9

The actionBar icon should like imageenter image description here

When the device resolution is 1920x1080 and android 4.2 above, the icon size looks very small: imageenter image description here

(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:

  1. create bigger icon image (ex.170x60) then put into drawable-hdpi(xhdpi, xxhdpi...etc.) folder

  2. use menu.findItem(R.id.menu_buyer).setIcon(resizeImage(int resId, int w, int h)); to resize icon

  3. 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?

Improve this question

2 Answers 2

Reset to default
9

Too late to answer but, I found the answer

It's quite simple. First, convert drawable into a bitmap, resize it and re-convert into drawable. Then get the item of the menu and set the icon as the new drawable.

Please add this re-size method on your activity as follow.

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; }
Improve this answer
Sign up to request clarification or add additional context in comments.

1 Comment

It's working great. Thanks! (Android 8.1 Oreo). However I would recommend you store the bitmap locally to avoid calling this method on every activity which uses the actionbar
0

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

Improve this answer

Comments

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.