Question

我有一个ListView，用于一次显示一个问题列表。我在列表项中使用了5个ImageView，即每个列表项（问题）有5个答案。我需要的是，当我点击任何图像时，它应该首先显示所选图像的黑色背景颜色，比如说500毫秒，然后它应该移动到下一个问题。目前，当我点击任何列表项时，它会立即转到下一个问题而不显示黑色背景。

que.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/lyot"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

                        <ImageView
                            android:id="@+id/iv1"
                            android:layout_width="75dp"
                            android:layout_height="78dp"
                            android:background="@drawable/selector_iv1"
                            android:clickable="true"
                            android:src="@drawable/sa" />

                        <ImageView
                            android:id="@+id/iv2"
                            android:layout_width="75dp"
                            android:layout_height="78dp"
                            android:src="@drawable/sb" />

                        <ImageView
                            android:id="@+id/iv3"
                            android:layout_width="75dp"
                            android:layout_height="78dp"
                            android:src="@drawable/sc" />

                        <ImageView
                            android:id="@+id/iv4"
                            android:layout_width="75dp"
                            android:layout_height="78dp"
                            android:src="@drawable/sd" />

                        <ImageView
                            android:id="@+id/iv5"
                            android:layout_width="75dp"
                            android:layout_height="78dp"
                            android:src="@drawable/se" />

</LinearLayout>

layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >
        <ListView
            android:id="@+id/queList"
            android:layout_width="match_parent"
            android:layout_height="500dp"
            android:layout_marginBottom="25dp"
            android:divider="@null"
            android:focusableInTouchMode="false"
            android:overScrollMode="never"
            android:scrollbars="none" />
</LinearLayout>


Activity.java

public class Activity extends Activity
{
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.layout);
         ListView queList = (ListView) findViewById(R.id.queList);
         refreshQuestionList();
    }
    private void refreshQuestionList()
    {
        queList.setAdapter(new quesAnsListAdapter(context));
        queList.setSelection(currentQuestionPosition);
    }
    private class quesAnsListAdapter extends BaseAdapter
    {
        private Context mContext;

        public quesAnsListAdapter(Context context)
        {
            mContext = context;
        }

        public int getCount()
        {
            return 10;
        }

        public Object getItem(int position)
        {
            return myArrayListItem;
        }

        public long getItemId(int position)
        {
            return position;
        }

        public View getView(final int position, View convertView, ViewGroup parent)
        {
            ViewHolder holder = new ViewHolder();
            View row = convertView;
            if (row == null)
            {
                LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
                row = inflater.inflate(R.layout.que, null);

                holder.iv1 = (ImageView) row.findViewById(R.id.iv1);

                holder.iv2 = (ImageView) row.findViewById(R.id.iv2);

                holder.iv3 = (ImageView) row.findViewById(R.id.iv3);

                holder.iv4 = (ImageView) row.findViewById(R.id.iv4);

                holder.iv5 = (ImageView) row.findViewById(R.id.iv5);

                row.setTag(holder);
            }
            else
            {
                holder = (ViewHolder) row.getTag();
            }
            holder.que.setText("Que"+position);

            for (int i = 0; i < ansBeanList.size(); i++)
            {

                final AnsBean ab = ansBeanList.get(i);
                switch (i)
                {
                    case 0:
                        holder.iv1.setOnClickListener(new OnClickListener()
                        {

                            @Override
                            public void onClick(View v)
                            {
                                v.setBackgroundColor(Color.BLACK);
                                smilyClick(position);
                            }
                        });
                        break;
                    case 1:
                        holder.iv2.setOnClickListener(new OnClickListener()
                        {

                            @Override
                            public void onClick(View v)
                            {
                                v.setBackgroundColor(Color.BLACK);
                                smilyClick(position);
                            }
                        });
                        break;
                    case 2:
                        holder.iv3.setOnClickListener(new OnClickListener()
                        {

                            @Override
                            public void onClick(View v)
                            {
                                v.setBackgroundColor(Color.BLACK);
                                smilyClick(position);
                            }
                        });
                        break;
                    case 3:
                        holder.iv4.setOnClickListener(new OnClickListener()
                        {

                            @Override
                            public void onClick(View v)
                            {
                                v.setBackgroundColor(Color.BLACK);
                                smilyClick(position);
                            }
                        });
                        break;
                    case 4:
                        holder.iv5.setOnClickListener(new OnClickListener()
                        {

                            @Override
                            public void onClick(View v)
                            {
                                v.setBackgroundColor(Color.BLACK);
                                smilyClick(position);
                            }
                        });
                        break;

                    default:
                        break;
                }
            }
            return row;
        }

        class ViewHolder
        {
            ImageView iv1, iv2, iv3, iv4, iv5;
        }
    }

    private int currentQuestionPosition=0,finalQuestionPosition=9;
    private void smilyClick(int oldQuestionPosition)
    {
            boolean answerInsertedOrUpdated = false;
            if (oldQuestionPosition < finalQuestionPosition)
                currentQuestionPosition = (oldQuestionPosition + 1);
            if (oldQuestionPosition < finalQuestionPosition)
            {
                refreshQuestionList();
            }
    }

}

Answer 1

启动应用时currentQuestionPosition=0,finalQuestionPosition=9; 在smily中点击你做的refreshQuestionList()根据之前说明的值调用。

但是这个方法删除了适配器并创建了新的，这导致整个ListView重绘。

单击列表项中的ImageView未正确发生

1 个答案: