我一直在尝试使图像看起来模糊,但是当鼠标悬停在鼠标上时,它会清除光标指向的那一点。与www.canva.com网站非常相似。
到目前为止,这是我的代码,它不能100%工作。我正在使用HTML,CSS和Javascript。不幸的是,我是javascript新手!
HTML:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>QuoteWall</title>
<link rel="stylesheet" type="text/css" href="style.css">
<link rel="stylesheet" type="text/javascript" href="javascript.js">
</head>
<body>
<div class="pic">
<svg class="blur" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="100%">
<image filter="url(#filter2)" xlink:href="image.png" width="100%" height="100%"></image>
<filter id="filter2">
<feGaussianBlur stdDeviation="5" />
</filter>
<mask id="mask1">
<circle cx="-50%" cy="-50%" r="30" fill="white" filter="url(#filter2)" />
</mask>
<image xlink:href="image.png" width="100%" height="100%" mask="url(#mask1)"></image>
</svg>
</div>
</div>
</body>
</html>
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CSS:
body {
margin: 0;
}
.pic {
text-align: center;
position: relative;
height: 250px;
}
.blur {
height: 100%; …Run Code Online (Sandbox Code Playgroud) 我正在尝试从我的firebase数据库中检索数据并在ListView中的TextViews中显示它.但是,我在这一行上遇到了"缺少构造函数"的异常:Clients clients = clientsSnapshot.getValue(Clients.class);.
不知道如何解决它.我在firebase或android开发方面都不是很有经验,所以任何帮助都会非常感激.干杯啦!
public class ViewProfile extends AppCompatActivity{
ListView listviewClients;
List<Clients> clientsList;
DatabaseReference databaseClients;
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_profile);
listviewClients = (ListView) findViewById(R.id.listviewClients);
databaseClients = FirebaseDatabase.getInstance().getReference("clients");
clientsList = new ArrayList<>();
}
@Override
protected void onStart() {
super.onStart();
databaseClients.addValueEventListener (new ValueEventListener() {
@Override
public void onDataChange(com.google.firebase.database.DataSnapshot dataSnapshot) {
clientsList.clear();
for (com.google.firebase.database.DataSnapshot clientsSnapshot : dataSnapshot.getChildren()) {
Clients clients = clientsSnapshot.getValue(Clients.class);
clientsList.add(clients);
}
ClientsList adapter = new ClientsList(ViewProfile.this, clientsList);
listviewClients.setAdapter(adapter);
}
@Override
public void onCancelled(DatabaseError databaseError) { …Run Code Online (Sandbox Code Playgroud)