片段越来越重叠在后退按钮 [英] Fragments are getting overlapped on back button

问题描述

我已经创建了3个片段，即（碎裂，FragmentB，FragmentC）和一个MainActivity。 有一个在每个片段取代自己与下一个片段，直到FragmentC一个按钮。

I have created 3 Fragments namely (FragmentA, FragmentB, FragmentC) and one MainActivity. There is a button in each fragment which replaces itself with next Fragment till FragmentC.

我更换碎裂（含）FragmentB（然后）FragmentC。

I am replacing FragmentA (with) FragmentB (then with) FragmentC.

交易从碎裂到FragmentB使用以下功能

Transaction from FragmentA to FragmentB uses below function

    @Override
    public void fragmentreplacewithbackstack(Fragment fragment, String tag) {

        FragmentManager fragmentManager=getSupportFragmentManager();
        FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.contner,fragment , tag);
        fragmentTransaction.addToBackStack(null);
        fragmentTransaction.commit();   
//      fragmentManager.executePendingTransactions();

    }

交易从FragmentB到FragmentC使用以下功能

Transaction from FragmentB to FragmentC uses below function

public void fragmentreplace(Fragment fragment,String tag){
        FragmentManager fragmentManager=getSupportFragmentManager();
        FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.contner,fragment , tag);
        fragmentTransaction.commit();   

    }

问题是，当我preSS后退按钮从FragmentC，FragmentC和碎裂相互重叠。

problem is when i press back button from FragmentC, FragmentC and FragmentA overlap with each other.

推荐答案

您需要添加C片段，如果你想从这里去片段B背面preSS以backstack为好。

You need to add Fragment C to backstack as well if you wanna go to Fragment B on back press from here.

于是拨打下面的C片段为好。

So call the below for Fragment C as well.

 fragmentTransaction.addToBackStack(null);

编辑 - 改变你正在使用从B到C走这电流法，

EDIT - Change this current method you are using to go from B to C,

public void fragmentreplace(Fragment fragment,String tag){
    FragmentManager fragmentManager=getSupportFragmentManager();
    FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
    fragmentTransaction.replace(R.id.contner,fragment , tag);
    fragmentTransaction.addToBackStack(null); //this will add it to back stack
    fragmentTransaction.commit();   
}

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