How to add a view programmatically to RelativeLayout?

Question

Can you give me a very simple example of adding child view programmatically to RelativeLayout at a given position?

For example, to reflect the following XML:

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent">  <TextView     android:id="@+id/textView1"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_alignParentLeft="true"     android:layout_alignParentTop="true"     android:layout_marginLeft="107dp"     android:layout_marginTop="103dp"     android:text="Large Text"     android:textAppearance="?android:attr/textAppearanceLarge" /> 

I don't understand how to create an appropriate RelativeLayout.LayoutParams instance.

Answer 1

Heres an example to get you started, fill in the rest as applicable:

TextView tv = new TextView(mContext); RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(     ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); params.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE); params.leftMargin = 107 ... mRelativeLayout.addView(tv, params); 

The docs for RelativeLayout.LayoutParams and the constructors are here

Answer 2

Firstly, you should give an id to your RelativeLayout let say relativeLayout1.

RelativeLayout mainLayout = (RelativeLayout) findViewById(R.id.relativeLayout1); TextView mTextView = new TextView(context); mTextView.setText("Dynamic TextView"); mTextView.setId(111); RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); params.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE); params.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE); mainLayout.addView(mTextView, params);