我创建了一个带有倒数计时器的Listview，下面是代码：
public class TicketAdapter extends ArrayAdapter<TicketModel> implements View.OnClickListener{
private ArrayList<TicketModel> dataSet;
Context mContext;
long timeLeftMS ;
// View lookup cache
private class ViewHolder {
TextView txtName;
TextView txtType;
TextView txtTempsRestant;
TextView txtDate;
TextView txtSLA;
ImageView info;
RelativeLayout layout;
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
System.out.println("handler");
int hour = (int) ((timeLeftMS / (1000*60*60)) % 24);
int minute = (int) ((timeLeftMS / (60000)) % 60);
int seconde = (int)timeLeftMS % 60000 / 1000;
String timeLeftText = "";
if (hour<10) timeLeftText += "0";
timeLeftText += hour;
timeLeftText += ":";
if (minute<10) timeLeftText += "0";
timeLeftText += minute;
timeLeftText += ":";
if (seconde<10) timeLeftText += "0";
timeLeftText += seconde;
txtTempsRestant.setText(timeLeftText);
}
};
}
public TicketAdapter(ArrayList<TicketModel> data, Context context) {
super(context, R.layout.row_item_ticket, data);
this.dataSet = data;
this.mContext=context;
//startUpdateTimer();
}
@Override
public void onClick(View v) {
int position=(Integer) v.getTag();
Object object= getItem(position);
TicketModel TicketModel=(TicketModel)object;
switch (v.getId())
{
case R.id.item_info:
Snackbar.make(v, "is Late? : " +TicketModel.isTicketEnRetard(), Snackbar.LENGTH_LONG)
.setAction("No action", null).show();
break;
}
}
private int lastPosition = -1;
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Get the data item for this position
TicketModel TicketModel = getItem(position);
// Check if an existing view is being reused, otherwise inflate the view
final ViewHolder viewHolder; // view lookup cache stored in tag
final View result;
if (convertView == null) {
viewHolder = new ViewHolder();
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(R.layout.row_item_ticket, parent, false);
viewHolder.txtName = (TextView) convertView.findViewById(R.id.titreTV);
viewHolder.txtDate = (TextView) convertView.findViewById(R.id.dateTV);
viewHolder.txtSLA = (TextView) convertView.findViewById(R.id.slaTV);
viewHolder.txtTempsRestant = (TextView) convertView.findViewById(R.id.SLARestantTV);
viewHolder.info = (ImageView) convertView.findViewById(R.id.item_info);
viewHolder.layout = (RelativeLayout) convertView.findViewById(R.id.backgroundRow);
result=convertView;
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
result=convertView;
}
Animation animation = AnimationUtils.loadAnimation(mContext, (position > lastPosition) ? R.anim.up_from_bottom : R.anim.down_from_top);
result.startAnimation(animation);
lastPosition = position;
viewHolder.txtName.setText(TicketModel.getTitreTicket());
viewHolder.txtDate.setText(TicketModel.getDateTicket());
viewHolder.txtSLA.setText(TicketModel.getSlaTicket());
//viewHolder.txtTempsRestant.setText(TicketModel.getTempsRestantTicket());
viewHolder.info.setImageResource(getIconUrgence(TicketModel.getUrgenceTicket()));
viewHolder.layout.setBackgroundColor(getColorBG(TicketModel.isTicketEnRetard()));
viewHolder.info.setOnClickListener(this);
viewHolder.info.setTag(position);
System.out.println("Here : "+TicketModel.getTitreTicket()); //getting each item's name
System.out.println("Time = "+TicketModel.getTempsRestantTicket()); //getting each item's time left and it's correct
timeLeftMS = Long.valueOf(TicketModel.getTempsRestantTicket());
startTimer(viewHolder.handler);
// Return the completed view to render on screen
