使用Layout Inflater方法为动态创建的EditText创建TextView

Question

我是自学成才，坠入爱河。从理论上讲，这是我的第一个android应用程序，非常简单。

问题：我已经成功地使用layoutinflator方法单击按钮来动态创建新的EditText。我的问题是，能够识别那些EditText的新ID，或者只是从用户创建的新EditText中检索新的输入值...，这样我就可以将其显示到各自的TextViews中。

谢谢你。我衷心感谢。

MainActivity.java代码：

public class MainActivity extends AppCompatActivity {

    LinearLayout parentLinearLayout;
    Button button;
    TextView result;
    EditText editName;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        parentLinearLayout = findViewById(R.id.parent_linear_layout);

        editName = findViewById(R.id.editName);
        result = findViewById(R.id.textViewName);

        button = findViewById(R.id.addName);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String name = editName.getText().toString();
                result.setText(name);
            }
        });
    }

    public void onAddField(View v) {
        LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        final View rowView = inflater.inflate(R.layout.activity_row, null);
        parentLinearLayout.addView(rowView, parentLinearLayout.getChildCount() - 1);
    }

    public void onDelete(View v) {
        parentLinearLayout.removeView((View) v.getParent());
    }

}

activity_main.xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/parent_linear_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="5dp"
    android:orientation="vertical" >
    <Button
        android:id="@+id/add_field_button"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:layout_marginBottom="5dp"
        android:background="#555"
        android:onClick="onAddField"
        android:text="Add Player"
        android:textColor="#FFF"
        />

    <TextView
        android:paddingTop="5dp"
        android:paddingLeft="5dp"
        android:id="@+id/textViewName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Name 1"
        />

    <TextView
        android:paddingTop="5dp"
        android:paddingLeft="5dp"
        android:id="@+id/textViewName2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Name 2"
        />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:orientation="horizontal" >
        <EditText
            android:id="@+id/editName"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="5" />
        <Button
            android:id="@+id/delete_button"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="@android:drawable/ic_delete"
            android:onClick="onDelete" />
    </LinearLayout>

    <Button
        android:id="@+id/addName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Submit" />

</LinearLayout>

activity_row.xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:orientation="horizontal" >
    <EditText
        android:id="@+id/number_edit_text"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="5" />
    <Button
        android:id="@+id/delete_button"
        android:layout_width="0dp"
        android:layout_height="40dp"
        android:layout_weight="1"
        android:background="@android:drawable/ic_delete"
        android:onClick="onDelete"/>

</LinearLayout>

Answer 1

尝试从膨胀视图中获取EditText和TextView，并在TextChangedListener上添加EditText并更新TextView内的onTextChanged

public void onAddField(View v) {
    LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    final View rowView = inflater.inflate(R.layout.activity_row, null);

    EditText editText = rowView.findViewById(R.id.number_edit_text);
    TextView textView = rowView.findViewById(R.id.your_text_view);

    editText.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            textView.setText(s);
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });

    parentLinearLayout.addView(rowView, parentLinearLayout.getChildCount() - 1);
}