小编tcc*_*288的帖子

我下载了一个示例项目来学习如何制作UIPageViewController,我试图实际上分叉该项目并需要添加第三方库.现在,它看起来我的项目中没有.xcworkspace文件.当我尝试安装cocoapods时,我首先运行

sudo gem install cocoapods - 在我的终端的特定项目目录中

pod install - 在同一目录中

我在终端"项目目录中找不到podfile"时收到错误.

这是因为我没有.xcworkspace文件吗？我正确安装podfile吗？

我正在尝试调用 FlickR API，但在 response.body() 返回 null 时遇到了困难。

我不确定它是否与我的 JSON/POJO 映射有关，但是当我调用 FlickR 时，我无法弄清楚如何访问来自 Retrofit 的响应。我知道我的呼叫正在成功完成，因为我实际上能够通过日志拦截器查看 JSON。

模型：

public class Model {

Photos photos;
int code;
String stat;
String message; // when you text = null

public class Photos {

    @SerializedName("page")
    @Expose
    private int page;
    @SerializedName("pages")
    @Expose
    private int pages;
    @SerializedName("perpage")
    @Expose
    private int perpage;
    @SerializedName("total")
    @Expose
    private String total;
    @SerializedName("photo")
    @Expose
    private List<Photo> photo = new ArrayList<Photo>();

    /**
     * @return The page
     */
    public int getPage() {
        return page;
    }

    /** …

我Collection在 Cloud Firestore 中有一个有一定数量的项目，我们称之为Collection“X”。这个项目的数量将不断变化。在任何给定的时间，我想听听这个项目的数量Collection并whereEqualto()在一个Query基于另一个“集合”对象，我们称之为“Y”：

Query queryStore = FirebaseFirestore.getInstance()
            .collection("Y")
            .whereEqualTo(USER_ID_LABEL,  "item 1 from X")
            .whereEqualTo(USER_ID_LABEL,  "item 2 from X")
            .whereEqualTo(USER_ID_LABEL,  "item 3 from X");
            //Could be more than 3, could be less than 3, constantly changing

本质上，数量 whereEqualTo()将是动态的。

这种类型的查询可能吗？

我在 Retrofit 方面遇到了困难，因为我试图了解我应该在response.body()返回的内容中看到什么。

我想我的 JSON 到 POJO 转换中有一个映射错误，因为当我将它打印到日志时我没有看到正确的响应。

这是我看到的回应：

V/RESPONSE_BODY: response:com.troychuinard.flickr_test.Model.Model@36b2e4c9

我希望这个响应只是 JSON 数据。我知道我正在对 FlickR 进行正确调用，因为我正在使用日志拦截器查看 JSON：

https://api.flickr.com/services/rest/?method=flickr.photos.getRecent&api_key=1c448390199c03a6f2d436c40defd90e&format=json&nojsoncallback=1&extras=url_m&text=test

模型：

public class Model {

Photos photos;
int code;
String stat;
String message; // when you text = null

public class Photos {

    @SerializedName("page")
    @Expose
    private int page;
    @SerializedName("pages")
    @Expose
    private int pages;
    @SerializedName("perpage")
    @Expose
    private int perpage;
    @SerializedName("total")
    @Expose
    private String total;
    @SerializedName("photo")
    @Expose
    private List<Photo> photo = new ArrayList<Photo>();

    /**
     * @return The page
     */
    public int getPage() …

我正在使用此处的FirebaseRecyclerAdapter文档.

基本上,我想滚动到顶部,RecyclerView因为项目被添加到Firebase.这很棘手,因为我实际上并没有用一个ArrayList或任何列表初始化适配器.Firebase通过以下方式处理所有数据管理FirebaseRecyclerAdapter.

这是我的基本内容onCreateView():

 @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    final View v = inflater.inflate(R.layout.fragment_new, container, false);
    Log.v("TAG", "ON CREATE CALLED FROM NEW");

    mRecyclerview = (RecyclerView) v.findViewById(R.id.list);
    mRecyclerview.setItemAnimator(new FadeInUpAnimator());


    mLayoutManager = new LinearLayoutManager(getContext());
    mLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    mLayoutManager.setReverseLayout(true);
    mLayoutManager.setStackFromEnd(true);

    mRecyclerview.setLayoutManager(mLayoutManager);

    return v;
}

我的适配器:

    @Override
public void onStart() {
    super.onStart();

    mFireAdapter = new FirebaseRecyclerAdapter<Poll, PollHolder>(Poll.class, R.layout.latest_item, PollHolder.class, mBaseRef.child("Polls")) {
        @Override
        protected void …

我想测试ViewHolder我每个人中包含的文本RecyclerView：

@RunWith(AndroidJUnit4.class)
public class EspressoTest {

    private Activity mMainActivity;
    private RecyclerView mRecyclerView;
    private int res_ID = R.id.recycler_view_ingredients;
    private int itemCount = 0;

    //TODO: What is the purpose of this rule as it relates to the Test below?
    @Rule
    public ActivityTestRule<MainActivity> firstRule = new ActivityTestRule<>(MainActivity.class);


    //TODO: Very confused about Espresso testing and the dependencies required; it appears Recyclerview
    //TODO: Requires additional dependencies other than those mentioned in the Android documentation?
    //TODO: What would be best method of …

我正在处理一个项目并提交给我的一位同行审查。在他们之前的评论中，他说我的keystore文件需要保存在相对路径中。我正在通过GitHub. 目前，我的keystore文件保存在我项目的根目录中。另外，在我的build.gradle，我有以下内容：

signingConfigs {
    config {
        keyAlias 'Udacity'
        keyPassword 'xxxxxxxx'
        storeFile file('/Users/user/Applications/LiveVotingUdacity/livevotingkeystore')
        storePassword 'xxxxxx'
    }
}

如何保存到相对路径？我很困扰。

我有一个 RecyclerView 并将项目添加到mCommentArrayList索引 0。当新项目 (CardViews) 添加到 RecyclerView 时，我试图在视图顶部创建一个滑入动画。

我知道有可以使用的库，我什至探索过https://github.com/wasabeef/recyclerview-animators。但是，文档有限，我不确定要采取什么方法。

请注意，我将所有新项目添加到我的mCommentArrayListat 中，index 0以便它们出现在视图的顶部。我知道在适配器中有一些工作要做，特别是onBindViewHolder()，但我不知道确切地放什么来激活动画。

我首先调用 Firebase 查找数据以填充 RecyclerView：

    mUpdateRef.addListenerForSingleValueEvent(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            setImage(dataSnapshot);
            setQuestion(dataSnapshot);
            createInitialCommentIDArray(dataSnapshot);
            mNumberOfCommentsAtPoll = (int) dataSnapshot.child(COMMENTS_LABEL).getChildrenCount();
            for (int i = 0; i < mNumberOfCommentsAtPoll; i++) {
                String commentID = (String) dataSnapshot.child(COMMENTS_LABEL).child(mCommentIDArrayList.get(i)).child("COMMENT").getValue();
                Log.v("COMMENT_ID", "The comment ID is " + commentID);
                String userID = (String) dataSnapshot.child(COMMENTS_LABEL).child(mCommentIDArrayList.get(i)).child("USER_ID").getValue();
                Log.v("USER_ID", "The user ID is " + userID);
                mCommentArrayList.add(0, new …

我试图在模拟器或设备上运行我的应用程序。当我单击Android Studio顶部的“运行”按钮时，该应用程序未运行，仅在下面列出了该消息：

/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/bin/java "-Dgradle.home=/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1" -Dtools.jar=/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/tools.jar -Didea.launcher.port=7533 "-Didea.launcher.bin.path=/Applications/Android Studio.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/groovy-all-2.4.4.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/ant-1.9.6.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/ant-launcher-1.9.6.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-base-services-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-base-services-groovy-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-cli-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-core-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-docs-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-installation-beacon-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-jvm-services-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-launcher-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-logging-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-messaging-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-model-core-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-model-groovy-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-native-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-open-api-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-process-services-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-resources-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-tooling-api-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-ui-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/gradle-wrapper-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-announce-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-antlr-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-build-comparison-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-build-init-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-code-quality-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-dependency-management-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-diagnostics-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-ear-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-ide-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-ide-native-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-ide-play-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-ivy-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-jacoco-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-javascript-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-jetty-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-language-groovy-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-language-java-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-language-jvm-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-language-native-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-language-scala-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-maven-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-osgi-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-platform-base-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-platform-jvm-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-platform-native-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-platform-play-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-plugin-development-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-plugin-use-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-plugins-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-publish-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-reporting-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-resources-http-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-resources-s3-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-resources-sftp-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-scala-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-signing-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-sonar-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-test-kit-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-testing-base-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-testing-jvm-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-testing-native-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/gradle-tooling-api-builders-2.14.1.jar:/Applications/Android Studio.app/Contents/gradle/gradle-2.14.1/lib/plugins/ivy-2.2.0.jar:/Applications/Android Studio.app/Contents/lib/idea_rt.jar" com.intellij.rt.execution.application.AppMain org.gradle.launcher.GradleMain …

看起来XCode推出了一个新的更新.这个问题似乎是持久的,即使iTunes Store在"最近30天安装的更新"部分中发布更新,iTunes Store也不会呈现更新.重新启动后,我会再次提示更新,即使我已经完成了两次.最终,当我打开XCode时,更新不适用(它仍显示7.3,而不是7.3.1):