小编Bha*_*esh的帖子

在我的Android项目中,我有两种类型的响应,其中两个响应是相同的,除了两个键.

回应1

{"fullName":"William Sherlock Scott Holmes","address":"221B Baker Street, London, England, UK","downloads":642,"rating":3,"repos":["https://link1","https://link2","https://link3"]}

回应2

{"name":"Sherlock","city":"London","downloads":642,"rating":3,"repos":["https://link1","https://link2","https://link3"]}

如果您看到响应,则只有两个键名称正在更改 fullName/name和address/city

我不想再为其他响应创建一个pojo.我的问题是:是否可以只使用一个Pojo来读取这两个响应？

public class AccountInfo {
    private String name;
    private String city;
    //other objects

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }
    //other setters and getters
}

任何帮助将不胜感激...

将Android Studio更新为v1.2.0后.在启动时,我得到以下日志,无法打开Android Studio.我正在使用Windows 7-64bit,看起来也像Ubuntu一样错误

此问题也在Android问题中报告,但仍未解决

java.lang.RuntimeException: java.lang.NullPointerException
    at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:178)
    at com.intellij.idea.MainImpl$1$1$1.run(MainImpl.java:52)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:738)
    at java.awt.EventQueue.access$300(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:699)
    at java.awt.EventQueue$3.run(EventQueue.java:697)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:708)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:362)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Caused by: java.lang.NullPointerException
    at com.android.tools.idea.welcome.AndroidVirtualDevice.<init>(AndroidVirtualDevice.java:81)
    at com.android.tools.idea.welcome.InstallComponentsPath.createComponentTree(InstallComponentsPath.java:89)
    at com.android.tools.idea.welcome.InstallComponentsPath.init(InstallComponentsPath.java:215)
    at com.android.tools.idea.wizard.DynamicWizardPath.attachToWizard(DynamicWizardPath.java:97)
    at com.android.tools.idea.wizard.DynamicWizard.addPath(DynamicWizard.java:233)
    at com.android.tools.idea.welcome.FirstRunWizard.init(FirstRunWizard.java:75)
    at com.android.tools.idea.welcome.FirstRunWizardHost.setupWizard(FirstRunWizardHost.java:100)
    at com.android.tools.idea.welcome.FirstRunWizardHost.getWelcomePanel(FirstRunWizardHost.java:92)
    at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeFrame.<init>(WelcomeFrame.java:68)
    at com.intellij.openapi.wm.impl.welcomeScreen.WelcomeFrame.showNow(WelcomeFrame.java:173)
    at com.intellij.idea.IdeaApplication$IdeStarter.main(IdeaApplication.java:302)
    at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:172)
    ... 16 more

任何帮助将不胜感激.

我刚刚开始使用Kotlin编程语言,它比Java更酷.我对静态方法和字段有一些疑问:

Q1:官方文件说

如果您将这些函数注释为@JvmStatic,Kotlin还可以为命名对象或伴随对象中定义的函数生成静态方法.

但是如果你看到下面我可以访问bar()方法作为静态方法,它可以在不使用@JvmStatic注释的情况下工作.但在官方文档上它的抛出错误 - > Kotlin静态方法.

Class C{
    companion object{
        @JvmStatic
        fun foo() { }
        fun bar();
    }
}
fun main(args: Array<String>) {
    C.foo();
    C.bar(); //this line works fine
}

Q2:我真的需要@JvmStatic并且@JvmField让事情变得静止吗？ 正如您在companion对象中看到的那样,事情正在按预期工作.

我在我的项目中使用Google Places API -我的项目中的PlaceAutocompleteFragment API来搜索位置,当用户选择位置然后使用位置lat-long获取记录并将其显示到ListView.

现在问题是每当用户点击PlaceAutocompleteFragment的清除按钮(X)时,我想要清除ListView项目,我需要听清楚按钮onClick吗？怎么做？


任何帮助将不胜感激.

autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
    @Override
    public void onPlaceSelected(Place place) {
        LatLng latLng=place.getLatLng();
        //hit web service, response parsing and add it to listview.
    }

    @Override
    public void onError(Status status) {
        Log.i(TAG, "An error occurred: " + status);
    }
});

目前，如果我想附加绑定，我会这样做

DataBindingUtil.setContentView(this, R.layout.main_activity);

我遇到了需要调用的自定义第三方活动的问题

setContentView(R.layout.main_activity);

如何将绑定附加到设置了布局的活动 setContentView