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我正在从自定义的 mysql 服务器数据库中获取文本ListView。在自定义列表视图中，我将所有文本附加到 edittext。如何在edittext的内容发生更改时获取edittext值并将其存储在textview上。我想更改edittext值请帮助我

        Main.java(here i can pass json array as constructor to EditMainMenulistview.java)
        JSONArray json = jArray.getJSONArray("mainmenu");
        list=(ListView)findViewById(R.id.mainmenulist);
         adapter=new MainMenulist(this, json);
         list.setAdapter(adapter);

在这里我可以在 Main.java 中放置按钮更新//按钮

EditMainMenulistview.java

    public class EditMainMenulistview extends BaseAdapter {
protected static Context Context = null;
int i;
public String editnewmainmenu, menuname,edittext;
String qrimage;
Bitmap bmp, resizedbitmap;
Bitmap[] bmps;
Activity activity = null;
private LayoutInflater inflater;

private ImageView[] mImages;
String[] itemimage;
TextView[] tv;
String itemname, itemcode;
public String[] itemnames, itemcodes;
HashMap<String, String> map = new HashMap<String, String>();

public EditMainMenulistview(Context context, JSONArray imageArrayJson) {
    Context = context;
    // inflater =
    // (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    // imageLoader=new ImageLoader(activity);
    inflater = LayoutInflater.from(context);
    this.mImages = new ImageView[imageArrayJson.length()];
    this.bmps = new Bitmap[imageArrayJson.length()];
    this.itemnames = new String[imageArrayJson.length()];
    this.itemcodes = new String[imageArrayJson.length()];

    try {

        for (i = 0; i < imageArrayJson.length(); i++) {
            JSONObject image = imageArrayJson.getJSONObject(i);
            qrimage = image.getString("menuimage");
            itemname = image.getString("menuname");
            itemcode = image.getString("menucode");
            itemnames[i] = itemname;
            itemcodes[i] = itemcode;

            byte[] qrimageBytes = Base64.decode(qrimage.getBytes());

            bmp = BitmapFactory.decodeByteArray(qrimageBytes, 0,
                    qrimageBytes.length);
            int width = 100;
            int height = 100;
            resizedbitmap = Bitmap.createScaledBitmap(bmp, width, height,
                    true);
            bmps[i] = bmp;

            mImages[i] = new ImageView(context);
            mImages[i].setImageBitmap(resizedbitmap);

            mImages[i].setScaleType(ImageView.ScaleType.FIT_START);

            // tv[i].setText(itemname);
        }
        System.out.println(itemnames[i]);
        System.out.println(map);

    } catch (Exception e) {
        // TODO: handle exception
    }
}

public int getCount() {
    return mImages.length;
}

public Object getItem(int position) {
    return position;
}

public long getItemId(int position) {
    return position;
}

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

    View vi = convertView;

    vi = inflater.inflate(R.layout.editmainmenulist, null);

    EditText text = (EditText) vi.findViewById(R.id.editmaimenu);
    ImageView image = (ImageView) vi.findViewById(R.id.menuimage);


    image.setImageBitmap(bmps[position]);

    text.append(itemnames[position]);
     edittext = text.getText().toString();
    System.out.println(edittext);
    //Toast.makeText(Context, edittext, Toast.LENGTH_LONG).show();

    return vi;

}

}

我在 EditMaiMenulisview 中更改的文本我单击按钮（更新） Main.java 我想打印我在 Edittext 中更改的内容。请重播

4

2 回答 2

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将 getView 更改为：

public View getView(final int position, View convertView, ViewGroup parent) {
    View vi = convertView;
    if(vi == null) {

         vi = inflater.inflate(R.layout.editmainmenulist, null);
    }

    EditText text = (EditText) vi.findViewById(R.id.editmaimenu);
    ImageView image = (ImageView) vi.findViewById(R.id.menuimage);
    TextView tv = (TextView) vi.findViewById(R.id.<textViewId>); //replace with  
                                                                  //textView ID

    image.setImageBitmap(bmps[position]);

    text.append(itemnames[position]);
     edittext = text.getText().toString();
    System.out.println(edittext);
    //Toast.makeText(Context, edittext, Toast.LENGTH_LONG).show();

    tv.setText(edittext);


    return vi;

}

如果列表视图中的某些项目发生更改，则应调用 adapter.notifyDataSetChanged();

于 2012-04-04T05:08:00.600 回答
0

请使用以下代码

public View getView(final int position, View convertView, ViewGroup parent) {
    View vi = convertView;
    if(vi == null) {

         vi = inflater.inflate(R.layout.editmainmenulist, null);
    }

    EditText text = (EditText) vi.findViewById(R.id.editmaimenu);
    ImageView image = (ImageView) vi.findViewById(R.id.menuimage);
    TextView tv = (TextView) vi.findViewById(R.id.<textViewId>); //replace with  
                                                                  //textView ID

    image.setImageBitmap(bmps[position]);

    text.append(itemnames[position]);
     edittext = text.getText().toString();
text.addTextChangedListener(new TextWatcher() {

    public void afterTextChanged(Editable s) {
         Log.v("LOG","After text change value "+s.toString());
    }

    public void beforeTextChanged(CharSequence s, int start, int count,
            int after) {
        // TODO Auto-generated method stub

    }

    public void onTextChanged(CharSequence s, int start, int before,
            int count) {
        // TODO Auto-generated method stub

    }

});
     System.out.println(edittext);
        //Toast.makeText(Context, edittext, Toast.LENGTH_LONG).show();
     tv.setText(edittext);
   return vi;
}

您可以在 afterTextChange 方法中获取值

于 2012-04-04T05:53:26.303 回答