Android - 在DialogFragment中设置imageView

Question

我有一个应用程序,其中我有一个自定义listView,单击列表视图中的任何项目,显示一个DialogFramgent.现在,我想要做的是将DialogFramgent中的imageView设置为外部存储器中的图像.我知道我可以设置imageView的源代码:

File imgFile = new  File(“/sdcard/Images/test_image.jpg”);
if(imgFile.exists()){

    Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());

    ImageView myImage = (ImageView) findViewById(R.id.imageViewItem);
    myImage.setImageBitmap(myBitmap);

}

但是,我无法正确初始化我的ImageView变量,因为findViewById给出了错误:`类型ItemDialog的方法findViewById(int)未定义.

这是我自定义listView onClickLisenter中的部分,我在其中调用我的DialogFragment:

resultListView.setOnItemClickListener(new OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> a, final View v, final int position, long id) {

        positionSelected = position;

        SearchResultListViewItem selectedRow = results.get(position);
        String selectedItem = selectedRow.getItemName();
        itemBarcode = selectedRow.getBarcode();

        itemListDB.open();

        ItemDialog itemDialog = new ItemDialog();

        itemDialog.itemName = selectedItem;
        itemDialog.brandName = itemListDB.getBrandFromItemBarcode(itemBarcode);
        itemDialog.UOMName = itemListDB.getUOMFromItemBarcode(itemBarcode);
        itemDialog.priceName = itemListDB.getPriceFromItemBarcode(itemBarcode);
        itemDialog.discountName = itemListDB.getDiscountFromItemBarcode(itemBarcode);
        itemDialog.mListener = SearchResult.this;

        itemDialog.qtyFromList = qtyInput.get(position);
        itemDialog.discFromList = qtyInput.get(position);

        itemListDB.close();
        itemDialog.show(getFragmentManager(), "");

    }
});

这是我的ItemDialog类:

public class ItemDialog extends DialogFragment implements OnClickListener{

    //my variables go over here

    public interface onSubmitListener {
        void setOnSubmitListener(String qty, String disc);  
    }  

    @Override  
    public Dialog onCreateDialog(Bundle savedInstanceState) {  

        final Dialog dialog = new Dialog(getActivity());  
        dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  
                WindowManager.LayoutParams.FLAG_FULLSCREEN);  

        dialog.setContentView(R.layout.fragment_item_dialog);  
        setStyle(DialogFragment.STYLE_NORMAL, R.style.MyDialog);

        File imgFile = new  File("/sdcard/Images/test_image.png");
        if(imgFile.exists()){

            Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());

            ImageView myImage = (ImageView) findViewById(R.id.imageViewItem);
            myImage.setImageBitmap(myBitmap);

        }

        dialog.setTitle("Item Details");
        dialog.show();  
        //I set more variables here       
        return dialog;  
    }       

}

那么,有没有人知道如何设置DialogFragment中的imageView的源图像？我被困在这里,坦率地说,我不知道如何继续,如果有人能帮助我,我将非常感激.

谢谢.

Answer 1

你需要inflate在你的Dialog Fragment下面布局onCreateDialog(...)

  LayoutInflater layoutInflater = (LayoutInflater) getActivity()
         .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

  View layout2 = layoutInflater.inflate(R.layout.contact_filter_popup,null);

  dialog.setView(layout2);

然后引用你的Imageview特定内容layout

   ImageView img=(ImageView)layout2.findViewById(R.id.imageViewItem);

更新:

@Override  
public Dialog onCreateDialog(Bundle savedInstanceState) {  

    final Dialog dialog = new Dialog(getActivity());  

    dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  
            WindowManager.LayoutParams.FLAG_FULLSCREEN);  


     LayoutInflater layoutInflater = (LayoutInflater) getActivity()
         .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    View layout2 = layoutInflater.inflate(R.layout.contact_filter_popup,null);
    dialog.setContentView(layout2);  

    setStyle(DialogFragment.STYLE_NORMAL, R.style.MyDialog);

    ImageView myImage = (ImageView) layout2.findViewById(R.id.imageViewItem);

    File imgFile = new  File("/sdcard/Images/test_image.png");

    if(imgFile.exists()){

        Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
        myImage.setImageBitmap(myBitmap);

    }

    dialog.setTitle("Item Details");
    dialog.show();  

    return dialog;  
}