如果有人能告诉我我的代码有什么问题，我无法使用 AsyncTask 和 doinbackground 方法： 它只会给我几行html代码，然后出现错误：
public class ApiWeather extends AsyncTask<String,Void,String>{
@Override
protected String doInBackground(String... urls) {
String res="";
URL url;
HttpURLConnection httpURLConnection=null;
try {
url=new URL(urls[0]);
httpURLConnection=(HttpURLConnection)url.openConnection();
InputStream inputStream=httpURLConnection.getInputStream();
InputStreamReader inputStreamReader=new
InputStreamReader(inputStream);
int Data=inputStreamReader.read();
while (Data!= -1){
char characters=(char)Data;
res+=characters;
Data=inputStreamReader.read();
}
return res;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ApiWeather Task=new ApiWeather();
String myres="";
try {
myres=Task.execute("http://www.posh24.se/kandisar").get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
Log.i("web content : ", myres);
}
}
这是下载一堆线后出现的错误：
06/26 19:19:50: Launching app
$ adb install-multiple -r -t -p com.example.luck.practiceproj E:\androidapps\practiceproj\app\build\intermediates\split-apk\debug\slices\slice_8.apk
Split APKs installed
$ adb shell am start -n "com.example.luck.practiceproj/com.example.luck.practiceproj.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet..Waiting for process to come online
Connected to process 6563 on device emulator-5554
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/ck.practicepro: The ClassLoaderContext is a special shared library.
W/ck.practicepro: JIT profile information will not be recorded: profile file does not exits.
I/chatty: uid=10084(com.example.luck.practiceproj) identical 10 lines
W/ck.practicepro: JIT profile information will not be recorded: profile file does not exits.
I/InstantRun: starting instant run server: is main process
W/ck.practicepro: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (light greylist, reflection)
W/ck.practicepro: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (light greylist, reflection)
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
I/ck.practicepro: Waiting for a blocking GC ProfileSaver
I/ck.practicepro: WaitForGcToComplete blocked ProfileSaver on AddRemoveAppImageSpace for 20.162ms
I/web content :: <!DOCTYPE html>
<html>
<head>
<title>Topp 100 Kändisar - Posh24</title>
<base href="/"/>
<meta charset="ut-8"></meta>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
<meta name="robots" content="index,follow"></meta>
<meta name="viewport" content="width=device-width, initial-scale=1.0"></meta>
<meta name="apple-mobile-web-app-title" content="Posh24"></meta>
<meta name="google-site-verification" content="5cYwmuFA8gRoL9MJB9nmvs0F8XT0pSFj6ZhYy8RWkF4"></meta>
<meta name="description" content="Lista över topp 100 kändisar just nu! Vi listar de hetaste och mest omskrivna kändisar just nu med nyheter, bilder och videos."></meta>
<link rel="apple-touch-icon" href="/apple-touch-icon.png"></link>
<link rel="shortcut icon" href="/favicon.ico"></link>
<link rel="canonical" href="http://www.posh24.se/kandisar"></link>
<link rel="alternate" type="application/rss+xml" href="/feed" title="Kändis och nöjesnyheter från Posh24"></link>
<link href="//fonts.googleapis.com/css?family=Open+Sans:400,400italic,700,700italic" rel="stylesheet" type="text/css"/>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<link href="css/news.css?p24v=54" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script type="text/javascript" src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script type="text/javascript" src="scripts/news-min.js?p24v=54"></script>
<script type="text/javascript" src="//posh24se.disqus.com/embed.js"></script>
<script type="text/javascript">
$(document).ready(function(){
if(typeof(framework)!=='undefined') {
framework.onPageLoad({"layout":"viewsite","unique":"54","uniquePrefix":"p24v="});
}
});
</script>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-xs-12">
<div id="webx_header_1"><nav class="navbar navbar-inverse menu" data-x-onload="menuCtrl.init">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="headerCenter" href="/">
<div class="logo"></div>
</a>
</div>
<div class="collapse navbar-collapse" id="myNavbar">
<ul class="nav navbar-nav">
<li><a class="menuItem" href="/kandisar">Kändisar</a></li>
<li><a class="menuItem" href="/nyheter">Senaste nytt</a></li>
<li><a class="menuItem" href="/hant_i_sverige">Hänt i Sverige</a></li>
<li><a class="menuItem" href="/svenska_kandisar">Svenska kändisar</a></li>
<li class="visible-xs hidden-sm hidden-md hidden-lg"><a class="menuItem" href="/video">Video</a></li>
<li class="visible-xs hidden-sm hidden-md hidden-lg"><a class="menuItem" href="/street_style">Street Style</a></li>
</ul>
<ul class="nav navbar-nav pull-right hidden-xs visible-sm visible-md visible-lg">
<li class="dropdown">
<a href="#" dropdown-toggle class="x-skip dropdown-toggle" data-toggle="dropdown">
<div class="toggle-icon"></div>
</a>
<ul class="dropdown-menu">
<li><a class="menuItem" href="/video">Video</a></li>
<li><a class="menuItem" href="/street_style">Street Style</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
</div>
</div>
</div>
<div class="row">
<div class="col-xs-12" id="banner_top">
</div>
</div>
<div class="row">
<div class="col-xs-12 col-sm-6 col-md-8">
<div id="webx_center">
<div class="articleContainer contentBlock ">
<h1 class="header">Topp 100 kändisar</h1>
<div class="channelList">
<div class="channels_nav">
<div class="title">Lista:</div>
<d
D/OpenGLRenderer: Skia GL Pipeline
D/: HostConnection::get() New Host Connection established 0xe50ffb00, tid 6589
I/ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasHDRDisplay
retrieved: 0
I/OpenGLRenderer: Initialized EGL, version 1.4
D/OpenGLRenderer: Swap behavior 1
W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED,
retrying without...
D/OpenGLRenderer: Swap behavior 0
D/EGL_emulation: eglCreateContext: 0xe8d83000: maj 3 min 1 rcv 4
D/EGL_emulation: eglMakeCurrent: 0xe8d83000: ver 3 1 (tinfo 0xece31c00)
E/eglCodecCommon: glUtilsParamSize: unknow param 0x000082da
glUtilsParamSize: unknow param 0x000082da
D/EGL_emulation: eglMakeCurrent: 0xe8d83000: ver 3 1 (tinfo 0xece31c00)
我尝试了硬件和软件图形
答案 0 :(得分：1)
在我看来，LogCat会截断日志消息的输出，因为其中塞满了太多HTML。错误日志记录在您看来与您的问题无关，因此我认为您的下载实际上是成功的。