AppManager.java

/*
 * Copyright 2016. SHENQINCI(沈钦赐)<946736079@qq.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ren.qinc.markdowneditors;

import android.app.Activity;
import android.content.Context;

import com.umeng.analytics.MobclickAgent;

import java.util.Stack;

import ren.qinc.markdowneditors.base.BaseApplication;


/**
 * activity堆栈式管理 用户管理所有activity
 * Created by 沈钦赐 on 2015/12/20.
 */
public class AppManager {
    private static Stack<Activity> activityStack;
    private static AppManager instance;

    private AppManager() {
    }

    public static AppManager getAppManager() {
        if (instance == null) {
            instance = new AppManager();
        }
        return instance;
    }


    /**
     * 添加Activity到堆栈
     *
     * @param activity
     */
    public void addActivity(Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<Activity>();
        }
        activityStack.remove(activity);// 先移除掉已经存在的
        activityStack.add(activity);
    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity currentActivity() {
        if (activityStack == null) {
            return null;
        }
        Activity activity = activityStack.lastElement();
        return activity;
    }

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

    /**
     * 判断当前的界面的activity是否是cls
     *
     * @param cls 类名
     * @return
     */
    public boolean activityVisible(Class<?> cls) {
        if (activityStack == null) {
            return false;
        }
        Activity activity = activityStack.lastElement();
        if (activity.getClass().equals(cls)) {
            return true;
        }
        return false;
    }


    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

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

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


    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                finishActivity(activityStack.get(i));
                break;
            }
        }
        activityStack.clear();
    }

    /**
     * 移除activity
     *
     * @param activity activity实例
     * @return 移除出来的activity
     */
    public boolean removeActivity(Activity activity) {
        if (activity == null) {
            return false;
        }

        if (activityStack == null) {
            return false;
        }
        return activityStack.remove(activity);
    }


    /**
     * 退出应用程序
     *
     * @param context 上下文
     */
    public void AppExit(Context context) {
        try {
            MobclickAgent.onKillProcess(BaseApplication.context());
            finishAllActivity();
            // 杀死该应用进程
            android.os.Process.killProcess(android.os.Process.myPid());
            System.exit(0);
        } catch (Exception e) {
            MobclickAgent.reportError(BaseApplication.context(), e);
        }
    }

}