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package 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);
}
}
我正在使用Android SQLite數據庫。在我的顯示類中，它讀取數據庫中的所有條目，並在每個條目旁邊顯示更新按鈕。該條目更新按鈕的標籤具有條目Patient.ID。當用戶點擊更新時，他們被帶到更新類，他們可以選擇他們想要更新的內容，名字，姓氏，公寓，房間。之後，他們點擊更新，然後他們被帶回到Display類，他們應該看到更改。但是，當他們被收回時，以前的價值仍然存在，變化不會顯現，我錯過了什麼？Android SQLite更新查詢 - 我丟失了什麼
你是什麼意思的「收回」？...你的意思是按下後退按鈕？ – 2012-04-13 01:25:51
是的。當用戶按下UpdatePatient表單上的更新時。 – Nexusfactor 2012-04-13 01:36:53
使用startActivityForResults開始活動。將結果讀入onCreate，然後將值分配給您的視圖 – 2012-04-13 01:39:42