ButterKnife 8.0.1이 작동하지 않음

ButterKnife 8.0.1이 작동하지 않음

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를 사용 butterknife 8.0.1하고 있지만 nullpointerexception이 나타납니다.

이 줄은 내 build.grade 파일에 있습니다. compile 'com.jakewharton:butterknife:8.0.1'

이것은 내 Main Class:(내가 포함을 제대로 썼다)

import butterknife.BindView;
import butterknife.ButterKnife;

public class MainActivity extends BaseActivity {

    @BindView(R.id.MainScreenTextView) TextView mainText;

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

        ButterKnife.bind(this);

        **mainText.setText("Butter knife is working fine");**
    }

그리고 이것은 MainActivity.xml:

<android.support.design.widget.AppBarLayout
    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>

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

    <TextView
        android:id="@+id/MainScreenTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="This is the Main Screen"
        android:textColor="#000000"
        android:background="#666666"
        android:padding="5dp"
        android:textSize="20dp"/>
</LinearLayout>

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_margin="@dimen/fab_margin"
    android:src="@android:drawable/ic_dialog_email" />

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당 추가 정보 , 당신은을 포함 할 필요가 butterknife-compiler생성 된 코드가 자동으로 생성 될 위해서는 :

buildscript {
  repositories {
    mavenCentral()
   }
  dependencies {
    classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
  }
}

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

dependencies {
  compile 'com.jakewharton:butterknife:8.0.1'
  apt 'com.jakewharton:butterknife-compiler:8.0.1'
}

이것이 없으면로드 할 생성 된 코드가 없으므로 필드가 설정되지 않습니다.

Logcat을 호출 ButterKnife.setDebug(true)하고 검색 하여 ButterKnife가 작동하는지 확인할 수 있습니다 .

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이 라이브러리를 Fragment에서 사용했으며 NPE가 있습니다. 내 코드는 다음과 같습니다.

ButterKnife.bind(view);

그러나 그것은 잘못되었습니다. 라이브러리는 2 개의 객체를 알아야합니다.
1) 대상-@BindView 주석 포함
2) 소스-보기 포함

다음과 같이 작성하는 것이 옳습니다.

ButterKnife.bind(this, view);

이-당신의 조각,보기-이 조각의보기.

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App Level(build.gradle)

apply plugin: 'android-apt'
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'
    compile 'com.jakewharton:butterknife:8.4.0'
    apt 'com.jakewharton:butterknife-compiler:8.4.0'
}


Project Level(build.gradle)

buildscript {
    repositories {
        jcenter()
    }
    dependencies {

        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

---

for me the problem was that I was using

annotationProcessor 'com.jakewharton:butterknife-compiler:8.7.0'

instead of

 apt 'com.jakewharton:butterknife-compiler:8.7.0

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Config Butterknife on build.gradle file like this,

compile("com.jakewharton:butterknife:8.5.1")
annotationProcessor "com.jakewharton:butterknife-compiler:8.5.1"

It works for me.

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I had this issue too, just because I've added butterknife from Android Studio's Dependency management and not by copy-pasting gradle lines from Butterknife website. So I had to add compile 'com.jakewharton:butterknife:8.5.1' annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1' instead of just compile 'com.jakewharton:butterknife:8.5.1'

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If you use kotlin:

make sure to use this dependency in module app:

dependencies {
   implementation 'com.jakewharton:butterknife:10.0.0'
   kapt 'com.jakewharton:butterknife-compiler:10.0.0'
}

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From JakeWharton

Yes that plugin is no longer needed. You're already using annotationProcessor for the 'butterknife-compiler' artifact which is built-in to the Android Gradle plugin.

Then the solution is delete apt classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'

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I have just faced this problem, after updating my project to Gradle version 3.0.1. I was able to fix it by just including in Gradle app file the line:

annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'

The final result was:

    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:8.8.1'
        annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    }

I hope this helps somebody, although this question being old.

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Add annotationProcessor 'com.jakewharton:butterknife-compiler:8.6.0' In your gradle file it worked for me

참고URL : https://stackoverflow.com/questions/37013619/butterknife-8-0-1-not-working