如何创建没有标题的DialogFragment?

时间:2013-03-07 17:10:51

标签: android android-dialogfragment

我正在创建一个DialogFragment来显示有关我的应用的一些帮助消息。一切都运行正常除了一件事:窗口顶部有一个黑色条纹,显示DialogFragment,我认为这是为标题保留的,我不想使用。

这是特别痛苦的,因为我的自定义DialogFragment使用白色背景,所以这种改变太臭名昭着,不能放在一边。

让我以更加图形化的方式向您展示:

enter image description here

现在我的DialogFragment的XML代码如下:

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <LinearLayout
        android:id="@+id/holding" 
        android:orientation="vertical" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent"
        android:background="@drawable/dialog_fragment_bg"
        >
        <!-- Usamos un LinearLayout para que la imagen y el texto esten bien alineados -->
        <LinearLayout
            android:id="@+id/confirmationToast" 
            android:orientation="horizontal" 
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"
            >

            <TextView android:id="@+id/confirmationToastText" 
            android:layout_width="wrap_content"
            android:layout_height="fill_parent" 
            android:text="@string/help_dialog_fragment"
            android:textColor="#AE0000"
            android:gravity="center_vertical"
            />

        </LinearLayout>
        <LinearLayout
            android:id="@+id/confirmationButtonLL" 
            android:orientation="horizontal" 
            android:layout_width="fill_parent" 
            android:layout_height="fill_parent"
            android:gravity="center_horizontal"
            >    
            <Button android:id="@+id/confirmationDialogButton"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:layout_marginBottom="60dp"
                android:background="@drawable/ok_button">
            </Button>
        </LinearLayout>
    </LinearLayout>
</ScrollView>

实现DialogFragment的类的代码:

public class HelpDialog extends DialogFragment {

    public HelpDialog() {
        // Empty constructor required for DialogFragment
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        //Inflate the XML view for the help dialog fragment
        View view = inflater.inflate(R.layout.help_dialog_fragment, container);
        TextView text = (TextView)view.findViewById(R.id.confirmationToastText);
        text.setText(Html.fromHtml(getString(R.string.help_dialog_fragment)));
        //get the OK button and add a Listener
        ((Button) view.findViewById(R.id.confirmationDialogButton)).setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                 // When button is clicked, call up to owning activity.
                HelpDialog.this.dismiss();
             }
         });
        return view;
    }

}

主要活动中的创建过程:

/**
 * Shows the HelpDialog Fragment
 */
private void showHelpDialog() {
    android.support.v4.app.FragmentManager fm = getSupportFragmentManager();
    HelpDialog helpDialog = new HelpDialog();
    helpDialog.show(fm, "fragment_help");
}

我真的不知道这个与Dialog相关的答案是否适合Android: How to create a Dialog without a title?

如何摆脱这个标题区?

6 个答案:

答案 0 :(得分:582)

只需在HelpDialog.onCreateView(...)

中添加此行代码即可
getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);

这样你就明确要求获得一个没有标题的窗口:)


修改

正如@DataGraham@Blundell在下面的评论中指出的那样,使用onCreateDialog()方法而不是onCreateView()添加无标题窗口的请求会更安全。这样,当您不将片段用作Dialog时,可以防止令人烦恼的NPE:

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
  Dialog dialog = super.onCreateDialog(savedInstanceState);

  // request a window without the title
  dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
  return dialog;
}

答案 1 :(得分:75)

Dialog片段具有setStyle方法,应在视图创建Java Doc之前调用该方法。也可以使用相同的方法设置对话框的样式

public static MyDialogFragment newInstance() {
        MyDialogFragment mDialogFragment = new MyDialogFragment();
        //Set Arguments here if needed for dialog auto recreation on screen rotation
        mDialogFragment.setStyle(DialogFragment.STYLE_NO_TITLE, 0);
        return mDialogFragment;
}

答案 2 :(得分:20)

FragmentManager manager = getSupportFragmentManager();
SettingsDialog sd = new SettingsDialog();
sd.setStyle(DialogFragment.STYLE_NO_TITLE, 0);
sd.show(manager, "settings_dialog");

答案 3 :(得分:15)

尝试轻松的方法

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setStyle(STYLE_NO_TITLE, 0);
}

答案 4 :(得分:11)

public class LoginDialog extends DialogFragment {   
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.login_dialog, null);
        getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        return view;
    }   
}

答案 5 :(得分:9)

将样式设置为Theme_Holo_Dialog_NoActionBar:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setStyle(STYLE_NORMAL, android.R.style.Theme_Holo_Dialog_NoActionBar);
}