安卓自定义分页view

模仿web上的分页按钮，类似下图中按钮，当前图为只有一页

具体代码如下：

public class PageControl extends LinearLayout implements View.OnClickListener {    private int maxPage = 1;//最大页    private int curPage = 1;//当前页    private int TotalCount = 0;//总数    private int buttonCount = 5;//按钮数    private int lastButton = 0;//最后一个按钮对应的页码    private int firstButton = 0;//第一个按钮对应的页码    private OnPageChangeListener pageChangeListener;    Context context;    private int height = 0;    //分页监听事件    public interface OnPageChangeListener {        //点击分页按钮时触发此操作        // curPage  当前页    numPerPage 每页显示个数        void pageChanged(int numPerPage);    }    public PageControl(Context context) {        this(context, null);    }    public PageControl(Context context, @Nullable AttributeSet attrs) {        this(context, attrs, 0);    }    public PageControl(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        this.context = context;        height = DisplayUtil.getInstance().dip2px(context, 44);        initPageComposite();    }    private void createView(int page) {        TextView first = createView();        first.setText(page + "");        first.setTag(page);        first.setOnClickListener(this);        this.addView(first);    }    private TextView createView() {        TextView first = new TextView(context);        first.setBackgroundResource(R.drawable.page_sel);        first.setPadding(20, 0, 20, 0);        first.setGravity(Gravity.CENTER);        LayoutParams layoutParam = new LayoutParams(LayoutParams.WRAP_CONTENT, height);        first.setMinWidth(height);        //first.setTextColor(context.getResources().getColor(R.drawable.selector_textcolor,null));        layoutParam.setMargins(0, 0, 15, 0);        first.setLayoutParams(layoutParam);        return first;    }    private void createPrevious() {        TextView first = createView();        first.setText("上一页");        first.setOnClickListener(this);        this.addView(first, 0);    }    private void createNext() {        TextView first = createView();        first.setText("下一页");        first.setOnClickListener(this);        this.addView(first);    }    public void initPageComposite() {        int temp = maxPage;        maxPage = TotalCount % Constant.PageSize == 0 ? TotalCount / Constant.PageSize : TotalCount / Constant.PageSize + 1;        if (temp != maxPage) {            createAllView();        }        if (maxPage == 0) {            removeAllViews();            return;        }        if (curPage < firstButton || curPage > lastButton || lastButton == 0) {            createAllView();        }        setSelectView(curPage);    }    private void setBtnGroup() {        int n = maxPage / buttonCount;        if (n == 0) {            //只有一组            firstButton = 1;            lastButton = maxPage;        } else {            int i = curPage / buttonCount;            //有n组            firstButton = i * buttonCount + 1;            if (firstButton > curPage) {                firstButton = (i - 1) * buttonCount + 1;            }            lastButton = (firstButton - 1) + buttonCount;        }        if (lastButton > maxPage && lastButton > 1) {            lastButton = maxPage;        }    }    private void createAllView() {        setBtnGroup();        this.removeAllViews();        this.setPadding(10, 10, 10, 10);        int n = firstButton;        while (n <= lastButton && n <= TotalCount) {            createView(n);            n++;        }        createPrevious();        createNext();    }    public void setTotalCount(int totalCount) {        if (totalCount != TotalCount) {            TotalCount = totalCount;            initPageComposite();        }    }    public int getTotalCount() {        return TotalCount;    }    //分页按钮被点击时更新状态,该方法要在initPageShow后调用    @Override    public void onClick(View view) {        if (pageChangeListener == null) return;        if (view instanceof TextView) {            TextView tv = (TextView) view;            String txt = tv.getText().toString();            if (txt.equalsIgnoreCase("上一页")) {                curPage -= 1;                curPage = curPage >= 1 ? curPage : 1;                setSelectView(curPage);                pageChangeListener.pageChanged(curPage);                initPageComposite();                return;            }            if (txt.equalsIgnoreCase("下一页")) {                curPage += 1;                curPage = curPage <= maxPage ? curPage : maxPage;                setSelectView(curPage);                pageChangeListener.pageChanged(curPage);                initPageComposite();                return;            }        }        if (view.getTag() != null) {            Object tag = view.getTag();            curPage = Integer.parseInt(tag.toString());            pageChangeListener.pageChanged(curPage);            setSelectView(curPage);        }    }    public void setCurrentPage(int page) {        curPage = page;        setSelectView(curPage);    }    private void setSelectView(int n) {        //initPageComposite();        for (int i = 0; i < this.getChildCount(); i++) {            View v = this.getChildAt(i);            if (v.getTag() != null) {                int tag = Integer.parseInt(v.getTag().toString());                if (tag == n) {                    v.setSelected(true);                } else {                    v.setSelected(false);                }            }        }    }    /**     * 设置分页监听事件     */    public void setPageChangeListener(OnPageChangeListener pageChangeListener) {        this.pageChangeListener = pageChangeListener;    }}

使用

PageControl pager = (PageControl) view.findViewById(R.id.parentPanel);

pager.setPageChangeListener(this);

pager.setPageChangeListener(new PageControl.OnPageChangeListener() {    @Override    public void pageChanged(int numPerPage) {//请求数据    }});

//根据实际返回的数据记录数设置总数

pager.setTotalCount(bean.Count);