如何在 Android 中动态创建编辑文本

Question

我是 android 编程新手，动态创建文本字段时遇到问题；

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，假设 ROW =2 和 COLUMN =3 并按下按钮“创建文本字段”，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 编辑文本应位于 2 行 3 列中，如下所示

EditText-1 EditText-2 EditText-3

EditText-1 EditText-2 EditText-3

Answer 1

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);
        }

在您的 onCreate() 中使用上面的代码，其中“main”是 xml 文件。您可以将 i

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>

Answer 2

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);
            }
        }
    };

Answer 3

这就是动态创建 EditText 框的方式...

希望这有用...

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);

Answer 4

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();
        }
    }); }