Question

我有两个edittext我想在edittext中保存数据，直到我没有改变它如何制作它。我尝试这样的事情，但数据无法保存。

e1 = (EditText)findViewById(R.id.editText);
    e2 = (EditText)findViewById(R.id.editText2);
    b1 = (Button)findViewById(R.id.button3);

    sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);

    b1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String homewifi  = e1.getText().toString();
            String officewifi  = e2.getText().toString();

            SharedPreferences.Editor editor = sharedpreferences.edit();

            editor.putString(HOMEWIFI, homewifi);
            editor.putString(OFFICEWIFI, officewifi);
            editor.commit();
            Toast.makeText(MainActivity.this,"Thanks",Toast.LENGTH_SHORT).show();

        }
    });

当活动再次打开时，数据不会显示在edittext中。

Answer 1

您没有从 sharedpreferences 修改代码中检索数据，如下所示：

 sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);  
     SharedPreferences.Editor editor = sharedpreferences.edit();

    e1 = (EditText)findViewById(R.id.editText);
    e2 = (EditText)findViewById(R.id.editText2);

    String homewifi = sharedpreferences.getString(HOMEWIFI, "");
    String officeWifi = sharedpreferences.getString(OFFICEWIFI, "");

    e1.setText(homewifi);
    e2.setText(officeWifi);


        b1 = (Button)findViewById(R.id.button3);

       Context.MODE_PRIVATE);

        b1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String homewifi  = e1.getText().toString();
                String officewifi  = e2.getText().toString();



                editor.putString(HOMEWIFI, homewifi);
                editor.putString(OFFICEWIFI, officewifi);
                editor.commit();
                Toast.makeText(MainActivity.this,"Thanks",Toast.LENGTH_SHORT).show();

            }
        });

Answer 2

当活动再次打开时，EditText中没有显示数据。

需要从function get_total_order($id_vendor){ $this->db->like('vendor',$id_vendor); $this->db->like('status',"due"); $this->db->from('sale'); return $this->db->count_all_results(); }获取数据并调用SharedPreferences的{{1}}方法，以便在启动setText时显示它。再次。赞：

EditText's

Answer 3

我猜你忘了将您的SharedPreferences中的字符串设置为edittext，

将其从编辑文本保存到共享偏好。

喜欢

 e1 = (EditText)findViewById(R.id.editText);
            e2 = (EditText)findViewById(R.id.editText2);
            b1 = (Button)findViewById(R.id.button3);

            sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);

            if(!TextUtils.isEmpty(sharedpreferences.getString(HOMEWIFI))){
                e1.setText(sharedpreferences.getString(HOMEWIFI));
            }
            if(!TextUtils.isEmpty(sharedpreferences.getString(OFFICEWIFI))){
                e1.setText(sharedpreferences.getString(OFFICEWIFI));
            }

            b1.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    String homewifi  = e1.getText().toString();
                    String officewifi  = e2.getText().toString();

                    SharedPreferences.Editor editor = sharedpreferences.edit();

                    editor.putString(HOMEWIFI, homewifi);
                    editor.putString(OFFICEWIFI, officewifi);
                    editor.commit();
                    Toast.makeText(MainActivity.this,"Thanks",Toast.LENGTH_SHORT).show();

                }
            });

如何使用android中的共享首选项在editText中保存数据

3 个答案: