Question

我已经写了一个DialogFragment。现在我意识到我希望它像AlertDialog一样有一个正面和负面的按钮。如何在保持我编写的代码的同时实现这样的目标？

public class DoublePlayerChooser extends DialogFragment {
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);        

    setStyle(DialogFragment.STYLE_NORMAL,0);



}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    return new AlertDialog.Builder(getActivity())
            .setTitle("title")
            .setPositiveButton("OK",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        // do something...
                    }
                }
            )
            .setNegativeButton("Cancel",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        dialog.dismiss();
                    }
                }
            )
            .create();
}



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

    View v = inflater.inflate(R.layout.doubleplayerchooser, container, false);
    getDialog().setTitle("Enter Players");

    firstPlayerPicker =  (ImageButton) v.findViewById(R.id.imageButton1);
    firstPlayerPicker.setOnClickListener(new OnClickListener() {
        public void onClick(final View v){

            callContactPicker(1);

        }       
    });

    secondPlayerPicker =  (ImageButton) v.findViewById(R.id.ImageButton01);
    secondPlayerPicker.setOnClickListener(new OnClickListener() {
        public void onClick(final View v){

            callContactPicker(2);

        }       
    });

    loadFromFile =  (ImageButton) v.findViewById(R.id.imageButton2);
    loadFromFile.setOnClickListener(new OnClickListener() {
        public void onClick(final View v){



        }       
    });

    firstTextfield =  (EditText) v.findViewById(R.id.editText1);
    secondTextfield =  (EditText) v.findViewById(R.id.EditText01);

    firstImage = (ImageView) v.findViewById(R.id.imageView1);
    secondImage = (ImageView) v.findViewById(R.id.ImageView01);



    return v;
}

Answer 1

这就是我弄清楚的方法。我删除了onCreateView并更改了onCreateDialog。这个link实际上有答案所以所有的功劳都应该去那里。我刚发布它，以防万一有人先讨论这个问题。

    @Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    AlertDialog.Builder b=  new  AlertDialog.Builder(getActivity())
    .setTitle("Enter Players")
    .setPositiveButton("OK",
        new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton) {
                // do something...
            }
        }
    )
    .setNegativeButton("Cancel",
        new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton) {
                dialog.dismiss();
            }
        }
    );

    LayoutInflater i = getActivity().getLayoutInflater();

    View v = i.inflate(R.layout.doubleplayerchooser,null);

    firstPlayerPicker =  (ImageButton) v.findViewById(R.id.imageButton1);
    firstPlayerPicker.setOnClickListener(new OnClickListener() {
        public void onClick(final View v){

            callContactPicker(1);

        }       
    });

    secondPlayerPicker =  (ImageButton) v.findViewById(R.id.ImageButton01);
    secondPlayerPicker.setOnClickListener(new OnClickListener() {
        public void onClick(final View v){

            callContactPicker(2);

        }       
    });

    loadFromFile =  (ImageButton) v.findViewById(R.id.imageButton2);
    loadFromFile.setOnClickListener(new OnClickListener() {
        public void onClick(final View v){



        }       
    });

    firstTextfield =  (EditText) v.findViewById(R.id.editText1);
    secondTextfield =  (EditText) v.findViewById(R.id.EditText01);

    firstImage = (ImageView) v.findViewById(R.id.imageView1);
    secondImage = (ImageView) v.findViewById(R.id.ImageView01);


    b.setView(v);
    return b.create();
}

Answer 2

您必须覆盖DialogFragments onCreateDialog（...）方法：

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    return new AlertDialog.Builder(getActivity())
            .setTitle("title")
            .setPositiveButton("OK",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        // do something...
                    }
                }
            )
            .setNegativeButton("Cancel",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        dialog.dismiss();
                    }
                }
            )
            .create();
}

从这里采取：Android: disable DialogFragment OK/Cancel buttons

根据您收到的错误消息（“请求功能必须被调用...”）我建议：

不要在您的Activity中的requestFeature（）之前调用setContentView（），也不要在调用它的任何地方调用它。

此外：

不要在onCreate（）中调用 setStyle（...）。

在创建片段的地方调用它。

YourDialogFragment f = new YourDialogFragment(Context);
f.setStyle(...);
// and so on ...

Answer 3

要添加操作按钮，请调用setPositiveButton()和setNegativeButton()方法：

public class FireMissilesDialogFragment extends DialogFragment {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the Builder class for convenient dialog construction
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    builder.setMessage(R.string.dialog_fire_missiles)
           .setPositiveButton(R.string.fire, new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                   // FIRE ZE MISSILES!
               }
           })
           .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                   // User cancelled the dialog
               }
           });
    // Create the AlertDialog object and return it
    return builder.create();
}
}

有关DialogFragment here的更多信息。

Answer 4

这有点旧，但最近我在扩展onCreateView时一直在覆盖AppCompatDialogFragment。只需将您自己的按钮放在onCreateView中返回的相同布局中 - 使用@style/Widget.AppCompat.Button.Borderless等样式。

单击操作按钮时，您可以获得控制Dialog自解除的额外好处，特别是因为这些自定义视图有时需要输入，并且您希望在单击按钮时阻止自动关闭Dialog。 / p>

在onCreateDialog中使用自定义视图一直感觉很脏，因为你在没有容器的情况下给它充气。 Google尝试使用新的v7 AlertDialog.Builder方法setView(int layoutResId)使API更好一些，但您无法再调用findViewById。

您应该在styles.xml中添加这样的主题：

<style name="AlertDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="colorPrimary">@color/material_light_blue_500</item>
    <item name="colorPrimaryDark">@color/material_light_blue_800</item>
    <item name="colorAccent">@color/material_light_blue_a400</item>
    <item name="colorButtonNormal">@color/material_light_blue_500</item>
    <item name="colorControlNormal">@color/material_light_blue_600</item>
    <item name="colorControlActivated">@color/material_light_blue_a100</item>
    <item name="colorControlHighlight">@color/material_light_blue_a100</item>
</style>

您必须覆盖DialogFragment中的onCreateDialog以返回new AppCompatDialog(getActivity(), R.style.AlertDialog)。

将正/负按钮添加到DialogFragment的对话框

4 个答案: