Question

我从this tutorial创建了一个可扩展列表。现在我想为每个项目设置onClickListener，并在单击项目时启动活动！问题在于：getChildView MyExpandableListAdapter我无法使用startActivity()方法。我该怎么办？

Answer 1

您可以为每个onclick和childItem设置groupItem事件，如下所示：
通过groupPosition和childPosition，您可以检测到点击了哪个项目

listView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
        @Override
        public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
            return false;
        }
    });

listView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
        @Override
        public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
            return false;
        }
    });

Answer 2

我用以下代码解决了我的问题：

    ExpandableListView listView = (ExpandableListView) findViewById(R.id.exlistView);
    MyExpandableListAdapter adapter = new MyExpandableListAdapter(MainActivity.this, MainActivity.groups)
    {
        @Override
        public View getChildView(int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
            View v= super.getChildView(groupPosition, childPosition, isLastChild, convertView, parent);

            ((LinearLayout) v).setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    //.....
                    startActivity(...);
                }
            });
            return v;
        }
    };

如何在每个可展开项目点击后启动活动

2 个答案: