具有自定义布局的DialogFragment导致我的应用程序崩溃 [英] DialogFragment with a custom layout causes a crash in my application

问题描述

我对Dialog片段有问题.使用我的自定义布局的简单对话框可以正常工作.但是我想在显示对话框时启动控件.我正在尝试在方法onActivityCreated中执行此操作.但是getView()返回null，因此我认为必须在onCreateView中而不是onCreateDialog中设置我的自定义视图.并在这里发生错误.当我使用onCreateView时，我的应用程序崩溃了.这是我的代码:

I have problem with Dialog fragment. Simple dialog with my custom layout is working ok. But I want to initiate controls when dialog is showing. I'm trying to do this in method onActivityCreated. But getView() return null, so I thought that I must set my custom view in onCreateView instead of onCreateDialog. And here the error occurs. When I use onCreateView then my application crashes. Here is my code:

class StatisticDialog extends DialogFragment {
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the Builder class for convenient dialog construction
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder .setPositiveButton(getString(android.R.string.ok), new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int id) {
                       // FIRE ZE MISSILES!
                   }
               });
        // Create the AlertDialog object and return it
        return builder.create();
    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        return inflater.inflate(R.layout.statistics, container, true);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }
}

我在点击活动按钮时打开此对话框:

I open this dialog on button click on activity:

StatisticDialog dlg = new StatisticDialog(); 
dlg.show(getSupportFragmentManager(), "missiles");  

错误:

11-08 18:05:14.470: E/AndroidRuntime(1075): FATAL EXCEPTION: main
11-08 18:05:14.470: E/AndroidRuntime(1075): android.util.AndroidRuntimeException: requestFeature() must be called before adding content
11-08 18:05:14.470: E/AndroidRuntime(1075):     at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:215)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at com.android.internal.app.AlertController.installContent(AlertController.java:234)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.app.AlertDialog.onCreate(AlertDialog.java:336)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.app.Dialog.dispatchOnCreate(Dialog.java:351)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.app.Dialog.show(Dialog.java:256)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.support.v4.app.DialogFragment.onStart(DialogFragment.java:385)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.support.v4.app.Fragment.performStart(Fragment.java:1336)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:907)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:635)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1431)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:420)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.os.Handler.handleCallback(Handler.java:615)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.os.Handler.dispatchMessage(Handler.java:92)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.os.Looper.loop(Looper.java:137)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at android.app.ActivityThread.main(ActivityThread.java:4745)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at java.lang.reflect.Method.invokeNative(Native Method)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at java.lang.reflect.Method.invoke(Method.java:511)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
11-08 18:05:14.470: E/AndroidRuntime(1075):     at dalvik.system.NativeStart.main(Native Method)

推荐答案

尝试一下:

class StatisticDialog extends DialogFragment {
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the Builder class for convenient dialog construction
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        LayoutInflater inflater = getActivity().getLayoutInflater();
        View view = inflater.inflate(R.layout.statistics, null);
        builder.setView(view);
        builder.setPositiveButton(getString(android.R.string.ok), new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                // FIRE ZE MISSILES!
            }
        });
        // Create the AlertDialog object and return it
        return builder.create();
    }
}

这篇关于具有自定义布局的DialogFragment导致我的应用程序崩溃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！