Android第三方注解框架Annotations详解

前言：目前比较流行的第三方注解框架要数butterknife和Annotations,两者各有千秋，但是我更加倾向于使用annotation。所以这篇主要讲解annotation。

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我认为annotation有以下两个缺点：
1. 每次添加新的activity绑定后，需要编译一次
2. 不可以抽取到基类中。而butterknife是可以的。所以更加butterknife简便，如下代码：

import android.app.Activity;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.view.Window;import com.lenovohit.administrator.tyut.app.AppManager;import com.lenovohit.administrator.tyut.receiver.NetStateReceiver;import com.lenovohit.administrator.tyut.receiver.Observer;import butterknife.ButterKnife;/** * Created by Administrator on 2017/2/21. */public abstract class BaseActivity extends FragmentActivity implements Observer{    public static Activity currentActivity;    private NetStateReceiver receiver;    private AppManager appManager;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setTheme(android.R.style.Theme_Light_NoTitleBar);        currentActivity=this;        appManager = AppManager.getAppManager();        appManager.addActivity(this);        initView();        initDate();        initEvent();    }    @Override    public void setContentView(int layoutResID) {        super.setContentView(layoutResID);        ButterKnife.bind(this);    }    public abstract void initView();    public abstract void initDate();    public abstract void initEvent();}