return convertView;
}
private void startTimer(final Handler handler) {
CountDownTimer countDownTimer = new CountDownTimer(timeLeftMS, 1000) {
@Override
public void onTick(long l) {
timeLeftMS = l;
handler.sendEmptyMessage(0);
}
@Override
public void onFinish() {
}
}.start();
}
private int getColorBG(boolean ticketEnRetard) {
int color;
if (ticketEnRetard){
color = Color.parseColor("#3caa0000");
}
else{
color = Color.parseColor("#ffffff");
}
return color;
}
private int getIconUrgence(String urgenceTicket) {
int icon;
if((urgenceTicket.equals("Très basse"))||(urgenceTicket.equals("Basse"))){
icon = R.drawable.basse;
}
else if((urgenceTicket.equals("Haute"))||(urgenceTicket.equals("Très haute"))){
icon = R.drawable.haute;
}
else {
icon = R.drawable.moyenne;
}
return icon;
}
}
TicketModel 类：
public class TicketModel {
String titreTicket;
String slaTicket;
String DateTicket;
String UrgenceTicket;
boolean ticketEnRetard;
String TempsRestantTicket;
public TicketModel(String titreTicket, String slaTicket, String dateTicket, String tempsRestantTicket) {
this.titreTicket = titreTicket;
this.slaTicket = slaTicket;
DateTicket = dateTicket;
TempsRestantTicket = tempsRestantTicket;
}
public String getTitreTicket() {
return titreTicket;
}
public String getSlaTicket() {
return slaTicket;
}
public String getDateTicket() {
return DateTicket;
}
public String getUrgenceTicket() {
return UrgenceTicket;
}
public void setUrgenceTicket(String urgenceTicket) {
UrgenceTicket = urgenceTicket;
}
public void setTempsRestantTicket(String tempsRestantTicket) {
TempsRestantTicket = tempsRestantTicket;
}
public String getTempsRestantTicket() {
return TempsRestantTicket;
}
public boolean isTicketEnRetard() {
return ticketEnRetard;
}
public void setTicketEnRetard(boolean ticketEnRetard) {
this.ticketEnRetard = ticketEnRetard;
}
}
我要填充ListView的位置：
public class ListTickets extends AppCompatActivity {
ArrayList<TicketModel> TicketModels;
ListView listView;
private static TicketAdapter adapter;
String session_token, nameUser, idUser, firstnameUser, nbTicket;
RequestQueue queue;
String titreTicket, slaTicket, urgenceTicket,
demandeurTicket, categorieTicket, etatTicket, dateDebutTicket,
dateEchanceTicket, dateClotureTicket, descriptionTicket, lieuTicket;
boolean ticketEnretard;
public static int nbTicketTab = 6;
public static int nbInfoTicket = 12;
public static String[][] ticketTab ;
public static String[][] infoTicket ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list_tickets);
queue = Volley.newRequestQueue(this);
Intent i = getIntent();
session_token = i.getStringExtra("session");
nbTicket = i.getStringExtra("nb");
nameUser = i.getStringExtra("nom");
firstnameUser = i.getStringExtra("prenom");
idUser = i.getStringExtra("id");
listView=(ListView)findViewById(R.id.list);
TicketModels = new ArrayList<>();
ticketTab = new String[Integer.valueOf(nbTicket)][nbTicketTab];
infoTicket = new String[Integer.valueOf(nbTicket)][nbInfoTicket];
String url = FirstEverActivity.GLPI_URL+"search/Ticket";
List<KeyValuePair> params = new ArrayList<>();
params.add(new KeyValuePair("criteria[0][field]","5"));
params.add(new KeyValuePair("criteria[0][searchtype]","equals"));
params.add(new KeyValuePair("criteria[0][value]",idUser));
params.add(new KeyValuePair("forcedisplay[0]","4"));
params.add(new KeyValuePair("forcedisplay[1]","10"));
params.add(new KeyValuePair("forcedisplay[2]","7"));
params.add(new KeyValuePair("forcedisplay[3]","12"));
