我tryng导航从一个片段到另一个。这两个片段是100％的不同，有否 ViewPager 或类似的东西，将它们连接起来。这里是code。

I am tryng to navigate from one fragment to another. These 2 fragments are 100% different, there is no ViewPager or something like that to connect them. Here is the code.

fragment_view1.xml

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:id="@+id/firstView">

    <TextView
        android:id="@+id/viewOneText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="92dp"
        android:layout_marginTop="182dp"
        android:text="First View"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Button
        android:id="@+id/viewOneBtn"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/viewOneText"
        android:layout_below="@+id/viewOneText"
        android:layout_marginTop="17dp"
        android:text="Click Here" />

  <include layout = "@layout/drop_down"
            android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:layout_alignParentBottom="true"/>


   <FrameLayout
                android:id="@+id/fragment_view"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />
</RelativeLayout>

custom_view.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:id="@+id/customFragment" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="174dp"
        android:text="Custom Fragment"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

FirstView.java （使用fragment_view1.xml）

FirstView.java (uses fragment_view1.xml)

    package com.example.fragmenttest;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

public class FirstView extends DropDownMenu
{
    private TextView firstText;
    private Button btn;

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {


        View view = inflater.inflate(R.layout.fragment_view1,container,false);


        firstText = (TextView)view.findViewById(R.id.viewOneText);
        btn = (Button)view.findViewById(R.id.viewOneBtn);

        btn.setOnClickListener(new ButtonEvent());
        return view;

    }

    private class ButtonEvent implements OnClickListener
    {

        @Override
        public void onClick(View v)
        {
            // Create new fragment and transaction
            Fragment newFragment =  new CustomView();
            FragmentTransaction transaction = getFragmentManager().beginTransaction();

            // Replace whatever is in the fragment_container view with this fragment,
            // and add the transaction to the back stack
            transaction.replace(R.id.fragment_view, newFragment);
            transaction.addToBackStack(null);

            // Commit the transaction
            transaction.commit();
        }

    }


}

CustomView.java（使用custom_view.xml）

CustomView.java (uses custom_view.xml)

package com.example.fragmenttest;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

public class CustomView extends Fragment
{
    private TextView secondText;
    private Button secondViewBtn;

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {
        View view = inflater.inflate(R.layout.custom_view,container,false);

        return view;

    }


}

在 FirstView.java ，当我按一下按钮，我需要移动到片段 CustomView 。但是，而不是移动，它只是取代了的firstView 上方一切 CustomView 。下面的图片将更好地解释它。

In FirstView.java, when I click on the button, I need to move to the Fragment CustomView. But instead moving, it simply replaces everything in CustomView on top of FirstView. Below images will explain it better.

的firstView 单独的

CustomView 单独的

按钮打开时的firstView 点击的

为什么会发生这样？请帮忙

Why it is happening like this? Please help

推荐答案

正在试图取代的firstView 新片段，但的firstView 不是一个片段，它的'一个 RelativeLayout的。

You are trying to replace firstView with the new fragment, but firstView is not a fragment, its' a RelativeLayout.

您不能替换的布局文件静态定义的一个片段。您只能替换您通过动态添加一个片段 FragmentTransaction 。

You cannot replace a fragment defined statically in the layout file. You can only replace fragments that you added dynamically via a FragmentTransaction.

没有你的布局包含布局片段。

None of your Layout contains fragment in layout.

<fragment
        android:id="@+id/fragment1"
        android:layout_width="march_parent"
        android:layout_height="match_parent"></fragment>

一个新片段将取代现有的片段，这是previously添加到容器中。

A new Fragment will replace an existing Fragment that was previously added to the container.

您或许对这。