記錄acticity的啓動記錄,用於退出程序時,關閉所有acticity
單純 mark 一下,下次直接用:
import android.app.Activity;
import java.util.ArrayList;
import java.util.List;
/**
* @author CGG
* activity管理類
* Created by USER on 2019/1/16.
*/
public class ActivityManager {
private static ActivityManager mInstance;
private List<Activity> mList;
private ActivityManager() {
}
public static ActivityManager getInstance() {
if (null == mInstance) {
synchronized (ActivityManager.class) {
if (null == mInstance) {
mInstance = new ActivityManager();
}
}
}
return mInstance;
}
/**
* 增加
* @param activity
*/
public void add(Activity activity) {
if (null == activity) {
return;
}
if (null == mList) {
mList = new ArrayList<Activity>();
}
mList.add(activity);
}
/**
* 刪除
* @param activity
*/
public void remove(Activity activity) {
if (null == activity) {
return;
}
if (null == mList) {
return;
}
mList.remove(activity);
}
/**
* 清除所有
*/
public void clear() {
if (null == mList) {
return;
}
for (Activity activity : mList) {
if (!activity.isFinishing()){
activity.finish();
}
}
mList.clear();
}
/**
* 獲取長度
* @return
*/
public int size() {
if (null == mList) {
return 0;
}
return mList.size();
}
/**
* 獲取指定位置activity
* @param position
* @return
*/
public Activity get(int position) {
if (null == mList) {
return null;
}
if (position > mList.size()){
return null;
}
return mList.get(position);
}
}