[英]Draw Multiple Circles horizontally android
How to draw multiple circles horizontally in android, with some filled color. 如何在Android中水平绘制多个填充颜色的圆形。
And I want to change the color based on some server response. 我想根据一些服务器响应来更改颜色。
Can anybody tell how to do this? 谁能告诉我该怎么做? I implemented like this to draw a circle.
我这样实现画一个圆。
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
public class SampleView extends View
{
public SampleView(Context context)
{
super(context);
// TODO Auto-generated constructor stub
}
@Override
protected void onDraw(Canvas canvas)
{
Paint mPaint = new Paint();
mPaint.setColor(Color.RED);
mPaint.setStyle(Paint.Style.FILL);
canvas.drawCircle(30, 30, 10, mPaint);
}
}
I'm not able to get how to draw three more circles in the same line. 我不知道如何在同一条直线上再画三个圆。
And how to change the color based on condition if I write like this. 以及如何根据情况更改颜色(如果我这样写的话)。
You can choose two option, either have multiple view, each having a single circle or draw multiple circle in a single view. 您可以选择两个选项,要么具有多个视图,每个视图具有一个圆圈,要么在单个视图中绘制多个圆圈。 I'd prefer the first option, but since your need may vary, so I am explaining both the option.
我更喜欢第一种选择,但是由于您的需求可能会有所不同,因此我将同时解释这两种选择。
Option 1: 选项1:
Have a class variable named as color, which can work as a property where you can change the color based on default color of the view. 有一个名为color的类变量,可以用作属性,在其中您可以根据视图的默认颜色更改颜色。 Run a loop outside the view, may be in onCreate() to increament x coordinate, which can be passed to the
drawCircle()
method. 在视图外运行循环,可能在onCreate()中使x坐标保持不变,可以将其传递给
drawCircle()
方法。
Option 2 选项2
You can have an ArrayList of color for every circle. 每个圆都可以有一个颜色的ArrayList。 Run a loop in
onDraw()
method, which changes the color and increment the x coordinate based on loop counter. 在
onDraw()
方法中运行一个循环,该循环根据循环计数器更改颜色并增加x坐标。
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