如何将检索到的数据传递给 editText？

Question

大家好。谁能告诉我如何检索从 SQLite 到 editText 的数据？我提到了 Android::Data are not retrieving to EditText field through Database 但它对我不起作用..

DisplayData.java

private void BuildTable(String names,String date1)
    {
        final String name = names;
        final String date=date1;
        sqlcon.open();
        Cursor c = sqlcon.readEntry(name);

        int rows = c.getCount();
        int cols = c.getColumnCount();

        c.moveToFirst();

        TableRow rowDayLabels=new TableRow(this);
        TextView weather=new TextView(this);
        weather.setText("Weather");
        weather.setTypeface(Typeface.SERIF, Typeface.BOLD);

        TextView dater=new TextView(this);
        dater.setText("Date");
        dater.setTypeface(Typeface.SERIF, Typeface.BOLD);

        TextView status=new TextView(this);
        status.setText("Status");
        status.setTypeface(Typeface.SERIF, Typeface.BOLD);

        TextView timeIn=new TextView(this);
        timeIn.setText("Time In");
        timeIn.setTypeface(Typeface.SERIF, Typeface.BOLD);

        TextView timeOut=new TextView(this);
        timeOut.setText("Time Out");
        timeOut.setTypeface(Typeface.SERIF, Typeface.BOLD);

        rowDayLabels.addView(weather);
        rowDayLabels.addView(dater);
        rowDayLabels.addView(status);
        rowDayLabels.addView(timeIn);
        rowDayLabels.addView(timeOut);
        table_layout.addView(rowDayLabels);


        // outer for loop



        for (int i = 0; i < rows; i++) {

            TableRow row = new TableRow(this);
            row.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT));

            // inner for loop
            for (int j = 0; j < cols; j++) {

                TextView tv = new TextView(this);
                tv.setLayoutParams(new TableRow.LayoutParams(
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT
                ));
               // tv.setBackgroundResource(R.drawable.cell_shape);
                tv.setGravity(Gravity.CENTER);
                tv.setTextSize(18);
                tv.setPadding(0, 5, 0, 5);

                tv.setText(c.getString(j));

                row.addView(tv);
                row.setBackgroundColor(Color.GREEN);

                row.setOnClickListener(new View.OnClickListener() {

                    public void onClick(View v) {
                        Intent intent = new Intent(DisplayData.this, UpdatePage.class);
                        intent.putExtra("name", name);
                        intent.putExtra("date",date);
                        startActivity(intent);
                    }
                });

            }

            c.moveToNext();

            table_layout.addView(row);


        }
        sqlcon.close();
    }

        }

UpdateDetails.java

package com.example.project.project;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;

import com.example.project.project.API.InfoAPI;
import com.example.project.project.TimeSheet.Details;
import com.example.project.project.TimeSheet.Force;
import com.example.project.project.TimeSheet.Info;
import com.example.project.project.database.MyDatabaseHelper;

public class UpdatePage extends AppCompatActivity {
    InfoAPI sqlcon;
    private SQLiteDatabase database;
    private MyDatabaseHelper dbHelper;
    private Cursor c;


    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        dbHelper = new MyDatabaseHelper(this);
        setContentView(R.layout.updatepage);
        final String name1 = getIntent().getExtras().getString("name");
        final String date = getIntent().getExtras().getString("date");
        RetrievePage(name1, date);
    }


    public void RetrievePage(String name, String date) {
        final String name2 = name;
        final String date2 = date;
        final EditText name3 = (EditText) findViewById(R.id.editText9);
        final EditText date3 = (EditText) findViewById(R.id.editText12);
        name3.setText(name2);
        date3.setText(date2);
        //final Spinner weather3 = (Spinner) findViewById(R.id.spinner5);
        //final Spinner status3 = (Spinner) findViewById(R.id.spinner7);
        final EditText subC3 = (EditText) findViewById(R.id.editText17);
        final EditText noP = (EditText) findViewById(R.id.editText18);
        final EditText noH = (EditText) findViewById(R.id.editText19);
        final Spinner poject3 = (Spinner) findViewById(R.id.spinner8);
        database = dbHelper.getWritableDatabase();
        c = database.rawQuery("SELECT w.Subcontractors, w.NumberOfPerson, w.NumberOfHours FROM Information i LEFT JOIN WorkForce w ON w.TInfo_id = i.ID WHERE i.Name = ? AND i.Date= ? ",
                new String[]{String.valueOf(name2),String.valueOf(date2)}, null);
        if (c != null) {
            c.moveToFirst();
            while (c.moveToNext()) {
                Info I = new Info();
                Details WD = new Details();

               // String Weather = c.getString(c.getColumnIndexOrThrow(MyDatabaseHelper.Weather));
                //String Status = c.getString(c.getColumnIndexOrThrow(MyDatabaseHelper.Status));
                String SubC = c.getString(c.getColumnIndex(MyDatabaseHelper.Subcontractors));
                String NoP = c.getString(c.getColumnIndex(MyDatabaseHelper.NumberOfPerson));
                String NoH = c.getString(c.getColumnIndex(MyDatabaseHelper.NumberOfHours));
                Force WF = new Force();
                WF.setSubcontractors(SubC);
                WF.setNoOfPerson(NoP);
                WF.setNoOfHours(NoH);
                subC3.setText(SubC);
                noP.setText(NoP);
                noH.setText(NoH);

            }

        }
        c.close();


    }
    }

Force.java

public class Force {

    private int id1;
    private String subcontractors;
    private String noOfPerson;
    private String noOfHours;

    public void setID(int  id1)
    {
        this.id1=id1;
    }

    public int getID()
    {
        return this.id1;
    }

    public void setSubcontractors(String subcontractors)
    {
        this.subcontractors=subcontractors;
    }

    public String getSubcontractors()
    {
        return this.subcontractors;
    }

    public void setNoOfPerson(String noOfPerson)
    {
        this.noOfPerson=noOfPerson;
    }

    public String getNoOfPerson()
    {
        return this.noOfPerson;
    }

    public void setNoOfHours(String noOfHours)
    {
        this.noOfHours=noOfHours;
    }

    public String getNoOfHours()
    {
        return this.noOfHours;
    }



}

我错过了什么吗？请告诉我！任何建议都会很棒。谢谢

Answer 1

如果您希望游标中只返回一行，则不应在执行操作之前立即调用 moveTofirst 和 moveToNext。通过立即调用这些函数，您将移动到光标中的第二行。我的猜测是你的游标只有一行，而你在 while 循环中的代码没有被执行。错误可能在这里

if (c != null) {
   c.moveToFirst();
   while (c.moveToNext()) {
       Info I = new Info();
   }
}

你应该这样做

if (c != null) {
   while (c.moveToNext()) {
       Info I = new Info();
   }
}

如何将检索到的数据传递给 editText？

How to pass retrieved data to editText?

java

sqlite

android

cursor

textview