标签: android-databinding

目前，我正在使用data binding两种情况：

• views以片段方式访问
• 在布局中订阅数据view model。

当我与 进行比较时view binding，我发现两种方法都很好（view binding更好地访问views、data binding绑定数据），那么MVVM 应该首选哪种模式？

我应该只移动view binding并处理ViewModel-layout片段中的连接吗？

在最新的 Gradle 插件中，当我尝试访问适配器位置字段 IDE 时，显示为已弃用。建议使用getBindingAdapterPosition()而不是adapterPosition

但是当我尝试访问该字段getBindingAdapterPosition()IDE 时抛出错误：

Could not find accessor com.rizek.android.users.adapters.recyclerview.cart.ProductListAdapter.ExpandViewHolder.bindingAdapterPosition

我的 XML 文件：

        <ImageView
        android:id="@+id/imageView14"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:onClick="@{()->frequencyOptionInteractor.onRecurringOptionChanged(recurringViewHolder.adapterPosition,frequencyOption)}"
        android:padding="8dp"
        app:layout_constraintBottom_toBottomOf="@+id/linearLayout12"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@+id/linearLayout12"
        app:srcCompat="@drawable/frequency_option_selector"
        bind:stateActivated="@{frequencyOptionAdapter.selectedPosition==recurringViewHolder.bindingAdapterPosition}" />

我正在尝试按以下说明创建自定义设置器：https : //developer.android.com/tools/data-binding/guide.html#custom_setters

我的看法是：

<data>
        <variable name="viewModel"
        type="com.example.feed.DummyViewModel" />
</data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:imageUrl="@{viewModel.imageUrl}" />
    </LinearLayout>
</layout>

绑定是：

package com.example.feed;

import android.databinding.BaseObservable;
import android.databinding.BindingAdapter;
import android.widget.ImageView;

public class DummyViewModel extends BaseObservable {

    @BindingAdapter("bind:imageUrl")
    public static void loadImage(ImageView view, String url) {
// nothing yet
    }
}

文楼我得到错误：

Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
> java.lang.RuntimeException: Found data binding errors.
 ****/ data binding error ****msg:Could not find accessor com.example.feed.DummyViewModel.imageUrl file:/Users/tse/t/app/src/main/res/layout/fragment_main.xml loc:20:28 - 20:45 ****\ data binding error …

我试图得到drawables取决于函数是假还是真.但我做错了什么.所以任何帮助都表示赞赏

            <ImageView
              android:layout_width="24dp"
              android:layout_height="24dp"
              android:onClick="@{() -> handler.onVoteClicked(gameFeed.uid)}"
              android:src="@{() -> handler.existInList(feed.ratings,feed.uid) ? @drawable/ic_star_border : @drawable/ic_star}"
              android:layout_gravity="center_vertical"/>

这是我试图从我的处理程序调用的函数.

  public boolean existInList(Map<String,Boolean> ratings, String userId) {
    for (Map.Entry<String, Boolean> entry : ratings.entrySet()) {
      if(entry.getValue().equals(userId)) {
       return true;
      }
    }
    return false;
  }

添加了我得到的错误

Execution failed for task ':app:compileDebugJavaWithJavac'.
> java.lang.RuntimeException: Found data binding errors.
  ****/ data binding error ****msg:Cannot find the proper callback class 
for android:src. Tried android.graphics.drawable.Drawable but it has 4 abstract methods, should have 1 abstract methods. file:/Users/brahim/ProjectNinjo/app/src/main/res/layout/adapter_feed_row.xml loc:108:33 - 108:135 …

我想运行可见的进度条，直到图像加载到imageview中。我想通过绑定适配器实现它。我有一个具有imageUrl的bindingadpter的CustomBinder类。这是我的自定义活页夹

public class CustomBinders {

    static ImageLoader imageLoader;
    public static DisplayImageOptions options;
    private static final String TAG = "CustomBinders";

    @BindingAdapter({"imageUrl"})
    public static void loadImage(ImageView view, String imageUrl){
        imageLoader= ImageLoader.getInstance();
        options = StaticMethods.setUIL();
        Log.d(TAG, "loadImage: ");
        imageLoader.displayImage(imageUrl, view, options, new SimpleImageLoadingListener() {
            @Override
            public void onLoadingStarted(String imageUri, View view) {

            }

            @Override
            public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
                String message = null;
                switch (failReason.getType()) {
                    case IO_ERROR:
                        message = "Input/Output error";
                        break;
                    case DECODING_ERROR:
                        message = "Image can't …

我在使用带有BaseAdapter的Android DataBinding为Spinner实现CustomAdapter时遇到问题.

数据有两个值.我想使用两个TextView.CustomAdapter必须从BaseAdapter继承,ArrayAdapter的简单变体仅支持一个TextView.从长远来看,第二个TextView可能是一个ImageView,因此将两个值合并为一个String以便能够使用ArrayAdapter仍然无济于事.

我也尝试过:为了确保这个想法和Spinner正常工作,我实现了一个没有DataBinding的版本我在chrislizh项目的https://github.com/chrislizh/SpinnerTwoWayDataBindingDemo上实现了我的数据绑定实现,它正在使用ArrayAdapter.我也尝试调用:binding.executePendingBindings(),并试图不使用ViewHolder模式.

问题导致细节:该项目是关于行星.旋转器允许选择行星.每个行星都有一个名字和一个距离.将显示这两个值.我实现CustomAdapter的结果,名为PlanetAdapter,DataBinding在选择后显示第一个项目两次.查看截图.选择除第一个项目之外的任何其他行星,使用选择"切换"其位置,并继续显示两次.这样,显示的列表中始终缺少一个行星.

PlanetAdapter的代码以及在MainActivty的onCreate方法中创建它的调用:

PlanetAdapter

public class PlanetAdapter extends BaseAdapter
{
    private int itemLayoutResourceId;
    private final List<Planet> planets;
    private LayoutInflater inflater;

    public PlanetAdapter(@NonNull Context context, @LayoutRes int itemLayoutResourceId, List<Planet> planets)
    {
        inflater = LayoutInflater.from(context);
        this.itemLayoutResourceId = itemLayoutResourceId;
        this.planets = planets;
    }

    @Override
    public int getCount()
    {
        return planets.size();
    }

    @Override
    public Object getItem(int position)
    {
        return planets.get(position);
    }

    @Override
    public long getItemId(int position)
    {
        return position;
    }

    @Override
    public View getView(int position, View convertView, …

我试图在我现有的项目中使用DataBinding.根据文档,我在app模块的build.gradle中添加了以下行,并编译了项目.

 dataBinding {
    enabled = true
}

我收到以下错误:

Could not resolve all dependencies for configuration ':app:devDebugCompileClasspath'.

找不到com.android.databinding:baseLibrary:3.0.0-alpha3.在以下位置搜索:file:/ C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3. pom文件:/ C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar文件:/ C :/Users/incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom文件:/ C:/ Users /incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar文件:/ C:/ Users/incnayak/AppData/Local/Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom文件:/ C:/ Users/incnayak/AppData/Local /Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://jcenter.bintray.com/com/android/datab inding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jcenter.bintray.com/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3 .jar https://jitpack.io/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jitpack.io/com/android/databinding/baseLibrary/3.0 .0-alpha3/baseLibrary-3.0.0-alpha3.jar https://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https ://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar 必需:project:app找不到com.android.databinding:baseLibrary :3.0.0-素α3.在以下位置搜索:file:/ C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3. pom文件:/ C:/Users/incnayak/AppData/Local/Android/sdk/extras/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar文件:/ C :/Users/incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom文件:/ C:/ Users /incnayak/AppData/Local/Android/sdk/extras/google/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar文件:/ C:/ Users/incnayak/AppData/Local/Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom文件:/ C:/ Users/incnayak/AppData/Local /Android/sdk/extras/android/m2repository/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar https://jcenter.bintray.com/com/android/datab inding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jcenter.bintray.com/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3 .jar https://jitpack.io/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https://jitpack.io/com/android/databinding/baseLibrary/3.0 .0-alpha3/baseLibrary-3.0.0-alpha3.jar https://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.pom https ://maven.fabric.io/public/com/android/databinding/baseLibrary/3.0.0-alpha3/baseLibrary-3.0.0-alpha3.jar 必需条件:project:app> com.android.databinding:library:1.3 .1项目:app> com.android.databinding:adapter:1.3.1

任何人都可以帮我解决这个问题吗？我正在使用Android Studio 3.0 Canary 3.

