场景一:
private void initviewdatea(LinearLayout ll_vertical) {
int temp = 0;
// 获取xml的RelativeLayout
for (int i = 0; i < home_detailss.size(); i++) {
// 每行都有一个linearlayout
LinearLayout lLayout = new LinearLayout(CapteDetailsActionsActivity.this);
lLayout.setId(i + 10);
lLayout.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams lLayoutlayoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
lLayout.setLayoutParams(lLayoutlayoutParams);
TextView tv = new TextView(CapteDetailsActionsActivity.this);
tv.setId(i);
if (temp < home_detailss.size()) {
tv.setTextSize(12);
tv.setText(home_detailss.get(temp).toString());
tv.setTextColor(Color.GRAY);
temp = temp + 1;
}
TextView tv_num = new TextView(CapteDetailsActionsActivity.this);
tv_num.setId(i + 20);
if (temp < home_detailss.size()) {
tv_num.setTextSize(12);
tv_num.setText(home_detailss.get(temp).toString());
tv_num.setTextColor(Color.GRAY);
temp = temp + 1;
}
// 为TextView添加长高设置
LinearLayout.LayoutParams layoutParams_txt = new LinearLayout.LayoutParams(getLLWith(), ViewGroup.LayoutParams.WRAP_CONTENT);
tv.setLayoutParams(layoutParams_txt);
tv_num.setLayoutParams(layoutParams_txt);
// 添加到每行的linearlayout中
lLayout.addView(tv);
lLayout.addView(tv_num);
// 把每个linearlayout加到relativelayout中
ll_vertical.addView(lLayout);
}
}
场景二:
package com.dplustours.b2c.View.view;
/**
* Created by zhq_zhao on 2017/4/12.
*/
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
/**
* 强大的流式布局
* @author Administrator
*
*/
public class FlowLayout extends ViewGroup{
private int horizontalSpacing = 15;//水平间距
private int verticalSpacing = 15;//行与行之间的垂直间距
//用来存放所有的Line对象
private ArrayList lineList = new ArrayList();
public FlowLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public FlowLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
public FlowLayout(Context context) {
super(context);
}
/**
* 设置水平间距
* @param horizontalSpacing
*/
public void setHorizontalSpacing(int horizontalSpacing){
this.horizontalSpacing = horizontalSpacing;
}
/**
* 设置垂直间距
* @param verticalSpacing
*/
public void setVerticalSpacing(int verticalSpacing){
this.verticalSpacing = verticalSpacing;
}
/**
* 分行:遍历所有的子View,判断哪几个子View在同一行(排座位表)
*/
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//1.获取FlowLayout的宽度
int width = MeasureSpec.getSize(widthMeasureSpec);
//2.获取用于实际比较的宽度,就是除去2边的padding的宽度
int noPaddingWidth = width-getPaddingLeft()-getPaddingRight();
//3.遍历所有的子View,拿子View的宽和noPaddingWidth进行比较
Line line = new Line();//准备Line对象
for (int i = 0; i < getChildCount(); i++) {
View childView = getChildAt(i);
childView.measure(0, 0);//保证能够获取到宽高
childView.measure(widthMeasureSpec, heightMeasureSpec);
//4.如果当前line中木有子View,则不用比较直接放入line中,因为要保证每行至少有一个子View;
if(line.getViewList().size()==0){
line.addLineView(childView);//直接存入
}else if(line.getLineWidth()+horizontalSpacing+childView.getMeasuredWidth()>noPaddingWidth){
//5.如果当前line的宽+水平间距+子View的宽大于noPaddingWidth,则child需要换行
//需要先存放好之前的line对象,否则会造成丢失
lineList.add(line);
line = new Line();//创建新的Line,
line.addLineView(childView);//将当前child放入新的行中
}else {
//6.说明当前child应该放入当前Line中
line.addLineView(childView);
}
//7.如果当前child是最后的子View,那么需要保存最后的line对象
if(i==(getChildCount()-1)){
lineList.add(line);//保存最后的Line
}
}
