ButterKnife onclick无效

Question

我使用butterknife库完美地注入了视图.但是当我尝试实现监听器时,例如onclick我无法实现它们.以下java代码将帮助您了解我的问题.

Java代码:

public class LoginActivity extends ActionBarActivity{
    @InjectView(R.id.toolbar) Toolbar toolbar;
    @InjectView(R.id.btn_login) Button login;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
        ButterKnife.inject(this);

        initialize();
        //initListeners();

        @OnClick(R.id.btn_login)
        public void submit(View view) {
          // TODO submit data to server...
        }
    }

    /*private void initListeners() {
        @OnClick(R.id.btn_login)
        public void login(){

        }
    }*/

    private void initialize() {
        setSupportActionBar(toolbar);
        getSupportActionBar().setIcon(R.drawable.toolbar_icon);
        getSupportActionBar().setTitle(null);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
    }
}

告诉我它为什么会这样.代码有什么问题吗？我已经使用以下URL配置了与ButterKnife兼容的IDE.

http://stackoverflow.com/questions/27754811/onclick-is-not-working-in-implementation-of-butterknife-library

请就此问题向我提出任何建议.提前致谢..

Answer 1

MainActivity.java

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import butterknife.ButterKnife;
import butterknife.InjectView;
import butterknife.OnClick;


public class MainActivity extends ActionBarActivity {


    @InjectView(R.id.button)
    Button login;

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


    }


    @OnClick(R.id.button)
    void submitButton(View view) {
            Toast.makeText(this, "Click", Toast.LENGTH_SHORT).show();
    }
}

和activity_main.xml部分

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">


    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="New Button"
        android:id="@+id/button"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginLeft="59dp"
        android:layout_marginStart="59dp"
        android:layout_marginTop="132dp"
        />
</RelativeLayout>

在build.gradle文件(app)中

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.0.0'
    compile 'com.jakewharton:butterknife:6.1.0'
}

Answer 2

就我而言,这是我的解决方案

在gradle中添加classpath(Project)

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
    }
}

和gradle(模块)添加apply和apt

apply plugin: 'com.neenbedankt.android-apt'
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'   
    compile 'com.jakewharton:butterknife:8.2.1'
    apt 'com.jakewharton:butterknife-compiler:8.2.1'
}

文件java

@OnClick(R.id.btn_login)
public void submit(View view) {
  // TODO submit data to server...
}

Answer 3

使用注解之前，您应该先绑定butterKnife。

将这些依赖项添加到gradle.build

compile 'com.jakewharton:butterknife:8.4.0' annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'

然后添加绑定到onCreate ButterKnife.bind(this);

现在对Button执行代码。该方法应该是公开的，并且在butterKnife中，您不需要在XML中添加onClick。并且方法也应该位于onCreate之外，它将自动获取按钮，该按钮是使用方法上方给出的注释分配的，

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

}
@OnClick(R.id.btn_login)
public void submit(View view){ 

   //Do your code here. 

}