params.add(new KeyValuePair("forcedisplay[4]","15"));
params.add(new KeyValuePair("forcedisplay[5]","30"));
params.add(new KeyValuePair("forcedisplay[6]","18"));
params.add(new KeyValuePair("forcedisplay[7]","21"));
params.add(new KeyValuePair("forcedisplay[8]","83"));
params.add(new KeyValuePair("forcedisplay[9]","82"));
params.add(new KeyValuePair("forcedisplay[10]","16"));
final JsonObjectRequest getRequest = new JsonObjectRequest(Request.Method.GET, generateUrl(url, params), null,
new Response.Listener<JSONObject>()
{
@Override
public void onResponse(JSONObject response) {
try {
JSONArray Jdata = response.getJSONArray("data");
for (int i=0; i < Jdata.length(); i++) {
try {
JSONObject oneTicket = Jdata.getJSONObject(i);
// Récupération des items pour le row_item
titreTicket = oneTicket.getString("1");
slaTicket = oneTicket.getString("30");
dateDebutTicket = oneTicket.getString("15");
urgenceTicket = oneTicket.getString("10");
//Récupération du reste
demandeurTicket = oneTicket.getString("4");
categorieTicket = oneTicket.getString("7");
etatTicket = oneTicket.getString("12");
dateEchanceTicket = oneTicket.getString("18");
descriptionTicket = oneTicket.getString("21");
lieuTicket = oneTicket.getString("83");
dateClotureTicket = oneTicket.getString("16");
ticketEnretard = getBooleanFromSt(oneTicket.getString("82"));
System.out.println("Direct = " + oneTicket.getString("82") + "\n After f(x) = " + getBooleanFromSt(oneTicket.getString("82")));
} catch (JSONException e) {
Log.e("Nb of data: "+Jdata.length()+" || "+"Error JSONArray at "+i+" : ", e.getMessage());
}
ticketTab[i][0] = titreTicket;
ticketTab[i][1] = slaTicket;
ticketTab[i][2] = dateDebutTicket;
ticketTab[i][3] = urgenceText(urgenceTicket);
ticketTab[i][4] = calculTempsRestant(dateDebutTicket, slaTicket); //TimeLeft value here
ticketTab[i][5] = String.valueOf(ticketEnretard);
infoTicket[i][0] = demandeurTicket;
infoTicket[i][1] = urgenceText(urgenceTicket);
infoTicket[i][2] = categorieTicket;
infoTicket[i][3] = etatText(etatTicket);
infoTicket[i][4] = dateDebutTicket;
infoTicket[i][5] = slaTicket;
infoTicket[i][6] = dateEchanceTicket;
infoTicket[i][7] = titreTicket;
infoTicket[i][8] = descriptionTicket;
infoTicket[i][9] = lieuTicket;
infoTicket[i][10] = calculTempsRestant(dateDebutTicket, slaTicket);
infoTicket[i][11] = dateClotureTicket;
System.out.println("Temps restant = "+calculTempsRestant(dateDebutTicket, slaTicket));
System.out.println("SLA = "+slaTicket);
System.out.println("Between : "+getBetweenBrackets(slaTicket));
System.out.println("Minimum : "+getMinTemps(slaTicket));
System.out.println("Maximim : "+getMaxTemps(slaTicket));
}
System.out.println("*** Tab Ticket ***");
System.out.println("isLate: "+ticketTab[0][5]);
System.out.println("\n\n*** Info Ticket ***");
System.out.println("Titre: "+infoTicket[0][7]);
// Populate the ListView
addModelsFromTab(ticketTab);
adapter = new TicketAdapter(TicketModels,getApplicationContext());
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
TicketModel TicketModel= TicketModels.get(position);
Snackbar.make(view, "Index = "+position, Snackbar.LENGTH_LONG)
.setAction("No action", null).show();
Intent i = new Intent(getApplicationContext(), InfoTicket.class);
i.putExtra("session",session_token);
i.putExtra("nom",nameUser);
i.putExtra("prenom",firstnameUser);
i.putExtra("id",idUser);
i.putExtra("infoTicket", infoTicket[position]);
startActivity(i);
}
});
