列表视图切换按钮单击以停止不同 class 的 alarmManager

Question

所以我的主 activity 中有一个包含切换按钮的列表视图我想初始化并使用切换按钮我所知道的是我应该在我的 getView 中初始化它，而不是在我的 onCreate 中，因为它在列表视图中但是无论我是在 onCreate 还是 getView 中设置它，我都会得到一个空指针异常指向我的行 toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {.. 我做错了什么

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

        View row = convertView;
        ViewHolder holder = null;
        if(row==null || row.getTag()==null){
            LayoutInflater inflater = LayoutInflater.from(activity);
            row = inflater.inflate(layoutResource,null);
            holder=new ViewHolder();

            holder.mTitle=(TextView)row.findViewById(R.id.name);
            holder.mDate=(TextView)row.findViewById(R.id.dateText);
            holder.mTime=(TextView)row.findViewById(R.id.timeText);

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



        holder.myAlarm = getItem(position);
        holder.mTitle.setText(holder.myAlarm.getTitle());
        holder.mDate.setText(holder.myAlarm.getMonth()+" "+holder.myAlarm.getDay()+", "+holder.myAlarm.getYear());

        ToggleButton toggle = (ToggleButton) findViewById(R.id.toggleButton);
        toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    Toast.makeText(MainActivity.this, "IT IS CHECKED", Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(MainActivity.this, "IT IS NOT CHECKED", Toast.LENGTH_SHORT).show();
                }
            }
        });

 return row;
 }

任何帮助将不胜感激

Answer 1

您的切换按钮是否包含在列表视图的每一行中？如果不是使用这个

ToggleButton toggle = (ToggleButton) findViewById(R.id.toggleButton);

使用这个

holder.toggle = (ToggleButton) row.findViewById(R.id.toggleButton);

列表视图切换按钮单击以停止不同 class 的 alarmManager

listview toggle button click to stop alarmManager of different class

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