第二次在Dialog中填充Fragment时出错

Question

我在Activity中有以下代码,它启动包含片段的布局的对话框.

...
case R.id.pick_resource:
        dialog = new Dialog(this);
        dialog.setContentView(R.layout.resource_picker);
        dialog.setCancelable(true);
        dialog.setTitle("Pick a resource");
        dialog.show();

这在应用程序启动后第一次运行得非常好,但是当对话框退出并稍后再次调用时,我得到了这个堆栈跟踪:

08-10 10:47:33.990: ERROR/AndroidRuntime(26521): FATAL EXCEPTION: main
        android.view.InflateException: Binary XML file line #7: Error inflating class fragment
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:688)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:724)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:391)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:347)
        at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:224)
        at android.app.Dialog.setContentView(Dialog.java:449)
        at org.rhq.pocket.StartActivity.onOptionsItemSelected(StartActivity.java:118)
        at android.app.Activity.onMenuItemSelected(Activity.java:2390)
        at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:852)
        at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:153)
        at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:956)
        at com.android.internal.view.menu.ActionMenuView.invokeItem(ActionMenuView.java:174)
        at com.android.internal.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:85)
        at android.view.View.performClick(View.java:3100)
        at android.view.View$PerformClick.run(View.java:11644)
        at android.os.Handler.handleCallback(Handler.java:587)
        at android.os.Handler.dispatchMessage(Handler.java:92)
        at android.os.Looper.loop(Looper.java:126)
        at android.app.ActivityThread.main(ActivityThread.java:3997)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:491)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
        at dalvik.system.NativeStart.main(Native Method)
        Caused by: java.lang.IllegalArgumentException: Binary XML file line #7: Duplicate id 0x7f090007, tag null, or parent id 0xffffffff with another fragment for org.rhq.pocket.ResourcePickerFragement
        at android.app.Activity.onCreateView(Activity.java:4089)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:664)
        ... 24 more

有什么想法,什么可能导致这个例外？我必须以某种方式卸载片段吗？

Answer 1

布局中的片段是否具有android:id属性？

我怀疑这是因为片段每个布局充气时进行实例化,第一次没有被使用的ID,但FragmentManager仍然认为您的片段是活的,所以ID被认为是重复第二次.

尝试从片段中删除android:id属性(如果存在),或添加占位符布局(如framelayout)并使用fragmenttransaction在每次创建对话框时动态添加片段.

Answer 2

我遇到了类似的问题

我很容易解决它

关闭对话框时删除所有片段

这是我的对话

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="310dp"
    android:layout_height="260dp" >

     <fragment
        android:layout_width="310dp"
        android:layout_height="260dp"
        android:tag="one"
        class="com.android.mushrooms.CookingProgressFragment" />

    <fragment
        android:layout_width="310dp"
        android:layout_height="260dp"
        android:tag = "two"
        class="com.android.mushrooms.CookingInfoFragment" />

</RelativeLayout>

这就是删除对话框时会发生的情况

dialog.findViewById(R.id.cifButtonClose)
                .setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        mDragController.endDrag();

                        FragmentTransaction ft2 = getSupportFragmentManager()
                                .beginTransaction();

                        ft2.remove( getSupportFragmentManager()
                                .findFragmentByTag("one"));
                        ft2.remove( getSupportFragmentManager()
                                .findFragmentByTag("two"));
                        ft2.commit();
                        dialog.dismiss();
                    }
                });