我正在开发一个包含动态数据的自定义列表视图的项目。我想要的是在arraylist中获取该数据然后将其传递给php文件以进行进一步处理。我可以为单个值执行此操作，但对于多个值，我不知道。
这是我的适配器类：
public class ListAdapter extends ArrayAdapter {
//static String get_empcode,get_empname,get_app_date,get_nod,get_from,get_to,get_lv_type,get_reason,get_remark,get_status;
static List list=new ArrayList();
static String[] get_empcode,get_empname,get_app_date,get_nod,get_from,get_to,get_lv_type,get_reason,get_remark,get_status;
static String sting_length;
int i;
public ListAdapter(Context context, int resource) {
super(context, resource);
}
public void add(Details object) {
super.add(object);
list.add(object);
}
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row;
row=convertView;
final DetailsHolder detailsHolder;
if(row==null)
{
LayoutInflater layoutInflater=(LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row=layoutInflater.inflate(R.layout.list_layout_approval, parent, false);
detailsHolder=new DetailsHolder();
detailsHolder.empcode=(TextView) row.findViewById(R.id.empcode1);
detailsHolder.empname=(TextView) row.findViewById(R.id.empname1);
detailsHolder.appdate=(TextView) row.findViewById(R.id.appdate1);
detailsHolder.lv_type=(TextView) row.findViewById(R.id.lv_type1);
detailsHolder.from=(TextView) row.findViewById(R.id.from1);
detailsHolder.to=(TextView) row.findViewById(R.id.to1);
detailsHolder.nod=(TextView) row.findViewById(R.id.nod1);
detailsHolder.reason=(TextView) row.findViewById(R.id.reason1);
detailsHolder.status=(TextView) row.findViewById(R.id.status1);
detailsHolder.cb2=(CheckBox) row.findViewById(R.id.cb2);
// Leave_approval la=new Leave_approval();
/*
if( Leave_approval.cb_status==true){
detailsHolder.cb2.setChecked(true);
}
else
{
detailsHolder.cb2.setChecked(false);
}
*/
DetailsHolder.cb2.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(DetailsHolder.cb2.isChecked())
{
get_empcode=(String) detailsHolder.empcode.getText();
get_from=(String) detailsHolder.from.getText();
get_to=(String) detailsHolder.to.getText();
get_lv_type=(String) detailsHolder.lv_type.getText();
get_nod=(String) detailsHolder.nod.getText();
get_status=(String) detailsHolder.status.getText();
}
}
});
row.setTag(detailsHolder);
}
else{
detailsHolder=(DetailsHolder) row.getTag();
}
Details details=(Details)this.getItem(position);
detailsHolder.empcode.setText(details.getEmpcode());
detailsHolder.empname.setText(details.getEmpname());
detailsHolder.appdate.setText(details.getApplyDate());
detailsHolder.lv_type.setText(details.getLeave_type());
detailsHolder.from.setText(details.getFrom());
detailsHolder.to.setText(details.getTo());
detailsHolder.nod.setText(details.getNod());
detailsHolder.reason.setText(details.getReason());
detailsHolder.status.setText(details.getStatus());
return row;
}
这是我的Activity文件，我使用异步任务将数据传递给php
公共类Leave_approval扩展了Activity {
String JSON_STRING,php_result,LeaveType,empcode,FullName,ApplyDate,From,To,NOD,Reason,Status;
//String empcode_val="",lv_type_val="",nod_value="",status_val="",from_value="",to_value="";
String[] empcode_val,lv_type_val,nod_value,status_val,from_value,to_value;
JSONObject jsonObject;
JSONArray jsonArray;
String[] date_list;
ArrayList<HashMap<String, String>> personList;
TextView head;
ListAdapter listAdapter;
ListView listView;
CheckBox cb1;
static Boolean cb_status;
int i;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.leave_approval);
