如何在android中动态设置透明颜色？比如10% ~ 20%到100%
如何在android中动态设置透明颜色？比如10% ~ 20%到100%
提问于 2018-05-28 19:29:47
100% — FF
95% — F2
90% — E6
85% — D9
80% — CC
75% — BF
70% — B3
65% — A6
60% — 99
55% — 8C
50% — 80
45% — 73
40% — 66
35% — 59
30% — 4D
25% — 40
20% — 33
15% — 26
10% — 1A
5% — 0D
0% — 00回答 2
Stack Overflow用户
发布于 2018-05-28 20:04:05
尝尝这个
//simple way to transparency set dynamicly any View
TextView tv = findViewById(R.id.tv);
String has = "#";
String PR_transparency = "50";// this text background color 50% transparent;
String og_color = "FF001A";
tv.setBackgroundColor(Color.parseColor(has+PR_transparency+og_color));Stack Overflow用户
发布于 2018-05-28 19:38:40
您可以创建Map，然后：
//Initial color
String color = "#bf6116";
//Create a map which hold percent and its corresponding String
Map<Integer, String> mapPercent = Map.of(100, "FF", 95, "F2", 10, "1A");
//user input, to explain I use a static variable
int userInput = 10;
if(mapPercent.containsKey(userInput)) {
//Use replaceFirst or subscring to put the corresponding String
color = color.replaceFirst(
"#(.*)", //the regex match # as group 1 and the rest as group 2
//put the corresponding string between the two groups
String.format("$0%s$1", mapPercent.get(userInput))
);
}
System.out.println(color);//result in this case is #1Abf6116注意：Map.of在Java10中，您可以使用普通的映射并将输入
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原文链接：
https://stackoverflow.com/questions/50565394
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