我正在处理通知,我必须使用setLatestEventInfo
.但是,Android Studio显示以下错误消息:
无法解析方法setLatestEventinfo
这是我的代码片段:
private void createNotification(Context context, String registrationID) {
NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(R.drawable.icon,"Registration Successfull",System.currentTimeMillis());
notification.flags |= Notification.FLAG_AUTO_CANCEL;
Intent intent = new Intent(context,RegistrationResultActivity.class);
intent.putExtra("registration_ID",registrationID);
PendingIntent pendingIntent = PendingIntent.getActivity(context,0,intent,0);
notification.setLatestEventInfo(context,"Registration","Successfully Registered",pendingIntent);
}
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或者,如果他们是另一种方式,请善意地告诉我.
我在这里面临某种许可问题。我可以使用 读取文件cat
,使用 对其进行更改,nano
但由于某种原因,jq
存在权限问题。这是我面临的:
msp@coolpad:~/projects/lol$ jq .name lol.json
jq: error: Could not open file lol.json: Permission denied
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在检查权限时,这就是我得到的:
msp@coolpad:~/projects/lol$ ls -l
total 4
-rw-rw-r-- 1 msp msp 0 Sep 27 04:04 lol-domains.txt
-rwxrwxrwx 1 msp msp 593 Sep 27 04:38 lol.json
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如您所见,我已尝试授予它777
权限,但它仍然显示Permission denied
. 我知道设置777
权限不是一个好主意,我完全打算664
在问题解决后将其改回。Anyhelp会appriciated。
更新 1:我尝试重新安装jq
,snap
但仍然无法解决问题。
更新 2:输出cat lol.json
msp@coolpad:~$ cat lol.json
{"name":"lol"}
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更新 3:输出echo '{"name":"lol"}' | jq …
我是c ++的新手,目前在使用时遇到错误strcmp
.
我已经定义了如下结构:
struct student
{
string name;
int roll;
float marks;
dob dobi;
string dobp;
};
student *p;
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然后,我将指针传递给函数以对其进行排序,如下所示:
void sortData(student *p)
{
int a=0,b=0;
for (a=0; a<=arraySize; a++)
{
for (b=a; b<=arraySize; b++)
{
if( strcmp(p[a].name, p[b].name) > 0 ) //Error
{
//sort logic yet to be implemented
}
}
}
}
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有人可以指出错误.
错误信息:
呼叫没有匹配功能
strcmp
我正在尝试在 的帮助下同时发送 POST 请求concurrent.futures
。由于某种原因,我无法设置自定义标头。我想设置
Authorization
Content-type
这是我到目前为止所取得的进展。
import asyncio
import concurrent.futures
import requests
from urllib.parse import urlencode, quote_plus
params = urlencode({'a': 'b', 'c': 'd', 'e': 'f'})
headers = {"Content-type": "application/x-www-form-urlencoded","Accept": "*/*","Authorization": "Bearer kdjalskdjalskd"}
async def main():
with concurrent.futures.ThreadPoolExecutor(max_workers=20) as executor:
loop = asyncio.get_event_loop()
futures = [
loop.run_in_executor(
executor,
requests.post,
'https://fac03c95.ngrok.io',params, headers)
for i in range(20)
]
for response in await asyncio.gather(*futures):
print(response.text)
pass
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
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但由于某种原因,标头似乎没有显示在请求中。有人可以帮我从这里出去吗?
提前致谢 :)
我刚开始学习c ++而且我被困在这里.我做了一个结构
...
struct student{
string name;
int roll;
};
...
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然后,我在全球范围内称呼它.student s1[20];
在我的主要功能中,我做了类似的事情
...
int count=0;
student *p;
p=s1;
cout<<"Enter the Number of records, you wish to consider.";
cin>>arraySize;
p = new student[arraySize];
while (count!=arraySize) {
cout<<"Enter name.";
cin>>*(p+count)->name; //Error comes over here
}
...
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我得到的错误信息是Indirection requires pointer operand
.有人可以帮我解决这个问题吗?
我是C++的新手,我学习了一些C语言的基础知识.这是我的代码片段.
#include "iostream"
using namespace std;
int main(){
int a=108;
if(!isdigit(a)){
cout<<"The number is not a digit";
}
else
cout<<"It's a Number!";
}
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我不知道为什么,但它满足条件.它应该输出,It's a Number!
请纠正我,如果你有更好的解决方案,建议!(为了更清楚)我想检查输入的int是否实际上由数字组成.谢谢
我试图从window.open访问解析的URL的URL.我知道这可能听起来很愚蠢,但我想在用户执行一些操作后获取URL的值.
这是我一直在玩的代码片段,
function myFunction() {
var myWindow = window.open("http://google.com", "MsgWindow", "width=200,height=100");
document.getElementById("demo").innerHTML =
"The full URL of this page is:<br>" + myWindow.location.href;
}
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<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
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我试图在Activity中膨胀片段,这是代码.
public class DetailActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container2, new DetailFragment())
.commit(); //Line with Error
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.detail, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up …
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