android 自动换行布局

此方法是固定每行居中

使用android:paddingLeft="@dimen/margin_common_10"android:paddingRight="@dimen/margin_common_15"进行调整左右间距

import android.content.Context;import android.util.AttributeSet;import android.view.View;import android.view.ViewGroup;public class FlexBoxLayout extends ViewGroup {    /**     * 居中换行     */    public int foxheight= 5;//换行H间隙    public FlexBoxLayout(Context context) {        this(context, null);    }    public FlexBoxLayout(Context context, AttributeSet attrs) {        super(context, attrs);    }    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int maxWidth = MeasureSpec.getSize(widthMeasureSpec);        int childCount = getChildCount();        int x = 0,y = 0,row = 0,ih=0;        for(int i = 0; iih)            {                ih = getChildAt(i).getMeasuredHeight();            }        }        for (int index = 0; index < childCount; index++) {            final View child = this.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 = ih;                x += width;                y = row * height + height;                if (x > maxWidth) {                    x = width;                    row++;                    ih = ih+foxheight;                    height = ih;                    y = row * (height) + height;                }            }        }        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,y = 0,row = 0,ih=0;        for(int i = 0; iih)            {                ih = getChildAt(i).getMeasuredHeight();            }        }        for (int i = 0; i < childCount; i++) {            final View child = this.getChildAt(i);            if (child.getVisibility() != View.GONE ) {                int width = child.getMeasuredWidth();                int height = ih;                x += width;                y = row * height + height;                if (x > maxWidth) {                    x = width;                    row++;                    ih = ih+foxheight;                    height = ih;                    y = row * (height) + height;                }                if( child.getMeasuredHeight()< ih)                {                    child.layout((x - width) + getPaddingLeft(), (y - height)+(ih-child.getMeasuredHeight())/2 ,                            x- + getPaddingRight(), y-(ih-child.getMeasuredHeight())/2);                }else{                    child.layout((x - width) + getPaddingLeft(),  y - height, x + getPaddingRight(), y);                }            }        }    }}

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