Android开发之Activity管理工具类完整示例

概述本文实例讲述了Android开发之Activity管理工具类。分享给大家供大家参考，具体如下：

本文实例讲述了AndroID开发之Activity管理工具类。分享给大家供大家参考，具体如下：

这个工具类是对Activity的一些管理，非常适用

package com.maobang.imsdk.util;import java.util.Stack;import androID.app.Activity;import androID.app.ActivityManager;import androID.content.Context;import androID.graphics.drawable.Drawable;import androID.vIEw.VIEw;import androID.vIEw.VIEwGroup;import androID.webkit.WebVIEw;import androID.Widget.ImageVIEw;import androID.Widget.ListVIEw;/** * Activity管理类 * Created by administrator on 2016/11/24. */public class ActivityPageManager {  private static Stack<Activity> activityStack;  private static ActivityPageManager instance;  /**   * constructor   */  private ActivityPageManager() {  }  /**   * get the AppManager instance,the AppManager is singleton.   */  public static ActivityPageManager getInstance() {    if (instance == null) {      instance = new ActivityPageManager();    }    return instance;  }  /**   * add Activity to Stack   */  public voID addActivity(Activity activity) {    if (activityStack == null) {      activityStack = new Stack<Activity>();    }    activityStack.add(activity);  }  /**   * remove Activity from Stack   */  public voID removeActivity(Activity activity) {    if (activityStack == null) {      activityStack = new Stack<Activity>();    }    activityStack.remove(activity);  }  /**   * get current activity from Stack   */  public Activity currentActivity() {    Activity activity = activityStack.lastElement();    return activity;  }  /**   * finish current activity from Stack   */  public voID finishActivity() {    Activity activity = activityStack.lastElement();    finishActivity(activity);  }  /**   * finish the Activity   */  public voID finishActivity(Activity activity) {    if (activity != null) {      activityStack.remove(activity);      activity.finish();      activity = null;    }  }  /**   * finish the Activity   */  public voID finishActivity(Class<?> cls) {    for (Activity activity : activityStack) {      if (activity.getClass().equals(cls)) {        finishActivity(activity);      }    }  }  /**   * finish all Activity   */  public voID finishAllActivity() {    if(activityStack!=null&&activityStack.size()>0)    {      for (int i = 0,size = activityStack.size(); i < size; i++) {        if (null != activityStack.get(i)) {          activityStack.get(i).finish();        }      }      activityStack.clear();    }  }  /**   * release all resourse for vIEw   * @param vIEw   */  public static voID unbindReferences(VIEw vIEw) {    try {      if (vIEw != null) {        vIEw.destroyDrawingCache();        unbindVIEwReferences(vIEw);        if (vIEw instanceof VIEwGroup){          unbindVIEwGroupReferences((VIEwGroup) vIEw);        }      }    } catch (Throwable e) {      // whatever exception is thrown just ignore it because a crash is      // always worse than this method not doing what it's supposed to do    }  }  private static voID unbindVIEwGroupReferences(VIEwGroup vIEwGroup) {    int nrOfChildren = vIEwGroup.getChildCount();    for (int i = 0; i < nrOfChildren; i++) {      VIEw vIEw = vIEwGroup.getChildAt(i);      unbindVIEwReferences(vIEw);      if (vIEw instanceof VIEwGroup)        unbindVIEwGroupReferences((VIEwGroup) vIEw);    }    try {      vIEwGroup.removeAllVIEws();    } catch (Throwable mayHappen) {      // AdapterVIEws,ListVIEws and potentially other VIEwGroups don't      // support the removeAllVIEws operation    }  }  @SuppressWarnings("deprecation")  private static voID unbindVIEwReferences(VIEw vIEw) {    // set all Listeners to null (not every vIEw and not every API level    // supports the methods)    try {      vIEw.setonClickListener(null);      vIEw.setonCreateContextMenuListener(null);      vIEw.setonFocuschangelistener(null);      vIEw.setonKeyListener(null);      vIEw.setonLongClickListener(null);      vIEw.setonClickListener(null);    } catch (Throwable mayHappen) {    }    // set background to null    Drawable d = vIEw.getBackground();    if (d != null){      d.setCallback(null);    }    if (vIEw instanceof ImageVIEw) {      ImageVIEw imageVIEw = (ImageVIEw) vIEw;      d = imageVIEw.getDrawable();      if (d != null){        d.setCallback(null);      }      imageVIEw.setimageDrawable(null);      imageVIEw.setBackgroundDrawable(null);    }    // destroy WebVIEw    if (vIEw instanceof WebVIEw) {      WebVIEw webvIEw = (WebVIEw) vIEw;      webvIEw.stopLoading();      webvIEw.clearFormData();      webvIEw.cleardisappearingChildren();      webvIEw.setWebChromeClIEnt(null);      webvIEw.setWebVIEwClIEnt(null);      webvIEw.destroyDrawingCache();      webvIEw.destroy();      webvIEw = null;    }    if (vIEw instanceof ListVIEw) {      ListVIEw ListVIEw = (ListVIEw) vIEw;      try {        ListVIEw.removeAllVIEwsInLayout();      } catch (Throwable mayHappen) {      }      ((ListVIEw) vIEw).destroyDrawingCache();    }  }  /**   * exit System   * @param context   */  public voID exit(Context context) {    exit(context,true);  }  /**   * exit System   * @param context   * @param isClearCache   */  @SuppressWarnings("deprecation")  public voID exit(Context context,boolean isClearCache) {    try {      finishAllActivity();      if(context != null){        ActivityManager activityMgr = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);        activityMgr.restartPackage(context.getPackagename());      }//      if(isClearCache){//        LruCacheManager.getInstance().evictAll();//        CacheManager.clearall();//      }      System.exit(0);      androID.os.Process.killProcess(androID.os.Process.myPID());    } catch (Exception e) {      e.printstacktrace();    }  }}

更多关于AndroID相关内容感兴趣的读者可查看本站专题：《Android编程之activity *** 作技巧总结》、《Android开发入门与进阶教程》、《Android视图View技巧总结》、《Android文件 *** 作技巧汇总》、《Android资源 *** 作技巧汇总》及《Android控件用法总结》

希望本文所述对大家AndroID程序设计有所帮助。

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