DialogFragment set height of Dialog

问题

I just used created by first Dialog using DialogFragment. Everything works great except I can't get the Dialog to wrap it's layout. My layout has the height of all elements to wrap_content.

In MyFragmentDialog I can't even find a method that would imply that it can be used to set the height of the FragmentDialog. What am I missing? How do I make a DialogFragment fit it's content?

The DialogFrament's onCreateView method:

    @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    // Set title for this dialog
    getDialog().setTitle("Backup & Restore");
    getDialog().setCancelable(true);

    View v = inflater.inflate(R.layout.backup_restore, container, false);
    TextView msg = (TextView) v.findViewById(R.id.br_label_message);
    msg.setText("Backups are placed in the Downloads Directory:\n" + BACKUP_PATH.getAbsolutePath());
    // TextView files_label = (TextView) v.findViewById(R.id.label_restore);
    Spinner files = (Spinner) v.findViewById(R.id.br_restore_file);

    if (BACKUP_PATH.exists()) {
        FilenameFilter filter = new FilenameFilter() {
            public boolean accept(File dir, String filename) {
                File sel = new File(dir, filename);
                return filename.contains(FTYPE) || sel.isDirectory();
            }
        };
        mFileList = BACKUP_PATH.list(filter);
    } else {
        mFileList = new String[0];
    }

    ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(getActivity(), android.R.layout.simple_spinner_item, mFileList);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    files.setAdapter(adapter);
    files.setOnItemSelectedListener(this);

    Button backup = (Button) v.findViewById(R.id.br_backup_btn);
    Button restore = (Button) v.findViewById(R.id.br_restore_btn);
    Button cancel = (Button) v.findViewById(R.id.br_cancel_btn);

    backup.setOnClickListener(this);
    restore.setOnClickListener(this);
    cancel.setOnClickListener(this);

    return v;
}

This is the layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="8dp" >

    <TextView
        android:id="@+id/br_label_message"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingBottom="8dp"
        android:text=""
        android:textSize="14sp" />

    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TableRow
            android:id="@+id/br_tableRow1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/br_label_restore"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingRight="8dp"
                android:text="Restore file"
                android:textSize="14sp" />

            <Spinner
                android:id="@+id/br_restore_file"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </TableRow>
    </TableLayout>

    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TableRow>

            <Button
                android:id="@+id/br_restore_btn"
                android:layout_width="0dip"
                android:layout_height="wrap_content"
                android:layout_weight=".5"
                android:text="Restore"
                android:textSize="14sp" />

            <Button
                android:id="@+id/br_backup_btn"
                android:layout_width="0dip"
                android:layout_height="wrap_content"
                android:layout_weight=".5"
                android:text="Backup"
                android:textSize="14sp" />
        </TableRow>
    </TableLayout>

    <Button
        android:id="@+id/br_cancel_btn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Cancel"
        android:textSize="14sp" />

</LinearLayout>

Thanks,

回答1:

It turns out to be an issue with LinearLayout despite setting a height on it, in DialogFragment it seems to be taking more space than I want it to. I switched layout to be a RelativeLayout the content Dialog seems to resize to fit the content.

回答2:

You can make it work with all kind of layout in adding the size of the layout in the onResume of your dialogFragment :

  @Override
    public void onResume()
    {
        super.onResume();
        Window window = getDialog().getWindow();
        window.setLayout(300, 300);
        window.setGravity(Gravity.CENTER);
}

回答3:

I took a leap into the Dialog api so I am certainly not sure but you could try to call getWindow on the dialog and then call setLayout(width, height)

getDialog().getWindow().setLayout(300,300);

回答4:

I don't see the top portion of your LinearLayout tag, but I've seen cases where all that was needed was the

android:orientation="vertical"

XML attribute. It can cause a headache but is fortunately easy to fix.

来源：https://stackoverflow.com/questions/8958124/dialogfragment-set-height-of-dialog