开局一张图
都知道我是一个不按常理出牌的同学
放着好好的sqlite语句不用,非得转成json,HHHH
读取sqlite表并转换为json
private JSONArray getResults(String userTable)
{
SQLiteDatabase db = helper.getWritableDatabase();
//or you can use `context.getDatabasePath("my_db_test.db")`
String searchQuery = "SELECT * FROM"+userTable ;
Cursor cursor = db.rawQuery(searchQuery, null );
JSONArray resultSet = new JSONArray();
cursor.moveToFirst();
while (cursor.isAfterLast() == false) {
int totalColumn = cursor.getColumnCount();
JSONObject rowObject = new JSONObject();
for( int i=0 ; i< totalColumn ; i++ )
{
if( cursor.getColumnName(i) != null )
{
try
{
if( cursor.getString(i) != null )
{
Log.d("userTable", cursor.getString(i) );
rowObject.put(cursor.getColumnName(i) , cursor.getString(i) );
}
else
{
rowObject.put( cursor.getColumnName(i) , "" );
}
}
catch( Exception e )
{
Log.d("userTable", e.getMessage() );
}
}
}
resultSet.add(rowObject);
cursor.moveToNext();
}
cursor.close();
return resultSet;
}
调用
Log.d("--------1------", JSONArray.toJSONString(getResults("userTable")));