记录:
一、有些时候我么需要对activty进行管理,比如,退出程序后,关闭所有activty,就有了专门的集合类对所有的活动进行管理,代码如下:、
public class ActivityCollector {
public static List<activity> activities = new ArrayList<>();
public static void addActivity(Activity activity) {
activities.add(activity);
}
public static void removeActivity(Activity activity){
activities.remove(activity);
}
public static void finishAll(){
for(Activity activity:activities){
// 活动未结束的就要将其销毁
if(!activity.isFinishing()) {
activity.finish();
}
}
activities.clear();
}
}
杀死程序的进程:
android.os.Process.killProcess(android.os.Process.myPid());
二、AppManager类管理Activity和App
1、添加与调用:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 添加Activity到堆栈
AppManager.getAppManager().addActivity(this);
}
@Override
protected void onDestroy() {
super.onDestroy();
// 结束Activity&从堆栈中移除
AppManager.getAppManager().finishActivity(this);
}
2、管理类
package net.oschina.app;
import java.util.Stack;
import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;
/**
* 应用程序Activity管理类:用于Activity管理和应用程序退出
*/
public class AppManager {
private static Stack<Activity> activityStack;
private static AppManager instance;
private AppManager(){}
/**
* 单一实例
*/
public static AppManager getAppManager(){
if(instance==null){
instance=new AppManager();
}
return instance;
}
/**
* 添加Activity到堆栈
*/
public void addActivity(Activity activity){
if(activityStack==null){
activityStack=new Stack<Activity>();
}
activityStack.add(activity);
}
/**
* 获取当前Activity(堆栈中最后一个压入的)
*/
public Activity currentActivity(){
Activity activity=activityStack.lastElement();
return activity;
}
/**
* 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
*/
public void finishActivity(Activity activity){
if(activity!=null){
activityStack.remove(activity);
activity.finish();
activity=null;
}
}
/**
* 结束指定类名的Activity
*/
public void finishActivity(Class<?> cls){
for (Activity activity : activityStack) {
if(activity.getClass().equals(cls) ){
finishActivity(activity);
}
}
}
/**
* 结束所有Activity
*/
public void finishAllActivity(){
for (int i = 0, size = activityStack.size(); i < size; i++){
if (null != activityStack.get(i)){
activityStack.get(i).finish();
}
}
activityStack.clear();
}
/**
* 退出应用程序
*/
public void AppExit(Context context) {
try {
finishAllActivity();
ActivityManager activityMgr= (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
activityMgr.restartPackage(context.getPackageName());
System.exit(0);
} catch (Exception e) { }
}
}
-END