为什么差异LayoutInflater会导致差异SearchView图标

Question

Hello every Android geek, i has using LayoutInflater to customer My Android ActionBar.

but i found that difference LayoutInflater will cause generate difference SearchView Icon

This is my Difference LayoutInflater and capture image

LayoutInflater mInflater1 =(LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//You can change mInflater1 =LayoutInflater.from(this); is a same result

LayoutInflater mInflater2 =LayoutInflater.from(getApplicationContext());

My Question is Why difference LayoutInflater cause difference SearchView Icon ?

Answer 1

The problem is that in the second example (which I believe correlates to the first picture), you are using an Application Context to inflate Views instead of an Activity Context.

The framework does a lot of work to ensure that an Activity's Context is correctly configured with the correct screen density, theme, and other such information. An Application is not expected to ever need to worry about displaying content, so it is not configured to do so.

Do not use an Application context to inflate Views or obtain resources. Use an Activity context.

Answer 2

Well its that the context determines from where(theme) the icons are created. I guess your OS and the app has different themes Read more here http://developer.android.com/reference/android/view/LayoutInflater.html

The Context in which this LayoutInflater will create its Views; most importantly, this supplies the theme from which the default values for their attributes are retrieved.