小编the*_*ole的帖子

我发现这个位置上如何使用〔实施例runOnUiThreaed的方法,但我不知道如何使用它.

我在主要活动中设置了列表适配器

    // Set a gobal reference to the list adapter and the list respectivly 

    ListAdapter listAdapter;
    static ArrayList<String> list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // some code

        adapter = new ListAdapter(getActivity(), R.layout.item_layout, list);
        listView.setAdapter(adapter);

        // some code

    }

我在这里调用服务处理程序类的列表适配器

public class ListAdapter {

    // some code

    ServiceHandler sh = new ServiceHandler();

    sh.run();
}

这是我更新列表和列表适配器的类中的.run()方法ServiceHandler

public void run(Adapter listAdapter, ArrayList<String> list){

    // some code

    list[0] = "foo";
    listAdapter.notifyDataSetChanged;
}

但是我在运行时遇到这个错误 …

通过远程查看器，VNC我可以在远程机器上启动 android 模拟器

emulator -avd emu1 

但是通过远程机器上的 SSH 我收到错误

emulator: INFO: QtLogger.cpp:68: Warning: could not connect to display  ((null):0, (null))


emulator: INFO: QtLogger.cpp:68: Info: Could not load the Qt platform plugin "xcb" in "/opt/androidtest/android-sdk/emulator/lib64/qt/plugins" even though it was found. ((null):0, (null))


Fatal: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb.
 ((null):0, (null))
emulator: INFO: QtLogger.cpp:68: Fatal: This application failed to start …

是的,我正在使用Picasso来加载位图.究其原因,我在我的适配器,而在另一个装载位图的一部分解码的URI,和我读到这里是

即使您的URL为空,也应始终致电Picasso.这样它就知道图像视图被回收了.

所以我试过这个....

Bitmap bitMap;

...

Picasso.with(getContext())
    .load(bitMap)
    .into(imageView);

但我得到了这个错误

无法解析方法'load(android.graphics.Bitmap)'

我有一个AppBarLayout嵌套的内部CoordinatorLayout

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.michael.blemanager.Activities.ColorPickerActivity.Color1">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_color1"/>

</android.support.design.widget.CoordinatorLayout>

这是包含的布局 content_color1

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.example.michael.blemanager.Activities.ColorPickerActivity.Color1"
    tools:showIn="@layout/activity_color1">

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@color/default_background"
        >

        /....

    </LinearLayout>

</android.support.constraint.ConstraintLayout>

由于某种原因,AppBarLayout重叠了ConstraintLayout

查看工具栏与色环重叠的位置？如何防止重叠？

我无法找到这个问题的详细答案,或者至少没有找到我能理解的答案.

我正在尝试设置Volley来从iTunes中下载JSON对象.然后我想解析对象,以获取他们的图像URL.

例如,这是iTunes JSON对象URL

String url = "https://itunes.apple.com/search?term=michael+jackson";

所以我在这里设置了我的代码来获取这个对象(当然使用教程)

String url = "https://itunes.apple.com/search?term=michael+jackson";

JsonObjectRequest jsonRequest = new JsonObjectRequest
        (Request.Method.GET, url, null, new Downloader.Response.Listener // Cannot resolve symbol Listener
                <JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                // the response is already constructed as a JSONObject!
                try {
                    response = response.getJSONObject("args");
                    String site = response.getString("site"),
                            network = response.getString("network");
                    System.out.println("Site: "+site+"\nNetwork: "+network);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        }, new Downloader.Response.ErrorListener // Cannot resolve symbol ErrorListener
                () {

            @Override
            public …

我是调试器的新手。当我浏览一行代码时，我想知道如何退后一步。现在我意识到代码无法向后执行？如果要退回到旧行，是否必须在调试中重新启动活动？

另外，如果您不介意，什么是force-step-into命令？

如何获取 iOS 模拟器上安装的所有应用程序的捆绑包标识符？

我想通过脚本自动卸载名为 WebDriverAgent（由 Appium 使用）的特定应用程序。

例如

xcrun simctl uninstall booted com.example.apple-samplecode.UICatalog

我正在使用IntelliJ,并且能够通过按下播放按钮,然后从终端运行此命令,通过GUI构建和运行我的Gradle项目

./gradlew --stacktrace deploy

生成此控制台输出,并且构建失败:

FAILURE: Build failed with an exception.

* What went wrong:
Could not create service of type ScriptPluginFactory using BuildScopeServices.createScriptPluginFactory().
> Could not create service of type PluginResolutionStrategyInternal using BuildScopeServices.createPluginResolutionStrategy().

* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Exception is:
org.gradle.internal.service.ServiceCreationException: Could not create service of type ScriptPluginFactory using BuildScopeServices.createScriptPluginFactory().
        at org.gradle.internal.service.DefaultServiceRegistry$FactoryMethodService.invokeMethod(DefaultServiceRegistry.java:816)
        at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.create(DefaultServiceRegistry.java:767)
        at org.gradle.internal.service.DefaultServiceRegistry$ManagedObjectServiceProvider.getInstance(DefaultServiceRegistry.java:571)
        at org.gradle.internal.service.DefaultServiceRegistry$SingletonService.get(DefaultServiceRegistry.java:628)
        at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.assembleParameters(DefaultServiceRegistry.java:780)
        at org.gradle.internal.service.DefaultServiceRegistry$FactoryService.create(DefaultServiceRegistry.java:766)
        at …

比方说,我如何获取现有的位图

Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.somebitmap);

并编写一个返回位图的黑暗版本的方法？

private Bitmap darkenBitMap(Bitmap bm) { }

到目前为止,我一直在尝试使用Paint和Canvas但没有结果.

当我ANDROIDX_TEST_ORCHESTRATOR在testOptions

testOptions {
    unitTests.includeAndroidResources = true
    animationsDisabled = true
    execution 'ANDROIDX_TEST_ORCHESTRATOR'
}

我运行仪器测试

./gradlew connectedStudioDebugAndroidTest --stacktrace

我收到未找到测试的错误

com.android.builder.testing.ConnectedDevice > No tests found.[emu1(AVD) - 9] FAILED 
No tests found. This usually means that your test classes are not in the form that your test runner expects (e.g. don't inherit from TestCase or lack @Test annotations).

当我ANDROIDX_TEST_ORCHESTRATOR在testOptions

testOptions {
    unitTests.includeAndroidResources = true
    animationsDisabled = true
    // execution 'ANDROIDX_TEST_ORCHESTRATOR'
}

测试运行。

那么我怎样才能让测试运行ANDROIDX_TEST_ORCHESTRATOR呢？

编辑

我取得了一些进展：androidTests 在我的真实设备 …