我正在使用intent.getExtra()...来获取int值,我想在where子句中使用它。所以如何做,因为它只需要字符串作为参数。
String keyvalue;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mobile);
keyvalue = getIntent().getExtras().getInt("key")
public ArrayList<HashMap<String,String>> getAllMobiles() {
ArrayList <HashMap<String,String>> wordlist;
wordlist= new ArrayList <HashMap<String, String>>();
String Query = "SELECT * FROM subcategories WHERE _id =?";
SQLiteDatabase database = sql.getWritableDatabase();
Cursor cursor = database.rawQuery(Query, new String[] {keyvalue});
if (cursor.moveToFirst()) {
do {
HashMap<String,String> map = new HashMap<String, String>();
map.put(Sqlite.SUBCATEGORY_NAME, cursor.getString(2));
wordlist.add(map);
} while (cursor.moveToNext());
答案 0 :(得分:1)
要将int转换为字符串,请使用例如
String.valueOf(keyvalue)
所以查询变为
Cursor cursor = database.rawQuery(Query, new String[] { String.valueOf(keyvalue) });
答案 1 :(得分:0)
只需将整数值解析为字符串并将其添加到sql Query
即可