//for循环结束了,lineList存放了所有的Line,而每个Line又记录了自己行所有的VIew;
//计算FLowLayout需要的高度
int height = getPaddingTop()+getPaddingTop();//先计算上下的padding值
for (int i = 0; i < lineList.size(); i++) {
height += lineList.get(i).getLineHeight();//再加上所有行的高度
}
height += (lineList.size()-1)*verticalSpacing;//最后加上所有的行间距
setMeasuredDimension(width, height);
//设置当前控件的宽高,或者向父VIew申请宽高
}
/**
* 去摆放所有的子View,让每个人真正的坐到自己的位置上
*/
@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,每行的top总是比上一行的top多一个行高和垂直间距
if(i>0){
paddingTop += verticalSpacing+lineList.get(i-1).getLineHeight();
}
ArrayList viewList = line.getViewList();//获取line的view的集合
//1.获取每行的留白的宽度
int remainSpacing = getLineRemainSpacing(line);
//2.计算每个view平均得到的值
float perSpacing = remainSpacing/viewList.size();
for (int j = 0; j < viewList.size(); j++) {
View childView = viewList.get(j);
//3.将得到的perSpacing增加到view的宽度上面
//int widthSpec = MeasureSpec.makeMeasureSpec((int) (childView.getMeasuredWidth()+perSpacing),MeasureSpec.EXACTLY);
int widthSpec = MeasureSpec.makeMeasureSpec((int) (childView.getMeasuredWidth()),MeasureSpec.EXACTLY);
childView.measure(widthSpec,0);
if(j==0){
//如果是每行的第一行,name直接靠左边摆放
childView.layout(paddingLeft,paddingTop,paddingLeft+childView.getMeasuredWidth(),
paddingTop+childView.getMeasuredHeight());
}else {
//如果不是第一个,需要参考前一个view的right
View preView = viewList.get(j-1);
//当前view的left是前一个view的right+水平间距
int left = preView.getRight()+horizontalSpacing;
childView.layout(left, preView.getTop(),left+childView.getMeasuredWidth(),preView.getBottom());
}
}
}
}
/**
* 获取指定line的留白
* @param line
* @return
*/
private int getLineRemainSpacing(Line line){
return getMeasuredWidth()-getPaddingLeft()-getPaddingRight()-line.getLineWidth();
}
/**
* 封装每行的数据,包括所有的子View,行的宽高
* @author Administrator
*
*/
class Line{
private ArrayList viewList;//用来存放当前行所有的子View
private int width;//表示所有子View的宽+水平间距
private int height;//行的高度
public Line(){
viewList = new ArrayList();
}
/**
* 记录子VIew
* @param child
*/
public void addLineView(View child){
if(!viewList.contains(child)){
viewList.add(child);
//1.更新Line的width
if(viewList.size()==1){
//说明添加的是第一个子View,那么line的宽就是子view的宽度
width = child.getMeasuredWidth();
}else {
//如果添加的不是第一个子View,那么应该加等于水平间距和子VIew的宽度
width += child.getMeasuredWidth()+horizontalSpacing;
}
//2.更新line的height
height = Math.max(height,child.getMeasuredHeight());
}
}
/**
* 获取当前行的宽度
* @return
*/
public int getLineWidth(){
return width;
}
/**
* 获取当前行的高度
* @return
*/
public int getLineHeight(){
return height;
}
/**
* 获取当前行的所有的子View
* @return
*/
public ArrayList getViewList(){
return viewList;
}
}
}
for (int i = 0; i < arrayList.size(); i++) {
final TextView textView = new TextView(mActivity);
textView.setTextSize(13);
textView.setLines(1);
textView.setTextColor(Color.GRAY);
textView.setGravity(Gravity.CENTER|Gravity.LEFT);
String slenth = arrayList.get(i);
String newstr="";
int newlenth=0;
if(slenth.length()>7){
newlenth=7;
newstr=slenth.substring(0, 7)+"...";
}else {
newlenth=slenth.length();
newstr=slenth.substring(0, slenth.length());
}
textView.setText(newstr);
textView.setPadding(px2dip(mActivity,30),px2dip(mActivity,10), px2dip(mActivity,10), px2dip(mActivity,10));
textView.setBackgroundResource(R.color.whit);
view_flow.addView(textView);