Question

这是MainActicity：

package com.example.a10648.demo;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Button;
import android.widget.Toast;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;

public class MainActivity extends AppCompatActivity {


@BindView(R.id.button)
Button button;

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

@OnClick(R.id.button)
public void onClick() {
    Toast.makeText(MainActivity.this,"ok",Toast.LENGTH_SHORT).show();
}
}

这是xml文件：

<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="com.example.a10648.demo.MainActivity">

<Button
    android:id="@+id/button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Button!" />

</RelativeLayout>

我有编译＆＃39; com.jakewharton：butterknife：8.0.1＆＃39;
这是app中的build.gradle

apply plugin: 'com.android.application'

android {
compileSdkVersion 23
buildToolsVersion "23.0.3"

defaultConfig {
    applicationId "com.example.a10648.demo"
    minSdkVersion 18
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.jakewharton:butterknife:8.0.1'
 }

onClick in bufferknife的方法不起作用，当我点击按钮时，没有Toast出现？我不知道为什么会这样发生？

Answer 1

请确保您的项目级别build.gradle如下：

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

特别注意这一行代码。不要忽视!!!

 classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'

然后，查看你的app / build.gradle

apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"

defaultConfig {
    applicationId "com.example.a10648.demo"
    minSdkVersion 18
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.jakewharton:butterknife:8.0.1'
apt 'com.jakewharton:butterknife-compiler:8.0.1'
}

特别注意三行代码。不要忽视!!!

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

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

然后，一切都好！我非常高兴！谢谢你一飘飘舟这是他在CSDN的个人页面。

http://blog.csdn.net/jdsjlzx/article/details/51354433

Answer 2

看起来你应该也包括ButterKnife编译器：

var canvas = new fabric.Canvas("c");
var clipboard = null;

function Copy() {
    // Single Object
    if(canvas.getActiveObject()) {
        // Does this object require an async clone?
        if(!fabric.util.getKlass(canvas.getActiveObject().type).async) {
            clipboard = canvas.getActiveObject().clone();
        } else {
            canvas.getActiveObject().clone(function(clone) {
                clipboard= clone;
            });
        }
    }

    // Group of Objects (all groups require async clone)
    if(canvas.getActiveGroup()) {
        canvas.getActiveGroup().clone(function(clone) {
            clipboard = clone;
        });
    }
}


function Paste() {
    // Do we have an object in our clipboard?
    if(clipboard) {
        // Lets see if we need to clone async 
        if(!fabric.util.getKlass(clipboard.type).async) {
            var obj = clipboard.clone();
            obj.setTop(obj.top += 10);
            obj.setLeft(obj.left += 10);            
            canvas.add(obj);
            // We do not need to clone async, all groups require async clone
            canvas.setActiveObject(obj);
            clipboard = obj;
        }  else {
            clipboard.clone(function(clone) {
                clone.setTop(clone.top += 10);
                clone.setLeft(clone.left += 10);
                canvas.add(clone);

                // We need to clone async, but this doesnt mean its a group
                if(clipboard.isType("group")) {
                    canvas.setActiveGroup(clone);
                } else {
                    canvas.setActiveObject(clone);
                }
                clipboard = clone;
            });
        }
    }
}

Answer 3

如果您阅读自述文件，则可以看到 - ＆gt;

配置项目级build.gradle以包含'android-apt'插件：

echo $_GET["data"];

所以build.gradle：

classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'

然后，在模块级build.gradle中应用'android-apt'插件并添加Butter Knife依赖项：

 buildscript {
        repositories {
            mavenCentral()
        }
        dependencies {
            classpath 'com.android.tools.build:gradle:2.2.2'
            classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        }
    }

    allprojects {
        repositories {
            jcenter()
        }
    }

    task clean(type: Delete) {
        delete rootProject.buildDir
    }

所以你的build.gradle

apply plugin: 'android-apt'

android {
  ...
}

dependencies {
  compile 'com.jakewharton:butterknife:8.4.0'
  apt 'com.jakewharton:butterknife-compiler:8.4.0'
}

方法＆＃34; onClick＆＃34;在butterknife不工作？

3 个答案: