adapter基类的封装

分享一下项目中封装、运用比较成熟的适配器基类

adapter

public abstract class AdapterBase<T> extends BaseAdapter {    protected List<T> mList = new LinkedList<T>();    protected Context mContext;    protected int mItemLayoutId;    public AdapterBase() {    }    public AdapterBase(Context mContext, List<T> list, int mItemLayoutId) {        initAdp(mContext, list, mItemLayoutId);    }    public List<T> getList() {        return mList;    }    public void appendToItem(T item) {        if (item == null) {            return;        }        mList.add(item);        afterAddLists(mList);        notifyDataSetChanged();    }    public void setList(List<T> list) {        if (list == null) {            return;        }        mList = list;        afterAddLists(mList);        notifyDataSetChanged();    }    public void appendToList(List<T> list) {        if (list == null) {            return;        }        mList.addAll(list);        afterAddLists(mList);        notifyDataSetChanged();    }    public void appendToTopList(List<T> list) {        if (list == null) {            return;        }        mList.addAll(0, list);        afterAddLists(mList);        notifyDataSetChanged();    }    /**     * 删除指定对象     *     * @param t     */    public void deleteItem(T t) {        if (t == null) {            return;        }        mList.remove(t);        notifyDataSetChanged();    }    private void initAdp(Context mContext, List<T> list, int mItemLayoutId) {        if (list == null) {            return;        }        this.mList = list;        this.mContext = mContext;        this.mItemLayoutId = mItemLayoutId;        notifyDataSetChanged();    }    public void clear() {        mList.clear();        notifyDataSetChanged();    }    @Override    public int getCount() {        return mList.size();    }    @Override    public T getItem(int position) {        if (position > mList.size() - 1) {            return null;        }        return mList.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        final ViewHolder viewHolder = getViewHolder(position, convertView,parent);        convertView(viewHolder, getItem(position));        return viewHolder.getConvertView();    }    private ViewHolder getViewHolder(int position, View convertView, ViewGroup parent) {        return ViewHolder.get(mContext, convertView, parent, mItemLayoutId, position);    }    public abstract void convertView(ViewHolder helper, T item);    protected void afterAddLists(List<T> lists) {    }    protected void startActi(Bundle bundle, Class<?> acti) {        Intent intent = new Intent(mContext, acti);        if (bundle != null) {            intent.putExtras(bundle);        }        mContext.startActivity(intent);    }}

viewHolder

public class ViewHolder {    private int mPosition;    private int mLayoutId;    private Context mContext;    private SparseArray<View> mViews;    private View mConvertView;    public ViewHolder(Context context, ViewGroup parent, int layoutId, int position) {        mContext = context;        mLayoutId = layoutId;        this.mPosition = position;        this.mViews = new SparseArray<View>();        mConvertView = LayoutInflater.from(context).inflate(layoutId, parent, false);        mConvertView.setTag(this);    }    public static ViewHolder get(Context context, View convertView, ViewGroup parent, int layoutId, int position) {        if (convertView == null) {            return new ViewHolder(context, parent, layoutId, position);        } else {            ViewHolder holder = (ViewHolder) convertView.getTag();            holder.mPosition = position;            return holder;        }    }    public int getPosition() {        return mPosition;    }    public int getLayoutId() {        return mLayoutId;    }    /**     * 通过viewId获取控件     * @param viewId     * @return     */    @SuppressWarnings("unchecked")    public <T extends View> T getView(int viewId) {        View view = mViews.get(viewId);        if (view == null) {            view = mConvertView.findViewById(viewId);            mViews.put(viewId, view);        }        return (T) view;    }    public View getConvertView() {        return mConvertView;    }    /**     * 设置TextView的值     * @param viewId     * @param text     * @return     */    public ViewHolder setText(int viewId, String text) {        TextView tv = getView(viewId);        tv.setText(text);        return this;    }    /**    *项目中用的图片加载框架是fresco    */    public ViewHolder setImageUrl(int viewID, String url) {        SimpleDraweeView view = getView(viewID);        if (!url.isEmpty()) {            ImageLoader.loadImage(view, url);        }        return this;    }    public ViewHolder setImageByBuilder(int viewID, String url, int resource) {        SimpleDraweeView view = getView(viewID);        RoundingParams roundingParams =view.getHierarchy().getRoundingParams();        roundingParams.setRoundAsCircle(true);        GenericDraweeHierarchyBuilder builder = new GenericDraweeHierarchyBuilder(mContext.getResources());        builder.setPlaceholderImageScaleType(ScalingUtils.ScaleType.FIT_XY);        builder.setPlaceholderImage(mContext.getResources().getDrawable(resource));        builder.setFailureImageScaleType(ScalingUtils.ScaleType.FIT_XY);        builder.setFailureImage(mContext.getResources().getDrawable(resource));        builder.setRoundingParams(roundingParams);        view.setHierarchy(builder.build());        if (!TextUtils.isEmpty(url)) {            ImageLoader.loadImage(view, url);        } else {            view.setImageResource(resource);        }        return this;    }    public ViewHolder setImageUrl(int viewID, String url, int resource) {        SimpleDraweeView view = getView(viewID);        if (!TextUtils.isEmpty(url)) {            ImageLoader.loadImage(view, url);        } else {            view.setImageResource(resource);        }        return this;    }    public ViewHolder setImageResource(int viewId, int resId) {        ImageView view = getView(viewId);        view.setImageResource(resId);        return this;    }    public ViewHolder setImageBitmap(int viewId, Bitmap bitmap) {        ImageView view = getView(viewId);        view.setImageBitmap(bitmap);        return this;    }    public ViewHolder setImageDrawable(int viewId, Drawable drawable) {        ImageView view = getView(viewId);        view.setImageDrawable(drawable);        return this;    }    public ViewHolder setBackgroundColor(int viewId, int color) {        View view = getView(viewId);        view.setBackgroundColor(color);        return this;    }    public ViewHolder setBackgroundRes(int viewId, int backgroundRes) {        View view = getView(viewId);        view.setBackgroundResource(backgroundRes);        return this;    }    public ViewHolder setTextColor(int viewId, int textColor) {        TextView view = getView(viewId);        view.setTextColor(textColor);        return this;    }    public ViewHolder setTextColorRes(int viewId, int textColorRes) {        TextView view = getView(viewId);        view.setTextColor(mContext.getResources().getColor(textColorRes));        return this;    }    public ViewHolder setAlpha(int viewId, float value) {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {            getView(viewId).setAlpha(value);        } else {            // Pre-honeycomb hack to set Alpha value            AlphaAnimation alpha = new AlphaAnimation(value, value);            alpha.setDuration(0);            alpha.setFillAfter(true);            getView(viewId).startAnimation(alpha);        }        return this;    }    public ViewHolder setVisible(int viewId, boolean visible) {        View view = getView(viewId);        view.setVisibility(visible ? View.VISIBLE : View.GONE);        return this;    }    public ViewHolder setHolderVisible(int viewId, boolean visible) {        View view = getView(viewId);        view.setVisibility(visible ? View.VISIBLE : View.INVISIBLE);        return this;    }    public ViewHolder linkify(int viewId) {        TextView view = getView(viewId);        Linkify.addLinks(view, Linkify.ALL);        return this;    }    public ViewHolder setTypeface(Typeface typeface, int... viewIds) {        for (int viewId : viewIds) {            TextView view = getView(viewId);            view.setTypeface(typeface);            view.setPaintFlags(view.getPaintFlags() | Paint.SUBPIXEL_TEXT_FLAG);        }        return this;    }    public ViewHolder setProgress(int viewId, int progress) {        ProgressBar view = getView(viewId);        view.setProgress(progress);        return this;    }    public ViewHolder setProgress(int viewId, int progress, int max) {        ProgressBar view = getView(viewId);        view.setMax(max);        view.setProgress(progress);        return this;    }    public ViewHolder setMax(int viewId, int max) {        ProgressBar view = getView(viewId);        view.setMax(max);        return this;    }    public ViewHolder setRating(int viewId, float rating) {        RatingBar view = getView(viewId);        view.setRating(rating);        return this;    }    public ViewHolder setRating(int viewId, float rating, int max) {        RatingBar view = getView(viewId);        view.setMax(max);        view.setRating(rating);        return this;    }    public ViewHolder setTag(int viewId, Object tag) {        View view = getView(viewId);        view.setTag(tag);        return this;    }    public ViewHolder setTag(int viewId, int key, Object tag) {        View view = getView(viewId);        view.setTag(key, tag);        return this;    }    public ViewHolder setChecked(int viewId, boolean checked) {        Checkable view = (Checkable) getView(viewId);        view.setChecked(checked);        return this;    }    /**     * 关于事件的     */    public ViewHolder setOnClickListener(int viewId, View.OnClickListener listener) {        View view = getView(viewId);        view.setOnClickListener(listener);        return this;    }    public ViewHolder setOnTouchListener(int viewId, View.OnTouchListener listener) {        View view = getView(viewId);        view.setOnTouchListener(listener);        return this;    }    public ViewHolder setOnLongClickListener(int viewId, View.OnLongClickListener listener) {        View view = getView(viewId);        view.setOnLongClickListener(listener);        return this;    }}

使用姿势：

AdapterBase mAdapter = new AdapterBase<Entity>(this, new ArrayList<Entity>(), R.layout.adapter_item) {            @Override            public void convertView(ViewHolder helper, Entity item) {                //设置文字                helper.setText(R.id.tv_title, item.title);                //获取控件                ItemView itemView = helper.getView(R.id.iv_item);                ...            }        };