Android SQLite更新查询-我缺少什么 package lab.ex1； 导入java.util.ArrayList； 导入java.util.List； 导入android.content.Intent； 导入android.database.

Android SQLite更新查询-我缺少什么

package lab.ex1；
导入java.util.ArrayList；
导入java.util.List；
导入android.content.Intent；
导入android.database.Cursor；
导入android.database.sqlite.SQLiteDatabase；
导入android.database.sqlite.SQLiteQueryBuilder；
导入android.os.Bundle；
导入android.view.view；
导入android.view.ViewGroup；
导入android.widget.Button；
导入android.widget.TableLayout；
导入android.widget.TableRow；
导入android.widget.TextView；
导入lab.ex1.HospitalDatabase.Patient；
公共类DisplayPatient扩展了医院活动{
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.display）；
显示数据（）；
}
私有void displayData（）
{
最终列表myList=新的ArrayList（）；
最终意图me=新意图（DisplayPatient.this、UpdatePatient.class）；
最终捆绑包b=新捆绑包（）；
//培养新病人
PatientData构建=新建PatientData（）；
最终的TableLayout视图数据=（TableLayout）findViewById（R.id.tblDisplay）；
SQLiteQueryBuilder queryBuilder=newsqlitequerybuilder（）；
queryBuilder.setTables（Patient.patientTableName）；
SQLiteDatabase db=mDatabase.getReadableDatabase（）；
字符串asColumnsToReturn[]={Patient.patientTableName+“+Patient.ID，
Patient.patientTableName+“+”Patient.firstName，
Patient.patientTableName+“+”Patient.lastName，
Patient.patientTableName+“+”Patient.room，
Patient.patientTableName+“+”Patient.department}；
游标c=queryBuilder.query（db，asColumnsToReturn，null，null，null，Patient.DEFAULT\u SORT\u ORDER）；
if（c.moveToFirst（））
{
对于（int i=0；ipackage lab.ex1;





import java.util.ArrayList;
import java.util.List;

import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import lab.ex1.HospitalDatabase.Patient;

public class DisplayPatient extends HospitalActivity {


    @Override


    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.display);
        displayData();




    }




    private void displayData()
    {

         final List<Integer> myList = new ArrayList<Integer>();
         final Intent me = new Intent(DisplayPatient.this,UpdatePatient.class);
         final Bundle b = new Bundle();


        //Build new Patient
        PatientData build = new PatientData();

        final TableLayout viewData = (TableLayout)findViewById(R.id.tblDisplay);

        SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();
        queryBuilder.setTables(Patient.patientTableName);


        SQLiteDatabase db = mDatabase.getReadableDatabase();

        String asColumnsToReturn[] = {Patient.patientTableName + "." + Patient.ID, 
                                      Patient.patientTableName + "." + Patient.firstName, 
                                      Patient.patientTableName + "." + Patient.lastName,
                                      Patient.patientTableName + "." + Patient.room,
                                      Patient.patientTableName + "." + Patient.department}; 




        Cursor c = queryBuilder.query(db,asColumnsToReturn,null,null,null,null,Patient.DEFAULT_SORT_ORDER);



        if (c.moveToFirst())
        {
            for (int i=0; i< c.getCount(); i++)
            {
                final TableRow newRow = new TableRow(this);
                Button update = new Button(this);
                TextView display = new TextView(this);


                display.setTextSize(15);

                    update.setX(15);
                    update.setY(10);
                    update.setTextSize(10);


                Button deleteButton = new Button(this);

                deleteButton.setX(100);
                deleteButton.setY(100);
                deleteButton.setTextSize(10);

                deleteButton.setText("Delete");
                update.setText("Update");
                deleteButton.setTag(c.getInt(c.getColumnIndex(Patient.ID)));

                update.setTag(c.getInt(c.getColumnIndex(Patient.ID)));
                newRow.setTag(c.getInt(c.getColumnIndex(Patient.ID)));      // set the tag field on the TableRow view so we know which row to delete

                myList.add(c.getInt(c.getColumnIndex(Patient.ID)));


                build.setID(Integer.parseInt(c.getString(c.getColumnIndex((Patient.ID)))));
                build.setFirstName((c.getString(c.getColumnIndex(Patient.firstName))));
                build.setLastName(c.getString(c.getColumnIndex(Patient.lastName)));
                build.setDepartment(c.getString(c.getColumnIndex(Patient.department)));
                build.setRoom(Integer.parseInt(c.getString(c.getColumnIndex(Patient.room))));





                deleteButton.setOnClickListener(new View.OnClickListener() {

                    public void onClick(View v) {
                        Integer id = (Integer) v.getTag();
                        deletePatient(id);
                        final TableLayout patientTable = (TableLayout) findViewById(R.id.tblDisplay);

                        View viewToDelete = patientTable.findViewWithTag(id);
                        viewData.removeView(viewToDelete);

                    }
                });

                update.setOnClickListener(new View.OnClickListener() {

                    public void onClick(View v) {
                        // TODO Auto-generated method stub
                        Integer id = (Integer)v.getTag();
                        final TableLayout patientRmv = (TableLayout)findViewById(R.id.tblDisplay);


                        for (Integer delete : myList )
                        {
                            View viewToDelete = patientRmv.findViewWithTag(delete);
                            viewData.removeView(viewToDelete);
                        }

                        b.putString("key", Integer.toString(id));
                        me.putExtras(b);
                        startActivity(me);

                    }
                });


                display.setText(build.toString());
                newRow.addView(display);
                newRow.addView(update);
                //newRow.addView(deleteButton);

                viewData.addView(newRow);
                c.moveToNext();


            }

        }

        else
        {
            TableRow newRow = new TableRow(this);
            TextView noResults = new TextView(this);
            noResults.setText("No results to show.");
            newRow.addView(noResults);
            viewData.addView(newRow);
        }
        c.close();
        db.close();



    }

    public void deletePatient(Integer id)
    {

            SQLiteDatabase db = mDatabase.getWritableDatabase();
            String astrArgs[] = { id.toString() };
            db.delete(Patient.patientTableName, Patient.ID+ "=?",astrArgs );  
            db.close();
    }



}



package lab.ex1;


import lab.ex1.HospitalDatabase.Patient;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;



public class UpdatePatient extends HospitalActivity {







     Spinner spinner;
     TextView update;
     String up;
     Button check;

     EditText entry;
     String setPosition;
     TextView updateID;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.updatepatient);

        check = (Button)findViewById(R.id.btnUpdate);

        entry = (EditText)findViewById(R.id.editUpdate);
        updateID = (TextView)findViewById(R.id.txtIDUpdate);




         Bundle accept = getIntent().getExtras();

         up = accept.getString("key","0");

         updateID.setText(null);
         updateID.setText("ID: "  + up);


        update = (TextView)findViewById(R.id.txtUpdateMessage);
        update.setText(null);
       // update.setText(up);
         spinner = (Spinner) findViewById(R.id.spnChoice);
         ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
                    this, R.array.arrFields, android.R.layout.simple_spinner_item);
            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner.setAdapter(adapter);

          spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());



          check.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {

                    updateDB(entry.getText().toString(),setPosition,up);

                }
            });




    }








    public class MyOnItemSelectedListener implements OnItemSelectedListener {

        public void onItemSelected(AdapterView<?> adapterView,
            View view, int pos, long id) {

            update.setText(null);
            update.setText("I will update On " + adapterView.getItemAtPosition(pos).toString());
            setPosition = adapterView.getItemAtPosition(pos).toString();


        }

        public void onNothingSelected(AdapterView parent) {
          // Do nothing.
        }


    }




    public void updateDB(String valuesToUpdate, String field,String ID)
    {




        SQLiteDatabase db = mDatabase.getWritableDatabase();
        db.beginTransaction();
        try
        {
            ContentValues updatePatient = new ContentValues();

            if (field == "First Name")
            {
                updatePatient.put(Patient.firstName, valuesToUpdate);
                String astrArgs[] = { up.toString() };
                db.update(Patient.patientTableName,updatePatient, Patient.ID+"=?", astrArgs);
                //
                db.setTransactionSuccessful();
            }

        }


        finally
        {
            db.endTransaction();
        }


        db.close();


        Intent me = new Intent(UpdatePatient.this,DisplayPatient.class);
        startActivity(me);

    }
}