我正在使用 extras 在实例之间传递一个变量,并且我启动了该变量,但是 android studio 给我一个错误,说它可能没有被初始化......
public class TasteNotePage extends ActionbarMenu {
String beerID = "a";
Dialog dialog = null;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tastenote_page);
//get beer data
Intent intent = getIntent();
Bundle b = intent.getExtras();
beerID = b.getString("id");
//get beer name, get our review if you have one, get all reviews and set
//check if user has beer
String url2 = "myURL";
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
String userID = prefs.getString("userID", null);
String userURLComp = "x=" + userID;
String beerID = "&z=" + beerID;
错误发生在上面代码最后一行的 beerID 处。知道如何解决这个问题吗?