package com.moral.andbrickslib.utils;
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import android.app.Activity;
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import android.content.Context;
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import android.text.TextUtils;
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import java.util.Iterator;
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import java.util.Stack;
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/**
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* Activity管理类
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* Created by hjzhang on 2016/3/15.
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*/
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public class ActivityManager {
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private static Stack<Activity> activityStack;
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private static ActivityManager instance;
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private ActivityManager() {
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}
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public static ActivityManager getActivityManager() {
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if(instance == null) {
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instance = new ActivityManager();
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}
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return instance;
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}
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/**
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* Activity进栈
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*/
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public void addActivity(Activity activity) {
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if(activityStack == null) {
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activityStack = new Stack();
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}
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activityStack.add(activity);
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}
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/**
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* 返回当前Activity
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*/
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public Activity currentActivity() {
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if(activityStack == null) {
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return null;
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} else {
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Activity activity = (Activity)activityStack.lastElement();
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return activity;
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}
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}
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/**
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* 退出当前Activity
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*/
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public void finishActivity() {
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if(activityStack != null) {
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Activity activity = (Activity)activityStack.lastElement();
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this.finishActivity(activity);
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}
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}
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/**
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* 根据activity实例退出
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* @param activity
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*/
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public void finishActivity(Activity activity) {
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if(activityStack != null) {
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if(activity != null) {
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activityStack.remove(activity);
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activity.finish();
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activity = null;
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}
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}
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}
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/**
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* 根据Activity名称退出
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* @param cls
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*/
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public void finishActivity(Class<?> cls) {
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if(activityStack != null) {
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Iterator iterator = activityStack.iterator();
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while(iterator.hasNext()) {
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Activity activity = (Activity)iterator.next();
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if(activity != null && activity.getClass().equals(cls)) {
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activity.finish();
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iterator.remove();
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}
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}
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}
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}
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public void finishAllActivity() {
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if(activityStack != null) {
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Iterator iterator = activityStack.iterator();
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while(iterator.hasNext()) {
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Activity activity = (Activity)iterator.next();
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if(activity != null && !activity.isFinishing()) {
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activity.finish();
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}
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}
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activityStack.clear();
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}
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}
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/**
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* 判断一个Activity 是否存在
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*
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* @param clz
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* @return
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*/
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public <T extends Activity> boolean isActivityExist(String clz) {
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boolean res;
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Activity activity = getActivity(clz);
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if (activity == null) {
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res = false;
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} else {
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if (activity.isFinishing()) {
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res = false;
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} else {
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res = true;
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}
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}
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return res;
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}
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public Activity getActivity(String activityName) {
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Iterator iterator = activityStack.iterator();
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Activity activity;
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do {
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if(!iterator.hasNext()) {
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return null;
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}
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activity = (Activity)iterator.next();
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} while(activity == null || !TextUtils.equals(activity.getClass().getName(), activityName));
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return activity;
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}
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/**
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* 退出app
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* @param context
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*/
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public void appExit(Context context) {
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try {
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this.finishAllActivity();
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} catch (Exception var3) {
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}
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}
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}
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