Question

我学习如何在我的android项目中使用dagger2和Butterknife，一切正常，直到我用Butterknife BindView注释注入视图，它显示错误就像这样;

错误：（5,57）错误：找不到符号类DaggerNetComponent

这是我的DaggerNetComponent代码：

public class App extends Application {

private NetComponent mNetComponent;

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

    mNetComponent = DaggerNetComponent.builder().appModule(new AppModule(this)).netModule(new NetModule("http://example.com/"))
            .build();
}

public NetComponent getNetComponent()
{
    return mNetComponent;
}

}

这就是我用butterknife注入视图的方式：

public class MainActivity extends AppCompatActivity implements MainScreenContact.View {

@BindView(R.id.listContact)
ListView listView;

ArrayList<CharSequence> list;
ArrayAdapter<CharSequence> adapter;

@Inject
MainScreenPresenter mainPresenter;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ButterKnife.bind(this);

如果我在这个类上删除BindView注释和ButterKnife绑定，那么它工作正常，但如果我使用它，则会出现错误。

这是我的Gradle.app

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'
apply plugin: 'android-apt'


android {
compileSdkVersion 25
buildToolsVersion "24.0.3"
defaultConfig {
    applicationId "com.project.echo.contactmanagement"
    minSdkVersion 14
    targetSdkVersion 25
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner      "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])

androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.0.0'

//Retrofit
compile 'com.squareup.retrofit2:retrofit:2.0.2'
//OkHttp
compile 'com.squareup.okhttp3:okhttp:3.2.0'
compile 'com.squareup.okio:okio:1.7.0'

//Gson
compile 'com.google.code.gson:gson:2.6.2'
compile 'com.squareup.retrofit2:converter-gson:2.0.1'

//RxJava
compile 'io.reactivex:rxjava:1.1.2'
compile 'io.reactivex:rxandroid:1.1.0'
compile 'com.squareup.retrofit2:adapter-rxjava:2.0.1'

testCompile 'junit:junit:4.12'

//Dagger
apt 'com.google.dagger:dagger-compiler:2.2'
compile 'com.google.dagger:dagger:2.2'
provided 'javax.annotation:jsr250-api:1.0'

//butterknife
compile 'com.jakewharton:butterknife:8.1.0'
apt 'com.jakewharton:butterknife-compiler:8.1.0'
}

请帮助我，任何答案都将不胜感激......

谢谢..

Answer 1

I was able to fix this by using the same annotation plugin for both dependencies:

// Butter Knife
compile 'com.jakewharton:butterknife:8.4.0'
apt 'com.jakewharton:butterknife-compiler:8.4.0'
// Dagger 2
apt 'com.google.dagger:dagger-compiler:2.8'
compile 'com.google.dagger:dagger:2.8'
provided 'javax.annotation:jsr250-api:1.0'

Came up with this fix after reading the following issue:

https://github.com/JakeWharton/butterknife/issues/803

Answer 2

我找到了解决方案，但我不认为这是完美的解决方案。我将butterknife版本从8.1.0更改为8.0.1，然后一切正常。我在gradle.app

中更改了它

//butterknife
compile 'com.jakewharton:butterknife:8.0.1'
apt 'com.jakewharton:butterknife-compiler:8.0.1'

Answer 3

使用apt范围时，您需要在build.gradle中将以下packagingOptions添加到android {：

android {
    // ...
    packagingOptions {
        // Exclude file to avoid
        // Error: Duplicate files during packaging of APK
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/ASL2.0'
        exclude 'META-INF/services/javax.annotation.processing.Processor'  // <-- that one
    }
}

我还认为你应该只申请android-apt一次。

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'
//apply plugin: 'android-apt'

但另一种可能性是你试图绑定一个在布局中不存在的视图，所以ButterKnife现在在编译时失败了。

Android Dagger2和Butterknife冲突

3 个答案: