Gridview及其图像并不适合所有屏幕尺寸 [英] Gridview and its images is not fit for all screensize

问题描述

就像我的标题gridview一样，它的图像不适用于所有屏幕.

As in my title gridview and it is images are not get fit for all screens .

在我的应用中，我有15张图像，它是标题，我想在所有屏幕尺寸的3列和5行格式中显示它.

In my app I have 15 images and it is titles ,I wanna show it on a 3 column and 5 row format in all screen sizes.

但是我的Gridview并不适合所有屏幕尺寸和图像，标题未正确对齐.

But my Gridview is not fit for all screen sizes and images,titles are not get properly aligned .

我已经在以下API级别上测试了我的应用，并获得了以下响应.

I have tested my app in following API levels and got the below response .

Reminders.java

Reminders.java

public class Reminders extends Fragment {

    private OnFragmentInteractionListener mListener;
    private  View rootView;

    public Reminders() {

    }

    public static Reminders newInstance(String param1, String param2) {
        Reminders fragment = new Reminders();
        Bundle args = new Bundle();
        fragment.setArguments(args);
        return fragment;
    }

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

    @Override
    public View onCreateView(LayoutInflater inflater,
                             ViewGroup container,
                             Bundle savedInstanceState) {
        rootView = inflater.inflate(R.layout.fragment_reminders, container, false);
        GridView gridView = (GridView) rootView.findViewById(R.id.photogridview);
        gridView.setAdapter(new ImageAdapter(rootView.getContext())); // uses the view to get the context instead of getActivity().
        return  rootView;
    }

    public void onButtonPressed(Uri uri) {
        if (mListener != null) {
            mListener.onFragmentInteraction(uri);
        }
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnFragmentInteractionListener) {
            mListener = (OnFragmentInteractionListener) context;
        } else {
            throw new RuntimeException(context.toString()
                    + " must implement OnFragmentInteractionListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    public interface OnFragmentInteractionListener {
        void onFragmentInteraction(Uri uri);
    }
}

推荐答案

因此，问题在于如何在此方法中创建View，并且有几处错误:

So, the issue is with how you're creating the View in this method, and there's a couple of things going wrong:

public View getView(int position, View convertView, ViewGroup parent) {

    LinearLayout linearlayout=new LinearLayout(mContext);
    ImageView imageView = new ImageView(mContext);
    TextView textView =new TextView(mContext);
    textView.setGravity(Gravity.CENTER);
    linearlayout.setOrientation(LinearLayout.VERTICAL);
    imageView.setImageResource(mThumbIds[position]);
    imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
    imageView.setLayoutParams(new GridView.LayoutParams(230, 230));
    textView.setText(mThumbTxt[position]);

    linearlayout.addView(imageView);
    linearlayout.addView(textView);
    return linearlayout;
}

1)现在，您忽略了convertView，因此浪费了GridView的回收机制，方法是在实例化View之前不检查其是否为空.

1) Right now, you're ignoring the convertView, so you're wasting GridViews recycling mechanism by not checking if that is null before instantiating the View.

2)您将GridView.LayoutParams附加到嵌套在LinearLayout中的子视图. LinearLayout应该具有GridView.LayoutParams，但是LinearLayout的子级应该具有LinearLayout.LayoutParams.

2) You're attaching GridView.LayoutParams to a child View nested within a LinearLayout. The LinearLayout should have GridView.LayoutParams, but the LinearLayout's children should have LinearLayout.LayoutParams.

3)layout_gravity和gravity之间是有区别的–您使用的是重力，因此LinearLayout不能按您认为的那样工作. (除非在这种情况下，您将TextView的宽度更改为match_parent，否则可能会使其他内容混乱)

3) There's a difference between layout_gravity, and gravity -- you're using gravity, which for LinearLayout won't work as you think it should. (Unless in this context you change your TextView to be match_parent for width, but then that might mess other things up)

我建议放弃动态创建并采用XML填充方法.

I'd recommend ditching the dynamic creation and taking an XML inflation approach.

这篇关于Gridview及其图像并不适合所有屏幕尺寸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！