0
これはリストビューのonclickリスナーを示しています。アイテムをクリックするとダイアログを開き、sqlite情報を表示したいと思います。リストビューアイテムをクリックすると、日付とノートが表示されます。以下は私の試みですが、うまくいきません。また、私はかなりAndroidプログラミングに新しいので、あなたが私のために非常に役立つだろうコードで問題を並べ替えることができる場合。sqliteデータベースから特定のデータを読み込み、リストビュー項目をクリックしたときにダイアログに表示する方法を教えてください。
ListAdapter adapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1, listData);
mListView.setAdapter(adapter);
//set an onItemClickListener to the ListView
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String name = adapterView.getItemAtPosition(i).toString();
Log.d(TAG, "onItemClick: You Clicked on " + name);
Cursor data = mDatabaseHelper.getexpenseItemID(name); //get the id associated with that name
int itemID = -1;
while(data.moveToNext()){
itemID = data.getInt(0);
}
if(itemID > -1){
displayNoteDate(mDatabaseHelper.getexpenseNote(data2),mDatabaseHelper.getexpenseDate(data1));
}
else{
toastMessage("No ID associated with that name");
}
}
});
public void displayNoteDate(String noteContent, String dateValue) {
final Dialog builder = new Dialog(getActivity());
builder.setContentView(R.layout.custom_dialog);
builder.setTitle("Display note date");
TextView note = (TextView)builder.findViewById(R.id.note);
TextView date = (TextView)builder.findViewById(R.id.date);
//add the database note and date
note.setText(noteContent);
date.setText(dateValue);
Button closeButton = (Button)builder.findViewById(R.id.close);
closeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
builder.dismiss();
}
});
builder.show();
}
DatabaseHelper.java
public class DatabaseHelper extends SQLiteOpenHelper {
private static final String TAG = "DatabaseHelper";
public static final String DATABASE_NAME = "budget.db";
public static final String TABLE_NAME = "expense_table";
public static final String TABLE_NAME2 = "income_table";
public static final String COL_1 = "ID";
public static final String COL_2 = "ID2";
public static final String EXPENSE_AMOUNT = "AMOUNT";
public static final String EXPENSE_DATE = "DATE";
public static final String EXPENSE_NOTES = "NOTES";
public static final String INCOME_AMOUNT = "AMOUNT";
public static final String INCOME_DATE = "DATE";
public static final String INCOME_NOTES = "NOTES";
public DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, 3);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table " + TABLE_NAME + " (ID INTEGER PRIMARY KEY AUTOINCREMENT,AMOUNT INTEGER,DATE INTEGER,NOTES TEXT)");
db.execSQL("create table " + TABLE_NAME2 + " (ID INTEGER PRIMARY KEY AUTOINCREMENT,AMOUNT INTEGER,DATE INTEGER,NOTES TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME2);
onCreate(db);
}
public boolean insertexpenseData(String amount_expense, String date_expense, String notes_expense) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(EXPENSE_AMOUNT, amount_expense);
contentValues.put(EXPENSE_DATE, date_expense);
contentValues.put(EXPENSE_NOTES, notes_expense);
long result = db.insert(TABLE_NAME, null, contentValues);
if (result == -1)
return false;
else
return true;
}
public boolean insertincomeData(String amount_income, String date_income, String notes_income) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(INCOME_AMOUNT, amount_income);
contentValues.put(INCOME_DATE, date_income);
contentValues.put(INCOME_NOTES, notes_income);
long result = db.insert(TABLE_NAME2, null, contentValues);
if (result == -1)
return false;
else
return true;
}
public Cursor getexpenseData() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor res = db.rawQuery("select * from " + TABLE_NAME, null);
return res;
}
public Cursor getincomeData() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor res = db.rawQuery("select * from " + TABLE_NAME2, null);
return res;
}
public Cursor getexpenseDate(Cursor date){
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT * FROM " + TABLE_NAME + " WHERE " + EXPENSE_DATE + " = '" + date + "'";
Cursor data1 = db.rawQuery(query, null);
return data1;
}
public Cursor getexpenseNote(Cursor note){
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT * FROM " + TABLE_NAME + " WHERE " + EXPENSE_NOTES + " = '" + note + "'";
Cursor data2 = db.rawQuery(query, null);
return data2;
}
public Cursor getexpenseItemID(String name){
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT " + COL_1 + " FROM " + TABLE_NAME + " WHERE " + EXPENSE_AMOUNT + " = '" + name + "'";
Cursor data = db.rawQuery(query, null);
return data;
}
public Cursor getincomeItemID(String name){
SQLiteDatabase db = this.getWritableDatabase();
String query = "SELECT " + COL_2 + " FROM " + TABLE_NAME2 + " WHERE " + INCOME_AMOUNT + " = '" + name + "'";
Cursor data = db.rawQuery(query, null);
return data;
}
public boolean updateexpenseData(String id, String amount, String date, String notes) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(COL_1, id);
contentValues.put(EXPENSE_AMOUNT, amount);
contentValues.put(EXPENSE_DATE, date);
contentValues.put(EXPENSE_NOTES, notes);
db.update(TABLE_NAME, contentValues, "ID = ?", new String[]{id});
return true;
}
public boolean updateincomeData(String id, String amount, String date, String notes) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put(COL_2, id);
contentValues.put(INCOME_AMOUNT, amount);
contentValues.put(INCOME_DATE, date);
contentValues.put(INCOME_NOTES, notes);
db.update(TABLE_NAME2, contentValues, "ID = ?", new String[]{id});
return true;
}
public Integer deleteexpenseData(String id) {
SQLiteDatabase db = this.getWritableDatabase();
return db.delete(TABLE_NAME, "ID = ?", new String[]{id});
}
public Integer deleteincomeData(String id) {
SQLiteDatabase db = this.getWritableDatabase();
return db.delete(TABLE_NAME2, "ID = ?", new String[]{id});
}
}
