Android 你还在用WheelView吗？out了！

WheelView

性能盘点：

• 1、绘制优化(绘制条数 = 显示条数 + 2，不会过多绘制)

• 2、支持各种数据类型(数据类型实现IWheel接口)

• 3、封装了多列底部弹窗

• 4、封装了日期时间选择底部弹出

效果截屏

wheel_view

column_dialog

date_time_dialog

简析源码

本篇就不做源码分析了

使用示例

• 1、属性
  WheelView

{@link R.styleable#WheelView_wheelTextColor}// 文字颜色{@link R.styleable#WheelView_wheelTextSize}//文字大小{@link R.styleable#WheelView_wheelShowCount}//显示条数(高度由显示条数决定){@link R.styleable#WheelView_wheelTotalOffsetX}//文字在X轴方向偏移总量，0就不偏移、>0向右偏移并形成文字倾斜角度、<0向左偏移并形成文字倾斜角度{@link R.styleable#WheelView_wheelItemVerticalSpace}//两个显示Item之间的间距

WheelItemView在WheelView基础上添加了中间的两条分割线view。

{@link R.styleable#WheelView_wheelTextColor}// 文字颜色{@link R.styleable#WheelView_wheelTextSize}//文字大小{@link R.styleable#WheelView_wheelShowCount}//显示条数(高度由显示条数决定){@link R.styleable#WheelView_wheelTotalOffsetX}//文字在X轴方向偏移总量，0就不偏移、>0向右偏移并形成文字倾斜角度、<0向左偏移并形成文字倾斜角度{@link R.styleable#WheelView_wheelItemVerticalSpace}//两个显示Item之间的间距{@link R.styleable#WheelItemView_wheelMaskLineColor}//中间两条线的颜色

• 2、gradle引用
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    compile 'jsc.kit.wheel:wheel-view:_latestVersion'

        <jsc.kit.wheel.base.WheelItemView
            android:id="@+id/wheel_view_left"
            android:layout_width="160dp"
            android:layout_height="wrap_content"
            app:wheelItemVerticalSpace="12dp"
            app:wheelTotalOffsetX="12dp" />

        <jsc.kit.wheel.base.WheelView
            android:id="@+id/wheel_view_left"
            android:layout_width="160dp"
            android:layout_height="wrap_content"
            app:wheelItemVerticalSpace="12dp"
            app:wheelTotalOffsetX="-12dp" />

• ColumnWheelDialog
  多列互不关联底部弹窗，最多支持5列。相应的列有数据则显示，无数据则不显示。

    private ColumnWheelDialog showDialog() {
        ColumnWheelDialog<WheelItem, WheelItem, WheelItem, WheelItem, WheelItem> dialog = new ColumnWheelDialog<>(getActivity());
        dialog.show();
        dialog.setTitle("选择菜单");
        dialog.setCancelButton("取消", null);
        dialog.setOKButton("确定", new ColumnWheelDialog.OnClickCallBack<WheelItem, WheelItem, WheelItem, WheelItem, WheelItem>() {            @Override
            public boolean callBack(View v, @Nullable WheelItem item0, @Nullable WheelItem item1, @Nullable WheelItem item2, @Nullable WheelItem item3, @Nullable WheelItem item4) {                return false;
            }
        });
                dialog.setItems(
                        initItems("菜单选项一"),
                        initItems("菜单选项二"),
                        initItems("菜单选项三"),
                        initItems("菜单选项四"),
                        initItems("菜单选项五")
                );
                dialog.setSelected(                        new Random().nextInt(50),                        new Random().nextInt(50),                        new Random().nextInt(50),                        new Random().nextInt(50),                        new Random().nextInt(50)
                );    private WheelItem[] initItems(String label) {        final WheelItem[] items = new WheelItem[50];        for (int i = 0; i < 50; i++) {
            items[i] = new WheelItem(label + (i < 10 ? "0" + i : "" + i));
        }        return items;
    }

• DateTimeWheelDialog
  日期时间选择底部弹窗，最多支持到分钟。

private DateTimeWheelDialog showDialog(int type) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.YEAR, 2015);
        calendar.set(Calendar.MONTH, 0);
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        Date startDate = calendar.getTime();
        calendar = Calendar.getInstance();
        calendar.set(Calendar.YEAR, 2020);
        Date endDate = calendar.getTime();

        DateTimeWheelDialog dialog = new DateTimeWheelDialog(getActivity());
        dialog.show();
        dialog.setTitle("选择时间");        int config = DateTimeWheelDialog.SHOW_YEAR_MONTH_DAY_HOUR_MINUTE;        switch (type) {            case 1://只显示年
                config = DateTimeWheelDialog.SHOW_YEAR;                break;            case 2://显示年、月
                config = DateTimeWheelDialog.SHOW_YEAR_MONTH;                break;            case 3://显示年、月、日
                config = DateTimeWheelDialog.SHOW_YEAR_MONTH_DAY;                break;            case 4://显示年、月、日、时
                config = DateTimeWheelDialog.SHOW_YEAR_MONTH_DAY_HOUR;                break;            case 5://显示年、月、日、时、分
                config = DateTimeWheelDialog.SHOW_YEAR_MONTH_DAY_HOUR_MINUTE;                break;
        }
        dialog.configShowUI(config);
        dialog.setCancelButton("取消", null);
        dialog.setOKButton("确定", new DateTimeWheelDialog.OnClickCallBack() {
            @Override            public boolean callBack(View v, @NonNull Date selectedDate) {
                tvResult.setText(SimpleDateFormat.getInstance().format(selectedDate));                return false;
            }
        });
        dialog.setDateArea(startDate, endDate, true);
        dialog.updateSelectedDate(new Date());
    }

作者：JustinRoom
链接：https://www.jianshu.com/p/cd29b6c9222e