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最近的需求是实现添加购物车页面，展示规格的时候会出现显示不全，数据会自动剪切掉，后边重新自定义了FlowLayout问题得到解决，下面直接上代码
public class FlowLayoutView extends ViewGroup {
private final int DEFAULT_SPACING = 15;
private int horizontalSpacing = DEFAULT_SPACING;//水平间距
public FlowLayoutView(Context context) {
this(context, null);
}
public FlowLayoutView(Context context, AttributeSet attrs) {
this(context, attrs,0);
}
public FlowLayoutView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
//获取所有和自定义属性和样式
final TypedArray typedArray = context.getTheme().obtainStyledAttributes(attrs, R.styleable.FlowLayoutView, defStyleAttr, 0);
final int indexCount = typedArray.getIndexCount();
for (int i = 0; i < indexCount; i++) {
final int indexAttr = typedArray.getIndex(i);
switch (indexAttr) {
case R.styleable.FlowLayoutView_horizontalSpacing:
horizontalSpacing = typedArray.getInt(indexAttr,10);
break;
}
}
typedArray.recycle();
}
/**
* 设置子View直接的水平间距
* @param horizontalSpacing
*/
public void setHorizontalSpacing(int horizontalSpacing){
if(horizontalSpacing>0){
this.horizontalSpacing = horizontalSpacing;
}
}
private ArrayList<Line> lineList = new ArrayList<FlowLayoutView.Line>();
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
lineList.clear();
//1.获取FlowLayout的宽度
int width = MeasureSpec.getSize(widthMeasureSpec);
//2.计算用于实际比较的宽度，就是width减去左右的padding值
int noPaddingWidth = width - getPaddingLeft()- getPaddingRight();
//3.遍历所有的子TextView，在遍历过程中进行比较，进行分行操作
//创建一个行
//3.遍历所有的子TextView，进行分行操作
Line line = new Line();//只要不换行，始终都是同一个Line对象
for (int i = 0; i<getChildCount(); i++) {
//获取子TextView
View childView = getChildAt(i);
//引起view的onMeasure方法回调，从而保证后面的方法能够有值
childView.measure(0,0);
//4.如果当前line中 没有TextView，则直接放入当前Line中
if(line.getViewList().size()==0){
line.addLineView(childView);
}else if(line.getWidth()+horizontalSpacing+childView.getMeasuredWidth()>noPaddingWidth) {
//5.如果当前line的宽+水平间距+childView的宽大于noPaddingWidth，则换行
lineList.add(line);//先保存之前的line对象
line = new Line();//重新创建Line
line.addLineView(childView);//将chidlView放入新的Line
}else {
//6.如果小于noPaddingWidth，则将childView放入当前Line中
line.addLineView(childView);
}
//7.如果当前childView是最后一个，那么就会造成最后的一个Line对象丢失,
if(i==(getChildCount()-1)){
lineList.add(line);//保存最后的line对象
}
}
//for循环结束后，lineList就存放了所有的Line对象，而每个line中有记录自己的所有TextView
//为了能够垂直的摆放所有的Line的TextView，所以要给当前FlowLayout设置对应的宽高,
//计算所需要的高度：上下的padding + 所有line的高度 + 所有line之间的垂直间距
int height = getPaddingTop()+getPaddingBottom();
for (int i = 0; i < lineList.size(); i++) {
height += lineList.get(i).getHeight();
}
height += (lineList.size()-1)*verticalSpacing;
//向父View申请对应的宽高
setMeasuredDimension(width,height);
}
//行与行之间的垂直间距
private int verticalSpacing = 10;
/**
* 设置行与行之间的垂直间距
* @param verticalSpacing
*/
public void setVerticalSpacing(int verticalSpacing){
if(verticalSpacing>0){
this.verticalSpacing = verticalSpacing;
}
}
/**
* 摆放操作，让所有的子TextView摆放到指定的位置上面
*/
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int paddingLeft = getPaddingLeft();
int paddingTop = getPaddingTop();
for (int i = 0; i < lineList.size(); i++) {
Line line = lineList.get(i);//获取line对象
//从第二行开始，他们的top总是比上一行多一个行高+垂直间距
if(i>0){
paddingTop += lineList.get(i-1).getHeight()+verticalSpacing;
}
ArrayList<View> viewList = line.getViewList();//获取line所有的TextView
//1.计算出当前line的留白区域的值
int remainSpacing = getLineRemainSpacing(line);
//2.计算每个TextView分到多少留白
float perSpacing = remainSpacing/viewList.size();
for (int j = 0; j < viewList.size(); j++) {
View childView = viewList.get(j);//获取每个TextView
//3.将perSpacing增加到每个TextView的宽度上
int widthMeasureSpec = MeasureSpec.makeMeasureSpec((int) (childView.getMeasuredWidth()+perSpacing),MeasureSpec.EXACTLY);
childView.measure(widthMeasureSpec,0);
if(j==0){
//摆放每行的第一个TextView
childView.layout(paddingLeft,paddingTop,paddingLeft+childView.getMeasuredWidth()
,paddingTop+childView.getMeasuredHeight());
}else {
//摆放后面的TextView，需要参照前一个View
View preView = viewList.get(j-1);
int left = preView.getRight()+horizontalSpacing;
childView.layout(left,preView.getTop(),left+childView.getMeasuredWidth(),
preView.getBottom());
}
}
}
}
/**
* 获取line的留白区域
* @param line
* @return
*/
private int getLineRemainSpacing(Line line){
return getMeasuredWidth()-getPaddingLeft()-getPaddingRight()-line.getWidth();
}
/**
* 定义行对象，用来封装每行的所有TextView，以及宽和高
* @author Administrator
*
*/
class Line{
//用来记录当前行的所有TextView
private ArrayList<View> viewList = new ArrayList<View>();
//表示当前行所有TextView的宽，还有他们之间的水平间距
private int width;
//当前行的高度
private int height;
/**
* 获取当前Line中的所有TextView
* @return
*/
public ArrayList<View> getViewList() {
return viewList;
}
/**
* 获取当前Line的宽度
* @return
*/
public int getWidth() {
return width;
}
/**
* 获取当前Line的高度
* @return
*/
public int getHeight() {
return height;
}
/**
* 添加一个TextView到viewList中
* @param lineView
*/
public void addLineView(View lineView){
if(!viewList.contains(lineView)){
viewList.add(lineView);
//更新width
if(viewList.size()==1){
//如果是第一个TextView，那么width就是lineView的宽度
width = lineView.getMeasuredWidth();
}else {
//如果不是第一个，则要在当前width的基础上+水平间距+lineView的宽度
width += horizontalSpacing + lineView.getMeasuredWidth();
}
//更新height,在此所有的TextView的高度都是一样的
height = Math.max(height,lineView.getMeasuredHeight());
}
}
}
}
<com.xxxx.app.widget.FlowLayoutView
android:id="@+id/flowLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20px"
app:horizontal_spacing="20px"
app:vertical_spacing="20px" />最后实现图片：
即可。