自学鸿蒙应用开发（14）- RoundProgressBar

<DirectionalLayout    xmlns:ohos="http://schemas.huawei.com/res/ohos"    ohos:height="match_parent"    ohos:width="match_parent"    ohos:orientation="vertical">    <Component        ohos:height="0vp"        ohos:weight="3"        ohos:width="match_parent"        />    <DirectionalLayout        xmlns:ohos="http://schemas.huawei.com/res/ohos"        ohos:height="match_content"        ohos:width="match_parent"        ohos:layout_alignment="center"        ohos:orientation="vertical">        <Image            ohos:id="$+id:image"            ohos:width="match_content"            ohos:height="match_content"            ohos:layout_alignment="center"            ohos:image_src="$media:DevEco"        />        <TimePicker            ohos:id="$+id:time_picker"            ohos:24_hour_mode="false"            ohos:height="match_content"            ohos:width="match_parent"            ohos:layout_alignment="horizontal_center"            ohos:text_am="AM"            ohos:text_pm="PM"            ohos:normal_text_size="20fp"            ohos:selected_text_size="25fp"/>        <RoundProgressBar            ohos:id="$+id:second_progress"            ohos:height="200vp"            ohos:width="200vp"            ohos:layout_alignment="horizontal_center"            ohos:progress_width="20vp"            ohos:start_angle="45"            ohos:max_angle="270"            ohos:progress="20"            ohos:progress_color="#47CC47"/>    DirectionalLayout>    <Component        ohos:height="0vp"        ohos:weight="5"        ohos:width="match_parent"        />DirectionalLayout>

package com.example.helloharmony.slice;import com.example.helloharmony.ResourceTable;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.content.Intent;import ohos.agp.components.*;import ohos.agp.window.dialog.ToastDialog;import java.time.LocalTime;import java.time.temporal.ChronoUnit;
public class ComponentAbilitySlice extends AbilitySlice {    @Override    public void onStart(Intent intent) {        super.onStart(intent);        super.setUIContent(ResourceTable.Layout_ability_component);        //获取TimePicker组件        TimePicker picker = (TimePicker) findComponentById(ResourceTable.Id_time_picker);        //获取ProgressBar组件        RoundProgressBar secondsBar = (RoundProgressBar)findComponentById(ResourceTable.Id_second_progress);        updateProgressValue(picker, secondsBar);        //为TimePicker设定事件响应        ComponentAbilitySlice this_slice = this;        picker.setTimeChangedListener(            new TimePicker.TimeChangedListener() {                @Override                public void onTimeChanged(TimePicker timePicker, int hour, int minute, int second) {                    this_slice.updateProgressValue(timePicker, secondsBar);                }            }        );    }    @Override    public void onActive() {        super.onActive();    }    @Override    public void onForeground(Intent intent) {        super.onForeground(intent);    }
    private void updateProgressValue(TimePicker time_picker, ProgressBar progress){        int seconds = (time_picker.getHour() * 60 + time_picker.getMinute()) * 60 + time_picker.getSecond();        progress.setProgressValue(progress.getMin() + seconds * (progress.getMax() - progress.getMin()) / 86400);    }}