动态生成radiobutton超出本行后自动换行实现

1、自定义的RadioGroup类

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);
            }
        }
    }
}

2、布局中插入上面自定义的Class

3、动态生成

 radioGroup = (RadioGroup) findViewById(R.id.radioGroup);

        for (int i = 0; i < 10; i++) {
            RadioButton radioButton = new RadioButton(this);
            RadioGroup.LayoutParams lp = new RadioGroup.LayoutParams(RadioGroup.LayoutParams.WRAP_CONTENT, RadioGroup.LayoutParams.WRAP_CONTENT);
            //设置RadioButton边距 (int left, int top, int right, int bottom)
            lp.setMargins(15,0,0,0);
            //设置RadioButton背景
            //radioButton.setBackgroundResource(R.drawable.xx);
            //设置RadioButton的样式
            radioButton.setButtonDrawable(R.drawable.radio_bg);
            //设置文字距离四周的距离
            radioButton.setPadding(80, 0, 0, 0);
            //设置文字
            radioButton.setText("this is radioButton  " + i);
            final int finalI = i;
            //设置radioButton的点击事件
            radioButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Toast.makeText(MainActivity.this, "this is radioButton  " + finalI, Toast.LENGTH_SHORT).show();
                }
            });
            //将radioButton添加到radioGroup中
            radioGroup.addView(radioButton,lp);