2 android joker Android_joker 于 2016.03.25 14:09 提问

这种布局怎么解决...谢谢各位大神

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3个回答

gwpking
gwpking   2016.03.25 14:26

问题没说清楚,你要思路?代码

bdmh
bdmh   Ds   Rxr 2016.03.25 14:46

flowlayout,给你源码

 package com.jrj.tougu.views;

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

public class FlowLayout extends ViewGroup {
    private float mVerticalSpacing; //每个item纵向间距
    private float mHorizontalSpacing; //每个item横向间距

    public FlowLayout(Context context) {
        super(context);
    }
    public FlowLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public void setHorizontalSpacing(float pixelSize) {
        mHorizontalSpacing = pixelSize;
    }
    public void setVerticalSpacing(float pixelSize) {
        mVerticalSpacing = pixelSize;
    }
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int selfWidth = resolveSize(0, widthMeasureSpec);

        int paddingLeft = getPaddingLeft();
        int paddingTop = getPaddingTop();
        int paddingRight = getPaddingRight();
        int paddingBottom = getPaddingBottom();

        int childLeft = paddingLeft;
        int childTop = paddingTop;
        int lineHeight = 0;

        //通过计算每一个子控件的高度,得到自己的高度
        for (int i = 0, childCount = getChildCount(); i < childCount; ++i) {
            View childView = getChildAt(i);
            LayoutParams childLayoutParams = childView.getLayoutParams();
            childView.measure(
                    getChildMeasureSpec(widthMeasureSpec, paddingLeft + paddingRight,
                            childLayoutParams.width),
                    getChildMeasureSpec(heightMeasureSpec, paddingTop + paddingBottom,
                            childLayoutParams.height));
            int childWidth = childView.getMeasuredWidth();
            int childHeight = childView.getMeasuredHeight();

            lineHeight = Math.max(childHeight, lineHeight);

            if (childLeft + childWidth + paddingRight > selfWidth) {
                childLeft = paddingLeft+childWidth;
                childTop += mVerticalSpacing + lineHeight;
                lineHeight = childHeight;
            } else {
                childLeft += childWidth + mHorizontalSpacing;
            }
        }

        int wantedHeight = childTop + lineHeight + paddingBottom;
        setMeasuredDimension(selfWidth, resolveSize(wantedHeight, heightMeasureSpec));
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        int myWidth = r - l;

        int paddingLeft = getPaddingLeft();
        int paddingTop = getPaddingTop();
        int paddingRight = getPaddingRight();

        int childLeft = paddingLeft;
        int childTop = paddingTop;

        int lineHeight = 0;

        //根据子控件的宽高,计算子控件应该出现的位置。
        for (int i = 0, childCount = getChildCount(); i < childCount; ++i) {
            View childView = getChildAt(i);

            if (childView.getVisibility() == View.GONE) {
                continue;
            }

            int childWidth = childView.getMeasuredWidth();
            int childHeight = childView.getMeasuredHeight();

            lineHeight = Math.max(childHeight, lineHeight);

            if (childLeft + childWidth + paddingRight > myWidth) {
                childLeft = paddingLeft;
                childTop += mVerticalSpacing + lineHeight;
                lineHeight = childHeight;
            }
            childView.layout(childLeft, childTop, childLeft + childWidth, childTop + childHeight);
            childLeft += childWidth + mHorizontalSpacing;
        }
    }
}
Android_joker
Android_joker 谢谢分享
一年多之前 回复
u011113654
u011113654   2016.03.25 14:47
Android_joker
Android_joker 你太棒了
一年多之前 回复
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