如何在 Android 中动态创建编辑文本

How an Edit Text can be created dynamically in Android

提问by ishaq ahmad

I am new to android programming and I have a problem of creating text fields dynamically;

我是 android 编程的新手，我在动态创建文本字段时遇到了问题；

I want to create a view in which there is a button named "Create text fields" and two Edit Text one Edit Text name is ROW and the second edit text name is COLUMN. As a user enters numbers in the both Edit Text let say ROW =2 and COLUMN =3 and press the button "Create text fields" it may create 6 Edit Text below the button of "Create text fields". These 6-edit text should be positioned in 2 rows and 3 columns like below

我想创建一个视图，其中有一个名为“创建文本字段”的按钮和两个编辑文本，一个编辑文本名称是 ROW，第二个编辑文本名称是 COLUMN。当用户在编辑文本中输入数字时，比如说 ROW =2 和 COLUMN =3 并按下“创建文本字段”按钮，它可能会在“创建文本字段”按钮下方创建 6 个编辑文本。这些 6-edit 文本应位于 2 行 3 列中，如下所示

EditText-1 EditText-2 EditText-3

EditText-1 EditText-2 EditText-3

EditText-1 EditText-2 EditText-3

EditText-1 EditText-2 EditText-3

回答by Shankar Agarwal

setContentView(R.layout.main);
        LinearLayout ll = (LinearLayout)findViewById(R.id.ll);
        Display display = ((WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
        int width = display.getWidth()/3;
        for(int i=0;i<2;i++){
            LinearLayout l = new LinearLayout(this);
            l.setOrientation(LinearLayout.HORIZONTAL);
            for(int j=0;j<3;j++){
                EditText et = new EditText(this);
                LayoutParams lp = new LayoutParams(width,LayoutParams.WRAP_CONTENT);
                l.addView(et,lp);
          }
            ll.addView(l);
        }

use the above code in your onCreate() where "main" is xml file. and you can replace i<2 and j<3 with values of edittext 1 & 2.

在 onCreate() 中使用上面的代码，其中“main”是 xml 文件。并且您可以将 i<2 和 j<3 替换为 edittext 1 & 2 的值。

sample main.xml which i am using is below::

我正在使用的示例 main.xml 如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ll"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >


    <EditText
        android:id="@+id/et1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <requestFocus />
    </EditText>


    <EditText
        android:id="@+id/et2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />


    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" />

</LinearLayout>

回答by Chaitanya

public class DynamicEditTextActivity extends Activity {

    private EditText row, column;
    private Button submit;
    private LinearLayout main, matrix;

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        main = (LinearLayout) findViewById(R.id.mainlayout);
        row = (EditText) findViewById(R.id.row);
        column = (EditText) findViewById(R.id.column);      
        matrix = (LinearLayout) findViewById(R.id.matrix);
        matrix.setOrientation(LinearLayout.VERTICAL);

        submit = (Button) findViewById(R.id.submit);
        submit.setOnClickListener(generate);
    }

    OnClickListener generate = new OnClickListener() {

        public void onClick(View v) {

            matrix.removeAllViews();

            int rows = Integer.parseInt(row.getText().toString());
            int cols = Integer.parseInt(column.getText().toString());

            for (int i = 0; i < rows; i++) {

                LinearLayout layout = new LinearLayout(
                        DynamicEditTextActivity.this);
                layout.setOrientation(LinearLayout.HORIZONTAL);

                for (int j = 0; j < cols; j++) {

                    TextView text = new TextView(DynamicEditTextActivity.this);
                    text.setLayoutParams(new LayoutParams(
                            LayoutParams.WRAP_CONTENT,
                            LayoutParams.WRAP_CONTENT));
                    text.setText((j+1) + "    ");
                    text.setTextColor(Color.RED);

                    layout.addView(text);
                }

                matrix.addView(layout);
            }
        }
    };

回答by android developer

This is how you create an EditText box dynamically...

这就是您动态创建 EditText 框的方式...

Hope this is useful...

希望这是有用的...

This is just an example... You can reference this...

这只是一个例子......你可以参考这个......

EditText t = new EditText(myContext);
    t.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
    layout.addView(t);

---

---

final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
final EditText edit_text = new EditText(this);
edit_text.setLayoutParams(lparams);
edit_text.setText("New text: " + text);

回答by Harsh Lad

try like this function

试试这个功能

public static void display(final Activity activity, Button btn) {
    btn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            LinearLayout scrollViewlinerLayout = activity.findViewById(R.id.linearLayoutForm);
            java.util.ArrayList<String> msg = new ArrayList<String>();

            for (int i = 0; i < scrollViewlinerLayout.getChildCount(); i++)
            {
                LinearLayout innerLayout = (LinearLayout) scrollViewlinerLayout.getChildAt(i);
                EditText edit = innerLayout.findViewById(R.id.editDescricao);

                msg.add(edit.getText().toString().trim());

                int childcount = scrollViewlinerLayout.getChildCount();
                for( i =0 ; i < childcount; i++){
                    View view = scrollViewlinerLayout.getChildAt(i);
                }
            }

            Toast t = Toast.makeText(activity.getApplicationContext(), msg.toString(), Toast.LENGTH_SHORT);
            t.show();
        }
    }); }