Android笔记

1.设置textView的hint的字体大小

1

SpannableString   spannableString = new SpannableString(getString(R.string.hint_email_addr));
AbsoluteSizeSpan sizeSpan = new AbsoluteSizeSpan(12,true);
spannableString.setSpan(sizeSpan,0,spannableString.length(),Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
mUserEdt.setHint(new SpannedString(spannableString));

 2.直接在xml中更改

<string name="hint_password_again"><font size="12">Change hint size</font></string>. 

 2.使用BottomNavigationView底部Item点击的时候位移

     BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
         //防止item多的时候点击有位移
     BottomNavigationViewHelper.disableShiftMode(navigation);