Android(安卓)自动换行流式布局的RadioGroup
16lz
2022-05-25
效果图
用法
使用FlowRadioGroup代替RadioGroup
代码
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); } } }}
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