[我们正在寻找一种针对列表行的基于模板的解决方案，其中每个列表行可能具有不同的2字段及其对齐方式，这些字段将由服务器以json的形式驱动。
此json将提供有关字段编号和字段类型（如标签，图像及其对齐方式）的信息
[我们提出了一个解决方案，其中对于每一行，在getView（）方法中，我们都是解析布局json并以编程方式创建字段，并添加相应的值，然后将其添加到相对布局中，然后将所有这些相对布局添加到父级线性布局中垂直方向。然后将此布局分配给convertview，这样就创建了行。
使用此解决方案，列表视图并不平滑，因为正在进行大量计算以生成动态字段。
下面是示例布局json的代码
{
"layouts": [
{
"templateId": "HCI",
"width": "100%",
"backgroundColor": "#87CEFA",
"selectedBackgroundColor": "#96F2CD",
"cornerRadius": "0",
"borderWidth": "1",
"borderColor": "#000000",
"children": [
{
"width": "100%",
"height": "20",
"rightAlign": "0",
"children": [
{
"type": "label",
"field": "claimantName",
"textColor": "#EB6208",
"alignment": "left",
"fontSize": "16",
"style": "upper",
"horizontalPadding": "5",
"bold": "1"
},
{
"type": "label",
"field": "workType",
"textColor": "#EB6208",
"alignment": "left",
"fontSize": "16",
"style": "upper",
"horizontalPadding": "5",
"bold": "0"
},
{
"type": "label",
"field": "workkardNumber",
"backgroundColor": "#2D5DB9",
"textColor": "#FFFFFF",
"alignment": "right",
"horizontalPadding": "3"
}
]
},
{
"width": "100%",
"height": "15",
"children": [
{
"type": "label",
"field": "address",
"textColor": "#458B00",
"alignment": "left",
"fontSize": "16",
"style": "upper",
"horizontalPadding": "5",
"bold": "1"
},
{
"type": "label",
"field": "lossDate",
"textColor": "#838B83",
"alignment": "",
"fontSize": "16",
"style": "lower",
"horizontalPadding": "5",
"bold": "0"
}
]
},
{
"width": "100%",
"height": "15",
"children": [
{
"type": "label",
"field": "county",
"textColor": "#838B83",
"alignment": "left",
"fontSize": "16",
"style": "upper",
"horizontalPadding": "5",
"bold": "0"
},
{
"type": "label",
"field": "zip",
"textColor": "#0000FF",
"alignment": "",
"fontSize": "16",
"style": "lower",
"horizontalPadding": "5",
"bold": "0"
},
{
"type": "label",
"field": "state",
"textColor": "#458B00",
"alignment": "",
"fontSize": "16",
"style": "upper",
"horizontalPadding": "5",
"bold": "0"
},
{
"type": "label",
"field": "reportedDate",
"textColor": "#838B83",
"alignment": "",
"fontSize": "16",
"style": "lower",
"horizontalPadding": "5",
"bold": "0"
}
]
},
{
"width": "100%",
"height": "50",
"children": [
{
"type": "spacer",
"width": "20"
},
{
"type": "label",
"field": "lossType",
"style": "upper",
"width": "280",
"textColor": "#458B00",
"bold": "1",
"fontSize": "16"
}
]
},
{
"width": "100%",
"height": "20",
"children": [
]
}
]
}
]}
下面是我解析和动态创建字段的逻辑
public LinearLayout generateLayout(Object object, WorkkardData workkard){
this.workkardData=workkard;
JSONObject json = (JSONObject)object;
String template="";
String cardBackground="";
String cardSelectedBackground="";
ArrayList child=new ArrayList();
ArrayList subChild=new ArrayList();
String fieldName="";
try {
template = json.getString("templateId");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
cardBackground = json.getString("backgroundColor");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
cardSelectedBackground = json.getString("selectedBackgroundColor");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
cardBackground = json.getString("backgroundColor");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
LinearLayout workkardrowLayout = new LinearLayout(context);
workkardrowLayout.setOrientation(LinearLayout.VERTICAL);
workkardrowLayout.setBackgroundColor(Color.parseColor(cardBackground));
try {
JSONArray childrentop = json.getJSONArray("children");
child.add(childrentop);
for (int i = 0; i < childrentop.length(); i++) {
JSONArray subChildren = childrentop.getJSONObject(i).getJSONArray("children");
subChild.add(subChildren);
String width="350", height="0", rightAlignmen="0";
int widthInt=0;
try {
width = childrentop.getJSONObject(i).getString("width");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
height = childrentop.getJSONObject(i).getString("height");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
rightAlignmen = childrentop.getJSONObject(i).getString("rightAlign");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(width.equalsIgnoreCase("100%")){
widthInt = 350;
}else{
widthInt = 350*(Integer.parseInt(width.trim().split("%")[0]))/100;
}
LinearLayout.LayoutParams paramsll1 = new LinearLayout.LayoutParams(widthInt,Integer.parseInt(height.trim()));
/*if(rightAlignmen.equalsIgnoreCase("1")){
paramsll1.gravity = Gravity.RIGHT;
}else{
paramsll1.gravity = Gravity.LEFT;
}*/
LinearLayout listLayoutRow1 = new LinearLayout(context);
ll[i] = new LinearLayout(context);
ll[i].setOrientation(LinearLayout.HORIZONTAL);
ll[i].setWeightSum(10);
ll[i].setLayoutParams(paramsll1);
if(subChildren.length()==0){
workkardrowLayout.addView(ll[i]);
}else{
for (int j = 0; j < subChildren.length(); j++) {
String type = "", field= "", backgroundColor ="", textColor ="", alignment ="",horizontalPadding ="", bold="",widthChild="",textColorChild="",fontSize="",style="lower";
try {
type = subChildren.getJSONObject(j).getString("type");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
field = subChildren.getJSONObject(j).getString("field");
fieldName=field;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
backgroundColor = subChildren.getJSONObject(j).getString("backgroundColor");
//ll[i].setBackgroundColor(Color.parseColor(backgroundColor));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
textColor = subChildren.getJSONObject(j).getString("textColor");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
alignment = subChildren.getJSONObject(j).getString("alignment");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
horizontalPadding = subChildren.getJSONObject(j).getString("horizontalPadding");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
bold = subChildren.getJSONObject(j).getString("bold");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
widthChild = subChildren.getJSONObject(j).getString("width");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
textColorChild = subChildren.getJSONObject(j).getString("textColor");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
fontSize = subChildren.getJSONObject(j).getString("fontSize");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
style = subChildren.getJSONObject(j).getString("style");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int padding=0;
try {
padding = Integer.parseInt(horizontalPadding);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
LinearLayout.LayoutParams llChild = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
//paramsll1. = Integer.parseInt(horizontalPadding);
//paramsll1.topMargin = 10;
//paramsll1.bottomMargin = 10;
//paramsll1.rightMargin = 10;
//paramsll1.gravity = Gravity.LEFT;
if(rightAlignmen.equalsIgnoreCase("1")){
llChild.gravity = Gravity.RIGHT;
}
if(type.equalsIgnoreCase("label")){
TextView listText1 = new TextView(context);
if(style.equalsIgnoreCase("upper")){
//listText1.setTypeface(null, Typeface.BOLD);
listText1.setText(this.getWorkkardMethod(field).toUpperCase());
}else{
listText1.setText(this.getWorkkardMethod(field));
}
if(field.equalsIgnoreCase("lossDate")){
listText1.setText("Loss Date:"+this.getWorkkardMethod(field));
}
if(field.equalsIgnoreCase("reportedDate")){
listText1.setText("Reported:"+this.getWorkkardMethod(field));
}
if (!backgroundColor.equalsIgnoreCase("")) {
listText1.setBackgroundColor(Color.parseColor(backgroundColor));
}
listText1.setTextColor(Color.parseColor(textColor));
if (!fontSize.equalsIgnoreCase("")) {
listText1.setTextSize(Integer.parseInt(fontSize));
}
listText1.setPadding(padding,padding, padding, padding);
if(alignment.equalsIgnoreCase("left")){
ll[i].setGravity(Gravity.LEFT);
}
if(alignment.equalsIgnoreCase("right")){
ll[i].setGravity(Gravity.RIGHT);
}
if(alignment.equalsIgnoreCase("centre")){
ll[i].setGravity(Gravity.CENTER);
}
if(bold.equalsIgnoreCase("1")){
listText1.setTypeface(null, Typeface.BOLD);
}
ll[i].addView(listText1);
ll[i].setLayoutParams(llChild);
}else if(type.equalsIgnoreCase("spacer")){
llChild.width=Integer.parseInt(widthChild);
ll[i].setLayoutParams(llChild);
TextView listText1 = new TextView(context);
listText1.setText(" ");
ll[i].addView(listText1);
}
}
workkardrowLayout.addView(ll[i]);
}
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// LinearLayout workkardrowLayout = new LinearLayout(context);
// workkardrowLayout.setOrientation(LinearLayout.VERTICAL);
// workkardrowLayout.setBackgroundColor(Color.parseColor(cardBackground));
//if()
// LinearLayout listLayoutRow1 = new LinearLayout(context);
// LinearLayout listLayoutRow2 = new LinearLayout(context);
// LinearLayout listLayoutRow3 = new LinearLayout(context);
//
// listLayoutRow1.setOrientation(LinearLayout.HORIZONTAL);
// listLayoutRow2.setOrientation(LinearLayout.HORIZONTAL);
// listLayoutRow3.setOrientation(LinearLayout.HORIZONTAL);
//
// listLayoutRow1.setWeightSum(20);
// listLayoutRow2.setWeightSum(20);
// listLayoutRow3.setWeightSum(20);
//
// LinearLayout.LayoutParams paramsll1 = new LinearLayout.LayoutParams(300, LayoutParams.WRAP_CONTENT);
// paramsll1.leftMargin = 10;
// paramsll1.topMargin = 10;
// paramsll1.bottomMargin = 10;
// paramsll1.rightMargin = 10;
// paramsll1.gravity = Gravity.LEFT;
// listLayoutRow1.setLayoutParams(paramsll1);
// listLayoutRow2.setLayoutParams(paramsll1);
// listLayoutRow3.setLayoutParams(paramsll1);
//
// TextView listText1 = new TextView(context);
// listText1.setText(template);
// TextView listText2 = new TextView(context);
// listText2.setText("Hurre............ Dynamic lauout row2:-)");
// TextView listText3 = new TextView(context);
// listText3.setText("Hurre............ Dynamic lauout row 3:-)");
//
// listLayoutRow1.addView(listText1);
// listLayoutRow2.addView(listText2);
// listLayoutRow3.addView(listText3);
//
// workkardrowLayout.addView(listLayoutRow1);
// workkardrowLayout.addView(listLayoutRow2);
// workkardrowLayout.addView(listLayoutRow3);
return workkardrowLayout;
}
String getWorkkardMethod(String fieldName){
String work="";
if(fieldName.equalsIgnoreCase("template")){
work=workkardData.getTemplate();
}else if(fieldName.equalsIgnoreCase("workkardTitle")){
work=workkardData.getWorkkardTitle();
}else if(fieldName.equalsIgnoreCase("workkardDescription")){
work=workkardData.getWorkkardDescription();
}else if(fieldName.equalsIgnoreCase("workType")){
work=workkardData.getWorkType();
}else if(fieldName.equalsIgnoreCase("workkardNumber")){
work=workkardData.getWorkkardNumber();
}else if(fieldName.equalsIgnoreCase("claimantName")){
work=workkardData.getClaimantName();
}else if(fieldName.equalsIgnoreCase("reportedDate")){
work=workkardData.getReportedDate();
}else if(fieldName.equalsIgnoreCase("lossDate")){
work=workkardData.getLossDate();
}else if(fieldName.equalsIgnoreCase("lossType")){
work=workkardData.getLossType();
}else if(fieldName.equalsIgnoreCase("address")){
work=workkardData.getAddress();
}else if(fieldName.equalsIgnoreCase("county")){
work=workkardData.getCounty();
}else if(fieldName.equalsIgnoreCase("state")){
work=workkardData.getState();
}else if(fieldName.equalsIgnoreCase("zip")){
work=workkardData.getZip();
}
return work;
}
您可以采取一些措施来改善视图的性能：
[Supplemental video（很长，但是对于适配器来说非常有用）。