The actionBar icon should like image
When the device resolution is 1920x1080 and android 4.2 above, the icon size looks very small: image
(android 4.1 is correct)
My problem seems like i-want-to-change-actionbar-icon-size.
The icon image size is 113x40, then I use getActionBar().getHeight() to get ActionBar height is 56.
menu.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@+id/menu_buyer" android:icon="@drawable/buyer_bts" android:showAsAction="ifRoom"/> <item android:id="@+id/menu_exhibition_bt" android:icon="@drawable/exhibition_bt" android:showAsAction="ifRoom"/> <item android:id="@+id/menu_oj" android:icon="@drawable/download_bt" android:showAsAction="ifRoom"/>
I tried following method but doesn't work:
create bigger icon image (ex.170x60) then put into drawable-hdpi(xhdpi, xxhdpi...etc.) folder
use menu.findItem(R.id.menu_buyer).setIcon(resizeImage(int resId, int w, int h)); to resize icon
added a style < item name="android:actionBarSize" > 200dp < /item > in style.xml then set theme in Manifest file
Is there a way can show the icon correctly?
Too late to answer but, I found the answer
the way was quite simple. 1st, convert drawable into bitmap, resize it and re-convert into drawable and get the item of menu and set the icon as the new drawable.
add your Activity these re-size method,
private Bitmap resizeBitmapImageFn( Bitmap bmpSource, int maxResolution){ int iWidth = bmpSource.getWidth(); int iHeight = bmpSource.getHeight(); int newWidth = iWidth ; int newHeight = iHeight ; float rate = 0.0f; if(iWidth > iHeight ){ if(maxResolution < iWidth ){ rate = maxResolution / (float) iWidth ; newHeight = (int) (iHeight * rate); newWidth = maxResolution; } }else{ if(maxResolution < iHeight ){ rate = maxResolution / (float) iHeight ; newWidth = (int) (iWidth * rate); newHeight = maxResolution; } } return Bitmap.createScaledBitmap( bmpSource, newWidth, newHeight, true); }
and add the work in the onCreateOptionsMenu
@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); Bitmap icon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_navigation_drawer); //Converting drawable into bitmap Bitmap new_icon = resizeBitmapImageFn(icon, 50); //resizing the bitmap Drawable d = new BitmapDrawable(getResources(),new_icon); //Converting bitmap into drawable menu.getItem(0).setIcon(d); //choose the item number you want to set return true; }
Please keep maintaining image with sizes and resolution . Like:
- drawable-ldpi (it need resolution or ppi is ~120)(keep small size image) - drawable-mdpi (it need resolution or ppi is ~160)(keep normal size image) - drawable-hdpi (it need resolution or ppi is ~240)(keep larger size image) - drawable-xhdpi (it need resolution or ppi is ~320)(keep xlarger size image)
You can also study this reference link http://developer.android.com/guide/practices/screens_support.html
