github地址:https://github.com/GarsonZhang/butterknife
Butter Knife
Field and method binding for Android views which uses annotation processing to generate boilerplate code for you.
- Eliminate
findViewById
calls by using@BindView
on fields. - Group multiple views in a list or array. Operate on all of them at once with actions, setters, or properties.
- Eliminate anonymous inner-classes for listeners by annotating methods with
@OnClick
and others. - Eliminate resource lookups by using resource annotations on fields.
class ExampleActivity extends Activity {
@BindView(R.id.user) EditText username;
@BindView(R.id.pass) EditText password;
@BindString(R.string.login_error) String loginErrorMessage;
@OnClick(R.id.submit) void submit() {
// TODO call server...
}
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.simple_activity);
ButterKnife.bind(this);
// TODO Use fields...
}
}
For documentation and additional information see the website.
Remember: A butter knife is like a dagger only infinitely less sharp.
Download
Add this to you project-level build.gradle
:
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
}
}
Add this to your module-level build.gradle
:
apply plugin: 'android-apt'
android {
...
}
dependencies {
compile 'com.jakewharton:butterknife:8.0.1'
apt 'com.jakewharton:butterknife-compiler:8.0.1'
}
Make sure the line apply plugin ...
is placed somewhere at the top of the file.
Snapshots of the development version are available in Sonatype's snapshots
repository.