Update : I solved this issue by using the method described in this answer
I'm a bit stuck with this issue, which I think should be pretty simple.
So my app downloads an image, and renders the bitmap in an ImageView, a child element of a RelativeLayout.
I would like the ImageView to fit the parent width, and to adapt it's size to keep the aspect ratio.
Here is my XML :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<RelativeLayout android:id="@+id/banner" android:layout_width="fill_parent" android:layout_height="wrap_content"></RelativeLayout>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</LinearLayout>
And the code :
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
RelativeLayout banner = (RelativeLayout) findViewById(R.id.banner);
ImageView imgV = new ImageView(this);
imgV.setScaleType(ImageView.ScaleType.CENTER_CROP);
// I tried all the scale types : CENTER_INSIDE : same effect, FIT_CENTER : same effect...
imgV.setBackgroundColor(0x00FFFF00);
imgV.setAdjustViewBounds(Color.BLUE);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
banner.addView(imgV,params);
// Some code downloading the image stream
bitmap = BitmapFactory.decodeStream(stream);
imgV.setImageBitmap(bitmap);
}
Desired :
Result :
Best Answer
Thanks to @Julien and @js. Here is complete solution of ImageView that will stretch bitmap height preserving aspect ratio even if bitmap is smaller than ImageView.
You can use this class in your xml layouts instead ImageView.