How to Programmatically Add a TextView to a LinearLayout in Android?

How to Add a TextView to LinearLayout in Android

In Android programming, occasionally you need to add views to a pre-defined XML layout dynamically in your code. This can be achieved by following a systematic approach.

Let's say you have an XML layout with a LinearLayout with an ID "info":

<code class="xml"><LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/info"
android:layout_height="wrap_content" 
android:orientation="vertical"
>
</LinearLayout></code>

To add a TextView to this LinearLayout in code:

1. Get the LinearLayout view from your XML layout:

   <code class="java">View linearLayout =  findViewById(R.id.info);</code>

2. Create a TextView programmatically:

   <code class="java">TextView valueTV = new TextView(this);</code>

3. Configure the TextView:

   <code class="java">valueTV.setText("hallo hallo");
   valueTV.setId(5);</code>

4. Set the TextView layout parameters:

   <code class="java">valueTV.setLayoutParams(new LayoutParams(
   LayoutParams.FILL_PARENT,
   LayoutParams.WRAP_CONTENT));</code>

5. Add the TextView to the LinearLayout:

   <code class="java">((LinearLayout) linearLayout).addView(valueTV);</code>

Note: Make sure to use LinearLayout.LayoutParams for the TextView's layout parameters and cast the linearLayout view to LinearLayout before adding the valueTV TextView to it.

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