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener()
{
@Override
public void onErrorResponse(VolleyError error) {
//progressBar.setVisibility(View.GONE);
Log.e("Error.Response", error.toString());
}
}
){
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
HashMap<String, String> params = new HashMap<String, String>();
params.put("App-Token",FirstEverActivity.App_Token);
params.put("Session-Token",session_token);
return params;
}
};
// add it to the RequestQueue
queue.add(getRequest);
}
private void addModelsFromTab(String[][] ticketTab) {
for (int i = 0; i < ticketTab.length; i++){
TicketModel ticket = new TicketModel(ticketTab[i][0], ticketTab[i][1], ticketTab[i][2], ticketTab[i][4]);
ticket.setUrgenceTicket(ticketTab[i][3]);
ticket.setTicketEnRetard(Boolean.parseBoolean(ticketTab[i][5]));
//ticket.setTempsRestantTicket(ticketTab[i][4]);
TicketModels.add(ticket);
}
}
private String calculTempsRestant(String dateDebutTicket, String slaTicket) {
String minTemps = getMinTemps(slaTicket);
String maxTemps = getMaxTemps(slaTicket);
long dateDebutMS = getDateDebutMS(dateDebutTicket);
long currentTimeMS = CurrentTimeMS();
long minTempsMS = hourToMSConvert(minTemps);
long differenceCurrentDebut = currentTimeMS - dateDebutMS;
long tempsRestant = minTempsMS - differenceCurrentDebut;
return String.valueOf(tempsRestant);
}
}
我的问题是我想在timeLeftText TextView中显示计时器（txtTempsRestant字符串），但是我无法访问它。谁能给我建议？
当我在控制台中打印并且输出正确时，但是我无法显示它。我应该改变工作方式吗？
答案 0 :(得分：1)
修改后的适配器类，以使倒计时正常工作。
public class TicketAdapter extends ArrayAdapter<TicketModel> implements View.OnClickListener{
private ArrayList<TicketModel> dataSet;
Context mContext;
// View lookup cache
private class ViewHolder {
TextView txtName;
TextView txtType;
TextView txtTempsRestant;
TextView txtDate;
TextView txtSLA;
ImageView info;
RelativeLayout layout;
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
System.out.println("handler");
Bundle bundle = msg.getData();
long timeLeftMS = bundle.getLong("time");
int hour = (int) ((timeLeftMS / (1000*60*60)) % 24);
int minute = (int) ((timeLeftMS / (60000)) % 60);
int seconde = (int)timeLeftMS % 60000 / 1000;
String timeLeftText = "";
if (hour<10) timeLeftText += "0";
timeLeftText += hour;
timeLeftText += ":";
if (minute<10) timeLeftText += "0";
timeLeftText += minute;
timeLeftText += ":";
if (seconde<10) timeLeftText += "0";
timeLeftText += seconde;
txtTempsRestant.setText(timeLeftText);
}
};
public void startTimer(long timeLeftMS) {
CountDownTimer countDownTimer = new CountDownTimer(timeLeftMS, 1000) {
@Override
public void onTick(long l) {
Bundle bundle = new Bundle();
bundle.putLong("time", l);
Message message = new Message();
message.setData(bundle);
handler.sendMessage(message);
}
@Override
public void onFinish() {
}
}.start();
}
}
public TicketAdapter(ArrayList<TicketModel> data, Context context) {
super(context, R.layout.row_item_ticket, data);
this.dataSet = data;
this.mContext=context;
//startUpdateTimer();
}
@Override
public void onClick(View v) {
int position=(Integer) v.getTag();
Object object= getItem(position);
TicketModel TicketModel=(TicketModel)object;
switch (v.getId())
{
case R.id.item_info:
Snackbar.make(v, "is Late? : " +TicketModel.isTicketEnRetard(), Snackbar.LENGTH_LONG)
.setAction("No action", null).show();
break;
}
}
private int lastPosition = -1;
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Get the data item for this position
TicketModel TicketModel = getItem(position);
