发现了一个好玩又好用的库androidannotations。
用处：简化代码，减少累赘的 findViewById，setViewContent，setOnClickListen。简单方便的线程模型。
@EActivity(R.layout.translate) // Sets content view to R.layout.translate
public class TranslateActivity extends Activity {
@ViewById // Injects R.id.textInput
EditText textInput;
@ViewById(R.id.myTextView) // Injects R.id.myTextView
TextView result;
@AnimationRes // Injects android.R.anim.fade_in
Animation fadeIn;
@Click // When R.id.doTranslate button is clicked
void doTranslate() {
translateInBackground(textInput.getText().toString());
}
@Background // Executed in a background thread
void translateInBackground(String textToTranslate) {
String translatedText = callGoogleTranslate(textToTranslate);
showResult(translatedText);
}
@UiThread // Executed in the ui thread
void showResult(String translatedText) {
result.setText(translatedText);
result.startAnimation(fadeIn);
}
// [...]
}
原理：生成了子类TranslateActivity_，所以AndroidManifest.xml文件里面要写成android:name="com.my.temp3.app.MainActivity_"。
使用：我是在Android Studio里面集成，照着这个blog的做法，分分钟集成完毕。用中文总结一下就是：
1.在app/build.gradle添加下面的代码，并sync
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.neenbedankt.gradle.plugins:android-apt:1.2+'
}
}
apply plugin: 'android'
apply plugin: 'android-apt'
android {
compileSdkVersion 19
buildToolsVersion "19.0.1"
defaultConfig {
minSdkVersion 8
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
apt {
arguments {
androidManifestFile variant.processResources.manifestFile
resourcePackageName "com.example.package.name"
}
}
dependencies {
apt "org.androidannotations:androidannotations:3.0+"
compile "org.androidannotations:androidannotations-api:3.0+"
compile 'com.android.support:appcompat-v7:+'
compile fileTree(dir: 'libs', include: ['*.jar'])
}
2.修改AndroidManifest.xml
<activity
android:name=".MainActivity_" // 原来的Activity类加上下划线
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>