复选框OnCheckedChanged通过按下Spinner来调用两次

时间：2014-01-07 17:54:36

标签： java android

这个问题是监听器OnCheckChangeListener被调用了两次......这会触发问题，见下文。

public class HomeFragmentActivity extends SherlockFragmentActivity {
 ...
 @Override
public boolean onOptionsItemSelected(MenuItem item) {
    // TODO Auto-generated method stub

    switch(item.getItemId()){
    case R.id.id_logout: removeSavedCustomer(this);
            Intent i = new Intent(this , SplashActivity.class);
            i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK);
            i.putExtra("activity_change", 0 );
            startActivity(i);
        break;
    case R.id.id_compose: 

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        ViewGroup view = (ViewGroup) LayoutInflater.from(this).inflate(R.layout.new_message, null);

        Spinner select = (Spinner) view.findViewById(R.id.messaging_spinner);

        /**
         *  add spinner adapter and list
         */
        ProjectHelper helper = new ProjectHelper(this);
        final List<MessageProject> m_project = getSpinnerData(this , helper.getListAsMessage());
        // add a dummy
        m_project.add( 0 , new MessageProject());

        final SpinnerAdapter adapter = new SpinnerAdapter(this , m_project);

        select.setAdapter(adapter);

        final EditText m_title = (EditText) view.findViewById(R.id.messaging_title);
        final EditText m_content = (EditText) view.findViewById(R.id.messaging_content);

        final TextView err_spinner = (TextView) view.findViewById(R.id.err_message_spinner);
        final TextView err_title = (TextView) view.findViewById(R.id.err_message_title);
        final TextView err_content = (TextView) view.findViewById(R.id.err_message_content);

        err_spinner.setTextColor(Color.RED);
        err_title.setTextColor(Color.RED);
        err_content.setTextColor(Color.RED);



        m_title.addTextChangedListener(new AfterTextChanged(){

            @Override
            public void abstract_afterTextChanged(Editable s) {
                // TODO Auto-generated method stub
                if(!isValidString(s.toString())){
                    error = true;
                    err_title.setText("Title should not be empty");
                }else{
                    error = false;
                    err_title.setText("");
                }


            }

        });

        m_content.addTextChangedListener(new AfterTextChanged(){

            @Override
            public void abstract_afterTextChanged(Editable s) {
                // TODO Auto-generated method stub
                if(!isValidString(s.toString())){
                    error = true;
                    err_content.setText("Content should not be empty");
                }else{
                    error = false;
                    err_content.setText("");
                }
            }

        });


        Button message = (Button) view.findViewById(R.id.m_btn_message);
        Button cancel = (Button) view.findViewById(R.id.m_btn_cancel);

        builder.setView(view);

        final AlertDialog alert = builder.create();

        message.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                /**
                 *  messaging action
                 */
            }

        });

        cancel.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                alert.dismiss();
            }

        });
        alert.show();
        break;


    }

    return super.onOptionsItemSelected(item);
}
}





public class SpinnerAdapter extends AbstractListAdapter<MessageProject> implements  IImageDownload {

protected static final String TAG = "SpinnerAdapter";
private LayoutInflater inflater;

public SpinnerAdapter(Context context, List<MessageProject> lists) {
    super(context, lists);
    // TODO Auto-generated constructor stub
    inflater = LayoutInflater.from(context);
}

@Override
public View getOverridedView(int position, View child, ViewGroup root) {
    // TODO Auto-generated method stub
    ViewHolder holder = null;
    final MessageProject mprojects = getList().get(position);
    if(child == null){
        holder = new ViewHolder();
        child = inflater.inflate(R.layout.message_spinner_projects, null , false);
        holder.image = (ImageView) child.findViewById(R.id.mp_image);
        holder.name = (TextView) child.findViewById(R.id.mp_project_name);
        holder.checkBox = (CheckBox) child.findViewById(R.id.mp_cbox);

        child.setTag(holder);
    }else{
        holder = (ViewHolder) child.getTag();
    }

    if(position == 0){
        holder.name.setText("Select atleast 1");
        holder.checkBox.setVisibility(View.INVISIBLE);
        holder.image.setVisibility(View.INVISIBLE);
        holder.checkBox.setOnCheckedChangeListener(null);

    }else{
        holder.checkBox.setVisibility(View.VISIBLE);
        holder.image.setVisibility(View.VISIBLE);
        holder.name.setText(mprojects.getName());
        holder.checkBox.setChecked(mprojects.isCheck());

        holder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener(){

            @Override
            public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
                // TODO Auto-generated method stub
                Log.d(TAG, arg0.toString());
                Log.v(TAG, "FROM " + mprojects.isCheck() + " TO " + arg1 );
                mprojects.setCheck(arg1);
                Log.d(TAG, "Project " + mprojects.getId());
                saveSpinnerData(inflater.getContext() , mprojects);
            }

        });

        /*
         *  download the weak reference bitmap image for imageview
         */
        // remove this when online
        String replace = mprojects.getImagePath().replace("http://localhost/", Utilities.HOST_NAME);
        //
        mprojects.setImagePath(replace);
        download(mprojects.getImagePath() , holder.image);
    }



    return child;
}


@Override
public void download(String url, ImageView view) {
    // TODO Auto-generated method stub
    BitmapDownloaderTask task = new BitmapDownloaderTask(view);
    task.execute(url);

}

private class ViewHolder {
    ImageView image;
    TextView name;
    CheckBox checkBox;
}
}
/**
 *  get the spinner selected projects if there is
 */
public static List<MessageProject> getSpinnerData(Context context  , List<MessageProject> data){
    SharedPreferences shared = getPreferences(context);
    for(MessageProject mproject: data){

        Log.d(TAG, "PROEJCT " + mproject.getId() + " = " + shared.getBoolean("message_is_checked_" + mproject.getId(), false));
        mproject.setCheck(shared.getBoolean("message_is_checked_" + mproject.getId(), false));

    }

    return data;

}
/**
 *  save the spinner selected projects
 */
public static void saveSpinnerData(Context context, MessageProject data){
    SharedPreferences shared = getPreferences(context);
    SharedPreferences.Editor editor = shared.edit();

    if(shared.getLong("project_id_" + data.getId(), -1) != -1){
        editor.putBoolean("message_is_checked_"+data.getId() ,data.isCheck() );
    }else{
        editor.putLong("project_id_" + data.getId(), data.getId());
    }
    editor.commit();
}

http://i.imgur.com/ZorRWT0.png?2

“这里是微调器的图像和复选框，当我按下时我的问题，当我再次按下微调器时，它被调用两次现在数据将是假的，即使它被检查，因为setOnCheckChangeListener onCheckChanged得到不只是一次而是两次。这是怎么回事？......可能的解决办法是什么？“

我现在已经解决了。太糟糕了。

1 个答案:

答案 0 :(得分：0)

解决！ 已移除onCheckChangedListener 更改为 onClickListener 因为setCheck触发OnCheckChangedListener，愚蠢的我

            holder.checkBox.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Log.d(TAG, arg0.toString());
                Log.v(TAG, "FROM " + mprojects.isCheck() + " TO " + !mprojects.isCheck() );
                mprojects.setCheck(!mprojects.isCheck());
                Log.d(TAG, "Project " + mprojects.getId());
                saveSpinnerData(inflater.getContext() , mprojects);
            }


        });

仍然非常感谢任何答案，因为我想严重使用oncheckchangelistener

它只是很奇怪，导致我按下微调器而不是复选框，仍然是oncheckchanged侦听器触发

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