ActivityManager堆栈式管理

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/**
 *
 * Activity管理类
 * Activity堆栈式管理
 *
 */
public class APPActivityManager {

	private static Stack<Activity> activityStack;
	private static APPActivityManager instance;

	private APPActivityManager() {
	}

	/**
	 * 实例化
	 * @return
	 */
	public static APPActivityManager getAppManager() {
		if (instance == null) {
			instance = new APPActivityManager();
		}
		return instance;
	}

	/**
	 * 添加到堆里
	 * @param activity
	 */
	public void addActivity(Activity activity) {
		if (activityStack == null) {
			activityStack = new Stack<Activity>();
		}
		activityStack.add(activity);
	}

	/**
	 * 获取当前的Activity
	 * @return
	 */
	public Activity currentActivity() {
		Activity activity = activityStack.lastElement();
		return activity;
	}

	/**
	 * 关闭当前Activity
	 */
	public void finishActivity() {
		Activity activity = activityStack.lastElement();
		finishActivity(activity);
	}

	/**
	 * 结束当前Activity
	 * @param activity
	 */
	public void finishActivity(Activity activity) {
		if (activity != null && !activity.isFinishing()) {
			activityStack.remove(activity);
			activity.finish();
			activity = null;
		}
	}

	/**
	 * 结束Activity
	 * @param cls
	 */
	public void finishActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				finishActivity(activity);
				break;
			}
		}
	}

	/**
	 * 结束所有的Activity
	 */
	public void finishAllActivity() {

		if (activityStack != null) {
        	int size = activityStack.size();
    		for (int i = 0; i < size; i++) {
    			Activity activity = activityStack.get(i);
    			if (null != activity && !activity.isFinishing()) {
    				activity.finish();
    			}
    		}
    		activityStack.clear();
        }
	}

	public void ZGLF(List<Class<?>> zglcls) {
		for (int j = 0; j < zglcls.size(); j++) {
			for (int i = 0, size = activityStack.size(); i < size; i++) {
				System.out.println("i:****" + i + "j:*****" + j);
				if (null != activityStack.get(i)
						&& activityStack.get(i).getClass()
								.equals(zglcls.get(j))) {
					finishActivity(activityStack.get(i));
					System.out.println(activityStack.get(i).toString());
					size = activityStack.size();
				}
			}
		}
		activityStack.clear();
	}

	/**
	 * 获取Activity
	 * @param cls
	 * @return
	 */
	public static Activity getActivity(Class<?> cls) {
		if (activityStack != null) {
			for (Activity activity : activityStack) {
				if (activity.getClass().equals(cls)) {
					return activity;
				}
			}
		}
		return null;
	}

	/**
	 * 退出应用程序
	 */
	public void AppExit(Context context) {
		try {
			finishAllActivity();
			android.os.Process.killProcess(android.os.Process.myPid());
			System.exit(0);
		} catch (Exception e) {
		}
	}

	/**
	 * Information you can retrieve about a particular task that is currently
	 * "running" in the system. Note that a running task does not mean the given
	 * task actually has a process it is actively running in; it simply means
	 * that the user has gone to it and never closed it, but currently the
	 * system may have killed its process and is only holding on to its last
	 * state in order to restart it when the user returns.
	 */
	public static class RunningTaskInfo implements Parcelable {
		/**
		 * A unique identifier for this task.
		 */
		public int id;

		/**
		 * The component launched as the first activity in the task. This can be
		 * considered the "application" of this task.
		 */
		public ComponentName baseActivity;

		/**
		 * The activity component at the top of the history stack of the task.
		 * This is what the user is currently doing.
		 */
		public ComponentName topActivity;

		/**
		 * Thumbnail representation of the task's current state. Currently
		 * always null.
		 */
		public Bitmap thumbnail;

		/**
		 * Description of the task's current state.
		 */
		public CharSequence description;

		/**
		 * Number of activities in this task.
		 */
		public int numActivities;

		/**
		 * Number of activities that are currently running (not stopped and
		 * persisted) in this task.
		 */
		public int numRunning;

		public RunningTaskInfo() {
		}

		public int describeContents() {
			return 0;
		}

		public void writeToParcel(Parcel dest, int flags) {
			dest.writeInt(id);
			ComponentName.writeToParcel(baseActivity, dest);
			ComponentName.writeToParcel(topActivity, dest);
			if (thumbnail != null) {
				dest.writeInt(1);
				thumbnail.writeToParcel(dest, 0);
			} else {
				dest.writeInt(0);
			}
			TextUtils.writeToParcel(description, dest,
					Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
			dest.writeInt(numActivities);
			dest.writeInt(numRunning);
		}

		public void readFromParcel(Parcel source) {
			id = source.readInt();
			baseActivity = ComponentName.readFromParcel(source);
			topActivity = ComponentName.readFromParcel(source);
			if (source.readInt() != 0) {
				thumbnail = Bitmap.CREATOR.createFromParcel(source);
			} else {
				thumbnail = null;
			}
			description = TextUtils.CHAR_SEQUENCE_CREATOR
					.createFromParcel(source);
			numActivities = source.readInt();
			numRunning = source.readInt();
		}

		public static final Creator<RunningTaskInfo> CREATOR = new Creator<RunningTaskInfo>() {
			public RunningTaskInfo createFromParcel(Parcel source) {
				return new RunningTaskInfo(source);
			}

			public RunningTaskInfo[] newArray(int size) {
				return new RunningTaskInfo[size];
			}
		};

		private RunningTaskInfo(Parcel source) {
			readFromParcel(source);
		}
	}

}