Zane'Blog

Android Butterknife 8.4.0 使用方法总结

发表于 | 分类于 | | 阅读次数

慢慢来，比较快

前言

ButterKnife简介

ButterKnife是一个专注于Android系统的View注入框架，可以减少大量的findViewById以及setOnClickListener代码，可视化一键生成。

ButterKnife优势

1、强大的View绑定和Click事件处理功能，简化代码，提升开发效率；

2、方便的处理Adapter里的ViewHolder绑定问题；

3、运行时不会影响APP效率，使用配置方便；

4、代码清晰，可读性强。

如何添加依赖

1、在项目的project的build.gredle文件中的dependencies标签下添加：

classpath ‘com.neenbedankt.gradle.plugins:android-apt:1.8’

例如：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
buildscript {
    repositories {
        jcenter()
    }
    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
}

2、在module的build.gredle文件中添加：

apply plugin: ‘android-apt’

3、在module的build.gredle文件中的dependencies标签中添加：

compile ‘com.jakewharton:butterknife:8.4.0’

apt ‘com.jakewharton:butterknife-compiler:8.4.0’

例如：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
apply plugin: 'com.android.application'
apply plugin: 'android-apt'
android {
    compileSdkVersion 24
    buildToolsVersion "24.0.3"
    defaultConfig {
        applicationId "com.zyj.wifi"
        minSdkVersion 14
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    
    compile 'com.jakewharton:butterknife:8.4.0'
    apt 'com.jakewharton:butterknife-compiler:8.4.0'
}

如何使用

1、控件id注解：@BindView()

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
package io.github.zanelove.butterknifedev;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import butterknife.BindView;
import butterknife.ButterKnife;
public class ButterknifeActivity extends AppCompatActivity {
    @BindView( R.id.button1 )
    public Button button1 ;
    
    // 注意：button 的修饰类型不能是：private 或者 static 。 否则会报错：错误: @BindView fields must not be private or static. (io.github.zanelove.butterknifedev.ButterknifeActivity.button1)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_butterknife);
        //绑定activity
        ButterKnife.bind(this) ;
        button1.setText( "I am a button ");
    }
}

2、多个控件id注解：@BindViews()

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
package io.github.zanelove.butterknifedev;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import java.util.List;
import butterknife.BindViews;
import butterknife.ButterKnife;
public class Main2Activity extends AppCompatActivity {
    @BindViews({ R.id.button1, R.id.button2, R.id.button3 })
    public List<Button> buttonList ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        ButterKnife.bind(this);
        buttonList.get( 0 ).setText( "hello 1 ");
        buttonList.get( 1 ).setText( "hello 2 ");
        buttonList.get( 2 ).setText( "hello 3 ");
    }
}

3、fragment使用

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
package io.github.zanelove.butterknifedev;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import butterknife.BindView;
import butterknife.ButterKnife;
public class ButterknifeFragment extends Fragment {
    @BindView(R.id.button1)
    public Button button1 ;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_butterknife, container, false);
        //绑定fragment
        ButterKnife.bind(this, view) ;
        button1.setText( "I am a button");
        return view ;
    }
}

4、@BindString()：绑定string字符串

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
package io.github.zanelove.butterknifedev;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Button;
import butterknife.BindString;
import butterknife.BindView;
import butterknife.ButterKnife;
public class ButterknifeActivity extends AppCompatActivity {
    @BindView(R.id.button1) //绑定button 控件
    public Button button1 ;
    @BindString(R.string.app_name)  //绑定string 字符串
    String meg;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_butterknife);
        //绑定activity
        ButterKnife.bind( this ) ;
        button1.setText( meg );
    }
}

5、@BindArray()：绑定string里面array数组

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
<resources>
    <string name="app_name">WiFi管家</string>
    
    <string-array name="city">
        <item>厦门市</item>
        <item>福州市</item>
        <item>泉州市</item>
        <item>漳州市</item>
        <item>龙岩市</item>
    </string-array>
    
</resources>
package io.github.zanelove.butterknifedev;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Button;
import butterknife.BindArray;
import butterknife.BindView;
import butterknife.ButterKnife;
public class ButterknifeActivity extends AppCompatActivity {
    @BindView(R.id.button1) //绑定button 控件
    public Button button1 ;
    @BindArray(R.array.city)  //绑定string里面array数组
    String [] citys ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_butterknife);
        //绑定activity
        ButterKnife.bind( this ) ;
        button1.setText( citys[0] );
    }
}

6、@BindBitmap()：绑定Bitmap资源

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
package io.github.zanelove.butterknifedev;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;
import butterknife.BindBitmap;
import butterknife.BindView;
import butterknife.ButterKnife;
public class ButterknifeActivity extends AppCompatActivity {
    @BindView(R.id.imageView) //绑定ImageView 控件
    public ImageView imageView ;
    @BindBitmap(R.mipmap.wifi)  //绑定Bitmap 资源
    public Bitmap wifi_bitmap ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_butterknife);
        //绑定activity
        ButterKnife.bind( this ) ;
        imageView.setImageBitmap( wifi_bitmap );
    }
}

7、@BindColor()：绑定一个颜色值

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
package io.github.zanelove.butterknifedev;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Button;
import butterknife.BindColor;
import butterknife.BindView;
import butterknife.ButterKnife;
public class ButterknifeActivity extends AppCompatActivity {
    @BindView(R.id.button1)  //绑定一个控件
    public Button button1 ;
    @BindColor(R.color.colorAccent) int black ;  //绑定一个颜色值
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_butterknife);
        //绑定activity
        ButterKnife.bind(this) ;
        button1.setTextColor(black);
    }
}

8.1、@OnClick()：绑定控件点击事件

8.2、@OnLongClick()：绑定控件长按事件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
package io.github.zanelove.butterknifedev;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;
import butterknife.ButterKnife;
import butterknife.OnClick;
import butterknife.OnLongClick;
public class ButterknifeActivity extends AppCompatActivity {
    @OnClick(R.id.button1)   //给 button1 设置一个点击事件
    public void showToast(){
        Toast.makeText(this, "is a click", Toast.LENGTH_SHORT).show();
    }
    @OnLongClick(R.id.button1)    //给 button1 设置一个长按事件
    public boolean showToast2(){
        Toast.makeText(this, "is a long click", Toast.LENGTH_SHORT).show();
        return true;
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_butterknife);
        //绑定activity
        ButterKnife.bind(this) ;
    }
}

zelezny：Butterknife插件的使用

插件的安装

这里写图片描述

这里写图片描述

插件的使用

安装完成插件后，会提示重启AS，重启完后，可以写一个布局并且新建一个代码类测试下。测试的过程中要注意的是，需要将光标移到setContentView(R.layout.acty_login)，将光标放到R.layout.acty_login，然后右键Generate就有了。要注意一定要将光标放在R.layout.acty_login上面。

这里写图片描述

这里需要注意的是在勾选控件的界面上，有一个CreateViewHolder, 很明显这个是专门为ListView或者RecyclerView的适配器专门提供的。

坚持原创技术分享，您的支持将鼓励我继续创作！