Android View Help

Question

Hello, I am trying to have the main screen displayed from within activity using setContentView(R.layout.main); and then have an image displayed as follows:

public class TryGraph extends Activity {

/** Called when the activity is first created. */


public LinearLayout mLinearLayout;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    // Create a LinearLayout in which to add the ImageView
    mLinearLayout = new LinearLayout(this);

    // Instantiate an ImageView and define its properties
    ImageView i = new ImageView(this);
    i.setImageResource(R.drawable.face3);
    i.setAdjustViewBounds(true); // set the ImageView bounds to match the Drawable's dimensions

    mLinearLayout.addView(i);
    setContentView(mLinearLayout);

}
}

The main.xml is like this

           <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

            android:orientation="vertical"

            android:layout_width="fill_parent"

             android:layout_height="fill_parent"

             >
            <TextView  
             android:layout_width="fill_parent" 
                android:layout_height="wrap_content" 
               android:text="@string/hello"
                 />

         <Button android:text="button" android:id="@+id/Button01" 

          android:layout_width="wrap_content"               
       android:layout_height="wrap_content"></Button>

The button is hidden by the pic as it is drawn over top of button. How to place the pic on the fly at different place so that both the button and pic are displayed. note: I don't want to display pic from xml, I want to display it from LinearLayout.

Answer 1

When you add the view, you should use the version of addView that allows you to supply LayoutParams to configure how the view appears in the layout. See LayoutParams.