PageManager.java
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package com.sunvote.xpadapp.activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import com.sunvote.xpadapp.R;
import com.sunvote.xpadapp.fragment.AdminFragment;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Elvis on 2017/11/30 15:07
* Email:Eluis@psunsky.com
* 版权所有：长沙中天电子设计开发有限公司
* Description: 人大通用版XPadAppRD重构
* 页面管理，当前显示页面控制
*/
public class PageManager {
private static volatile PageManager instance;
private FragmentManager fragmentManager ;
public static PageManager getInstance() {
if(instance == null){
synchronized (PageManager.class){
if(instance == null){
instance = new PageManager();
}
}
}
return instance;
}
private List<Fragment> fragmentList = new ArrayList<>();
private List<Fragment> currentStack = new ArrayList<>();
public boolean pop1(){
if(currentStack.size() > 0) {
FragmentTransaction tx = fragmentManager.beginTransaction();
tx.setCustomAnimations(android.R.animator.fade_in, android.R.animator.fade_out);
Fragment fragment = currentStack.get(currentStack.size()-1);
tx.remove(fragment);
tx.commitAllowingStateLoss();
currentStack.remove(fragment);
return true;
}
return false;
}
public void popStack(){
for(Fragment temp : currentStack){
FragmentTransaction tx = fragmentManager.beginTransaction();
tx.setCustomAnimations(android.R.animator.fade_in, android.R.animator.fade_out);
tx.remove(temp);
tx.commitAllowingStateLoss();
}
currentStack.clear();
}
public void setFragmentManager(FragmentManager fragmentManager) {
this.fragmentManager = fragmentManager;
}
public void showAdminFragment(){
FragmentTransaction transaction = fragmentManager.beginTransaction();
AdminFragment fAdmin = new AdminFragment();
currentStack.add(fAdmin);
transaction.add(R.id.frame_content, fAdmin, "admin");
transaction.addToBackStack(fAdmin.getClass().getName());
transaction.commit();
}
}