來自SQLite的組列項（Android）

Question

我有一系列的listview是從存儲在手機上的SQLite數據庫中的數據中生成的。比方說表是這樣的：

__________________________________________ 
| ID |  X | Y |  Z | 
|________|__________|_________|__________| 
| 1 | ABC | 123 | B94 | 
| 2 | ABC | 234 | C33 | 
| 3 | DEF | 567 | N72 | 
| 4 | DEF | 789 | K12 | 
|________|__________|_________|__________|... 

我想創建列「X」的列表視圖，並且點擊時，打開了一個與它相關聯的行中的一個新的列表視圖中列「Y」的數據。棘手的部分是我想在列表視圖中將每列中的相同項目分組在一起。在這個例子中，第一個列表視圖只有兩個項目「ABC; DEF」，當點擊「ABC」時，它將在下一個列表視圖中顯示「123; 234」項目。

繼承人我的代碼（是的，我修改了其中大部分來自教程！）：

listviewactivity.java

public class listviewactivity extends Activity {  
private SQLiteAdapter mySQLiteAdapter; 
ListView listContent; 
SimpleCursorAdapter cursorAdapter; 
Cursor cursor; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    setContentView(R.layout.expenses); 
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); 

    listContent = (ListView)findViewById(R.id.contentlist); 
    mySQLiteAdapter = new SQLiteAdapter(this); 
    mySQLiteAdapter.openToWrite();   

    cursor = mySQLiteAdapter.queueAll(); 
    String[] from = new String[]{SQLiteAdapter.KEY_ID, SQLiteAdapter.KEY_CONTENT1, SQLiteAdapter.KEY_CONTENT2}; 
    int[] to = new int[]{R.id.id, R.id.text1, R.id.text2}; 
    cursorAdapter = 
    new SimpleCursorAdapter(this, R.layout.row, cursor, from, to); 
    listContent.setAdapter(cursorAdapter);  


} 

@Override 
protected void onDestroy() { 
    // TODO Auto-generated method stub 
    super.onDestroy(); 
    mySQLiteAdapter.close(); 
} 
} 

SQLiteAdapter.java

public class SQLiteAdapter { 
public static final String MYDATABASE_NAME = "MY_DATABASE"; 
public static final String MYDATABASE_TABLE = "MY_TABLE"; 
public static final int MYDATABASE_VERSION = 1; 
public static final String KEY_ID = "_id"; 
public static final String KEY_CONTENT1 = "Content1"; 
public static final String KEY_CONTENT2 = "Content2"; 
public static final String KEY_CONTENT3 = "Content3"; 
public static final String KEY_CONTENT4 = "Content4"; 
public static final String KEY_CONTENT5 = "Content5"; 
public static final String KEY_CONTENT6 = "Content6"; 
public static final String KEY_CONTENT7 = "Content7"; 
public static final String KEY_CONTENT8 = "Content8"; 

private static final String SCRIPT_CREATE_DATABASE = 
"create table " + MYDATABASE_TABLE + " (" 
+ KEY_ID + " integer primary key autoincrement, " 
+ KEY_CONTENT1 + " text not null, " 
+ KEY_CONTENT2 + " text not null," 
+ KEY_CONTENT3 + " text not null, " 
+ KEY_CONTENT4 + " text not null," 
+ KEY_CONTENT5 + " text not null, " 
+ KEY_CONTENT6 + " text not null," 
+ KEY_CONTENT7 + " text not null," 
+ KEY_CONTENT8 + " text not null);"; 

private SQLiteHelper sqLiteHelper; 
private SQLiteDatabase sqLiteDatabase; 
private Context context; 
public SQLiteAdapter(Context c){ 

context = c; 

} 

public SQLiteAdapter openToRead() throws android.database.SQLException { 
sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION); 
sqLiteDatabase = sqLiteHelper.getReadableDatabase(); 
return this; 

} 

public SQLiteAdapter openToWrite() throws android.database.SQLException { 
sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION); 
sqLiteDatabase = sqLiteHelper.getWritableDatabase(); 
return this; 

} 

public void close(){ 
sqLiteHelper.close(); 
} 

public long insert(String content1, String content2, String content3, 
       String content4, String content5, String content6, 
          String content7, String content8){ 

ContentValues contentValues = new ContentValues(); 
contentValues.put(KEY_CONTENT1, content1); 
contentValues.put(KEY_CONTENT2, content2); 
contentValues.put(KEY_CONTENT3, content3); 
contentValues.put(KEY_CONTENT4, content4); 
contentValues.put(KEY_CONTENT5, content5); 
contentValues.put(KEY_CONTENT6, content6); 
contentValues.put(KEY_CONTENT7, content7); 
contentValues.put(KEY_CONTENT8, content8); 

return sqLiteDatabase.insert(MYDATABASE_TABLE, null, contentValues); 
} 

public int deleteAll(){ 
return sqLiteDatabase.delete(MYDATABASE_TABLE, null, null); 
} 
public Cursor queueAll(){ 
String[] columns = new String[]{KEY_ID, KEY_CONTENT1, KEY_CONTENT2, KEY_CONTENT3, 
           KEY_CONTENT4, KEY_CONTENT5, KEY_CONTENT6, 
             KEY_CONTENT7, KEY_CONTENT8}; 

Cursor cursor = sqLiteDatabase.query(MYDATABASE_TABLE, columns, 
null, null, null, null, null, null); 
    return cursor; 

} 

public class SQLiteHelper extends SQLiteOpenHelper { 
public SQLiteHelper(Context context, String name, 
CursorFactory factory, int version) { 
super(context, name, factory, version); 

} 

@Override 
public void onCreate(SQLiteDatabase db) { 
// TODO Auto-generated method stub 
db.execSQL(SCRIPT_CREATE_DATABASE); 
} 

@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
// TODO Auto-generated method stub 
    } 

    } 

} 

所以這只是基本上將一堆信息存儲在一個將光標加載到al中的表中istview。如果任何人都可以使用我的OnItemClickListener或將列項目組合在一起，那將會非常棒！

Answer 1

你必須設置一個新的listadaper限制的結果，一切都與ABC

例如：

Cursor c = sqlLiteDatabase.query(MYDATABASE_TABLE, 
new String[] {KEY_ID,COLUMN_Y}, 
COLUMN_X + "=" + ITEM_IN_COLUMN_X_CLICKED, 
null,null,null); 

關鍵是在查詢中where，要查詢與所有項目項目點擊即。 COLUMN_X + "=" + ITEM_IN_COLUMN_X_CLICKED。

所以如果你點擊ABC新的列表會帶來了一切column y與ABC在column x