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我为我的列表视图创建了一个自定义适配器,这样我的复选框和列表上也可以有监听器事件。以下是我的代码:

public class CustomAdapter extends ArrayAdapter<String> {
    private final Activity context;
    private final String[] names;
    private final String TAG = "MyPerformanceArrayAdapter";
    private static final int TASK_CREATE = 0;
    private static final int ACTIVITY_EDIT = 1;


    static class ViewHolder {
        public TextView text;
        public CheckBox reminderCheckBox;
    }

    public CustomAdapter(Activity context, String[] names) {
        super(context, R.layout.reminder_row, names);
        this.context = context;
        this.names = names;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View rowView = convertView;
        if (rowView == null) {
            LayoutInflater inflater = context.getLayoutInflater();
            rowView = inflater.inflate(R.layout.reminder_row, null);
            ViewHolder viewHolder = new ViewHolder();
            viewHolder.text = (TextView) rowView.findViewById(R.id.reminderRowTextId);
            viewHolder.reminderCheckBox = (CheckBox) rowView.findViewById(R.id.CheckBoxId);
            rowView.setTag(viewHolder);
        }
        final int pos = position;
        final ViewHolder holder = (ViewHolder) rowView.getTag();

        String s = names[position];
        holder.text.setText(s);

        holder.reminderCheckBox.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (holder.reminderCheckBox.isChecked()) {
                    Toast.makeText(getContext(), "pos-->chkd" + pos, Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(getContext(), "pos-->un--chkd" + pos, Toast.LENGTH_SHORT).show();
                }
            }

        });

        holder.text.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getContext(), "TEXT CLICKED" + pos , Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(context,ReminderModificationActivity.class);
                intent.putExtra(TasksDBAdapter.KEY_ROWID, pos);
                Log.i(TAG, "row clickd --> " + pos);
                startActivity(intent,ACTIVITY_EDIT); <<<<-------ERROR ON THIS LINE
            }
        });
        return rowView;
    }
} 

我在尖线 (startActivity(intent,ACTIVITY_EDIT);) 上遇到的错误是:

未为类型 new View.OnClickListener(){} 定义方法 startActivity(Intent, int)

任何人都可以提供一些相同的指示吗?

4

3 回答 3

2

由于您的代码位于 View.OnClickListener 中,因此使用了错误的上下文。您需要在 Activity 类而不是 View.OnClickListener 类上调用 startActivity()。

为此,您应该能够:

context.startActivity(intent, ACTIVITY_EDIT);

或者

((Activity) context).startActivity(intent, ACTIVITY_EDIT);

于 2012-11-15T16:07:54.053 回答
0
Intent mintent = new Intent(context,ReminderModificationActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

context.startActivity(mintent);
于 2012-11-15T16:26:11.807 回答
0

改为使用CustomAdapter.this.getContext().startActivity()

为什么:

要从内部匿名类引用外部实例,请使用OuterClassName.this. 在你的情况下CustomAdapter.this

而且,要开始活动,您需要Context,您可以通过调用getContext()的方法获得ArrayAdapter

于 2012-11-15T16:13:34.427 回答