Show AlertDialog with ImageView without any padding

Question

EDIT - SOLUTION:

I ended up figuring out a way to solve this issue. Because manually changing the height of the ImageView removes the extra padding,

Answer 1

Please set your view's LinearLayout attribute i.e.android:layout_height="match_parent". Hope it will work.

Answer 2

It might be late, but I think that setting android:adjustViewBounds = "true" in the ImageView could help. Also, I usually set android:scaleType = "centerInside" or android:scaleType = "centerCrop"

Answer 3

I add this attributes to my ImageView.

<ImageView
  (...)
  android:adjustViewBounds="true" />

It worked!

Answer 4

Here are a few things you can try. You try variations of this to see if it fixes the view ratio. Description

imageView.setScaleType(ScaleType.FIT_CENTER);

or possibly manually setting the ImageView size manually will help.

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(bitmapWidth, bitmapHeight);
image.setLayoutParams(layoutParams);

If not, there are a few other ways, these were just the first that came to mind.

Answer 5

Im not quite sure, but I think its the type of dialog you are showing that adds the padding. This type of dialog does not hide the entire activity. What I use to hide the entire activity is:

/**
 * Show the overlay using the WindowManager class.
 * @param overlay The overlay that needs to be shown.
 */
public void showOverlay(View overlay) {
    WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.MATCH_PARENT,
            WindowManager.LayoutParams.MATCH_PARENT,
            WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
                    WindowManager.LayoutParams.FLAG_FULLSCREEN,
            PixelFormat.TRANSLUCENT);

    getWindowManager().addView(overlay, params);
}

You could probably find an option that does what you need. However you will need to create a layout containing the buttons and image should you want to use the above method.

Check the options out: http://developer.android.com/reference/android/view/WindowManager.LayoutParams.html

Answer 6

I ended up figuring out a way to solve this issue. Because manually changing the height of the ImageView removes the extra padding, I ended up finding the dimensions of the original image, and apply them to the ImageView once the ImageView dimensions can be calculated. Here is the final result:

This is the final working code:

AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setPositiveButton("Get Pro", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
            }
        }).setNegativeButton("No thanks", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
            }
        });
        final AlertDialog dialog = builder.create();
        LayoutInflater inflater = getLayoutInflater();
        View dialogLayout = inflater.inflate(R.layout.go_pro_dialog_layout, null);
        dialog.setView(dialogLayout);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

        dialog.show();

        dialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface d) {
                ImageView image = (ImageView) dialog.findViewById(R.id.goProDialogImage);
                Bitmap icon = BitmapFactory.decodeResource(context.getResources(),
                        R.drawable.whygoprodialogimage);
                float imageWidthInPX = (float)image.getWidth();

                LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(Math.round(imageWidthInPX),
                        Math.round(imageWidthInPX * (float)icon.getHeight() / (float)icon.getWidth()));
                image.setLayoutParams(layoutParams);


            }
        });

And the XML:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/goProDialogImage"
        android:layout_width="wrap_content"
        android:layout_height="350dp"
        android:src="@drawable/whygoprodialogimage"/>

</LinearLayout>