Question

所以我试图将子项的名称作为字符串获取，以便我可以将它添加到我收集的其他数据并将其插入到数据库中，但这种方法不起作用，我得到的只是名称父母的。

 exp_list.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
        @Override
        public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
            TextView the = (TextView) findViewById(R.id.child_txt);
            String tx = the.getText().toString();
            Toast.makeText(getBaseContext(), tx + " Child Clicked", Toast.LENGTH_SHORT).show();

            // Store value in sharedPreferences();

            Intent l = new Intent(CategoryActivity.this, AddRecipeActivity.class);
            startActivity(l);
            return false;
        }
    });

Answer 1

尝试从适配器获取数据（您的String）而不是视图：

    exp_list.setOnChildClickListener(new ExpandableListView.OnChildClickListener() { 
             @Override 
              public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { 

                String tx = parent.getExpandableListAdapter().getChild(groupPosition, childPosition);// this will return your child Object (i guess String in your case)
                Toast.makeText(getBaseContext(), tx + " Child Clicked", Toast.LENGTH_SHORT).show();

                // Store value in sharedPreferences();

                Intent l = new Intent(CategoryActivity.this, AddRecipeActivity.class);
                startActivity(l);
                return false;
            }
        });

在onClick为String后，从ExpandableListView返回项名称

1 个答案: