将ListView中的EditText值传递给另一个Activity

时间:2016-12-06 05:36:56

标签: android csv

我有三项活动。在一个Activity中,我从CSV文件中读取数据并使用ListView,我在EditText中显示了该数据。现在,我想将EditText的值传递给另一个Activity。可以做些什么来解决这个问题?

代码:

    String dir = Environment.getExternalStorageDirectory() + "/grocery/data/" + spinner.toString();

    final File csvfile = new File(dir.toString());

    ListView listView = (ListView) findViewById(R.id.listview);

    MyList adapter = new MyList(getApplicationContext(), R.layout.activity_editfeild);

    listView.setAdapter(adapter);


    studentid= (EditText) findViewById(R.id.et_studentid);
    Schoolname= (EditText) findViewById(R.id.et_schoolname);
    schoolAdress= (EditText) findViewById(R.id.et_schooladd);
    studentname=(EditText) findViewById(R.id.et_studentname);
    fathername= (EditText) findViewById(R.id.et_fathername);
    mothername= (EditText) findViewById(R.id.et_mothername);
    studentaddress= (EditText) findViewById(R.id.et_studentadd);

 //Toast.makeText(Editinfo.this, studentid.getText().toString(), Toast.LENGTH_SHORT).show();


    FileInputStream inputStream = null;
    try {
        inputStream = new FileInputStream(csvfile);
    } catch (FileNotFoundException e){
        e.printStackTrace();
    }

    CSVReader reader = new CSVReader(inputStream);

    final List<String[]> myList=reader.read();

    for (String[] data : myList) {
        adapter.add(data);
    }

    next.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent intent = new Intent(getApplicationContext(), Editinfo1.class);

            intent.putExtra("spinner", chosenOption);

            intent.putExtra("studentid", studentid.getText().toString());

            intent.putExtra("schoolname", Schoolname.getText().toString());
            intent.putExtra("schooladdress", schoolAdress.getText().toString());
            intent.putExtra("studentname", studentname.getText().toString());
            intent.putExtra("fathername", fathername.getText().toString());
            intent.putExtra("mothername", mothername.getText().toString());
            intent.putExtra("studentaddress", studentaddress.getText().toString());
            intent.putExtra("myList", (Serializable) myList);
            //intent.putExtra("mylist", myList);
            startActivity(intent);
        }
    });
}

1 个答案:

答案 0 :(得分:0)

修改您的适配器,如下面的代码:

定义新的ArrayListPrivate List<String> listItemChosen = new ArrayList<>();

创建返回列表的方法:

private List<String> getSelectedString(){
        return listItemChosen;
    }
你的onClick中的

如下所示:

SharedPreferences sharedPreferences = context.getSharedPreferences(Constants.MODE_SHARED, Context.MODE_PRIVATE);
final SharedPreferences.Editor edit = sharedPreferences.edit();
final Gson gson = new Gson();

holder.tvItemName.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    listItemChosen.add(itemName);
                    String jsonString = gson.toJson(getSelectedString());
                    edit.putString(Constants.KEY_SHARED,jsonString);
                    edit.commit();
                }
            });

上面的代码只是添加条件。每次点击textview,它都会将所选项目保存在您的列表中。

如果您需要删除已添加的项目,则应再次添加参数,如int参数,首先单击它将添加项目,第二次单击相同的textview将删除该项目。

我的参考文字看起来像你需要的,但HERE使用复选框。但一般来说,逻辑仍然相同。

让我知道是否有遗漏