我想讓數據顯示在edittext上

Question

我想讓數據首先顯示在edittext上。 我該怎么做？ 我已經將數據傳遞到了修改頁面，我想讓數據首先顯示在edittext上，然后在用戶需要更改時讓用戶更改標題。

這是我的修改頁面代碼：

public class MeTodolistModify extends AppCompatActivity implements View.OnClickListener {

    private String student_id,student_name,title,input;
    private EditText addtext;
    private Button change;
    private int position;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_me_todolist_modify);
        Bundle bundle = getIntent().getExtras();
        title = bundle.getString("title");
        position = bundle.getInt("position");
        student_id = bundle.getString("student_id");
        student_name = bundle.getString("student_name");
        createDetail();
    }

    private void createDetail(){

        final FirebaseDatabase db = FirebaseDatabase.getInstance();
        final DatabaseReference ref = db.getReference("Student").child(student_id).child("event");

        Log.e("MOD",String.valueOf(position));

        Log.e("MOD2",title);

        change = findViewById(R.id.change);

        change.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                EditText addtext = findViewById(R.id.addtext);
                input = addtext.getText().toString();
                ref.child(Integer.toString(position)).setValue(input);

                Intent intent;
                switch (v.getId()) {
                    case R.id.change:
                        intent = new Intent(MeTodolistModify.this, MeTodolist.class);
                        intent.putExtra("student_id", student_id );
                        intent.putExtra("student_name",student_name);
                        startActivity(intent);
                        break;
                }
            }
        });
    }

    @Override
    public void onClick(View v) {

    }
}

修改頁面的更新代碼：

 public class MeTodolistModify extends AppCompatActivity implements View.OnClickListener {

    private String student_id,student_name,title,input;
    private EditText addtext;
    private Button change;
    private int position;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_me_todolist_modify);
        Bundle bundle = getIntent().getExtras();
        title = bundle.getString("title");
        position = bundle.getInt("position");
        student_id = bundle.getString("student_id");
        student_name = bundle.getString("student_name");
        createDetail();
    }

    private void createDetail(){

        final FirebaseDatabase db = FirebaseDatabase.getInstance();
        final DatabaseReference ref = db.getReference("Student").child(student_id).child("event");

        Log.e("MOD",String.valueOf(position));

        Log.e("MOD2",title);

        change = findViewById(R.id.change);

        change.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                EditText addtext = findViewById(R.id.addtext);
                addtext.setText(title);
                input = addtext.getText().toString();
                ref.child(Integer.toString(position)).setValue(input);

                Intent intent;
                switch (v.getId()) {
                    case R.id.change:
                        intent = new Intent(MeTodolistModify.this, MeTodolist.class);
                        intent.putExtra("student_id", student_id );
                        intent.putExtra("student_name",student_name);
                        startActivity(intent);
                        break;
                }
            }
        });
    }

    @Override
    public void onClick(View v) {

    }
}

Answer 1

如果要以編程方式將數據設置為EditText

addtext.setText("Some text");

Answer 2

從捆綁中獲得標題后

title = bundle.getString("title");

將title設置為EditText

addtext.setText(title)

以后的用戶可以根據需要進行更改