Android自定义View实现拖动选择按钮
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2021-01-20
10:17:07
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Android自定义自定义View实现拖动选择按钮实现拖动选择按钮
本文为大家分享了Android实现拖动选择按钮的具体代码，供大家参考，具体内容如下
效果图效果图
View代码代码
第一步：第一步：自定义属性
<declare-styleable name="DragView">
<attr name="icon_drag" format="reference"/>
<attr name="color_circle" format="color"/>
<attr name="dot_num" format="integer"/>
</declare-styleable>
第二步：第二步：自定义圆形
public class CircleView extends View {
/**
* 默认颜色
*/
private final int DEFAULT_COLOR = Color.LTGRAY;
/**
* 默认半径dp
*/
private final float DEFAULT_RADIUS = 32;
private int mColor;
private Paint mCirclePaint;
private float mRadius;
private float mCenterX;
private float mCenterY;
public CircleView(Context context)
{
this(context, null);
}
public CircleView(Context context, AttributeSet attrs)
{
this(context, attrs, 0);
}
public CircleView(Context context, AttributeSet attrs, int defStyleAttr)
{
super(context, attrs, defStyleAttr);
TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.DragView);
mColor = array.getColor(R.styleable.DragView_color_circle,DEFAULT_COLOR);
mCirclePaint = new Paint();
mCirclePaint.setColor(mColor);
mCenterY = mCenterX = mRadius = getMeasuredWidth() == 0?DEFAULT_RADIUS:getMeasuredWidth()/2;
array.recycle();
}
public float getRadius(){
return mRadius;
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