Question

我有一个包含图像和textview的布局的fragmentpageradapter，我希望两者都能改变。

我试图调整以下代码（在网络上找到了不同的地方 - 如果原作者知道我想要承认）

    @Override
    public Fragment getItem(int position) {
        switch (position) {
        case 0:
            return new DetailFragment();
        case 1:
            return new ImageFragment(R.drawable.human);
        case 2:
            return new ImageFragment(R.drawable.logo);

        default:
            return null;
        }
    }
}
}

....控制一个班级

public class ImageFragment extends Fragment {
private final int imageResourceId;

public ImageFragment(int imageResourceId) {
    this.imageResourceId = imageResourceId;
}
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.e("Test", "hello");
}

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

}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.image_layout, container, false);
    ImageView imageView = (ImageView) view.findViewById(R.id.imageView1);
    imageView.setImageResource(imageResourceId);
    return view;
}

}

现在代码运行但是抛出错误＆＃34;片段应该有一个空的构造函数＆＃34;所以我试着从这里调整代码 Do fragments really need an empty constructor? 给出以下内容 - 我试图只发送一个页面，其中一个字符串和一个图像以相对布局形式发送到片段。以下代码编译但不会运行。我认为最糟糕的错误在主要源代码中。：

public static class MyAdapter extends FragmentPagerAdapter {
    public MyAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public int getCount() {
        return 1;
    }

    @Override

    public Fragment getItem(int position) {
        switch (position) {
        case 0: {
            ImageFragment f = (ImageFragment) new Fragment();
            Bundle bdl = new Bundle(2);
            bdl.putInt("theShape", R.string.shape1);
            bdl.putInt("theImage", R.drawable.triangle);
            f.setArguments(bdl);
            return f;

        }

.....这里是片段的内脏

public int stringResourceId;
public int imageResourceId;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.e("Test", "bollocks");
    stringResourceId = getArguments().getInt("theString");
    imageResourceId = getArguments().getInt("theImage");

}


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

}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.layout_shapes, container, false);
    ImageView imageView = (ImageView) view.findViewById(R.id.imageView1);
    imageView.setImageResource(imageResourceId);
    return view;
}
}

感谢。任何提示赞赏

通过fragmentpageradapter传递多个参数

0 个答案: