使用按钮和菜单项调用相同的片段（不在backStack中创建重复项）

Question

我正在创建一个具有抽屉一个MainActivity和多个片段的应用程序，其中一个片段将所有按钮保存到其他片段（不包括它的自我），这样既buttonsFragment和抽屉可以调用片段现在的问题是，即时通讯创建每个片段的两个副本，当我把它从抽屉中，当我把它从buttonsFragment

我的代码：

MainActivity（）

@SuppressWarnings("StatementWithEmptyBody") 
@Override 
public boolean onNavigationItemSelected(MenuItem item) { 
    // Handle navigation view item clicks here. 

    int id = item.getItemId(); 
    xFragment xFrag = new xfragment(); 

    if (id == R.id.menuItem1) { 

     FragmentManager manager = getSupportFragmentManager(); 
     android.support.v4.app.FragmentTransaction fM =  manager.beginTransaction(); 

     boolean moneyFragmentPoppedMenu = manager.popBackStackImmediate(xFragName,0); 




     if(!FragmentPoppedMenu){ 

      fM.replace(R.id.content_main, xfrag, mT); 
      fM.addToBackStack(mFragName); 
      fM.commit(); 
     } 

     else if (FragmentPoppedMenu){ 

     fM.replace(R.id.content_main, xfrag);} 


    } 

buttonsFragment（）

xFragButton.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      FragmentManager manager = getActivity().getSupportFragmentManager(); 

      android.support.v4.app.FragmentTransaction fM = manager.beginTransaction(); 
      boolean FragmentPoppedButton = manager.popBackStackImmediate(xFragName, 0); 


      if(!FragmentPoppedButton){ 
       fM.replace(R.id.content_main, xfrag); 
       fM.addToBackStack(xFragName); 
       fM.commit(); 
      } 

     else if (FragmentPoppedButton){ fM.replace(R.id.content_main, xfrag);} 

我发现了，因为当我从菜单中打开并输入一个EDITTEXT东西再从buttonsFragment打开它显示了一个明确的EDITTEXT然后当我从菜单中我所输入的再次打开仍然存在

Answer 1

@SuppressWarnings("StatementWithEmptyBody") 
@Override 
public boolean onNavigationItemSelected(MenuItem item) { 
// Handle navigation view item clicks here. 

int id = item.getItemId(); 
xFragment xFrag = new xfragment(); 

if (id == R.id.menuItem1) { 
     xFragButton.performClick(); 

} 

buttonsFragment：

onCreateView（）{

Button xFragButton = (Button) v.findViewById(R.id.Button1); 

xFragButton.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     FragmentManager manager = getSupportFragmentManager(); 
    android.support.v4.app.FragmentTransaction fM =  manager.beginTransaction(); 

    boolean moneyFragmentPoppedMenu = manager.popBackStackImmediate(xFragName,0); 




    if(!FragmentPoppedMenu){ 

     fM.replace(R.id.content_main, xfrag, mT); 
     fM.addToBackStack(mFragName); 
     fM.commit(); 
    } 

    else if (FragmentPoppedMenu){ 

    fM.replace(R.id.content_main, xfrag); 
    }