// Check if an existing view is being reused, otherwise inflate the view
final ViewHolder viewHolder; // view lookup cache stored in tag
final View result;
if (convertView == null) {
viewHolder = new ViewHolder();
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(R.layout.row_item_ticket, parent, false);
viewHolder.txtName = (TextView) convertView.findViewById(R.id.titreTV);
viewHolder.txtDate = (TextView) convertView.findViewById(R.id.dateTV);
viewHolder.txtSLA = (TextView) convertView.findViewById(R.id.slaTV);
viewHolder.txtTempsRestant = (TextView) convertView.findViewById(R.id.SLARestantTV);
viewHolder.info = (ImageView) convertView.findViewById(R.id.item_info);
viewHolder.layout = (RelativeLayout) convertView.findViewById(R.id.backgroundRow);
result=convertView;
viewHolder.startTimer(Long.valueOf(TicketModel.getTempsRestantTicket()));
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
result=convertView;
}
Animation animation = AnimationUtils.loadAnimation(mContext, (position > lastPosition) ? R.anim.up_from_bottom : R.anim.down_from_top);
result.startAnimation(animation);
lastPosition = position;
viewHolder.txtName.setText(TicketModel.getTitreTicket());
viewHolder.txtDate.setText(TicketModel.getDateTicket());
viewHolder.txtSLA.setText(TicketModel.getSlaTicket());
//viewHolder.txtTempsRestant.setText(TicketModel.getTempsRestantTicket());
viewHolder.info.setImageResource(getIconUrgence(TicketModel.getUrgenceTicket()));
viewHolder.layout.setBackgroundColor(getColorBG(TicketModel.isTicketEnRetard()));
viewHolder.info.setOnClickListener(this);
viewHolder.info.setTag(position);
System.out.println("Here : "+TicketModel.getTitreTicket()); //getting each item's name
System.out.println("Time = "+TicketModel.getTempsRestantTicket()); //getting each item's time left and it's correct
// Return the completed view to render on screen
return convertView;
}
private int getColorBG(boolean ticketEnRetard) {
int color;
if (ticketEnRetard){
color = Color.parseColor("#3caa0000");
}
else{
color = Color.parseColor("#ffffff");
}
return color;
}
private int getIconUrgence(String urgenceTicket) {
int icon;
if((urgenceTicket.equals("Très basse"))||(urgenceTicket.equals("Basse"))){
icon = R.drawable.basse;
}
else if((urgenceTicket.equals("Haute"))||(urgenceTicket.equals("Très haute"))){
icon = R.drawable.haute;
}
else {
icon = R.drawable.moyenne;
}
return icon;
}
}
答案 1 :(得分：0)
如果要更改值，则不想将TextView声明为静态。
尝试在此方法之外声明它：
public class TicketAdapter extends ArrayAdapter<TicketModel> implements View.OnClickListener{
private ArrayList<TicketModel> dataSet;
Context mContext;
static long timeLeftMS = Long.valueOf(TicketModel.getTempsRestantTicket());
private TextView txtTempsRestant ;
// View lookup cache
private static class ViewHolder {
TextView txtName;
TextView txtType;
TextView txtDate;
TextView txtSLA;
ImageView info;
RelativeLayout layout;
TextView txtTempsRestant ;
}
答案 2 :(得分：0)
嗨，我有一个很好的密码 因为你不需要左右3，....的定义3 textview 您将创建一个TextView并将此代码用于创建
private void Time() {
mCountTimer = new CountDownTimer(aTime, 1000) {
@Override
public void onTick(long millisUntilFinished) {
aMinute = (int) (millisUntilFinished / 1000) / 60;
mSecond = (int) (millisUntilFinished / 1000) % 60;
mTimer.setText(String.format(Locale.getDefault(), "%d:%02d", aMinute, mSecond));
}
@Override
public void onFinish() {
mTimer.setText(String.format(Locale.getDefault(), "%d:%02d", 0, 0));
mSend_Again.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Your EVENT
}
});
}
}.start();
}