listView=(ListView) findViewById(R.id.list);
cb1=(CheckBox) findViewById(R.id.cb1);
listAdapter=new ListAdapter(this, R.layout.list_layout_approval);
listView.setAdapter(listAdapter);
head=(TextView) findViewById(R.id.head);
Bundle b = getIntent().getExtras();
php_result=b.getString("json_data");
//Toast.makeText(getBaseContext(), php_result, Toast.LENGTH_SHORT).show();
cb1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
try {
jsonObject=new JSONObject(php_result);
jsonArray=jsonObject.getJSONArray("server_response");
for(int i=0;i<jsonArray.length();i++){
JSONObject c = jsonArray.getJSONObject(i);
LeaveType=c.getString("LeaveType");
empcode=c.getString("empcode");
FullName=c.getString("FullName");
ApplyDate=c.getString("ApplyDate");
From=c.getString("From");
To=c.getString("To");
NOD=c.getString("NOD");
Reason=c.getString("Reason");
Status=c.getString("Status");
String[] from_array=From.split("-");
String[] to_array=To.split("-");
String[] apply_array=ApplyDate.split("-");
String from_date,to_date,appdate;
if(from_array[1].equals("01"))
from_array[1]="jan";
if(from_array[1].equals("02"))
from_array[1]="Feb";
if(from_array[1].equals("03"))
from_array[1]="Mar";
if(from_array[1].equals("04"))
from_array[1]="Apr";
if(from_array[1].equals("05"))
from_array[1]="May";
if(from_array[1].equals("06"))
from_array[1]="Jun";
if(from_array[1].equals("07"))
from_array[1]="Jul";
if(from_array[1].equals("08"))
from_array[1]="Aug";
if(from_array[1].equals("09"))
from_array[1]="Sep";
if(from_array[1].equals("10"))
from_array[1]="Oct";
if(from_array[1].equals("11"))
from_array[1]="Nov";
if(from_array[1].equals("12"))
from_array[1]="Dec";
if(to_array[1].equals("01"))
to_array[1]="jan";
if(to_array[1].equals("02"))
from_array[1]="Feb";
if(to_array[1].equals("03"))
to_array[1]="Mar";
if(to_array[1].equals("04"))
to_array[1]="Apr";
if(to_array[1].equals("05"))
to_array[1]="May";
if(to_array[1].equals("06"))
to_array[1]="Jun";
if(to_array[1].equals("07"))
to_array[1]="Jul";
if(to_array[1].equals("08"))
to_array[1]="Aug";
if(to_array[1].equals("09"))
to_array[1]="Sep";
if(to_array[1].equals("10"))
to_array[1]="Oct";
if(to_array[1].equals("11"))
to_array[1]="Nov";
if(to_array[1].equals("12"))
to_array[1]="Dec";
if(apply_array[1].equals("01"))
apply_array[1]="jan";
if(apply_array[1].equals("02"))
apply_array[1]="Feb";
if(apply_array[1].equals("03"))
apply_array[1]="Mar";
if(apply_array[1].equals("04"))
apply_array[1]="Apr";
if(apply_array[1].equals("05"))
apply_array[1]="May";
if(apply_array[1].equals("06"))
apply_array[1]="Jun";
if(apply_array[1].equals("07"))
apply_array[1]="Jul";
if(apply_array[1].equals("08"))
apply_array[1]="Aug";
if(apply_array[1].equals("09"))
apply_array[1]="Sep";
if(apply_array[1].equals("10"))
apply_array[1]="Oct";
if(apply_array[1].equals("11"))
apply_array[1]="Nov";
if(apply_array[1].equals("12"))
apply_array[1]="Dec";
from_date=from_array[2]+"-"+from_array[1]+"-"+from_array[0];
to_date=to_array[2]+"-"+to_array[1]+"-"+to_array[0];
appdate=apply_array[2]+"-"+apply_array[1]+"-"+apply_array[0];
Details details=new Details(empcode,FullName,appdate,LeaveType,from_date,to_date,NOD,Reason,Status);
listAdapter.add(details);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void approve(View view){
String empcode_val="",lv_type_val="",nod_value="",status_val="",from_value="",to_value="";
empcode_val=ListAdapter.get_empcode;
