Android EasyAdapter

EasyAdapter的安装

[1] Github地址 和 Jar包下载地址。

[2] 如果在源码编译中引用jar包需要在项目的Android.mk中添加：

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LOCAL_STATIC_JAVA_LIBRARIES += easy-adapter
LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES += easy-adapter:libs/easyadapter-1.0.1.jar

[3] 如果使用了代码混淆，一定要在proguard.flags文件中去掉对easy-adapter代码包的混淆：

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-keep public class uk.co.ribot.easyadapter.** {
    public protected *;
}


EasyAdapter的使用

使用EasyAdapter之前

自定义一个BaseAdapter，包含了下面繁琐的模板代码：

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private class TopicDetailAdapter extends BaseAdapter {
    @Override
    public int getCount() {
        return mEventList != null ? mEventList.size() : 0;
    }
    @Override
    public Object getItem(int position) {
        return mEventList.get(position);
    }
    @Override
    public long getItemId(int position) {
        return position;
    }
    @Override
    public boolean isEnabled(int position) {
        return false;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView == null) {
            convertView = LayoutInflater.from(mActivity).inflate(
                    R.layout.event_online_item, null);
            holder = new ViewHolder(convertView);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        final EventSchema event = mEventList.get(position);
        holder.mHeaderText.setText(R.string.topic_event_list_header_label);
        holder.mHeaderText.setVisibility(position == 0 ? View.VISIBLE : View.GONE);
        holder.mPrimaryText.setText(event.title);
        holder.mSecondaryText.setText(MonthUtils.getEventTimeString(mActivity, event,
                Time.getCurrentTimezone()));
        String url = event.getEventIconUrl();
        if (!TextUtils.isEmpty(url)) {
            holder.mOnlineImage.setVisibility(View.VISIBLE);
            holder.mOnlineImage.setImageUrl(url, R.drawable.loading, R.drawable.loading);
        } else {
            holder.mOnlineImage.setVisibility(View.GONE);
        }
        return convertView;
    }
    private class ViewHolder {
        public TextView mHeaderText;
        public ViewGroup mRowGroup;
        public TextView mPrimaryText;
        public TextView mSecondaryText;
        public OnlineImageView mOnlineImage;
        public ViewHolder(View view) {
            mHeaderText = (TextView) view.findViewById(R.id.header);
            mRowGroup = (ViewGroup) view.findViewById(R.id.row);
            mPrimaryText = (TextView) view.findViewById(R.id.primary);
            mSecondaryText = (TextView) view.findViewById(R.id.secondary);
            mOnlineImage = (OnlineImageView) view.findViewById(R.id.online_image);
        }
    }
}

利用自定义的BaseAdapter继承类填充List数据：

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getListView().setAdapter(new TopicDetailAdapter());


使用EasyAdapter之后

继承自ItemViewHolder关联数据和视图：

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public class TopicItemViewHolder extends ItemViewHolder<EventSchema> {
    @ViewId(R.id.header)
    TextView mHeaderText;
    @ViewId(R.id.row)
    ViewGroup mRowGroup;
    @ViewId(R.id.primary)
    TextView mPrimaryText;
    @ViewId(R.id.secondary)
    TextView mSecondaryText;
    @ViewId(R.id.online_image)
    OnlineImageView mOnlineImage;
    public TopicItemViewHolder(View view) {
        super(view);
    }
    @Override
    public void onSetValues(EventSchema event, PositionInfo posInfo) {
        mHeaderText.setText(R.string.topic_event_list_header_label);
        mHeaderText.setVisibility(posInfo.isFirst() ? View.VISIBLE : View.GONE);
        mPrimaryText.setText(event.title);
        mSecondaryText.setText(MonthUtils.getEventTimeString(getContext(), event,
                Time.getCurrentTimezone()));
        String url = event.getEventIconUrl();
        if (!TextUtils.isEmpty(url)) {
            mOnlineImage.setVisibility(View.VISIBLE);
            mOnlineImage.setImageUrl(url, R.drawable.loading, R.drawable.loading);
        } else {
            mOnlineImage.setVisibility(View.GONE);
        }
    }
}

利用EasyAdapter模板类直接填充List数据：

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getListView().setAdapter(new EasyAdapter<EventSchema>(getContext(), TopicItemViewHolder.class, mEventList);

留言

2014 5月 16
▲