Question

我想在iOS上使用Gluon Mobile的PositionService。我编写了一个在桌面上运行的小型示例应用程序，提供（按预期）假位置更改，以及在Android上。但是，在iOS模拟器上，不会调用侦听器。以下是代码的相关部分：

public class BasicView extends View {

        private static final Logger LOGGER = Logger.getLogger(BasicView.class.getName());

        final Label label;

        public BasicView(String name) {
            super(name);
            label = new Label();
            VBox controls = new VBox(15.0, label);
            controls.setAlignment(Pos.CENTER);
            setCenter(controls);
            // get current position
            Platform p = PlatformFactory.getPlatform();
            PositionService ps = p.getPositionService();
            outputPos(ps.getPosition());
            ps.positionProperty().addListener((obs, oldPos, newPos) -> {
                LOGGER.log(Level.INFO, "\nobs: {0}\noldPos: {1}\nnewPos: {2}",
                        new Object[]{obs, oldPos, newPos});
                outputPos(newPos);
            });
        }

        private void outputPos(Position p) {
            if (p != null) {
                label.setText(String.format("We are currently here: %f %f",
                        p.getLatitude(),
                        p.getLongitude()));
            }
        }

        @Override
        protected void updateAppBar(AppBar appBar) {
            appBar.setNavIcon(MaterialDesignIcon.MENU.button(e -> System.out.println("Menu")));
            appBar.setTitleText("Basic View");
            appBar.getActionItems().add(MaterialDesignIcon.SEARCH.button(e -> System.out.println("Search")));
        }

    }

我已经添加了libCharm.a，但据我所知，这里不需要它。

我还发现了有关更新info.plist的提示，如下所示，但无论有没有，都不会调用监听器。

    <key>UIRequiredDeviceCapabilities</key>
    <array>
            <string>armv7</string>
            <string>location-services</string>
    </array>
    ...
    <key>NSLocationWhenInUseUsageDescription</key>
            <string>Location is required to find out where you are</string>
    <key>NSLocationAlwaysUsageDescription</key>
            <string>Location is required to find out where you are</string>

我看到的关于位置的唯一输出是：

Aug 27, 2016 1:37:31 PM com.gluonhq.charm.down.ios.IOSPositionService <init>
INFO: Location Manager configured with desiredAccuracy 10.00 and distanceFilter 100.00

Aug 27, 2016 1:37:31 PM com.gluonhq.charm.down.ios.IOSPositionService <init>
INFO: Telling LocationManager to start updating location.

我想我在这里遗漏了一些东西......一如既往，非常感谢任何帮助。

编辑：对不起，忘了build.gradle：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'org.javafxports:jfxmobile-plugin:1.0.8'
    }
}

apply plugin: 'org.javafxports.jfxmobile'

repositories {
    jcenter()
    maven {
        url 'http://nexus.gluonhq.com/nexus/content/repositories/releases'
    }
}

mainClassName = 'com.thomaskuenneth.gluon.positionservicedemo.PositionServiceDemo'

dependencies {
    compile 'com.gluonhq:charm:3.0.0'

    androidRuntime 'com.gluonhq:charm-android:3.0.0'
    iosRuntime 'com.gluonhq:charm-ios:3.0.0'
    desktopRuntime 'com.gluonhq:charm-desktop:3.0.0'
}

jfxmobile {
    android {
        manifest = 'src/android/AndroidManifest.xml'
        compileSdkVersion = 23
    }
    ios {
        infoPList = file('src/ios/Default-Info.plist')
        forceLinkClasses = [
                'com.gluonhq.**.*',
                'io.datafx.**.*',
                'javax.annotations.**.*',
                'javax.inject.**.*',
                'javax.json.**.*',
                'org.glassfish.json.**.*'
        ]
    }
}

Answer 1

我遵循JoséPereda的建议并升级到Gluon Mobile 4.完成以下步骤后，我在iPad模拟器中看到了位置变化。所以，我建议任何人遇到与我在问题中提到的相同的困难，尝试升级。这解决了我的问题。

按如下方式更新build.gradle：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'org.javafxports:jfxmobile-plugin:1.1.1'
    }
}

apply plugin: 'org.javafxports.jfxmobile'

repositories {
    jcenter()
    maven {
        url 'http://nexus.gluonhq.com/nexus/content/repositories/releases'
    }
}

mainClassName = 'com.thomaskuenneth.gluon.positionservicedemo.PositionServiceDemo'

dependencies {
    compile 'com.gluonhq:charm:4.0.1'
}

jfxmobile {
    downConfig {
        version '3.0.0'
        plugins 'display', 'lifecycle', 'statusbar', 'storage', 'position'
    }
    android {
        manifest = 'src/android/AndroidManifest.xml'
        androidSdk = "/Users/thomas/Library/Android/sdk"
        compileSdkVersion = 24
    }
    ios {
        infoPList = file('src/ios/Default-Info.plist')
        forceLinkClasses = [
                'com.gluonhq.**.*',
                'io.datafx.**.*',
                'javax.annotations.**.*',
                'javax.inject.**.*',
                'javax.json.**.*',
                'org.glassfish.json.**.*'
        ]
    }
}

由于Charm Down API略有改变，请修改访问位置服务的代码，如下所示：

package com.thomaskuenneth.gluon.positionservicedemo;

import com.gluonhq.charm.down.Services;
import com.gluonhq.charm.down.plugins.Position;
import com.gluonhq.charm.down.plugins.PositionService;
import com.gluonhq.charm.glisten.control.AppBar;
import com.gluonhq.charm.glisten.mvc.View;
import com.gluonhq.charm.glisten.visual.MaterialDesignIcon;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.geometry.Pos;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;

public class BasicView extends View {

    private static final Logger LOGGER = Logger.getLogger(BasicView.class.getName());

    final Label label;

    public BasicView(String name) {
        super(name);
        label = new Label();
        VBox controls = new VBox(15.0, label);
        controls.setAlignment(Pos.CENTER);
        setCenter(controls);
        Services.get(PositionService.class).ifPresent(serivce -> {
            serivce.positionProperty().addListener((obs, oldPos, newPos) -> {
                LOGGER.log(Level.INFO, "\nobs: {0}\noldPos: {1}\nnewPos: {2}",
                        new Object[]{obs, oldPos, newPos});
                outputPos(newPos);
            });
        });
    }

    private void outputPos(Position p) {
        if (p != null) {
            label.setText(String.format("We are currently here: %f %f",
                    p.getLatitude(),
                    p.getLongitude()));
        }
    }

    @Override
    protected void updateAppBar(AppBar appBar) {
        appBar.setNavIcon(MaterialDesignIcon.MENU.button(e -> System.out.println("Menu")));
        appBar.setTitleText("Basic View");
        appBar.getActionItems().add(MaterialDesignIcon.SEARCH.button(e -> System.out.println("Search")));
    }

}

在早期版本中，似乎需要在src / ios / jniLibs中包含文件ibCharm.a。使用Gluon 4，我一直看到错误，直到我删除文件。我假设由于Charm Down的重构，在这个目录中不再需要lib。

另外，请注意您需要编辑Default-Info.plist，如下面有关PositionService的Charm Down文档中所述。我已在我的问题中描述了这一点。截至今天，该文件没有提及考虑添加

<string>location-services</string>

到

<key>UIRequiredDeviceCapabilities</key>
<array>
    ...

但我认为如果你的应用程序需要位置服务并且不会以其他方式运行，这可能是一个好主意。也许iOS专家可以对此发表评论。

如何在iOS上的Gluon Mobile中使用PositionService？

1 个答案: