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This article is about the sample analysis of Android color in XML files and java code. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

1. Use constants of the Color class, such as:

Int color = Color.BLUE;// create a blue using the color provided by Android int color = Color.RED; int color = Color.WHITE

2. Build through ARGB, such as:

Int color = Color.argb (127,255,0,255); / / translucent purple where the first parameter is transparent, 0 is completely transparent, and 255th (ff) is completely opaque; the last three bits represent the value of RGB, respectively.

3. Use XML resource files to define colors

This method has good scalability and is easy to modify and share, such as creating a color.xml under the values directory:

# 7fff00ff

Defines a color called mycolor, which can be obtained elsewhere by referencing mycolor, as shown in

In the textView definition:

Android:textColor= "@ drawable/mycolor"

You can use getColor in the ResourceManager class in the Java code to get the color:

Int color = getResources () .getColor (R.color.mycolor)

This is the same as the value obtained by the second method, where the getResources () method returns the ResourceManager class instance of the currently active Activity.

Note: the XML definition method accepts 6-bit and 8-bit representations, and it must begin with #. The first two bits of the 8-bit definition are transparent. (for simplicity, it can also be abbreviated), for example:

# f00#0000ff#f0f0#ffffff00

4. Define color values directly, such as:

Int color = 0xff00ff00

This method must start with 0x instead of using our usual #. Unlike method 3, values must also be represented in 8 bits and do not accept 6-bit colors. Group 0x | ff | ff00ff,0x is a marker for color integers, ff for transparency, and ff00ff for RGB color values.

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