小编Cor*_*Roy的帖子

我刚刚创建了示例BB应用程序,可以选择日期.

DateField curDateFld = new DateField("Choose Date: ",
  System.currentTimeMillis(), DateField.DATE | DateField.FIELD_LEFT);

选择日期后,我需要将该long值转换为String,以便我可以轻松地将日期值存储在数据库中的某个位置.我是Java和Blackberry开发的新手.

long date = curDateFld.getDate();

我应该如何将这个长值转换为String？另外我想从String转换回long.我觉得我能用long l = Long.parseLong("myStr");吗？

我的项目无法使用持续时间的Gauva库进行编译,因为它似乎是用Java 1.8编译的,我在我的项目中使用Java 1.7.

哪个版本的Guava与Java 1.7兼容？

查看和断言listview是android espresso的预期大小的最佳方法是什么？

我写了这个匹配器,但不太清楚如何将它集成到测试中.

public static Matcher<View> withListSize (final int size) {
    return new TypeSafeMatcher<View> () {
        @Override public boolean matchesSafely (final View view) {
            return ((ListView) view).getChildCount () == size;
        }

        @Override public void describeTo (final Description description) {
            description.appendText ("ListView should have " + size + " items");
        }
    };
}

这似乎是正确的......

onView (withId (R.id.menu_delete)).check (matches (not (isDisplayed ())));

...但它抛出了这个异常:

android.support.test.espresso.NoMatchingViewException: No views in hierarchy found matching: with id: com.just10.android:id/menu_delete
If the target view is not part of the view hierarchy, you may need to use Espresso.onData to load it from one of the following AdapterViews:com.github.ksoichiro.android.observablescrollview.ObservableListView{3169f0f3 VFED.VC. .F...... 0,0-480,724 #102000a android:id/list}

不应该显示断言视图的最佳方法是什么？

如果在遵循通知时应用程序不在内存中,我就会遇到问题.不会创建backstack.我按照开发人员指南按照步骤操作.请告诉我我错过的位,否则我将必须通过我的所有意图路由HomeActivity,以便按照以下意图手动创建backstack.

AndroidManifest.xml:

<activity
    android:name=".activity.HomeActivity"
    android:clearTaskOnLaunch="true"
    android:configChanges="orientation|keyboard|keyboardHidden|screenSize"
    android:icon="@drawable/actionbar_logo"
    android:label="@string/activity_label_home"
    android:launchMode="singleTask"
    android:parentActivityName=".activity.Start"
    android:windowSoftInputMode="stateAlwaysHidden" >
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value=".activity.Start" />
    <intent-filter>
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>
<activity
    android:name=".activity.ChatActivity"
    android:configChanges="orientation|keyboard|keyboardHidden|screenSize"
    android:label="@string/activity_label_in_chat"
    android:parentActivityName=".activity.HomeActivity"
    android:windowSoftInputMode="stateHidden"
    tools:ignore="UnusedAttribute" >
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value=".activity.HomeActivity" />

    <intent-filter>
        <action android:name="android.intent.action.VIEW" />

        <category android:name="android.intent.category.DEFAULT" />

        <data android:mimeType="vnd.android.cursor.item/vnd.myapp.chat" />
    </intent-filter>
</activity>

建筑通知:

final String chatId = cursor.getString(cursor.getColumnIndexOrThrow(MessageColumns.CHAT));
final Intent chat = new Intent(c, ChatActivity.class);
chat.putExtra(ChatActivity.EXTRA_CHAT_ID, chatId);
PendingIntent intent = TaskStackBuilder.create(c).addNextIntentWithParentStack (chat).getPendingIntent (0, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder (c);
final NotificationManagerCompat …

我想在悬停时更改按钮的颜色.

这是我的xaml代码.

<Window x:Class="OfflineIM.UI.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Vytru | Offline IM" Height="300" Width="550" ResizeMode="CanMinimize" WindowStartupLocation="CenterScreen" Icon="/OfflineIM.UI;component/Images/368x368.ico">
    <Grid Name="MainGrid">
        <Grid Name="HeaderGrid" VerticalAlignment="Top" HorizontalAlignment="Center" Width="550" Height="130">

            <Image VerticalAlignment="Stretch" HorizontalAlignment="Right" Width="250" Margin="5,10,10,10" Source="Images\offlineIM-logo.png" />
        </Grid>
        <Grid Name="ContentGrid" VerticalAlignment="Bottom" HorizontalAlignment="Center" Height="160" Width="550">
            <Grid Margin="20,10,20,80" Background="#5F68686A">
                <TextBlock Margin="170,5,20,10" VerticalAlignment="Top" HorizontalAlignment="Left" Text="" Name="companyNameTextBlock" Foreground="#FF2B2D2E" TextAlignment="Justify" FontSize="12" FontWeight="Normal" />
                <TextBlock Margin="5,5,20,10" VerticalAlignment="Top" HorizontalAlignment="Left" Text="Company Name:" Foreground="#FF2B2D2E" TextAlignment="Justify" FontSize="12" FontWeight="Normal" />
                <TextBlock Margin="5,25,20,10" VerticalAlignment="Top" HorizontalAlignment="Left" Text="Number of Users:" Foreground="#FF2B2D2E" TextAlignment="Justify" FontSize="12" FontWeight="Normal" />
                <TextBlock Margin="170,25,20,10" VerticalAlignment="Top" HorizontalAlignment="Left" Text="" Name="NumberOfUsersTextBlock" …

为了测试目的，我已将红色LED灯用于通知，但是...

我是否需要检查设备是否具有LED（如果该设备不具有此功能），以及如何做到这一点？另外，LED颜色是否已预先确定？

我试图找到一些文档或主题来给我这些问题的答案，但是没有运气...

在Android Studio中使用Gradle来压缩库时,Proguard遇到了Lombok库的问题.我找到了一些配置信息来修复butterknife,我们使用的另一个注释库.

-keepattributes *Annotation*
-dontwarn butterknife.internal.**
-keep class **$$ViewInjector { *; }
-keepnames class * { @butterknife.InjectView *;}

有没有人知道要添加的标志让Lombok开心.

Proguard配置文件

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html

# Optimizations: If you don't want to optimize, use the
# proguard-android.txt configuration file instead of this one, which
# turns off the optimization flags.  Adding optimization introduces
# certain risks, since for example not all optimizations performed by
# ProGuard works on all versions of Dalvik.  The following flags …

我有一个数据驱动的集线器部分,可以很好地填充图像.视图模型包含我想要显示为工具提示的文本,但无法弄明白.

这是重要的片段:

<HubSection x:Uid="MyHub" x:Name="MyHubSection" Width="311">
   <HubSection.Header>
      <TextBlock x:Uid="HubMSectionHeader" 
                 Style="{StaticResource MainHubSectionHeaderStyle}" Text="Friends"/>
   </HubSection.Header>
   <DataTemplate>
      <StackPanel>
         <Button x:Name="InviteButton" Content="Send Invite" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Click="InviteButton_Click"/>
         <StackPanel >
            <Grid>
               <GridView ItemsSource="{Binding Friends}"  Background="{ThemeResource HubBackground}" x:Name="FriendGrid" >
                   <GridView.ItemTemplate >
                       <DataTemplate>
                           <Image Source="{Binding ProfilePhotoBitmap, Mode=TwoWay}" Height="100" Opacity="1" Stretch="Uniform" Tapped="Friend_Tapped"/>
                            <ToolTipService.ToolTip>
                                <TextBlock Text="{Binding FullName}"/>
                            </ToolTipService.ToolTip>
                         </DataTemplate>
                     </GridView.ItemTemplate>
                  </GridView>
               </Grid>
            </StackPanel>
         </StackPanel>
      </DataTemplate>
   </HubSection>

正如您所看到的,背景在弹出窗口后面扭曲了.它只发生在棒棒糖上!请不要被我的样式文件中的所有x_弄糊涂.我刚刚对代码进行了去标记.

在主题文件中:

 <style name="core" parent="Theme.AppCompat.Light">

    <!-- Popup menu -->
    <item name="android:popupMenuStyle">@style/x_popup_menu_theme</item>
    <item name="android:textAppearanceSmallPopupMenu">@style/x_popup_menu_small_text</item>
    <item name="android:textAppearanceLargePopupMenu">@style/x_popup_menu_large_text</item>

</style>

在v21/themes_styles.xml中

<style name="x_popup_menu_theme" parent="Widget.AppCompat.PopupMenu">
    <item name="android:popupBackground">@color/x_navy_dark</item>
</style>

<style name="x_popup_menu_large_text" parent="TextAppearance.AppCompat.Widget.PopupMenu.Large">
    <item name="android:textColor">@color/std_white</item>
</style>

<style name="x_popup_menu_small_text" parent="TextAppearance.AppCompat.Widget.PopupMenu.Small">
    <item name="android:textColor">@color/std_white</item>
</style>

如果我更改/删除样式,它的工作原理如下图所示.

<style name="x_popup_menu_theme" parent="Widget.AppCompat.PopupMenu">
</style>

<style name="x_popup_menu_large_text" parent="TextAppearance.AppCompat.Widget.PopupMenu.Large">
</style>

<style name="x_popup_menu_small_text" parent="TextAppearance.AppCompat.Widget.PopupMenu.Small">
</style>

我需要做大约5个链接请求,例如我有5个不同的调用,我想让它们按特定顺序串行不平行.

以下是我的观察结果的一些例子

Observable<ResponseBody> textsCall=EndpointFactory.provideEndpoint().getTexts(textsTask.getLanguage())
        .subscribeOn(Schedulers.newThread())
        .observeOn(AndroidSchedulers.mainThread());

Observable<AirportCombo> routesCall=EndpointFactory.provideEndpoint().getRoutes()
        .subscribeOn(Schedulers.newThread())
        .observeOn(AndroidSchedulers.mainThread());

实际上,我不知道rx java上有什么功能.

早先我已经实现了并行请求,现在我需要串行.

如果您需要并行方法,您可以:

Observable<ResponseResult> combined = Observable.zip(textsCall, routesCall, (textsBody, airportCombo) -> {
            //some parsing and other logic
            return new ResponseResult(flag);
        });