zoukankan      html  css  js  c++  java
  • Android 自动换行流式布局的RadioGroup

    用法

    使用FlowRadioGroup代替RadioGroup

    import android.content.Context;
    import android.util.AttributeSet;
    import android.view.View;
    import android.widget.RadioGroup;
    
    /**
     * 流式布局的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);
                }
            }
        }
    }
  • 相关阅读:
    各種語系的unicode對應以及local編碼方式
    测试邮箱采集
    devexpress控件例子
    2015结束,2016开始
    MYSQL 导出表结构
    mysql 远程访问
    jQuery的选择器中的通配符[id^='code']
    jquery判断checkbox是否选中及改变checkbox状态
    MYSQL 删除重复记录,只保留最大ID
    java.lang.IllegalArgumentException: Comparison method violates its general contract!
  • 原文地址:https://www.cnblogs.com/zhujiabin/p/6033412.html
Copyright © 2011-2022 走看看