Android-Solutions

Solution: You can force the android to close the virtual keyboard. hideSoftInputFromWindow function to close the virtual keyboard Code: View myview = this . getCurrentFocus (); if (myview != null ) { InputMethodManager inm = ( InputMethodManager ) getSystemService ( Context . INPUT_METHOD_SERVICE ); inm . hideSoftInputFromWindow ( view . getWindowToken (), 0 ); }

Solution:   If you had a linear layout with two children then change all the child color without know their id. Code : for ( int i = 0 ; i < yourlayout . getChildCount (); i ++) { View v = layout . getChildAt ( i ); v . setBackgroundColor ( /* color you want*/ ); } }

The project was working Fine. But suddenly it throws the following error. app\build . gradle Error : Error : Failed to resolve : com . android . support : support - annotations : 27.0 . 1 Install Repository and sync project Error : Error : Failed to resolve : com . android . support : appcompat - v7 : 27.0 . 1 Install Repository and sync project Error : Error : Failed to resolve : com . android . support : customtabs : 27.0 . 1 Install Repository and sync project Error : Error : Failed to resolve : com . android . support : cardview - v7 : 27.0 . 1 Install Repository and sync project Error : Error : Failed to resolve : com . android . support : support - v4 : 27.0 . 1 Install Repository and sync project Error : Error : Failed to resolve : com . android . support : support - core - utils : 27.0 . 1 Install Repository and sync project Reason: It suddenly shows error because of Facebook has updated the SDK and removed suppor...