I am trying to display an image at different scales within an
ImageView which is part of a larger LinearLayout. Unfortunately, when
trying to calculate scaling factors, I am unable to read the
ImageView's dimensions. The following code displays "Screen: 0, 0" in
the TextView, rather than the dimensions of the ImageView, as
expected.
I have tried this in 2.0 and 2.1.
What am I doing wrong?
ViewZoom.java: (included files left out for brevity)
public class ViewZoom extends Activity {
ImageView mIv = null;
TextView mTv = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mIv = (ImageView)findViewById(R.id.image);
mTv = (TextView)findViewById(R.id.text);
}
@Override
protected void onResume()
{
super.onResume();
int screenWidth = mIv.getWidth();
int screenHeight = mIv.getHeight();
mTv.setText("Screen: " + screenWidth + ", " + screenHeight +
"\n");
}
}
main.xml:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android";
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="1"
android:adjustViewBounds="true"
android:id="@+id/image"/>
<TextView
android:layout_height="fill_parent"
android:layout_width="wrap_content"
android:layout_weight="1"
android:id="@+id/text"/>
</LinearLayout>
Thank-you for your consideration.
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