關於流佈局的修改

package net.greatsoft.main.view;

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

public class AutoLinefeedLayout extends ViewGroup {

    int maxLineHight;


    public AutoLinefeedLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public AutoLinefeedLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public AutoLinefeedLayout(Context context) {
        this(context, null);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        layoutHorizontal();
    }

    private void layoutHorizontal() {
        final int count = getChildCount();
        final int lineWidth = getMeasuredWidth() - getPaddingLeft()
                - getPaddingRight();
        int paddingTop = getPaddingTop();
        int childTop = 0;
        int childLeft = getPaddingLeft();

        int availableLineWidth = lineWidth;
        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child == null) {
                continue;
            } else if (child.getVisibility() != GONE) {
                final int childWidth = child.getMeasuredWidth();
                final int childHeight = child.getMeasuredHeight();

                if (availableLineWidth < childWidth) {
                    availableLineWidth = lineWidth;
                    paddingTop = paddingTop + maxLineHight;
                    childLeft = getPaddingLeft();
                    maxLineHight = 0;
                }

                childTop = paddingTop;
                setChildFrame(child, childLeft, childTop, childWidth,
                        childHeight);
                childLeft += childWidth;
                availableLineWidth = availableLineWidth - childWidth;
                maxLineHight = Math.max(maxLineHight, childHeight);
            }
        }
    }

    private void setChildFrame(View child, int left, int top, int width,
                               int height) {
        child.layout(left, top, left + width, top + height);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            measureChild(getChildAt(i), widthMeasureSpec, heightMeasureSpec);
        }
        if (heightMode == MeasureSpec.AT_MOST||heightMode == MeasureSpec.UNSPECIFIED) {
            final int width = MeasureSpec.getSize(widthMeasureSpec);
            super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(
                    getDesiredHeight(width), MeasureSpec.EXACTLY));
        } else {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }

    }

    private int getDesiredHeight(int width) {
        final int lineWidth = width - getPaddingLeft() - getPaddingRight();
        int availableLineWidth = lineWidth;
        int totalHeight = getPaddingTop() + getPaddingBottom();
        int lineHeight = 0;
        for (int i = 0; i < getChildCount(); i++) {
            final View child = getChildAt(i);
            if (child == null) {
                continue;
            } else if (child.getVisibility() == GONE) {
                continue;
            }
            final int childWidth = child.getMeasuredWidth();
            final int childHeight = child.getMeasuredHeight();
            if (availableLineWidth < childWidth) {
                availableLineWidth = lineWidth;
                totalHeight = totalHeight + lineHeight;
                lineHeight = 0;
            }
            availableLineWidth = availableLineWidth - childWidth;
            lineHeight = Math.max(childHeight, lineHeight);
        }
        totalHeight = totalHeight+lineHeight;
        return totalHeight;
    }

}

從網上找到了個流佈局， 可是在Dialog的使用中， 若是有控件設置了隱藏的話， 就略顯不足，原本使用了GridLayout  使用起來太麻煩，有時候由於機器的sdk 不一樣還會展現出不一樣的效果。因此仍是使用這個吧。主要緣由就是在高度的計算問題上。