java - 如何在 fragment 之间导航？

Question

我是 Android Fragments 的新手。我有 2 个不同的 fragment ，想要使用按钮从一个 fragment 导航到另一个 fragment 。例如，在fragmentA中，当我按下按钮时，我会转到fragmentB和vise verse。

这是我的简单代码:

FragmentA.java

public class FragmentA extends Fragment {

    public FragmentA(){}

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

        View rootView = inflater.inflate(R.layout.fragment_a, container, false);

        return rootView;
    }

}

fragmenta.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="670dp"
    android:gravity="top"
    android:orientation="vertical" >


    <TextView
        android:id="@+id/txtLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="15dp"
        android:text="Fragment 1"
        android:textStyle="bold"
        android:textSize="22dp" />
</LinearLayout>

FragmentB.java

public class FragmentB extends Fragment {

    public FragmentB(){}

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

        View rootView = inflater.inflate(R.layout.fragment_b, container, false);

        return rootView;
    }

}

fragmentb.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="670dp"
    android:gravity="top"
    android:orientation="vertical" >


    <TextView
        android:id="@+id/txtLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="15dp"
        android:text="Fragment 2"
        android:textStyle="bold"
        android:textSize="22dp" />
</LinearLayout>

我需要按钮的代码(java 和 xml)。从头开始的帮助将不胜感激。提前致谢!!

Answer 1

检查这个Tutorial和以下代码供引用

Fragment1.java

    public class Fragment1 extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment1, container, false);
    }

    public void onClick(View view) {
        Fragment2 fragment2 = new Fragment2();
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.fragment1, fragment2);
        fragmentTransaction.commit();
    }

    }

Fragment2.java

public class Fragment2 extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment2, container, false);  
        }
}