如何 在多层acitivity中实现跳转并finish()之前所有的Activity

核心代码： ((MyApplication)getApplication()).getActivityManager().gotoHomeInquireActivity();
 

 

实现代码：自己写一个ActivitManager

public class ActivityManager {  private ArrayList<Activity> mActivityArray = new ArrayList<Activity>(); private Map<String, Integer> mActivityMap = new Hashtable<String, Integer>();  public static void addActivity(ActivityManager actManager,String name, Activity act) {  actManager.addActivity(name, act); }  public void addActivity(String name, Activity act) {  int nCount = mActivityArray.size();  mActivityArray.add(act);  mActivityMap.put(name, nCount); }  public static void removeActivity(ActivityManager actManager,String name, Activity act) {  actManager.removeActivity(name, act); }  public void removeActivity(String name, Activity act) {  Integer nIndex = mActivityMap.get(name);  if (null == nIndex)   return;  int nCount = mActivityArray.size();  if (nIndex >= nCount) {   for (int i = nCount - 1; i >= 0; i--) {    Activity activity = mActivityArray.get(i);    if (activity == act) {     mActivityMap.remove(name);     mActivityArray.remove(act);     break;    }   }  } else {   if (nIndex < nCount) {    if (act == mActivityArray.get(nIndex)) {     mActivityArray.remove(nIndex);     mActivityMap.remove(name);    } else {     mActivityArray.remove(act);    }   } else {    mActivityArray.remove(act);   }  } }  public static void killMyProcess(ActivityManager actManager) {  actManager.killMyProcess(); }  public void killMyProcess() {  int nCount = mActivityArray.size();        for (int i = nCount - 1; i >= 0; i--) {         Activity activity = mActivityArray.get(i);         activity.finish();        }        mActivityArray.clear();        mActivityMap.clear();  android.os.Process.killProcess(android.os.Process.myPid()); }  public void gotoHome1InquireActivity() {  int nCount = mActivityArray.size();        for (int i = nCount - 1; i >= 0; i--) {         Activity activity = mActivityArray.get(i);         if(! ( activity instanceof Home1InquireActivity ) ){          activity.finish();          mActivityArray.remove(i);          if(mActivityMap.containsValue(i)){           for (Map.Entry<String, Integer> entry : mActivityMap.entrySet()) {                     if(entry.getValue() == i){                      mActivityMap.remove(entry.getKey());                      break;                     }                 }          }         }else{          break;         }                 }        }  public void gotoHome2InquireActivity() {  int nCount = mActivityArray.size();        for (int i = nCount - 1; i >= 0; i--) {         Activity activity = mActivityArray.get(i);         if(! ( activity instanceof Home2InquireActivity ) ){          activity.finish();          mActivityArray.remove(i);          if(mActivityMap.containsValue(i)){           for (Map.Entry<String, Integer> entry : mActivityMap.entrySet()) {                     if(entry.getValue() == i){                      mActivityMap.remove(entry.getKey());                      break;                     }                 }          }         }else{          break;         }                 }        }}

如果进入一个Activity 就finish()上一个Activity,只要home那一页向新的Activity调转时，不要finish()homeActivity，android栈就会保存着那个home Activity, 所以在后面任意一个activity 不要startActivity(),直接finish（）,就可以直接回到homeActivity.

 

另外一种高级点的方法就是上面讲的，相当于维护一个队列，拿着所有Activity的指引，删除所有的。。。