导航抽屉以编程方式更改片段

Question

我正在Android使用Navigation Drawer. fragment我想在单击按钮时更改电流。

public void btnClick(){
    ...
    changeFragment();
    ...
}

private void changeFragment() {
    Fragment home = new Home();
    FragmentTransaction ft = getFragmentManager().beginTransaction();
    ft.replace(R.id.navigation_drawer, home);
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
    ft.addToBackStack(null);
    ft.commit();
}

我收到以下错误LogCat：

FATAL EXCEPTION: main
java.lang.UnsupportedOpetaionException: addView(View) is not supported in AdapterView

我的Home片段在开始时加载并显示，在移动到另一个片段并单击按钮后我想自动返回到Home片段。

我怎样才能做到呢？

编辑：完整的错误日志

06-28 21:19:26.262: E/AndroidRuntime(5023): FATAL EXCEPTION: main
06-28 21:19:26.262: E/AndroidRuntime(5023): Process: com.susu.appclient, PID: 5023
06-28 21:19:26.262: E/AndroidRuntime(5023):     java.lang.UnsupportedOperationException: addView(View) is not supported in AdapterView
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.widget.AdapterView.addView(AdapterView.java:461)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:968)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1136)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1499)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:456)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.os.Handler.handleCallback(Handler.java:739)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.os.Handler.dispatchMessage(Handler.java:95)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.os.Looper.loop(Looper.java:135)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at android.app.ActivityThread.main(ActivityThread.java:5254)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at java.lang.reflect.Method.invoke(Native Method)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at java.lang.reflect.Method.invoke(Method.java:372)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
06-28 21:19:26.262: E/AndroidRuntime(5023):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Answer 1

如果我理解，您正在尝试更改导航抽屉下方的片段，而不是导航抽屉本身（这要复杂得多）。

在这一行中：

 ft.replace(R.id.navigation_drawer, home);

您必须将 R.id.navigation_drawer 替换为应位于 Activitylayout.xml 上的 FragmentLayout。

就像是：

ft.replace(R.id.fragment_layout, home);