如何对数据库中的项目进行分组并显示它们 - 安卓
2022-09-01 03:22:27
我在安卓应用程序中有收据和日志模型。收据有很多日志。
我按排序ID和等级查询group_by日志。
//recieve RecepitID and query to group logs
final long forwardedId = (long) getIntent().getExtras().get(String.valueOf("recepitID"));
List<Logs> logsList = new Select().from(Logs.class).where("Receipt = " + forwardedId).groupBy("SortID, Grade").execute();
此分组工作正常。接下来是问题。我需要有这样的输出（红色圆圈中的部分）：
但我得到的是这样的：
这是我如何做到这一点的代码的一部分。
public class LogsRecapitulation extends AppCompatActivity {
private ListView mainListView;
private BaseAdapter listAdapter;
private TextView logsCount;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.recapitulation_listview);
mainListView = (ListView) findViewById(R.id.ListViewItem);
//recieve RecepitID and query to group logs
final long forwardedId = (long) getIntent().getExtras().get(String.valueOf("recepitID"));
List<Logs> logsList = new Select().from(Logs.class).where("Receipt = " + forwardedId).groupBy("SortID, Grade").execute();
TextView result = (TextView) findViewById(R.id.LogMassResult);
double sum = 0.0;
for (int i = 0; i < logsList.size(); i++) {
sum += logsList.get(i).getM3();
}
result.setText(String.format("%.2f m3", sum));
for (int i = 0; i < logsList.size(); i++) {
if (logsList.get(i).receipt.priceType.equals("Na panju")) {
TextView stumpPriceKN = (TextView) findViewById(R.id.sumPriceKN);
double sumPricekn = 0.0;
for (int j = 0; j < logsList.size(); j++) {
sumPricekn += logsList.get(j).price.stumpPrice_kn * logsList.get(j).getM3();
}
stumpPriceKN.setText(String.format("%.2f KN", sumPricekn));
} else {
TextView roadKN = (TextView) findViewById(R.id.sumPriceKN);
double roadPrKn = 0.0;
for (int j = 0; j < logsList.size(); j++) {
roadPrKn += logsList.get(j).price.roadPrice_kn * logsList.get(j).getM3();
}
roadKN.setText(String.format("%.2f KN", roadPrKn));
}
}
for (int i = 0; i < logsList.size(); i++) {
if (logsList.get(i).receipt.priceCorrection > 0 && logsList.get(i).receipt.priceType.equals("Na panju")) {
TextView corecctionPriceKn = (TextView) findViewById(R.id.correctionPriceKN);
double correcSumKN = 0.0;
for (int j = 0; j < logsList.size(); j++) {
correcSumKN += (logsList.get(j).price.stumpPrice_kn * logsList.get(j).getM3()) + ((logsList.get(j).price.stumpPrice_kn * logsList.get(j).getM3()) * logsList.get(j).receipt.priceCorrection / 100);
}
corecctionPriceKn.setText(String.format("%.2f KN", correcSumKN));
} else if (logsList.get(i).receipt.priceCorrection > 0 && logsList.get(i).receipt.priceType.equals("Šumska cesta")) {
TextView corecctionPriceKn = (TextView) findViewById(R.id.correctionPriceKN);
double correcSumKN = 0.0;
for (int j = 0; j < logsList.size(); j++) {
correcSumKN += (logsList.get(j).price.roadPrice_kn * logsList.get(j).getM3()) + ((logsList.get(j).price.roadPrice_kn * logsList.get(j).getM3()) * logsList.get(j).receipt.priceCorrection / 100);
}
corecctionPriceKn.setText(String.format("%.2f KN", correcSumKN));
} else {
TextView priceHolder = (TextView) findViewById(R.id.KorekcijaCijene);
TextView corecctionPriceKn = (TextView) findViewById(R.id.correctionPriceKN);
priceHolder.setText("");
corecctionPriceKn.setText("");
}
}
listAdapter = new RecapitulationArrayAdapter(logsList);
mainListView.setAdapter(listAdapter);
//display logs count
logsCount = (TextView) findViewById(R.id.logsCount);
logsCount.setText(String.valueOf(logsList.size()));
}
private class RecapitulationArrayAdapter extends BaseAdapter {
private LayoutInflater inflater;
private List<Logs> logsList;
public RecapitulationArrayAdapter(List<Logs> logsList) {
inflater = LayoutInflater.from(LogsRecapitulation.this);
this.logsList = logsList;
}
@Override
public int getCount() {
return logsList.size();
}
@Override
public Object getItem(int position) {
return logsList.get(position);
}
@Override
public long getItemId(int position) {
return logsList.get(position).getId();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.logs_recapitulation, parent, false);
}
Logs log = logsList.get(position);
((TextView) convertView.findViewById(R.id.rec_log_sort)).setText(log.sort_id);
((TextView) convertView.findViewById(R.id.rec_log_class)).setText(log.grade);
((TextView) convertView.findViewById(R.id.rec_log_count)).setText(String.valueOf(logsList.size()));
((TextView) convertView.findViewById(R.id.rec_logs_mass)).setText(String.format("%.2f m3", log.getM3()));
if (log.receipt.priceType.equals("Na panju")) {
((TextView) convertView.findViewById(R.id.rec_log_price_default)).setText(String.valueOf(log.price.stumpPrice_kn));
} else {
((TextView) convertView.findViewById(R.id.rec_log_price_default)).setText(String.valueOf(log.price.roadPrice_kn));
}
if (log.receipt.priceType.equals("Na panju")) {
((TextView) convertView.findViewById(R.id.rec_calculated_price)).setText(String.format("%.2f KN", log.price.stumpPrice_kn * log.getM3()));
} else {
((TextView) convertView.findViewById(R.id.rec_calculated_price)).setText(String.format("%.2f KN", log.price.roadPrice_kn * log.getM3()));
}
return convertView;
}
}
}
我正在使用ActiveAndroid并在列表视图中显示它。
问题是显示这些分组的项目。我在BaseAdapter listView中显示它们，它只向我显示每个组一个项目，但它需要向我显示多个项目（因为它在每个组中有超过4个项目）。
任何人都可以给我建议，我应该做些什么来获得像第一张图像一样的输出？
