LinearLayout does not expand when adding edittext programmatically

Question

So I am trying to add EditText to LinearLayout programmatically. I have added a '+' ImageButton on whose click, I will add an EditText until there are five. Below is a snippet of my XML file.

<LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="@dimen/margin_16"
            android:orientation="horizontal">

            <LinearLayout
                android:id="@+id/container"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:orientation="vertical">



            </LinearLayout>

            <ImageButton
                android:id="@+id/add_field"
                android:layout_width="40dp"
                android:layout_height="40dp"
                android:layout_marginBottom="@dimen/margin_16"
                android:background="@drawable/cyan_top_rounded"
                android:src="@drawable/add" />
        </LinearLayout>

The LinearLayout with id "Container" will have EditText as child. Below is my code for adding EditText.

  mAddField.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (count < 5) {
                mAddField.setEnabled(true);
                mContainer.addView(getTextField());
                count++;
            } else {
                mAddField.setEnabled(false);
            }
        }
    });

private EditText getTextField() {

    EditText et = new EditText(this);
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    et.setLayoutParams(params);
    et.setText("abcd");

    return et;
}

 private void initUI() {
    mAddField = (ImageButton) findViewById(R.id.add_field);
    mContainer = (LinearLayout) findViewById(R.id.container);

    EditText et = new EditText(this);
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    et.setLayoutParams(params);
    et.setText("abcd");
    mContainer.addView(et);
}

However, when I click on the ImageButton, nothing happens. If the EditText is added at all, the LinearLayout also does not expand. Please help.

Answer 1

Try this:

...
            <LinearLayout
                android:id="@+id/container"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:orientation="vertical">



            </LinearLayout>
...