radiobutton超出本行后自动换行实现

我们在开发的过程中,很多地方会使用到radioGroup和radioButton,但是默认的radioGroup只支持横排或者竖排,如果使用横排,有时候会出现一排显示不全的问题,界面显得很难看,本来应该显示成这样的:

结果显示成这样了
radiobutton超出本行后自动换行实现_第1张图片

发现很难看,处理方法如下,重写radioGroup

public class FlowRadioGroup extends RadioGroup {

    public FlowRadioGroup(Context context) {
        super(context);
    }

    public FlowRadioGroup(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int maxWidth = MeasureSpec.getSize(widthMeasureSpec);
        int childCount = getChildCount();
        int x = 0;
        int y = 0;
        int row = 0;

        for (int index = 0; index < childCount; index++) {
            final View child = getChildAt(index);
            if (child.getVisibility() != View.GONE) {
                child.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
                // 此处增加onlayout中的换行判断,用于计算所需的高度
                int width = child.getMeasuredWidth();
                int height = child.getMeasuredHeight();
                x += width;
                y = row * height + height;
                if (x > maxWidth) {
                    x = width;
                    row++;
                    y = row * height + height;
                }
            }
        }
        // 设置容器所需的宽度和高度
        setMeasuredDimension(maxWidth, y);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        final int childCount = getChildCount();
        int maxWidth = r - l;
        int x = 0;
        int y = 0;
        int row = 0;
        for (int i = 0; i < childCount; i++) {
            final View child = this.getChildAt(i);
            if (child.getVisibility() != View.GONE) {
                int width = child.getMeasuredWidth();
                int height = child.getMeasuredHeight();
                x += width;
                y = row * height + height;
                if (x > maxWidth) {
                    x = width;
                    row++;
                    y = row * height + height;
                }
                child.layout(x - width, y - height, x, y);
            }
        }
    }
}

布局里面直接把RadioGroup改成FlowRadioGroup就能使用,如下图:

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