业务逻辑复杂，突发奇想，记录一种管理 Activity任务栈的方式
..
从哪里来，就回到哪里去的业务需求
A1→B1→C→D; D回到 A1
A2→B2→C→D; D回到 A2
这种类似的业务逻辑，很多很多，每次做起来，都比较气死宝宝。。废话不多，直接上代码，有优化建议的，直接告诉我，谢谢
...
记录 一个 bug
当前页面 是 RechargeActivity 从 BuyActivity 直接到 RechargeActivity， 不可以利用Application管理事件，
手机的back finish 功能会带给 BuyActivity，导致 BuyActivity 也 跟着 finish
...
清除 activityName 之上 的 所有Activity， activityName 保留状态
<pre>
//以下代码，写在Application
private static List<Activity> listActivity;
public static App qianGuanApp;
@Override
public void onCreate() {
super.onCreate();
qianGuanApp = this;
listActivity = new ArrayList<Activity>();
}
public static App getQgApp(){
return qianGuanApp;
}
/\*\*
\* 清除 activityName 之上 的 所有Activity， activityName 保留状态
\* @param activityName Activity 的名字 Activity.getClass().getSimpleName()
\* \*/
public void clearActivityFrom(String activityName){
if((activityName == null) || (listActivity == null)|| (listActivity.size() <= 0)){
return ;
}
for (int i = (listActivity.size()-1); i>=0; i--){
if(!activityName.equals(listActivity.get(i).getClass().getSimpleName())){
listActivity.get(i).finish();
}else{
break;
}
}
}
private final class MyActivityLifecycleCallbacks extends SimpleActivityLifecycleCallbacks{
@Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState){
super.onActivityCreated(activity, savedInstanceState);
listActivity.add(activity);
}
@Override
public void onActivityDestroyed(Activity activity) {
super.onActivityDestroyed(activity);
activity.finish();
//LogUtil.e("即将移除 "+activity.getClass().getSimpleName());
listActivity.remove(activity);
/\*StringBuilder builder = new StringBuilder();
builder.append("站内剩余：");
for (int i = 0; i < listActivity.size(); i++){
builder.append(listActivity.get(i).getClass().getSimpleName()+" ");
}
LogUtil.e(builder.toString());\*/
activity = null;
}
}
package com.qiyuan.qianguan.callback;
import android.app.Activity;
import android.app.Application.ActivityLifecycleCallbacks;
import android.os.Bundle;
public abstract class SimpleActivityLifecycleCallbacks implements ActivityLifecycleCallbacks{
@Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState){
}
@Override
public void onActivityStarted(Activity activity){
}
@Override
public void onActivityResumed(Activity activity){
}
@Override
public void onActivityPaused(Activity activity)
{
}
@Override
public void onActivityStopped(Activity activity)
{
}
@Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState)
{
}
@Override
public void onActivityDestroyed(Activity activity)
{
}
}
</pre>