lv_type_val=ListAdapter.get_lv_type;
nod_value=ListAdapter.get_nod;
status_val="Approved";
from_value=ListAdapter.get_from;
to_value=ListAdapter.get_to;
if(empcode_val.equals("")&&lv_type_val.equals("")&&nod_value.equals("")&&status_val.equals("")&&from_value.equals("")
&&to_value.equals("")){
Toast.makeText(getBaseContext(), "Please make some selections",Toast.LENGTH_SHORT).show();
}
else{
BackgroundTask backgroundTask = new BackgroundTask(getApplicationContext());
backgroundTask.execute(empcode_val,lv_type_val,nod_value,status_val,from_value,to_value);
}
}
公共类BackgroundTask扩展了AsyncTask {
AsyncResponse delegate = null;
Context ctx;
BackgroundTask(Context ctx)
{
this.ctx =ctx;
}
@Override
protected void onPreExecute() {
}
protected String doInBackground(String... params) {
String login_url = "http://10.0.2.2/neha/leave_approval_update.php";
String empcode = params[0];
String leave_type=params[1];
String nod=params[2];
String status=params[3];
String from=params[4];
String to=params[5];
try {
URL url = new URL(login_url);
HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream,"UTF-8"));
String data = URLEncoder.encode("empcode","UTF-8")+"="+URLEncoder.encode(empcode,"UTF-8")+"&"+
URLEncoder.encode("leave_type","UTF-8")+"="+URLEncoder.encode(leave_type,"UTF-8")+"&"+
URLEncoder.encode("nod","UTF-8")+"="+URLEncoder.encode(nod,"UTF-8")+"&"+
URLEncoder.encode("status","UTF-8")+"="+URLEncoder.encode(status,"UTF-8")+"&"+
URLEncoder.encode("from","UTF-8")+"="+URLEncoder.encode(from,"UTF-8")+"&"+
URLEncoder.encode("to","UTF-8")+"="+URLEncoder.encode(to,"UTF-8");
bufferedWriter.write(data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
String response = "";
String line = "";
while ((line = bufferedReader.readLine())!=null)
{
response+= line;
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return response;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// }
return null;
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(String result) {
Toast.makeText(ctx, result, Toast.LENGTH_SHORT).show();
}
}
}
答案 0 :(得分：0)
好的，我通过为我的所有数据创建数组列表来解决我的问题，然后我解析为json数组并将其作为字符串传递给php。 这就是我的方式：
这些是我的arraylist
public void approve(View view){
ArrayList<String> emplist=new ArrayList<>();
ArrayList<String> fromlist=new ArrayList<>();
ArrayList<String> tolist=new ArrayList<>();
ArrayList<String> lv_typelist=new ArrayList<>();
ArrayList<String> nodlist=new ArrayList<>();
ArrayList<String> status=new ArrayList<>();
// getting data from ListAdapter class and and adding it to arraylist
emplist=ListAdapter.getemplist();
fromlist=ListAdapter.getfromlist();
tolist=ListAdapter.gettolist();
lv_typelist=ListAdapter.getlv_typelist();
nodlist=ListAdapter.getnodlist();
status.add("Approved");
JSONArray jArr1= new JSONArray();
for(String data:emplist)
{
jArr1.put(data);
}
JSONArray jArr2= new JSONArray();
for(String data:fromlist)
{
jArr2.put(data);
}
JSONArray jArr3= new JSONArray();
for(String data:tolist)
{
jArr3.put(data);
}
JSONArray jArr4= new JSONArray();
for(String data:lv_typelist)
{
jArr4.put(data);
}
JSONArray jArr5= new JSONArray();
for(String data:status)
{
jArr5.put(data);
}
JSONArray jArraySet = new JSONArray();
jArraySet.put(jArr1);
jArraySet.put(jArr2);
jArraySet.put(jArr3);
jArraySet.put(jArr4);
jArraySet.put(jArr5);
BackgroundTask backgroundTask = new BackgroundTask(getApplicationContext());
backgroundTask.execute(json_string);
}