Question

我有这个光标在这里搜索联系人数据库：

String name_to_search = edittext.getText().toString();    
String select = "(" + ContactsContract.Contacts.DISPLAY_NAME + " == \"" +name_to_search+ "\" )";
                        Cursor c = this.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, CONTACTS_SUMMARY_PROJECTION, select, null, ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
                        this.startManagingCursor(c);

但如果edittext中的名称为john smith且联系人DB中的名称为John Smith，则不会得到任何结果。

如何使光标不检查区分大小写？

Answer 1

如果您的DBMS支持函数UPPER（），您可以执行以下操作：

String name_to_search = edittext.getText().toString().toUpperCase();    
String select = "(UPPER(" + ContactsContract.Contacts.DISPLAY_NAME + ") == \"" +name_to_search+ "\" )";
                            Cursor c = this.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, CONTACTS_SUMMARY_PROJECTION, select, null, ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
                            this.startManagingCursor(c);

Answer 2

 public String[]  fetechRatio()//Search from database table WITH WHERE CONDITION
{
    mDb= mHelper.getReadableDatabase();
    String[] columns = new String[]{mHelper.COL_VALUE};
    Cursor cursor=mDb.rawQuery("SELECT "+mHelper.COL_VALUE+" FROM " +mHelper.Table_Name + " WHERE " + mHelper.COL_HEAD + " = '" + alphbet + "' ORDER BY " + mHelper.COL_HEAD + " ", null);
    String name[] =new String[cursor.getCount()];
    cursor.moveToFirst();
    value=cursor.getString(cursor.getColumnIndex(mHelper.COL_VALUE));
    return name;
}

就这样使用..你的情况。

在联系人数据库中搜索名称不区分大小写的名称

2 个答案: