Question

“Android Studio”显示错误消息“类型参数T具有不兼容的上限：ViewDataBinding和ActivityChecklistsBinding。

ActivityChecklistsBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_checklists);

在更新ADK之前，它可以正常工作。有什么想法有什么不对吗？

Answer 1

我遇到了同样的问题。我尝试了一些清洁和重建项目。

但是，在我选择File -> Invalidate Caches / Restart

之后，它起了作用

Answer 2

自动生成绑定活动并从布局文件中获取名称，而不是活动类。

因此，如果您有一个名为BeautifulActivity的活动和名为sweet_layout.xml的相应布局，则生成的名称将为SweetLayoutBinding而不是BeautifulActivityBinding。

在MainActivity和activity_main.xml

之间混淆不要犯同样的错误

来源Android Developers

Answer 3

当我第一次遇到这个错误时，我创建了一个名为a.xml的布局，然后我创建了一个这样的活动

public class ABinding extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ABinding binding = DataBindingUtil.setContentView(this, R.layout.a);
    }

}

发生此错误。最后我发现Class ABinding是在/ build中自动生成的，所以名为ABinding的活动将覆盖自动生成的类

所以我重命名活动，错误消失

Answer 4

添加这是您的build.gradle（Module：app）文件

android {

dataBinding {
    enabled true
}

}

Answer 5

Go to layout "main_activity.xml"
Click right -> Refactor -> Rename
Rename the layout to "main_activity_new.xml" or anything you want
Again rename it to normal "main_activity.xml"

对我来说固定了！

Answer 6

将此添加到build.gradle

   android{
 ....
    dataBinding 
      { 
     enabled = true
       }
...
    }

Answer 7

如果上述所有解决方案均无法解决，请转到您的 .gradle文件夹>缓存，然后删除所有名称以 transforms 开头的文件夹，即transforms-1＆转换2。这对我有用

Answer 8

Try This Work for sure...

  Step 1: Add this code in the build.gradle(Mobile:app)
           dataBinding {
                enabled = true
            }

        Example:
         buildTypes {
                release {
                    minifyEnabled false
                    proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
                }
            }

            **dataBinding {
                enabled = true
            }**
        }

        dependencies {
        implementation fileTree(dir: 'libs', include: ['*.jar'])
            implementation 'com.android.support:appcompat-v7:28.0.0'
            implementation 'com.android.support.constraint:constraint-layout:1.1.3'
            testImplementation 'junit:junit:4.12'
        .....
        }

        Step 2:
        Binding Can be done with Name of the .xml file as below example..
        Simply name of the xml file and prefix with binding...

        Example 1:
        if of your .xml file is activity_main.xml then Binding file should be MainActivityBinding
        Example 2:
        if of your .xml file is android_sunil.xml then Binding file should be AndroidSunilBinding

    Step 3: Sample Code:

    public class BaseObservableActivity extends AppCompatActivity {

            private ActivityBaseobservableBinding activityMainBinding;
        @Override
        protected void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            activityMainBinding = DataBindingUtil.setContentView(this, R.layout.activity_baseobservable);

        }
    }

In the above code my .xml file name is activity_baseobservable so my binding class should be ActivityBaseobservableBinding activityMainBinding


--Happy Android Coding@Ambilpura

Answer 9

您应该使用 ActivityMainBinding 代替您的Activity类名。

ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_checklists);

DataBindingUtil.setContentView - 类型参数T具有不兼容的上限

9 个答案: