android - How to select the image with selected layer on it -

-

how add layer image when selected normal gallery i.e,

1.when select image(long click on image activate selectable mode) there blue layer on indicates image selected

2.when deselect image again(click on image) appears normal image

can please suggest how can achieve enter image description here


Comments

Post a Comment

Popular posts from this blog

qml - Is it possible to implement SystemTrayIcon functionality in Qt Quick application -

-
i writing qtquick desktop application. use both c++ (for functionality) , qml (for ui) in it. use qquickview show interface written in qml. i want application reside in system tray when minimised. i mean functionality similar example. http://qt-project.org/doc/qt-4.8/desktop-systray.html . trying implement feature not find way in qt quick application. here main.cpp code: #include <qguiapplication> #include <qqmlengine> #include <qqmlcontext> #include <qqmlfileselector> #include <qquickview> #include "myapp.h" int main(int argc, char* argv[]) { qguiapplication app(argc,argv); app.setapplicationname(qfileinfo(app.applicationfilepath()).basename()); qdir::setcurrent(qapp->applicationdirpath()); myapp myappobject; qquickview view; view.connect(view.engine(), signal(quit()), &app, slot(quit())); view.rootcontext()->setcontextproperty("myappobject", &myappobject); new qqmlfilese...
Read more

double exclamation marks in haskell -

-
i have code: ghci>let listoffuns = map (*) [0..] ghci>(listoffuns !! 4) 5 20 what !! mean? i saw example double exclamation this: ghci> [1,2,3,4]!!1 ghci> 2 but seems don't apply question example. how understand function. need explanations. !! indexes lists. takes list , index, , returns item @ index. if index out of bounds, returns ⊥.
Read more

javascript - How to get D3 Tree link text to transition smoothly? -

-
visualization goal: build d3 tree has text at, both, nodes , links, , transitions cleanly, when nodes selected/deselected. problem: while can link text, called "predicates," show along centroid of link paths, can't seem them transition in , out "smoothly." question: can please me please me clean code , better understand how tree "link" transitions behaving understand theory behind code? visualization , source location: http://bl.ocks.org/guerino1/raw/ed80661daf8e5fa89b85/ the existing code looks follows... var linktextitems = vis.selectall("g.linktext") .data(tree.links(nodes), function(d) { return d.target.id; }) var linktextenter = linktextitems.enter().append("svg:g") .attr("class", "linktext") .attr("transform", function(d) { return "translate(" + (d.target.y + 20) + "," + (getcenterx(d)) + ")"; }); // add predicate text each link path li...
Read more