Question

我正在使用kankan的轮盘视图演示。但是当车轮中的物品被选中时，不知道如何使用按钮。请帮帮我。

我使用了一个按钮，但是像微调器一样，没有方法setOnItemSelectedListener（this）;那么在从车轮中选择项目后单击按钮时如何使用它。

提前致谢。

编码如下：

公共类SlotMachineActivity扩展了Activity {

final String cities[] = new String[] { "Item 1",
        "Item 2", "Item 3", "Item 4",
        "Item 5", "Item 6", "Item 7",
        "Item 8", " Item 9", "Item 10" };

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.slot_machine_layout);



    initWheel(R.id.slot_1, cities);


}

Handler handlar = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        // TODO Auto-generated method stub
        super.handleMessage(msg);
        mixWheel(R.id.slot_1);
    }
};

class UpdateTimeTask extends TimerTask {
    public void run() {
        handlar.removeCallbacks(this);
        handlar.sendEmptyMessage(0);
    }
}

// Wheel scrolled flag
private boolean wheelScrolled = false;

// Wheel scrolled listener
OnWheelScrollListener scrolledListener = new OnWheelScrollListener() {
    public void onScrollingStarted(WheelView wheel) {
        wheelScrolled = true;
    }

    public void onScrollingFinished(WheelView wheel) {
        wheelScrolled = false;
        // updateStatus();

        Toast.makeText(getApplicationContext(), cities[wheel.getCurrentItem()], Toast.LENGTH_LONG).show();
    }
};

// Wheel changed listener
private OnWheelChangedListener changedListener = new OnWheelChangedListener() {
    public void onChanged(WheelView wheel, int oldValue, int newValue) {
        if (!wheelScrolled) {
            // updateStatus();
        }
    }
};

/**
 * Initializes wheel
 * 
 * @param id
 *            the wheel widget Id
 */
private void initWheel(int id, String cities[]) {

    ArrayWheelAdapter<String> adapter = new ArrayWheelAdapter<String>(this,
            cities);

    WheelView wheel = getWheel(id);
    wheel.setViewAdapter(adapter);
    wheel.setCurrentItem((int) (Math.random() * 10));
    wheel.setVisibleItems(7);

    wheel.addChangingListener(changedListener);
    wheel.addScrollingListener(scrolledListener);
    wheel.setCyclic(true);
    wheel.setEnabled(true);
}

/**
 * Returns wheel by Id
 * 
 * @param id
 *            the wheel Id
 * @return the wheel with passed Id
 */
private WheelView getWheel(int id) {
    return (WheelView) findViewById(id);
}

/**
 * Mixes wheel
 * 
 * @param id
 *            the wheel id
 */
private void mixWheel(int id) {
    WheelView wheel = getWheel(id);
    wheel.scroll(-350 + (int) (Math.random() * 50), 2000);

}

}

Answer 1

您必须在按钮上设置OnClickListener，然后从那里读取当前选定的项目。

轮视图android按钮

1 个答案: