android中activity管理及界面传值

android中利用application类中的ActivityLifecycleCallbacks接口实现activity的管理及界面传值

简化界面跳转，和界面之间的传值和获取

使用方法：

MainActivity中
AContext.push(SecondActivity.class,
"SecondActivity");//跳转到SecondActivity中并传递一个字符串

String msg = AContext.getPushData();//
SecondActivity中获取数据

ThreeActivity中：

AContext.pull("2", 3);//关闭当前activity并传递两个参数，
在SecondActivity获取返回的数据

if (AContext.getPullData() !=
null) {
// 获取ThreeActivity返回的数据
String one = AContext.getPullData(0);
int
two = AContext.getPullData(1);
AContext.show("第一页传过来的值：" +one +
";" + two);
}

/**

 * activity管理类
 *
 */
publicclass ActivityManagerimplements
ActivityLifecycleCallbacks {

private Activity
activity;

private ArrayList<Activity>
activityList = new ArrayList<Activity>();

public ArrayList<Activity> getActivityList() {
returnactivityList;
}

public
void exitLogin() {
Iterator<Activity> iterator =activityList.iterator();
while (iterator.hasNext() &&activityList.size() != 1) {
iterator.next().finish();
iterator.remove();
}
}

public
void setActivity(Activityactivity) {
this.activity =activity;
}

public Activity getCurrentActivity() {
returnactivity;
}

/**
* 在activity创建时记录当前activity，并添加到集合中
*/
@Override
public
void onActivityCreated(Activityactivity, Bundle
savedInstanceState) {
Log.e("TAG","onActivityCreated");
setActivity(activity);
activityList.add(activity);
}

@Override
public
void onActivityStarted(Activityactivity) {
Log.e("TAG","onActivityStarted");
}

/**
* 在resume中进行更新当前的activity
*/
@Override
public
void onActivityResumed(Activityactivity) {
setActivity(activity);
Log.e("TAG","onActivityResumed");
}

@Override
public
void onActivityPaused(Activityactivity) {
Log.e("TAG","onActivityPaused");
}

@Override
public
void onActivityStopped(Activityactivity) {
Log.e("TAG","onActivityStopped");
}

@Override
public
void onActivitySaveInstanceState(Activityactivity, Bundle
outState) {
Log.e("TAG","onActivitySaveInstanceState");
}

/**
* 在activity销毁时移除
*/
@Override
public
void onActivityDestroyed(Activityactivity) {
Log.e("TAG","onActivityDestroyed");
activityList.remove(activity);
}

private Object[]
_pullData;

/**
* 获取回退前activity传递过来的参数
* 
* @param position
* @return
*/
public <T
extends Object> T getPullData(intposition) {
return isPullEmpty(position) ? (T)_pullData[position] :
null;
}

private
boolean isPullEmpty(intposition) {
return_pullData !=
null &&_pullData.length >
position;
}

/**
* 关闭activity并回传
* 
* @param data
*/
public
void pullCurrentAcivity(Object...data) {
_pullData =data;
_pushData =null;
activity.finish();
}

/**
* finish
*/
public
void pullActivity() {
pullCurrentAcivity();
}

/**
* push
*/
private Object[]
_pushData;

/**
* 利用索引获取跳转前界面传递的数据
* 
* @param position
* @return
*/
public <T
extends Object> T getPushData(intposition) {
return isPushEmpty(position) ? (T)_pushData[position] :
null;
}

private
boolean isPushEmpty(intposition) {
return_pushData !=
null &&_pushData.length >
position;
}

/**
* 跳转activity并传递参数
* 
* @param activityClass
* @param pushData
*/
public
void pushActivity(Class<?>activityClass, Object...
pushData) {
_pushData =pushData;
_pullData =null;
Intent intent =
new Intent(activity, activityClass);
activity.startActivity(intent);
}

          在AContext类中初始化ActivityManager并注册

        public
staticvoid init(Application
currentApplication) {

sApplication =currentApplication;
sActivityManager =new ActivityManager();
sApplication.registerActivityLifecycleCallbacks(sActivityManager);
}

通过application注册监听activity

public
class InitApplicationextends Application {
@Override
public
void onCreate() {
super.onCreate();
/**
* 初始化注册activity生命周期监听
*/
AContext.init(this);
}
}

最后在AndroidManifest.xml中注册application

csdn下载地址:http://download.csdn.net/detail/u010945409/9727455
github地址： https://github.com/xieyuhai/activity