自定义listview点击监听时好时坏，不灵敏，是怎么回事啊

开始以为是设置的监听无效，后来发现是可以点击的，点击很不好用，偶尔才能点击到，请问是什么原因啊

package net.bmvod.jukeboxv2;

import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.Toast;

/**

• TODO: document your custom view class.
  /
  public class LvListView extends ListView implements AbsListView.OnItemClickListener {
  /*

  • 显示在屏幕上多少个item / private int showItemCount; /*
  • 每个item的高度 / private int itemHeight; /*
  • 记录第一个显示的item / /*
  • 从第几行执行动画 / private int scaleFlagIndex = 0; /*
  • 是否到了最后一行 */ private boolean lastFlag = false;

  /**

  • 步骤 */ private int step = 0;

  /**

  • 步骤个数 */ private int stepCount;

  public LvListView(Context context) {
  this(context, null);
  }

  public LvListView(Context context, AttributeSet attrs) {
  this(context, attrs, 0);
  }

  /**

  • 构造方法中拿到自定义属性showViewCount，并设置滚动监听 *
  • @param context
  • @param attrs

  • @param defStyleAttr
    */
    public LvListView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    //获取showViewCount
    TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.LvListView);
    showItemCount = typedArray.getInt(R.styleable.LvListView_showViewCount, 0);
    typedArray.recycle();

    //设置一个滚动监听
    // setOnScrollListener(this);
    setOnItemClickListener(this);
    }

  /**

  • 重写onLayout方法得到LvListview尺寸信息，并根据要显示的item个数计算出item高度并设置 *
  • @param changed
  • @param l
  • @param t
  • @param r
  • @param b */ @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { super.onLayout(changed, l, t, r, b); if (changed) { itemHeight = this.getHeight() / showItemCount; for (int i = 0; i < getChildCount(); i++) { LinearLayout layout = (LinearLayout) getChildAt(i); LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, itemHeight); layout.setLayoutParams(layoutParams); } stepCount = getAdapter().getCount(); } }

  /**

  • 禁用手指滑动 *
  • @param ev
  • @return */

  /**

  • 设置滚动到指定item */ public void scrollToItem() { step++; if (step == stepCount) { step = 0; this.lastFlag = true; startScaleAnimator(getChildAt(scaleFlagIndex), 1.0f, 0.6f); this.smoothScrollToPositionFromTop(step, 0, 1000); } else { this.smoothScrollToPositionFromTop(step, 0, 500); } }

  /**

  • 缩放动画 *
  • @param view
  • @param start
  • @param end */ public void startScaleAnimator(final View view, float start, float end) { ValueAnimator animator = ValueAnimator.ofFloat(start, end); animator.setDuration(500); animator.start(); animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { float value = (float) animation.getAnimatedValue(); view.setScaleX(value); view.setScaleY(0.4f + (0.6f * value)); } }); }

/* @Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
Log.e("onScrollStateChanged", "scrollState--" + scrollState);
if (scrollState == OnScrollListener.SCROLL_STATE_FLING) {
if (!lastFlag) {
startScaleAnimator(view.getChildAt(scaleFlagIndex), 1.0f, 0.6f);
startScaleAnimator(view.getChildAt(scaleFlagIndex + 1), 0.6f, 1.0f);
scaleFlagIndex = 2;
}
} else if (scrollState == OnScrollListener.SCROLL_STATE_IDLE && lastFlag) {
this.lastFlag = false;
//this.scaleFlag = true;
scaleFlagIndex = 1;
}
}

@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
    Log.e("onScroll", "firstVisibleItem--" + firstVisibleItem);
}*/

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    System.out.println(position);

    switch (position) {
        case 0:
            startScaleAnimator(view, 0.6f, 1.0f);
            break;
        case 1:
            startScaleAnimator(view, 0.6f, 1.0f);
            break;
        case 2:
            startScaleAnimator(view, 0.6f, 1.0f);
            break;
    }

}

}

这是我的代码，是根据网上的例子改的，自定义listview的监听很不好，原来是跟本不可以点击然后我在列表的配置文件里面加了android:clickable="true" 之后的效果见识点20次能监听到一次那种效果，求解决

我是领经验的，不要搭理我。。