java - 如何在 `setOnItemClickListener(...` 内调用多个方法

Question

我有一个 GridView 设置，并且我已经实现了 setOnItemClickListener 接口(interface)。首先，我做了一些 Toast 只是为了反馈，然后我继续调用我的方法。第一种方法有效，我将其放入 while 循环中，该循环将调用它，直到它返回 true。第二种方法在插入代码时会完全阻止第一种方法工作，但我没有收到任何编译器错误。

这是我的 onCreate ，其中包含 setOnItemClickListener() 我想插入注释掉的第二个方法:

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    GridView gridview = (GridView) findViewById(R.id.gridview);
    gridview.setAdapter(new ImageAdapter(this));

    final GameplayController gc = new GameplayController(this);

    // Create board model, add units to player's list.
    final UnitArray gameBoardModel = new UnitArray();

    gridview.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v,
                int position, long id) {
            Toast.makeText(MainActivity.this, "" + position,
                    Toast.LENGTH_SHORT).show();
            boolean next = false;
            while (next == false) {
                next = gc.choosePiece(position, gameBoardModel,
                        (ImageView) v);
            }
            /*next = false;
            while (next == false) {
                next = gc.chooseEmpty(position, gameBoardModel,
                        (ImageView) v);
            }*/
        }
    });
}

我说第一个方法“有点”有效，因为它是一种方法，它将检查所选 GridView 中的位置是否是“允许的”选择，并将更新 ImageView 在该选择上，然后返回 true，否则它将返回 false，其想法是它将循环直到用户做出“有效”选择。现在，如果做出了有效的选择，它确实会相应地更新选择处的 ImageView，但是当做出“无效”选择时，它只会卡住。

所以它“有点”有效，但是当我插入第二个方法时，即使做出“有效”选择，它也会卡住，并且永远不会进入第二个方法。

我认为关于 onItemClickListener() 我缺少一些东西。

--------------------------编辑--------------------附录--------------

如果它有助于查看我调用的第一个方法，

public boolean choosePiece(int position, UnitArray ua, ImageView iv) {
    if (ua.checkPiece(pNum, position) == true) {
        if (ua.checkType(position, "rock")) {
            ImageView v = iv;
            v.setImageResource(R.drawable.rock1select);
            return true;
        }
        if (ua.checkType(position, "paper")) {
            iv.setImageResource(R.drawable.paper1select);
            return true;
        }
        if (ua.checkType(position, "scissors")) {
            iv.setImageResource(R.drawable.scissors1select);
            return true;
        }
    }
    /*
     * With just the IF statements above catching the correct selections, my
     * program crashes. I thought simply adding the RETURN FALSE; to catch
     * everything else would work since it should just keep looping from the
     * mAINaCTIVITY until it hits one of them and RETURNS TRUE;. So I will
     * add this ELSE so that it will just redraw what is already there,
     * maybe that will fix it? Like, maybe it really really wants to use the
     * freaking listener for something.
     * 
     * Nope, that didn't help at all.
     */
    else {
        System.out.println("Ohhhh, NO YOU DIDN'T!!!");
        if (ua.checkType(position, "rock")) {
            System.out.println("Bad rock!, BAD!");
            ImageView v = iv;
            v.setImageResource(R.drawable.rock2);
            return false;
        }
        if (ua.checkType(position, "paper")) {
            ImageView v = iv;
            v.setImageResource(R.drawable.paper2);
            return false;
        }
        if (ua.checkType(position, "scissors")) {
            ImageView v = iv;
            v.setImageResource(R.drawable.scissors2);
            return false;
        }
        if (ua.checkType(position, "empty")) {
            ImageView v = iv;
            v.setImageResource(R.drawable.blank);
            return false;
        }
    }
    return false;
}

也许我必须添加一些东西来告诉 onItemClick.. 继续并停止在此处发送触摸事件？

Answer 1

假设您知道 GameplayController 将查看的元素数量:

boolean found = false;
int size = numberOfElements;
for(int i=0; i<size;i++) {
    if(gc.choosePiece(position, gameBoardModel,(ImageView) v)==true) {
        found = true;
        break;
    }
}
if(found) {
// do what u expect
}