Spinner同一Item事件响应+默认第一次不触发事件

1.设置第一次不触发点击事件:

mSpinner.setSelection(0, true);

2.响应同一Item事件:
原因在AbsSpinner源码中:

/**
     * Makes the item at the supplied position selected.
     * 
     * @param position Position to select
     * @param animate Should the transition be animated
     * 
     */
    void setSelectionInt(int position, boolean animate) {
        if (position != mOldSelectedPosition) {
            mBlockLayoutRequests = true;
            int delta  = position - mSelectedPosition;
            setNextSelectedPositionInt(position);
            layout(delta, animate);
            mBlockLayoutRequests = false;
        }
    }

自定义Spinner:

import android.content.Context;
import android.support.v7.widget.AppCompatSpinner;
import android.util.AttributeSet;

/**
 * ----------Dragon be here!----------/
 *    ┏┓   ┏┓
 *   ┏┛┻━━━┛┻┓
 *   ┃       ┃
 *   ┃   ━   ┃
 *   ┃ ┳┛ ┗┳ ┃
 *   ┃       ┃
 *   ┃   ┻   ┃
 *   ┃       ┃
 *   ┗━┓   ┏━┛
 *     ┃   ┃神兽保佑
 *     ┃   ┃代码无BUG!
 *     ┃   ┗━━━┓
 *     ┃       ┣┓
 *     ┃       ┏┛
 *     ┗┓┓┏━┳┓┏┛
 *      ┃┫┫ ┃┫┫
 *      ┗┻┛ ┗┻┛
 * ━━━━━━神兽出没━━━━━━
 *
 * @author Reginer in  2017/1/3 9:46.
 *         QQ:282921012
 *         Description:点击相同item触发点击事件Spinner
 */
public class ReselectSpinner extends AppCompatSpinner {

    public ReselectSpinner(Context context) {
        super(context);
    }

    public ReselectSpinner(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ReselectSpinner(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }


    @Override
    public void setSelection(int position) {
        if (getOnItemSelectedListener() != null) {
            getOnItemSelectedListener().onItemSelected(this, getSelectedView(),
                    position, getSelectedItemId());
        }
    }
}

ps:不是AppcompatActivity继承Spinner。

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