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