流式布局ViewGroup

package com.example.lianxizhoukao;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;

public class SerView extends ViewGroup {
public SerView(Context context) {
super(context);
}

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

public SerView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    measureChildren(widthMeasureSpec, heightMeasureSpec);
}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    int witth = getWidth();
    int low = 0;
    int diswith = 18;//定义行间距
    for (int i = 0; i < getChildCount(); i++) {
        View child = getChildAt(i);
        int widt = child.getMeasuredWidth();
        int height = child.getMeasuredHeight();
        if (diswith + widt > witth) {
            low++;
            diswith = 18;
        }
        child.layout(diswith, low * height, diswith + widt, height * (low + 1));
        diswith += widt;
    }
}

}

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转载自blog.csdn.net/weixin_44660509/article/details/88935696