このすべての緯度の値を表示する方法

Question

SQLiteデータベースから緯度データを取得しています。

私は経度と緯度の値でいっぱいのテーブルを持っています。

私のクエリは次のとおりです。

public Cursor fetchAllCountries() { 
    SQLiteDatabase db=this.getReadableDatabase(); 
    String SelectQuery="select * from "+ TABLE_NAME; 
    Cursor mCursor = db.rawQuery(SelectQuery,null); 
    if (mCursor != null) { 
     mCursor.moveToFirst(); 
    } 
    return mCursor; 
} 

私MainActivity.javaは含まれています

Cursor cursor = myDB.fetchAllCountries(); 

/* for (int i=0;i<list.size();i++) { 
    double data=list.get(i); 
    System.out.println(data + " "); 
}*/ 

if (cursor.moveToFirst()) { 
    do { 
     double data = cursor.getDouble(cursor.getColumnIndex("lat")); 
     System.out.println(data + " "); 
    } while(cursor.moveToNext()); 
} 

Answer 1

public Cursor fetchAllCountries() { 
    SQLiteDatabase db=this.getReadableDatabase(); 
    String SelectQuery="select * from "+ TABLE_NAME; 
    Cursor mCursor = db.rawQuery(SelectQuery,null); 
    if (mCursor != null) { 
     mCursor.moveToFirst(); 
    } 
    return mCursor; 
} 

MainActivity.java

TextView txt = (TextView) findViewById(R.id.textView); 
Cursor cursor = myDB.fetchAllCountries(); 

double[] array = new double[cursor.getCount()]; 
int i = 0; 

if (cursor.moveToFirst()) { 
    do { 
     double data = cursor.getDouble(cursor.getColumnIndex("lat")); 
     array[i] = data; 
     txt.append(Double.toString(array[i])); 

     i++; 
    } while (cursor.moveToNext()); 
} 

Answer 2

これは一例です。

private static List<Information> getAllInformation(Cursor cursor) { 
    List<Information> list = new ArrayList<>(); 
    if (cursor != null) { 
     if (cursor.moveToFirst()) { 
      do { 
       int id = cursor.getInt(cursor.getColumnIndex(COL_ID)); 
       String title = cursor.getString(cursor.getColumnIndex(COL_TITLE)); 
       String mediaName = cursor.getString(cursor.getColumnIndex(COL_MEDIA_NAME)); 
    Information info = new Information(id, title, mediaName); 
       list.add(info); 
      } while (cursor.moveToNext()); 
     } 
     if (!cursor.isClosed()) { 
      cursor.close(); 
     } 
    } 
    return list; 
} 

public static List<Information> getAllInformation() { 
    String sql = "SELECT * FROM " + TABLE_NAME; 
    SQLiteDatabase database = this.getReadableDatabase(); 
    Cursor cursor = database.rawQuery(sql, null); 
    return getAllInformation(cursor); 
} 

活動における

List<Information> mListAll; 
mListAll = YourNameTable.getAllInformation(); 

クラスInformation.class

public class Information { 
int id; 
String title; 
String mediaName; 

//get 
//set 

}