度:44% HEX: 70
透明度:45% HEX: 73
透明度:46% HEX: 75
透明度:47% HEX: 78
透明度:48% HEX: 7A
透明度:49% HEX: 7D
透明度:50% HEX: 80
透明度:51% HEX: 82
透明度:52% HEX: 85
透明度:53% HEX: 87
透明度:54% HEX: 8A
透明度:55% HEX: 8C
透明度:56% HEX: 8F
透明度:57% HEX: 91
透明度:58% HEX: 94
透明度:59% HEX: 96
透明度:60% HEX: 99
透明度:61% HEX: 9C
透明度:62% HEX: 9E
透明度:63% HEX: A1
透明度:64% HEX: A3
透明度:65% HEX: A6
透明度:66% HEX: A8
透明度:67% HEX: AB
透明度:68% HEX: AD
透明度:69% HEX: B0
透明度:70% HEX: B3
透明度:71% HEX: B5
透明度:72% HEX: B8
透明度:73% HEX: BA
透明度:74% HEX: BD
透明度:75% HEX: BF
透明度:76% HEX: C2
透明度:77% HEX: C4
透明度:78% HEX: C7
透明度:79% HEX: C9
透明度:80% HEX: CC
透明度:81% HEX: CF
透明度:82% HEX: D1
透明度:83% HEX: D4
透明度:84% HEX: D6
透明度:85% HEX: D9
透明度:86% HEX: DB
透明度:87% HEX: DE
透明度:88% HEX: E0
透明度:89% HEX: E3
透明度:90% HEX: E6
透明度:91% HEX: E8
透明度:92% HEX: EB
透明度:93% HEX: ED
透明度:94% HEX: F0
透明度:95% HEX: F2
透明度:96% HEX: F5
透明度:97% HEX: F7
透明度:98% HEX: FA
透明度:99% HEX: FC
不透明:100% HEX: FF
2. Introduction to transparency
Color values in Android usually follow the RGB/ARGB standard. When used, they usually start with the "#" character and are expressed in hexadecimal.
The general format of color values in Android is: #AARRGGBB.
Transparency is divided into 256 levels, namely 0~255, 00 means completely transparent, and FF means completely opaque.
Note:
Transparency 0 (transparent) –> 255 (opaque)Hexadecimal 00 (transparent)–> FF (opaque)
For example: 50% transparency, 50% is half of 256, which is 128. Because it starts from 0, it is 127. When converted to hexadecimal, it is 7F.
3. Transparency setting
3.1 xml settings
<!-- 整个布局添加透明度 -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/ll_root"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:alpha="0.6"
android:orientation="vertical">
</LinearLayout>
<!-- 带个控件加透明度 -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/str_sleep"
android:textColor="@color/color_333333"
android:alpha="0.6"
android:textSize="@dimen/sp_24" />
You can also set the font color or background color to achieve the desired effect.
3.2 Code settings
tvName.setAlpha(isAccountsCancel?1:0.6f);//float:0(完全透明)~1(不透明)
tvName.getBackground().setAlpha(255);//int:0(完全透明)~255(不透明)