我的项目级别是gradle

buildscript {
repositories {
    jcenter() …

我在Digital Ocean服务器上安装了Jenkins（3 GB内存/ 20 GB磁盘/ Ubuntu 16.04.3 x64）

我在/ opt / android-sdk中安装了Android SDK，并修复了让Jenkins用户具有RW访问权限的权限。

该项目在我的本地计算机上编译，但是由于某种原因在远程服务器上失败。我知道设置很好，因为我创建了一个虚拟的android项目，并且可以在该服务器上正常编译，但是我的实际项目却不行。

有关我的例外情况的摘要以及许多详细信息，请参见：https : //scans.gradle.com/s/owahozyrl4qwg

例外

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:transformDexArchiveWithDexMergerForDebug'.
> com.android.build.api.transform.TransformException: java.lang.IllegalArgumentException: java.lang.IllegalArgumentException

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

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformDexArchiveWithDexMergerForDebug'.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63)
    at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88)
    at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43) …

Android Studio 3.2 Canary11

Gradle Tool 3.2.0-alpha11

kapt的com.android.databinding与3.2.0-alpha11不兼容,无法构建/运行apk.

同时,它的最大工作量为3.2.0-alpha10

```任务执行失败':app:kaptGenerateStubsDevDebugKotlin'.

无法解析配置':app:kapt'的所有文件.找不到com.android.databinding:编译器:3.2.0-alpha11.在以下位置搜索:file:/Users/xxxx/Library/Android/sdk/extras/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom文件:/ Users /xxx/Library/Android/sdk/extras/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar文件:/ Users/xxx/Library/Android/sdk/extras /google/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom文件:/ Users/xxx/Library/Android/sdk/extras/google/m2repository/com/android /databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar文件:/Users/xxx/Library/Android/sdk/extras/android/m2repository/com/android/databinding/compiler/3.2.0 -alpha11/compiler-3.2.0-alpha11.pom文件:/Users/xxx/Library/Android/sdk/extras/android/m2repository/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0 -alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://jcenter.bintray.com/com/android/databindin g/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2 .0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://dl.google .com/dl/android/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://dl.google.com/dl/android/maven2/com/ android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0 -alpha11.pom https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2 /com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0- alpha11/compiler-3.2.0-alpha11.jar https://dl.google.com/dl/android/maven2/com/android/databinding/compiler /3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://dl.google.com/dl/android/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2. 0-alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://jcenter.bintray.com/com/ android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler -3.2.0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https:// dl .google.com/dl/android/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://dl.google.com/dl/android/maven2/ com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2 .0-alpha11.pom https://jcenter.bintray.com/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://maven.fabric.io/public/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.pom https://maven.fabric.io/ public/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0 -alpha11/compiler-3.2.0-alpha11.pom https://repo.maven.apache.org/maven2/com/android/databinding/compiler/3.2.0-alpha11/compiler-3.2.0-alpha11.jar 必填通过:project:app```

问题

我有这个BindingAdapter要Glide在我的图书馆模块中使用加载图像

import android.widget.ImageView
import androidx.databinding.BindingAdapter
import com.bumptech.glide.Glide

@BindingAdapter("imageUrl")
fun loadImage(view: ImageView, imageUrl: String) {
    Glide.with(view)
        .load(imageUrl)
        .into(view)
}

我试图像这样使用适配器

   <ImageView
            ...
            app:imageUrl="@{`http://pngimg.com/uploads/alfa_romeo/alfa_romeo_PNG75.png`}"
            ... />

但是越来越

**** /数据绑定错误**** msg：在android.widget.ImageView上找不到参数类型为java.lang.String的属性“ app：imageUrl”的设置器。

奇怪的是，当我将from 转换BindingAdapter为Javafrom时Kotlin，它起作用了。

public class ImageViewBindingAdapter {

    @BindingAdapter("imageUrl")
    public static void setImageUrl(ImageView view, String url) {
        Glide.with(view)
                .load(url)
                .into(view);
    }
}

注意：此问题仅在library模块中存在。App模块与Kotlin文件完美配合。

我究竟做错了什么 ？