如何通过从列表视图项图像对话框而不使用意图 [英] how to pass image from listview item to a dialog box WITHOUT the use of an intent

问题描述

我有一个活动和自定义对话框。该活动有两个TextView的1张图像显示。该对话框中有一个TextView和ImageView的。当用户单击ListView中的项目对话框中显示。我试图从活动获得的ImageView在对话框中的ImageView的显示。随着一些帮助，我从活动到对话框中的TextView。但我有过的形象，以及问题。

I have an activity and custom dialog. the activity has two textview and 1 image view. the dialog box has a textview and an imageview. when a user clicks the item in the listview the dialog box shows. i am trying to get the imageview from the activity to show in the dialog box's imageview. With some help, i got the textview from the activity to the dialog box. but i am having problems passing the image as well.

我的自定义对话框：

public class MyDialogFragment extends DialogFragment {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the Builder class for convenient dialog construction
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
 // Get the layout inflater
    LayoutInflater inflater = getActivity().getLayoutInflater();
 // Inflate and set the layout for the dialog
    // Pass null as the parent view because its going in the dialog layout
    //builder.setView(inflater.inflate(R.layout.dialogb, null));
    View content = inflater.inflate(R.layout.dialogb, null);
    TextView dialogt = (TextView) content.findViewById(R.id.dialog_text);
    ImageView dialogImg = (ImageView)content.findViewById(R.id.dialog_pic);
    dialogImg.setId(getArguments().getInt("id"));
    dialogt.setText(getArguments().getCharSequence("text"));
    builder.setView(content);
    builder.setMessage(R.string.dialog_Event)
           .setPositiveButton(R.string.add_to_cal, new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                   // FIRE ZE MISSILES!
                   Toast.makeText(MyDialogFragment.this.getActivity(), "testing", Toast.LENGTH_LONG).show();
               }
           })
           .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                   // User cancelled the dialog
               }
           });
    // Create the AlertDialog object and return it

    return builder.create();
}
}

在我的活动我用这个方法：

in my activity i use this method:

public void confirmEvent(CharSequence text, int id) {
        DialogFragment mDialog = new MyDialogFragment();
        Bundle args = new Bundle();
        args.putCharSequence("text", text);
        args.getInt("id", id);

        mDialog.setArguments(args);
        mDialog.show(getSupportFragmentManager(), "missiles");
    }

这是我的onItemclick：

this is my onItemclick :

@Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id){
                //String item = ((TextView)view).getText().toString();
                int img = ((ImageView)view.findViewById(R.id.event_pic)).getId();
                String txt =((TextView)view.findViewById(R.id.subTitle_single)).getText().toString();

                //Toast.makeText(Homepage.this,img , Toast.LENGTH_SHORT).show();
                //Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();
                confirmEvent(txt, img);
            }

我真的我没有想使用意图这一点，但如果这是唯一的方法，请让我知道实施的最佳方式。

I really i didnt want to use Intents for this, but if that is the only way please let me know the best way to implement.

///// EDITED ///

更改为dialogImage.setImageResource后（所建议的评论）

after changing to dialogImage.setImageResource ( as suggested in comments)

 View content = inflater.inflate(R.layout.dialogb, null);
    TextView dialogt = (TextView) content.findViewById(R.id.dialog_text);
    ImageView dialogImg = (ImageView)content.findViewById(R.id.dialog_pic);
    //dialogImg.setImageResource(getArguments().getImageResource(R.id.event_pic));
    dialogImg.setImageResource(getArguments().getInt("id"));
    //ImageView dialogImg2 = (ImageView)dialogt
    dialogt.setText(getArguments().getCharSequence("text"));
    builder.setView(content);
    builder.setMessage(R.string.dialog_Event)

我onitemclick：

my onitemclick:

public void onItemClick(AdapterView<?> parent, View view, int position, long id){
                //String item = ((TextView)view).getText().toString();
                int img = ((ImageView)view.getTag(R.id.event_pic)).getId();
                String txt =((TextView)view.findViewById(R.id.subTitle_single)).getText().toString();

                //Toast.makeText(Homepage.this,img , Toast.LENGTH_SHORT).show();
                //Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();
                confirmEvent(txt, img);

当我点击一个项目，现在崩溃。如果我错过了图像的位置，我怎么把它放到code？

it now crashes when i click an item. if i am missing the image position, how do i put it into the code?

推荐答案

如果你能得到的图像的位置，可onItemClick（）方法保存的共享preferences 的。

If you can get the image location, within onItemClick() method save the image path in SharedPreferences.

SharedPreferences shared=getSharedPreferences("app_name", Activity.MODE_PRIVATE);
shared.edit().putString("image_path", "path").commit();

您的内部对话窗口，你可以找回，

Inside your dialog window you can retrieve it,

SharedPreferences shared=getSharedPreferences("app_name", Activity.MODE_PRIVATE);
String path=shared.getString("image_path", null);

否则你可以将其保存在缓存，但在设备处于低内部存储空间提防，Android的可以删除这些缓存文件来​​恢复空间。

Or else you can save it in cache,But beware when the device is low on internal storage space, Android may delete these cache files to recover space.

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