AndroidAnnotations用法总结

/**
*samy
*/
@EActivity(R.layout.activity_a20thirdparty_androidannotations_aamain)
// Sets content view to R.layout.translate
public class AAMainAct extends Activity {
	@ViewById
	// Injects R.id.textInput
	// 提供id来生成控件，如果不指定ID，默认以控件名进行查找，如上面的myEditText
	EditText myEditText;
	@ViewById(R.id.myTextView)
	// Injects R.id.myTextView
	TextView textView;
	@AnimationRes
	// Injects android.R.anim.fade_in
	Animation fadeIn;
	@StringRes(R.string.hello)
	String helloFormat;
	@ColorRes
	int androidColor;
	@BooleanRes
	boolean someBoolean;
	@SystemService
	NotificationManager notificationManager;
	@SystemService
	WindowManager windowManager;
//当View相关的成员变量初始化完毕后，会调用拥有@AfterViews注解的方法，你可以在里面初始化一些界面控件等。如果其他的成员变量处事完毕，就会调用@AfterInject。
	/**
	 * AndroidAnnotations gracefully handles support for onBackPressed, whether you use ECLAIR (2.0), or pre ECLAIR android version.
	 */
	public void onBackPressed() {
		super.onBackPressed();
		Toast.makeText(this, "Back key pressed!", Toast.LENGTH_SHORT).show();
	}
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		// windowManager should not be null
		windowManager.getDefaultDisplay();
		requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
	}
	// //事件控制，可以以按钮的id作为方法名,同时支持的事件还有onLongClick，onTextChange等
	// @LongClick
	// When R.id.myButtonClicked button is clicked
	// android:id="@+id/myButton"
	// 两种点击事件方法都可以的；myButton（） myButtonClicked（）
	@Click
	void myButton() {
		// void myButtonClicked() {
		String name = myEditText.getText().toString();
		setProgressBarIndeterminateVisibility(true);
		someBackgroundWork(name, 5);
	}
	/**
	 * 对于@Click，方法名和xml文件中的id一样就可以这样写，AndroidAnnotations会自动识别，对于
	 * 多个Button，可以写多个@Click，也可以在这样
	 */
	// @Click({R.id.button1,R.id.button2,R.id.button3})
	// void buttonClicked(Button bt){
	// switch(bt.getId()){
	// case R.id.button1: //
	// break;
	// ...
	// }
	// }
	@Background
	// Executed in a background thread
	// 开启新线程后台运行，注意不要引用UI控件,而且返回值类型一定是void
	void someBackgroundWork(String name, long timeToDoSomeLongComputation) {
		try {
			TimeUnit.SECONDS.sleep(timeToDoSomeLongComputation);
		}
		catch (InterruptedException e) {
		}
		String message = String.format(helloFormat, name);
		updateUi(message, androidColor);
		showNotificationsDelayed();
	}
	@UiThread
	// Executed in the ui thread//UI线程
	void updateUi(String message, int color) {
		setProgressBarIndeterminateVisibility(false);
		textView.setText(message);
		textView.setTextColor(color);
	}
	@UiThread(delay = 2000)
	// 可以设置延时时间，以毫秒为单位
	void showNotificationsDelayed() {
		Notification notification = new Notification(R.drawable.ic_launcher, "Hello !", 0);
		PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(), 0);
		notification.setLatestEventInfo(getApplicationContext(), "aa notification", "aa_test!", contentIntent);
		notificationManager.notify(1, notification);
	}
	// android:id="@+id/startExtraActivity"
	@LongClick
	void startExtraActivity() {
		// 这个传值有点不好弄
		Intent intent = AAWithExtraAct_.intent(this).myDate(new Date()).myMessage("hello !").classCastExceptionExtra("42").get();
//		Intent intent = ActivityWithExtra_.intent(this).myDate(new Date()).myMessage("hello !").get();
//		intent.putExtra(ActivityWithExtra_.MY_INT_EXTRA, 42);
		startActivity(intent);
	}
	@Click
	void startListActivity(View v) {
		startActivity(new Intent(this, AAListAct_.class));
	}
	@Touch
	void myTextView(MotionEvent event) {
		Toast.makeText(this, "myTextView was touched!: " , Toast.LENGTH_SHORT).show();
	}
	@Transactional
	int transactionalMethod(SQLiteDatabase db, int someParam) {
		return 42;
	}
}

Butter Knife也是使用注入视图的方式使开发人员尽可能少的编写代码。相比AndroidAnnotations，个人觉得没有AndroidAnnotations

使用简单，而且文档几乎也没有。还是先看一小段代码吧：

package com.example.butterknife;  
  
import android.app.Activity;  
import android.os.Bundle;  
import android.widget.Button;  
import android.widget.ListView;  
import android.widget.TextView;  
import android.widget.Toast;  
import butterknife.InjectView;  
import butterknife.OnClick;  
import butterknife.ButterKnife;  
import butterknife.OnItemClick;  
import butterknife.OnLongClick;  
  
import static android.widget.Toast.LENGTH_SHORT;  
  
public class SimpleActivity extends Activity {  
  @InjectView(R.id.title) TextView title;  
  @InjectView(R.id.subtitle) TextView subtitle;  
  @InjectView(R.id.hello) Button hello;  
  @InjectView(R.id.list_of_things) ListView listOfThings;  
  @InjectView(R.id.footer) TextView footer;  
  
  private SimpleAdapter adapter;  
  
  @OnClick(R.id.hello) void sayHello() {  
    Toast.makeText(this, "Hello, views!", LENGTH_SHORT).show();  
  }  
  
  @OnLongClick(R.id.hello) boolean sayGetOffMe() {  
    Toast.makeText(this, "Let go of me!", LENGTH_SHORT).show();  
    return true;  
  }  
  
  @Override protected void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.simple_activity);  
    ButterKnife.inject(this);  
  
    // Contrived code to use the "injected" views.  
    title.setText("Butter Knife");  
    subtitle.setText("View \"injection\" for Android.");  
    footer.setText("by Jake Wharton");  
    hello.setText("Say Hello");  
  }  
}  

总之，两者虽有相似的地方，但看到AndroidAnnotations之后，就不愿使用Butter Knife了。另外，值得你注意的是butter Knife

有个代码生成的插件呢，不过是针对Android Studio的,请看图：

(gif 的图为什么不会动啊)

public class MainActivity extends ActionBarActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Try to generate Activity injections by clicking to R.layout.activity_main
        setContentView(R.layout.activity_main);
        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.container, new Fragment())
                    .commit();
        }
    }
}