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How to make a background 20% transparent on Android

How do I make the background of a Textview about 20% transparent (not fully transparent), where there is a color in the background (i.e. white)? ...
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How to round an average to 2 decimal places in PostgreSQL?

...For example: regress=> SELECT to_char(float8 '3.1415927', 'FM999999999.00'); to_char --------------- 3.14 (1 row) to_char will round numbers for you as part of formatting. The FM prefix tells to_char that you don't want any padding with leading spaces. ...
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Java associative-array

...<Map<String, String>> data = new ArrayList<>(); data.add(0, map); data.get(0).get("name"); See the official documentation for more information share | improve this answer ...
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How does python numpy.where() work?

... 10 Just to point out that numpy.where do have 2 'operational modes', first one returns the indices, where condition is True and if optional par...
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Why doesn't String switch statement support a null case?

...m.ordinal(). The [...] ordinals start at zero. That means, mapping null to 0 wouldn't be a good idea. A switch on the first enum value would be indistinguishible from null. Maybe it would've been a good idea to start counting the ordinals for enums at 1. However it hasn't been defined like that, and...
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How to set the font style to bold, italic and underlined in an Android TextView?

... edited May 23 '17 at 12:10 Community♦ 111 silver badge answered Jan 7 '11 at 7:59 ...
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How to get a Color from hexadecimal Color String

I'd like to use a color from an hexa string such as "#FFFF0000" to (say) change the background color of a Layout. Color.HSVToColor looks like a winner but it takes a float[] as a parameter. ...
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How to Truncate a string in PHP to the word closest to a certain number of characters?

...hort sentence or two; but for this widget I can't display more than, say, 200 characters. I could use substr() to chop off the text at 200 chars, but the result would be cutting off in the middle of words-- what I really want is to chop the text at the end of the last word before 200 chars. ...
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Precise Financial Calculation in JavaScript. What Are the Gotchas?

... 109 You should probably scale your decimal values by 100, and represent all the monetary values in ...
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Convert base-2 binary number string to int

...ser_name 29.3k3939 gold badges113113 silver badges180180 bronze badges answered Jan 19 '12 at 15:02 unwindunwind 353k5959 gold bad...