因此,我有一个Gridview,其中每个网格项都包含一个ImageView和一个Checkbox。它调用Image Adapter来动态填充网格。现在,当我选择一个复选框时,假设数字5是自动选中另一个复选框(例如数字12)。取消选择类似。我不知道为什么会这样。任何帮助将不胜感激。谢谢!

public class SignupFarmerCrop extends ActionBarActivity implements View.OnClickListener {

GridView gridView;
private ImageAdapter adpt;
private List<DistrictCommodity> localResponse;
private MediaPlayer mp;
private boolean[] thumbnailsselection;
private int count;

private PreferencesHelper oldSignup;
private String district;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_signup_farmer_crop);

    setVolumeControlStream(AudioManager.STREAM_MUSIC);
    ImageButton sound = (ImageButton) findViewById(R.id.button);
    sound.setOnClickListener(this);

    oldSignup = new PreferencesHelper(this);
    district = oldSignup.getStringPreferences("districtId");
    String language = Locale.getDefault().getLanguage();
    if (language.equals("en"))
        language = "L001";
    else
        language = "L002";

    // Exec async load task
    new EndpointsDistrictCropAsyncTask().execute(new Pair<Context, String>(this, district),
            new Pair<Context, String>(this, language));

    gridView = (GridView) findViewById(R.id.gridView1);
    adpt = new ImageAdapter(this, localResponse);
    gridView.setAdapter(adpt);

public void onClick(View v) {
    if (mp != null) mp.release();

    mp = MediaPlayer.create(this, R.raw.fname);
    mp.start();
}

/** Called when the user clicks a crop button */
public void goConfirm(View view) {
    // Do something in response to button
    Intent intent = new Intent(this, SignupConfirmActivity.class);
    startActivity(intent);
}

@Override
protected void onDestroy() {
    if(null!=mp){
        mp.release();
    }
    super.onDestroy();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    // Inflate the menu items for use in the action bar
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu_signup_farmer_crop, menu);
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    return super.onOptionsItemSelected(item);
}

public class ImageAdapter extends BaseAdapter {
    private Context context;
    private List<DistrictCommodity> crops;
    private final Logger logger = Logger.getLogger(ImageAdapter.class.getName());

    public ImageAdapter(Context context, List<DistrictCommodity> activeResponses) {
        this.context = context;
        this.crops = activeResponses;
    }

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

        View gridView = convertView;
        ViewHolder holder;
        if (gridView == null) {
            holder = new ViewHolder();
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            gridView = inflater.inflate(R.layout.activity_signup_crop_grid, null);
            holder.checkbox = (CheckBox) gridView.findViewById(R.id.grid_item_label);
            holder.imageview = (ImageView) gridView.findViewById(R.id.grid_item_image);

            gridView.setTag(holder);
        }

        else {
            holder = (ViewHolder) gridView.getTag();
        }

        holder.checkbox.setId(position);
        holder.imageview.setId(position);

        holder.checkbox.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                CheckBox cb = (CheckBox) v;
                int id = cb.getId();
                logger.warning("Id of checkbox is: " + id);
                if (thumbnailsselection[id]) {
                    cb.setChecked(false);
                    thumbnailsselection[id] = false;
                } else {
                    cb.setChecked(true);
                    thumbnailsselection[id] = true;
                }
            }
        });


        holder.checkbox.setText(crops.get(position).getCommodity());

        String crop = crops.get(position).getType();
        logger.warning("Image file called is @drawable/" + crop + ".png and context is: " + context.getPackageName());
        Drawable drawable = context.getResources().getDrawable(context.getResources()
                .getIdentifier("@drawable/potato", null, context.getPackageName()));

        holder.imageview.setImageDrawable(drawable);
        holder.id = position;

        return gridView;
    }

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

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

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

    public void setActiveDeals(List<DistrictCommodity> activeResponses) {
        this.crops = activeResponses;
    }
}

class ViewHolder {
        ImageView imageview;
        CheckBox checkbox;
        int id;
}


}

最佳答案

单击时,会将复选框的状态保存在thumbnailsselection中,但不要在getView()中使用该状态来设置复选框的初始外观。因此,您可能会从回收的视图中获得随机的复选框状态。

holder.checkbox.setState()状态呼叫thumbnailsselection以创建具有正确复选框外观的GridView项目。

07-28 02:09
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