Android 在调用片段的AppCompatDialogFragment中设置ImageView

我已经扩展了AppCompatDialogFragment，以显示一个带有ImageView的自定义对话框。我想在从调用片段显示ImageView之后设置它

我称之为：

    FragmentManager fm = getActivity().getSupportFragmentManager();
    sendingMessageDialog = new SendingMessageDialog();
    sendingMessageDialog.show(fm, "Sending Message");

以显示对话框。理想情况下，我会将其称为：

sendingMessageDialog.setImageBitmap(bmp);

之后，将在扩展的AppCompatiDialogFragment中调用：

public void setImageBitmap(Bitmap bmp) {
    imageViewIcon.setImageBitmap(bmp);
}

但是我不能将imageViewIcon设置在我能看到的任何地方。还有别的办法吗

更新

我已经改变了这一点，但是位图没有出现在ImageView中。我只看到我设置为src的默认图像

sendingMessageDialog.setImageBitmap(bmp);

调用片段代码如下所示：

        FragmentManager fm = getActivity().getSupportFragmentManager();
        sendingMessageDialog = new SendingMessageDialog();
        sendingMessageDialog.show(fm, "Sending Message");
        sendingMessageDialog.setImageBitmap(bmp);

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        Log.d(TAG, "onCreateView: ");

        View view = inflater.inflate(R.layout.send_message_dialog, null);
        imageViewIcon = view.findViewById(R.id.image_view_send_message_dialog_icon);
        if ( imageViewIcon != null && bmpIcon != null) {
            Log.d(TAG, "onCreateView: setting bitmap");
            imageViewIcon.setImageBitmap(bmpIcon);
        } else {
            Log.d(TAG, "onCreateView: bmpIcon is null = " + (bmpIcon == null));
            Log.d(TAG, "onCreateView: imageViewIcon is null = " + (imageViewIcon == null));
        }

        return view;
    }

public void setImageBitmap(Bitmap bmp) {

    Log.d(TAG, "setImageBitmap: bmp is null = " + (bmp == null));
    bmpIcon = bmp;
}

D/SendingMessageDialog: show: 
    setImageBitmap: bmp is null = false
D/SendingMessageDialog: onCreateDialog: starting
D/SendingMessageDialog: onCreateView: 
D/SendingMessageDialog: onCreateView: setting bitmap

AppCompatDialogFragment onCreateView如下所示：

        FragmentManager fm = getActivity().getSupportFragmentManager();
        sendingMessageDialog = new SendingMessageDialog();
        sendingMessageDialog.show(fm, "Sending Message");
        sendingMessageDialog.setImageBitmap(bmp);

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        Log.d(TAG, "onCreateView: ");

        View view = inflater.inflate(R.layout.send_message_dialog, null);
        imageViewIcon = view.findViewById(R.id.image_view_send_message_dialog_icon);
        if ( imageViewIcon != null && bmpIcon != null) {
            Log.d(TAG, "onCreateView: setting bitmap");
            imageViewIcon.setImageBitmap(bmpIcon);
        } else {
            Log.d(TAG, "onCreateView: bmpIcon is null = " + (bmpIcon == null));
            Log.d(TAG, "onCreateView: imageViewIcon is null = " + (imageViewIcon == null));
        }

        return view;
    }

public void setImageBitmap(Bitmap bmp) {

    Log.d(TAG, "setImageBitmap: bmp is null = " + (bmp == null));
    bmpIcon = bmp;
}

D/SendingMessageDialog: show: 
    setImageBitmap: bmp is null = false
D/SendingMessageDialog: onCreateDialog: starting
D/SendingMessageDialog: onCreateView: 
D/SendingMessageDialog: onCreateView: setting bitmap

setImageBitmap的AppCompatDialogFragment如下所示：

        FragmentManager fm = getActivity().getSupportFragmentManager();
        sendingMessageDialog = new SendingMessageDialog();
        sendingMessageDialog.show(fm, "Sending Message");
        sendingMessageDialog.setImageBitmap(bmp);

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        Log.d(TAG, "onCreateView: ");

        View view = inflater.inflate(R.layout.send_message_dialog, null);
        imageViewIcon = view.findViewById(R.id.image_view_send_message_dialog_icon);
        if ( imageViewIcon != null && bmpIcon != null) {
            Log.d(TAG, "onCreateView: setting bitmap");
            imageViewIcon.setImageBitmap(bmpIcon);
        } else {
            Log.d(TAG, "onCreateView: bmpIcon is null = " + (bmpIcon == null));
            Log.d(TAG, "onCreateView: imageViewIcon is null = " + (imageViewIcon == null));
        }

        return view;
    }

public void setImageBitmap(Bitmap bmp) {

    Log.d(TAG, "setImageBitmap: bmp is null = " + (bmp == null));
    bmpIcon = bmp;
}

D/SendingMessageDialog: show: 
    setImageBitmap: bmp is null = false
D/SendingMessageDialog: onCreateDialog: starting
D/SendingMessageDialog: onCreateView: 
D/SendingMessageDialog: onCreateView: setting bitmap

日志如下所示：

        FragmentManager fm = getActivity().getSupportFragmentManager();
        sendingMessageDialog = new SendingMessageDialog();
        sendingMessageDialog.show(fm, "Sending Message");
        sendingMessageDialog.setImageBitmap(bmp);

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        Log.d(TAG, "onCreateView: ");

        View view = inflater.inflate(R.layout.send_message_dialog, null);
        imageViewIcon = view.findViewById(R.id.image_view_send_message_dialog_icon);
        if ( imageViewIcon != null && bmpIcon != null) {
            Log.d(TAG, "onCreateView: setting bitmap");
            imageViewIcon.setImageBitmap(bmpIcon);
        } else {
            Log.d(TAG, "onCreateView: bmpIcon is null = " + (bmpIcon == null));
            Log.d(TAG, "onCreateView: imageViewIcon is null = " + (imageViewIcon == null));
        }

        return view;
    }

public void setImageBitmap(Bitmap bmp) {

    Log.d(TAG, "setImageBitmap: bmp is null = " + (bmp == null));
    bmpIcon = bmp;
}

D/SendingMessageDialog: show: 
    setImageBitmap: bmp is null = false
D/SendingMessageDialog: onCreateDialog: starting
D/SendingMessageDialog: onCreateView: 
D/SendingMessageDialog: onCreateView: setting bitmap

有助于验证该方法