Question

所以我正在制作一个像应用程序一样的火种我正在做一个硬币系统，其中一个用户默认有20个硬币，然后他向右滑动1个硬币将被添加到总数中，我正在使用edittext来显示硬币金额，我读了关于如何将字符串转换为int的文章，但它似乎没有帮助，应用程序崩溃后，我做了大多数文章说我需要做的，这是我的一些代码，谢谢！

private DatabaseReference usersDb;


ListView listView;
List<cards> rowItems;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mCoins = (EditText) findViewById(R.id.coins);
    String myEditValue = mCoins.getText().toString();
    final int myEditNum = Integer.parseInt(myEditValue);

    usersDb = FirebaseDatabase.getInstance().getReference().child("Users");

    mAuth = FirebaseAuth.getInstance();
    currentUId = mAuth.getCurrentUser().getUid();

    checkUserSex();

    rowItems = new ArrayList<cards>();

    arrayAdapter = new arrayAdapter(this, R.layout.item, rowItems );

    SwipeFlingAdapterView flingContainer = (SwipeFlingAdapterView) findViewById(R.id.frame);

    flingContainer.setAdapter(arrayAdapter);
    flingContainer.setFlingListener(new SwipeFlingAdapterView.onFlingListener() {
        @Override
        public void removeFirstObjectInAdapter() {
            Log.d("LIST", "removed object!");
            rowItems.remove(0);
            arrayAdapter.notifyDataSetChanged();
        }

        @Override
        public void onLeftCardExit(Object dataObject) {

            cards obj = (cards) dataObject;
            String userId = obj.getUserId();
            usersDb.child(userId).child("connections").child("nope").child(currentUId).setValue(true);
            Toast.makeText(MainActivity.this, "Left", Toast.LENGTH_SHORT).show();
        }


        @Override
        public void onRightCardExit(Object dataObject) {
            cards obj = (cards) dataObject;
            String userId = obj.getUserId();
            usersDb.child(userId).child("connections").child("yeps").child(currentUId).setValue(true);
            isConnectionMatch(userId);
            Toast.makeText(MainActivity.this, "Right", Toast.LENGTH_SHORT).show();


            mCoins.setText(myEditNum+ "1");

        }

`

Answer 1

通过这种方式连接

myEditNum+ "1"

将您的字符串和int移动到onRightCardExit方法，并将总和：

String myEditValue = mCoins.getText().toString();
final int myEditNum = Integer.parseInt(myEditValue);
mCoins.setText(String.valueOf(myEditNum+1));

当我将字符串转换为int时，我的android工作室崩溃了

1 个答案: