android中的ButterKnife问题

我正在将

butterknife

与

改装一起使用。当我使用网络调用连续加载片段时，我的片段在视图上的空指针下崩溃。我已经在片段中实现了解除绑定

使用
findviewbyid
执行相同操作时，我没有遇到错误。Iam使用MVP

Unbinder unbinder;
@BindView(R.id.swipe_refresh_layout)
SwipeRefreshLayout swipeRefreshLayout;

@BindView(R.id.recycler_view_shop)
RecyclerView recyclerView;

@BindView(R.id.ll_content)
LinearLayout layoutContent;

@BindView(R.id.ll_no_data)
LinearLayout layoutNoData;

@BindView(R.id.tv_category_heading)
TextView categoryHeading;

private HomeActivity activity;
private ProgressDialog progressDialog;
DrListFragmentPresenter presenter;


public DrListFragment() {
    // Required empty public constructor
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View rootView = inflater.inflate(R.layout.fragment_dr, container, false);
    // bind view using butter knife
    unbinder = ButterKnife.bind(this, rootView);

    LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setItemAnimator(new DefaultItemAnimator());
    recyclerView.addItemDecoration(new DividerItemDecoration(getFragment().getActivity(),DividerItemDecoration.VERTICAL));

    activity = (HomeActivity) getActivity();

    presenter = new DrListFragmentPresenterImpl(this);
    return rootView;
}

@Override
public Fragment getFragment() {
    return this;
}


@Override
public void setCategoriesDetailsAdapter(CategoryWiseItemListingAdapter adapter) {
    recyclerView.setAdapter(adapter);
}





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

    // unbind the view to free some memory
    unbinder.unbind();
}    

}

检查
项目梯度

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

检查
appgradle

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

在版本
8.8.1
您可以在
app gradle

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

并将其添加到
项目gradle

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

你可以查一下


检查
项目梯度

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

检查
appgradle

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

在版本
8.8.1
您可以在
app gradle

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

并将其添加到
项目gradle

dependencies {
    classpath 'com.android.tools.build:gradle:2.3.3'
    // add this in your code
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'  
}

apply plugin: 'com.android.application'
apply plugin: 'android-apt'  // add this 

...
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.jakewharton:butterknife:8.6.0'
    // add this 
    apt 'com.jakewharton:butterknife-compiler:8.6.0
}

apply plugin: 'com.android.library'
apply plugin: 'com.jakewharton.butterknife'
...
dependencies {
     compile 'com.jakewharton:butterknife:8.8.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
    }
}

你可以查一下


我对以下场景也有同样的问题：

开放片段A
打开片段B（快速，在输入数据之前
片段A（出现）
重新打开片段A
当第一次打开片段A时，Regent调用API，在调用完成之前，移动到片段B，然后片段A将被调用
onDestroyView
。在这种方法中，butterknife是
未绑定的
。当返回到片段A时，将调用来自API的响应过程，现在该组件为null，因为它已取消绑定

解决方案：使用
call.cancel（）

我对以下场景也有同样的问题：

开放片段A
打开片段B（快速，在输入数据之前
片段A（出现）
重新打开片段A
当第一次打开片段A时，Regent调用API，在调用完成之前，移动到片段B，然后片段A将被调用
onDestroyView
。在这种方法中，butterknife是
未绑定的
。当返回到片段A时，将调用来自API的响应过程，现在该组件为null，因为它已取消绑定

解决方案：使用
call.cancel（）

你能把毕业证书寄出去吗？和错误日志给出适配器的完整代码。在该片段中添加错误日志i am get null pointer exception of basic vie。现在我在滑动刷新布局上得到空指针。如果我和findviewbyId绑定它的工作技巧，你能发布你的毕业证书吗？和错误日志给出适配器的完整代码。在该片段中添加错误日志i am get null pointer exception of basic vie。现在我在滑动刷新布局上得到空指针。如果我将vie与findviewbyId绑定，则无需将apt“com…”添加到gradle文件中。检查。谢谢你的回答。但在我的代码中，我添加了这个，效果很好。在新版本中，它将添加另一个。是的，可能你使用的是butterknife的旧版本。没有必要将apt“com…”添加到gradle文件中。检查。谢谢你的回答。但在我的代码中，我添加了这个，效果很好。在新版本中，它将添加另一个。是的，可能你使用的是旧版本的butterknife。