Question

我在GridView中使用Fragmnet，在SlidingMenu中使用主机操作，而我的网格项使用简单的Google即时卡样式。但我的gridView太迟了，即使我使用性能技巧我的适配器（回收和持有人模式）。

我的问题： 还有其他性能调整吗？或者我是否按照正确的方式进行表演？（GridView和适配器）

gridView适配器：

public class CustomGridAdapter extends ArrayAdapter<RbtItem> {
    Context context;
    int layoutResourceId;
    ArrayList<RbtItem> data = new ArrayList<RbtItem>();


    public CustomGridAdapter(Context context, int layoutResourceId,
            ArrayList<RbtItem> data) {
        super(context, layoutResourceId, data);
        this.layoutResourceId = layoutResourceId;
        this.context = context;
        this.data = data;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;
        RecordHolder holder = null;

        if (row == null) {
            LayoutInflater inflater = ((Activity) context).getLayoutInflater();
            row = inflater.inflate(layoutResourceId, parent, false);

            holder = new RecordHolder();
            holder.txtTitle = (TextView) row.findViewById(R.id.item_text);
            holder.imageItem = (ImageView) row.findViewById(R.id.item_image);

            row.setTag(holder);
        } else {
            holder = (RecordHolder) row.getTag();
        }

        RbtItem item = data.get(position);
        holder.txtTitle.setText(item.getText());
        holder.imageItem.setImageResource(R.drawable.bg);
        return row;

    }

    static class RecordHolder {
        TextView txtTitle;
        ImageView imageItem;
    }

}

gridView项：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    style="@style/nowCardStyleRaw"
    android:layout_width="100dp"
    android:layout_height="140dp"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/item_image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/bg" />

    <TextView
        android:id="@+id/item_text"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_marginLeft="2dp"
        android:layout_marginRight="5dp"
        android:ellipsize="none"
        android:gravity="right"
        android:maxLines="1"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/item_singer"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_marginTop="-20dp"
        android:layout_marginLeft="2dp"
        android:layout_marginRight="5dp"
        android:ellipsize="none"
        android:gravity="right"
        android:maxLines="1"
        android:textSize="11sp"
        android:textColor="#FF4444" />

</TextView>

fargment布局：

<?xml version="1.0" encoding="utf-8"?>
<GridView
    xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/fragment_rbt_list_grid"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:background="#e3e3e3"
     android:columnWidth="97dp"
     android:gravity="center"
     android:numColumns="auto_fit"
     android:paddingLeft="5dp"
     android:paddingRight="5dp"
     android:paddingTop="8dp"
     android:stretchMode="columnWidth"
     android:verticalSpacing="12dp" >
 </GridView>

android - GridView太迟钝了

0 个答案: