我正在开发一个APP，但是我发现执行错误，当我点击按钮时尝试启动一个新片段时，我尝试修复它，但我不能。
我的目标是在单击按钮时打开一个新片段
SpaceFragment1.java
public class Space1Fragment extends Fragment{
private Button dss;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_space1, container, false);
dss = (Button) v.findViewById(R.id.dss);
dss.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(),"dss",Toast.LENGTH_LONG).show();
LogrosFragment fragment2 = new LogrosFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.dss, fragment2);
fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
});
return v;
}
}
fragment_space1
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
tools:context="com.tfm.miguel.planetaria.Fragments.Space1Fragment"
tools:layout_editor_absoluteY="25dp"
tools:layout_editor_absoluteX="0dp">
<Button
android:id="@+id/dessi"
android:visibility="gone"
android:layout_width="59dp"
android:layout_height="91dp"
android:src="@drawable/naranja"
android:clickable="true"
tools:ignore="MissingConstraints"
app:layout_constraintRight_toLeftOf="@+id/ic"
tools:layout_constraintTop_creator="1"
tools:layout_constraintRight_creator="1"
android:layout_marginStart="39dp"
android:layout_marginEnd="37dp"
android:layout_marginTop="19dp"
tools:layout_constraintLeft_creator="1"
app:layout_constraintLeft_toLeftOf="@+id/conquista1"
app:layout_constraintTop_toTopOf="@+id/conquista1"
app:layout_constraintHorizontal_bias="0.285"
android:layout_marginRight="37dp" />
<Button
android:id="@+id/dss"
android:layout_width="100dp"
android:layout_height="100dp"
android:src="@drawable/naranja"
android:clickable="true"
tools:ignore="MissingConstraints"
android:layout_marginEnd="97dp"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
android:layout_marginStart="97dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintRight_toRightOf="parent"
tools:layout_constraintLeft_creator="1"
app:layout_constraintLeft_toRightOf="@+id/dessi"
app:layout_constraintHorizontal_bias="0.583"
android:layout_marginBottom="16dp"
android:onClick="onClick"/>
<ImageButton
android:id="@+id/pgpi"
android:layout_width="67dp"
android:layout_height="87dp"
android:src="@drawable/naranja"
android:clickable="true"
tools:ignore="MissingConstraints"
android:layout_marginEnd="109dp"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
app:layout_constraintBottom_toTopOf="@+id/tid"
app:layout_constraintRight_toRightOf="@+id/conquista2"
android:layout_marginBottom="26dp"
tools:layout_editor_absoluteX="208dp" />
<ImageButton
android:id="@+id/ic"
android:layout_width="72dp"
android:layout_height="106dp"
android:src="@drawable/naranja"
android:clickable="true"
android:layout_marginStart="55dp"
tools:ignore="MissingConstraints"
android:layout_marginEnd="53dp"
tools:layout_constraintTop_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
app:layout_constraintBottom_toBottomOf="@+id/dss"
app:layout_constraintRight_toRightOf="@+id/pgpi"
android:layout_marginTop="135dp"
tools:layout_constraintLeft_creator="1"
android:layout_marginBottom="138dp"
app:layout_constraintTop_toTopOf="@+id/pgpi"
app:layout_constraintLeft_toRightOf="@+id/cc" />
<ImageButton
android:id="@+id/tid"
android:layout_width="117dp"
android:layout_height="111dp"
android:src="@drawable/naranja"
android:clickable="true"
tools:ignore="MissingConstraints"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintRight_toRightOf="parent"
tools:layout_constraintLeft_creator="1"
android:layout_marginBottom="156dp"
app:layout_constraintLeft_toRightOf="@+id/pgpi"
tools:layout_editor_absoluteX="267dp" />
<ImageButton
android:id="@+id/cc"
android:layout_width="69dp"
android:layout_height="153dp"
android:src="@drawable/naranja"
android:clickable="true"
android:layout_marginStart="26dp"
tools:ignore="MissingConstraints"
tools:layout_constraintTop_creator="1"
android:layout_marginTop="19dp"
app:layout_constraintTop_toBottomOf="@+id/ic"
tools:layout_constraintLeft_creator="1"
app:layout_constraintLeft_toLeftOf="parent" />
<ImageView
android:background="@color/colorPrimary"
android:id="@+id/conquista1"
android:scaleType="fitXY"
android:paddingRight="20dp"
android:paddingBottom="50dp"
android:scaleX="1.2"
android:scaleY="1.2"
android:layout_width="0dp"
android:layout_height="0dp"
android:src="@drawable/mundo01"
tools:layout_constraintTop_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
app:layout_constraintBottom_toBottomOf="@+id/cc"
app:layout_constraintRight_toRightOf="parent"
tools:layout_constraintLeft_creator="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="@+id/pgpi" />
</android.support.constraint.ConstraintLayout>
错误是：
06-17 08:33:16.056 2403-2403/com.tfm.miguel.planetaria E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.tfm.miguel.planetaria, PID: 2403
java.lang.ClassCastException: android.support.v7.widget.AppCompatButton cannot be cast to android.view.ViewGroup
at android.support.v4.app.FragmentTransition.configureTransitionsUnoptimized(FragmentTransition.java:284)
at android.support.v4.app.FragmentTransition.startTransitions(FragmentTransition.java:113)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2146)
at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2103)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2013)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:710)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
答案 0 :(得分：4)
问题出在这一行
fragmentTransaction.replace(R.id.dss, fragment2);
R.id.dss是你的按钮的id，你正在尝试做的是替换作为View的片段，这就是你得到错误的原因。
答案 1 :(得分：1)
使用Android 4.2 APIv17，支持Nested Fragments Where 你可以在其他片段中使用片段。
在 ConstraintLayout 的结束标记上方创建 FrameLayout 。
<FrameLayout
android:id="@+id/child_fragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.constraint.ConstraintLayout>
然后在 ID 部分中添加 FrameLayout fragmentTransaction.replace child_fragment 。
LogrosFragment fragment2 = new LogrosFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.child_fragment, fragment2);
fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();