android stutio使用注解式框架Butterknife教程

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打开build.gradle配制，输入如图下所示：

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

在activity里选择需要加载的xml文件，右健打开，如图下所示：

这里给控件取名

完成

代码如下所示：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#ffffff"    android:orientation="vertical">    <TextView        android:id="@+id/tv_name"        android:layout_width="match_parent"        android:layout_height="50dp"        android:textSize="30dp"        android:gravity="center"        android:textColor="@color/colorPrimaryDark"        android:text="Hello World!" />    <Button        android:id="@+id/btn_ok"        android:layout_width="match_parent"        android:layout_height="100dp"        android:textSize="46sp"        android:gravity="center"        android:textColor="@color/colorAccent"        android:text="中奖了"/>    <Button        android:id="@+id/btn_cancel"        android:layout_width="match_parent"        android:layout_height="100dp"        android:textSize="46sp"        android:gravity="center"        android:textColor="@color/colorAccent"        android:text="取消"/></LinearLayout>

package com.nnddkj.mytestdemo;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;import butterknife.BindView;import butterknife.ButterKnife;import butterknife.OnClick;public class MainActivity extends AppCompatActivity {    @BindView(R.id.tv_name)    TextView tvName;    @BindView(R.id.btn_ok)    Button btnOk;    @BindView(R.id.btn_cancel)    Button btnCancel;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.bind(this);        tvName.setText("张三");    }    @OnClick(R.id.btn_ok)    public void onOkclick() {        Toast.makeText(MainActivity.this,"中奖了",Toast.LENGTH_SHORT).show();    }}

apply plugin: 'com.android.application'android {    compileSdkVersion 25    buildToolsVersion "25.0.0"    defaultConfig {        applicationId "com.nnddkj.mytestdemo"        minSdkVersion 19        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-v7:25.0.1'    testCompile 'junit:junit:4.12'    compile 'com.jakewharton:butterknife:8.4.0'    annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'}

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