Win10/UWP新特性系列—电池报告

 1 <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
 2     <StackPanel Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
 3         <StackPanel VerticalAlignment="Center" Margin="6">
 4             <RadioButton x:Name="AggregateButton" Content="Aggregate results"
 5                          GroupName="Type" IsChecked="True"/>
 6             <RadioButton x:Name="IndividualButton" Content="Individual results"
 7                          GroupName="Type" IsChecked="False"/>
 8         </StackPanel>
 9         <StackPanel Orientation="Horizontal">
10             <Button x:Name="GetBatteryReportButton"
11                     Content="Get Battery Report"
12                     Margin="15,15,0,0" Click="GetBatteryReportButton_Click"
13                     />
14         </StackPanel>
15         <StackPanel x:Name="BatteryReportPanel" Margin="15,15,0,0"/>
16     </StackPanel>
17 </Grid>

  1 public sealed partial class MainPage : Page
  2  {
  3      bool reportRequested;
  4      public MainPage()
  5      {
  6          this.InitializeComponent();
  7          //订阅电池状态更改事件
  8          Battery.AggregateBattery.ReportUpdated += AggregateBattery_ReportUpdated;
  9      }
 10  
 11      private async void AggregateBattery_ReportUpdated(Battery sender, object args)
 12      {
 13          if (reportRequested)
 14          {
 15              await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
 16              {
 17                  //清空显示区UI元素
 18                  BatteryReportPanel.Children.Clear();
 19  
 20                  if (AggregateButton.IsChecked == true)
 21                  {
 22                      //多电池报告
 23                      RequestAggregateBatteryReport();
 24                  }
 25                  else
 26                  {
 27                      //单电池报告
 28                      RequestIndividualBatteryReports();
 29                  }
 30              });
 31          }
 32      }
 33  
 34      /// <summary>
 35      /// 获取 单个电池 报告
 36      /// </summary>
 37      private void RequestIndividualBatteryReports()
 38      {
 39          var aggBattery = Battery.AggregateBattery;
 40  
 41          var report = aggBattery.GetReport();
 42  
 43          AddReportUI(BatteryReportPanel, report, aggBattery.DeviceId);
 44      }
 45  
 46      private void AddReportUI(StackPanel batteryReportPanel, BatteryReport report, string deviceId)
 47      {
 48          // 创建 电池报告 UI
 49          var txt1 = new TextBlock { Text = "设备 ID: " + deviceId };
 50          txt1.FontSize = 15;
 51          txt1.Margin = new Thickness(0, 15, 0, 0);
 52          txt1.TextWrapping = TextWrapping.WrapWholeWords;
 53  
 54          var txt2 = new TextBlock { Text = "电池状态: " + report.Status.ToString() };
 55          ChangRequestedTheme(report.Status);
 56          txt2.FontStyle = Windows.UI.Text.FontStyle.Italic;
 57          txt2.Margin = new Thickness(0, 0, 0, 15);
 58  
 59          var txt3 = new TextBlock { Text = "充电速度 (mW): " + report.ChargeRateInMilliwatts.ToString() };
 60          var txt4 = new TextBlock { Text = "理论产能 (mWh): " + report.DesignCapacityInMilliwattHours.ToString() };
 61          var txt5 = new TextBlock { Text = "总容量 (mWh): " + report.FullChargeCapacityInMilliwattHours.ToString() };
 62          var txt6 = new TextBlock { Text = "当前容量 (mWh): " + report.RemainingCapacityInMilliwattHours.ToString() };
 63  
 64          // 创建电量比例UI
 65          var pbLabel = new TextBlock { Text = "剩余电量百分比" };
 66          pbLabel.Margin = new Thickness(0, 10, 0, 5);
 67          pbLabel.FontFamily = new FontFamily("Segoe UI");
 68          pbLabel.FontSize = 11;
 69  
 70          var pb = new ProgressBar();
 71          pb.Margin = new Thickness(0, 5, 0, 0);
 72          pb.Width = 200;
 73          pb.Height = 10;
 74          pb.IsIndeterminate = false;
 75          pb.HorizontalAlignment = HorizontalAlignment.Left;
 76  
 77          var pbPercent = new TextBlock();
 78          pbPercent.Margin = new Thickness(0, 5, 0, 10);
 79          pbPercent.FontFamily = new FontFamily("Segoe UI");
 80          pbLabel.FontSize = 11;
 81  
 82          // 防止分母为0
 83          if ((report.FullChargeCapacityInMilliwattHours == null) ||
 84              (report.RemainingCapacityInMilliwattHours == null))
 85          {
 86              pb.IsEnabled = false;
 87              pbPercent.Text = "N/A";
 88          }
 89          else
 90          {
 91              pb.IsEnabled = true;
 92              pb.Maximum = Convert.ToDouble(report.FullChargeCapacityInMilliwattHours);
 93              pb.Value = Convert.ToDouble(report.RemainingCapacityInMilliwattHours);
 94              pbPercent.Text = ((pb.Value / pb.Maximum) * 100).ToString("F2") + "%";
 95          }
 96  
 97          // 添加页面元素
 98          BatteryReportPanel.Children.Add(txt1);
 99          BatteryReportPanel.Children.Add(txt2);
100          BatteryReportPanel.Children.Add(txt3);
101          BatteryReportPanel.Children.Add(txt4);
102          BatteryReportPanel.Children.Add(txt5);
103          BatteryReportPanel.Children.Add(txt6);
104          BatteryReportPanel.Children.Add(pbLabel);
105          BatteryReportPanel.Children.Add(pb);
106          BatteryReportPanel.Children.Add(pbPercent);
107      }
108  
109      /// <summary>
110      /// 根据电池使用状态改变Theme色
111      /// </summary>
112      /// <param name="status"></param>
113      private void ChangRequestedTheme(BatteryStatus status)
114      {
115          switch (status)
116          {
117              case BatteryStatus.NotPresent:
118                  Debug.WriteLine(BatteryStatus.NotPresent.ToString());
119                  break;
120              case BatteryStatus.Discharging:
121                  //电池处于放电状态
122                  Debug.WriteLine(BatteryStatus.Discharging.ToString());
123                  //当电量百分比很低是可以采用 黑色主题
124                  this.RequestedTheme = ElementTheme.Dark;
125                  break;
126              case BatteryStatus.Idle:
127                  Debug.WriteLine(BatteryStatus.Idle.ToString());
128                  break;
129              case BatteryStatus.Charging:
130                  //电池处于充电状态
131                  Debug.WriteLine(BatteryStatus.Charging.ToString());
132                  //正常模式
133                  this.RequestedTheme = ElementTheme.Default;
134                  break;
135              default:
136                  break;
137          }
138      }
139  
140  
141  
142      /// <summary>
143      /// 获取 电池集 报告
144      /// </summary>
145      private async void RequestAggregateBatteryReport()
146      {
147          // 获取所有电池对象
148          var deviceInfo = await DeviceInformation.FindAllAsync(Battery.GetDeviceSelector());
149          foreach (DeviceInformation device in deviceInfo)
150          {
151              try
152              {
153                  // 获取单个电池对象
154                  var battery = await Battery.FromIdAsync(device.Id);
155  
156                  // 获取电池报告
157                  var report = battery.GetReport();
158  
159                  // 更新UI
160                  AddReportUI(BatteryReportPanel, report, battery.DeviceId);
161              }
162              catch { /* Add error handling, as applicable */ }
163          }
164      }
165  
166      private void GetBatteryReportButton_Click(object sender, RoutedEventArgs e)
167      {
168          // 清除 UI
169          BatteryReportPanel.Children.Clear();
170  
171  
172          if (AggregateButton.IsChecked == true)
173          {
174              // 获取多电池报告
175              RequestAggregateBatteryReport();
176          }
177          else
178          {
179              // 获取单电池报告
180              RequestIndividualBatteryReports();
181          }
182  
183          reportRequested = true;
184      }
185  }