Question

我希望将片段中的数据发送到活动，但我现在的代码不起作用。

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

    Intent intent = new Intent();
    Context ctx = getActivity();
    DBoperations db = new DBoperations(ctx);
    Cursor cr = db.getInfo(db);
    cr.moveToFirst();
    long count = id;
    while( count > 0){
        cr.moveToNext();
        count --;
    }
    String ID = Integer.toString(cr.getInt(0));
    String Name = cr.getString(1);
    intent.putExtra("extra",ID + " " + Name);
    startActivity(getActivity(),LocationInfo.class);
}

此函数位于扩展Fragment的类中。这里整个最后一行startActivity（...）用红色下划线标出：

片段中的
startActivity（android.content.intent，android.os.Bundle）无法应用（android.support.v4.app.FragmentActivity，java.lang.Class中）

那么如何将数据从片段传递给活动？

Answer 1

我没有写

startActivity(new Intent(getActivity(),LocationInfo.class));

这是唯一的问题......

Answer 2

试试这个：

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

    Intent intent = new Intent(getActivity(), LocationInfo.class);
    Context ctx = getActivity();
    DBoperations db = new DBoperations(ctx);
    Cursor cr = db.getInfo(db);
    cr.moveToFirst();
    long count = id;
    while( count > 0){
        cr.moveToNext();
        count --;
    }
    String ID = Integer.toString(cr.getInt(0));
    String Name = cr.getString(1);
    intent.putExtra("extra",ID + " " + Name);
    startActivity(intent);
}

如何将数据从片段发送到活动？

2 个答案: