How to add icon inside EditText view in Android ?

If you want to use Android's default drawable, you can use @android:drawable/ic_menu_search like this:

<EditText android:id="@+id/inputSearch"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:drawableLeft="@android:drawable/ic_menu_search"
    android:hint="Search product.."
    android:inputType="textVisiblePassword"/>

You can set drawableLeft in the XML as suggested by marcos, but you might also want to set it programmatically - for example in response to an event. To do this use the method setCompoundDrawablesWithIntrincisBounds(int, int, int, int):

EditText editText = findViewById(R.id.myEditText);

// Set drawables for left, top, right, and bottom - send 0 for nothing
editTxt.setCompoundDrawablesWithIntrinsicBounds(R.drawable.myDrawable, 0, 0, 0);

Use the android:drawableLeft property on the EditText.

<EditText
    ...     
    android:drawableLeft="@drawable/my_icon" />

Use :

<EditText
    ..     
    android:drawableStart="@drawable/icon" />