[英]How do I pass the value of an array to another class?
我正在尝试将另一个类中的颜色的数组值传递给Android Studio中的FunFactsActivity。 现在,我遇到一个错误
setBackgroundColor(int) in View cannot be applied to (java.lang.String).
relativeLayout.setBackgroundColor(mColorWheel.mColors[currentColor]);
据我了解,我无法将int传递给它,因为它是String,但是我只是想使该数组中已有的颜色每隔几秒/间隔就淡入线程中的relativeLayout背景,并且无法做到正确。 我究竟做错了什么?
FunFactsActivity.java
// update background color of relativeLayout every few seconds.
private void updateColor()
{
final RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
int color = mColorWheel.getColor();
runOnUiThread(new Runnable()
{
@Override
public void run()
{
if (currentColor > mColorWheel.mColors.length - 1)
{
currentColor = 0;
}
relativeLayout.setBackgroundColor(mColorWheel.mColors[currentColor]);
currentColor++;
}// end of run
});
}
ColorWheel.java
public class ColorWheel {
// Member variable (properties about the object)
public String[] mColors = {
"#39add1",
"#3079ab",
"#c25975",
"#e15258",
"#f9845b",
"#838cc7",
"#7d669e",
"#53bbb4",
"#e0ab18",
"#637a91",
"#f092b0",
"#b7c0c7",
"#FAEBD7",
"#00FFFF",
"#7FFFD4",
"#0000FF",
"#8A2BE2",
"#A52A2A",
"#DEB887",
"#5F9EA0",
"#7FFF00",
"#D2691E",
"#6495ED",
"#DC143C",
"#B8860B",
"#A9A9A9",
"#006400",
"#FF8C00",
"#8B0000",
"#FFD700",
"#FF69B4",
"#4B0082",
"#F08080",
"#90EE90",
"#87CEFA",
"#FF4500",
"#DA70D6",
"#FA8072",
"#9ACD32",
"#00FF7F",
"#4682B4",
};
// Method (abilities: things the object can do)
public int getColor(){
String color = "";
// Randomly select a fact
Random randomGenerator = new Random(); // Construct a new Random number generator
int randomNumber = randomGenerator.nextInt(mColors.length);
color = mColors[randomNumber];
int colorAsInt = Color.parseColor(color);
return colorAsInt;
}
}
您的ColorWheel
类已经在getColor
函数中调用Color.parseColor
。 只需使用该功能,因为它已经获得了随机的颜色。
relativeLayout.setBackgroundColor(mColorWheel.getColor());
或者,如果您想使用mColors数组:
relativeLayout.setBackgroundColor(Color.parseColor(mColorWheel.mColors[currentColor]));
没有遍历整个代码,但是在Android中设置颜色时,您可以:
int
,例如: R.color.my_red
Color
对象。 在您的情况下,如果要将十六进制值转换为Color
,请调用Color.parseColor("#000000")
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