Butter Knife 控件绑定

最新推荐文章于 2019-11-09 19:16:03 发布

原创最新推荐文章于 2019-11-09 19:16:03 发布 · 300 阅读

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本文介绍Butter Knife库在Android应用中的配置与使用方法，包括Gradle配置、初始化流程、布局文件创建以及具体实现步骤。

1.导包及设置
将下方代码添加到对应的地方

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

apply plugin: 'com.jakewharton.butterknife'

mavenCentral()

 classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'

例子：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
        //控件绑定jar
        classpath 'com.jakewharton:butterknife-gradle-plugin:8.8.1'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

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

apply plugin: 'com.android.application'
//控件绑定
apply plugin: 'com.jakewharton.butterknife'

android {
    compileSdkVersion 25
    buildToolsVersion "26.0.1"
    defaultConfig {
        applicationId "com.imsjw"
        minSdkVersion 15
        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-v7:25.3.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    //butterknife(控件绑定)
    compile 'com.jakewharton:butterknife:8.8.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    //测试
    testCompile 'junit:junit:4.12'
}

2.初始化

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;

import butterknife.ButterKnife;

public abstract class BaseActivity extends AppCompatActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(getContentViewId());
        ButterKnife.bind(this);
    }

    public abstract int getContentViewId();

}

3.构建布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/testBtn"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="按钮" />

</LinearLayout>

4.使用

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.LinearLayoutManager;

import com.imsjw.R;
import com.imsjw.adpater.IndexNavAdpater;
import com.imsjw.base.BaseActivity;
import com.imsjw.entity.VideoWeb;
import com.superrecycleview.superlibrary.recycleview.SuperRecyclerView;

import java.util.ArrayList;
import java.util.List;

import butterknife.BindView;


public class MainActivity extends BaseActivity {

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

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public int getContentViewId() {
        return R.layout.index_activity;
    }


}