我有這種形式的一個按鈕時提交我檢索雅虎財經API庫存信息,並用它來顯示到3個textviewsretriving股票報價與雅虎財經
我使用url http://download.finance.yahoo.com/d/quotes.csv?s=goog&f=sl1p2
和我的按鈕事件處理程序是
URL url;
try {
url = new URL("http://download.finance.yahoo.com/d/quotes.csv?s=goog&f=sl1p2");
InputStream stream = url.openStream();
BufferedInputStream bis = new BufferedInputStream(stream);
ByteArrayBuffer bab = new ByteArrayBuffer(50);
int current = 0;
while((current = bis.read()) != -1){
bab.append((byte) current);
}
String stockTxt = new String(bab.toByteArray());
String[] tokens = stockTxt.split(",");
String stockSymbol = tokens[0];
String stockPrice = tokens[1];
String stockChange = tokens[2];
String fstockSymbol = stockSymbol.substring(1, stockSymbol.length() -1);
String fstockChange = stockChange.substring(1, stockChange.length()-3);
symbolOut.setText(fstockSymbol);
priceOut.setText(stockPrice);
changeOut.setText(fstockChange);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
因此,我注意到,直到第一線似乎是沒有問題的,即URL =新的網址...,(即使是通過瀏覽器完成的裸HTTP請求,並返回信息我需要)
和我的清單條目看起來像
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
下面
是logcat的輸出
05-02 18:36:32.804: D/AndroidRuntime(902): Shutting down VM 05-02 18:36:32.804: W/dalvikvm(902): threadid=1: thread exiting with uncaught exception (group=0x409c01f8) 05-02 18:36:33.113: E/AndroidRuntime(902): FATAL EXCEPTION: main 05-02 18:36:33.113: E/AndroidRuntime(902): android.os.NetworkOnMainThreadException 05-02 18:36:33.113: E/AndroidRuntime(902): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099) 05-02 18:36:33.113: E/AndroidRuntime(902): at java.net.InetAddress.lookupHostByName(InetAddress.java:391) 05-02 18:36:33.113: E/AndroidRuntime(902): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242) 05-02 18:36:33.113: E/AndroidRuntime(902): at java.net.InetAddress.getAllByName(InetAddress.java:220) 05-02 18:36:33.113: E/AndroidRuntime(902): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:71)
所以任何人都知道在哪裏我去錯了
你在UI線程上做IO的東西嗎?你的代碼不完整。這是第一個猜測。 – 2013-05-02 13:19:45
重複:http://stackoverflow.com/questions/6343166/android-os-networkonmainthreadexception – laalto 2013-05-02 13:26:38
@大衛即時只是顯示在3 textviews,這是嵌入在一個單一的活動,我是一個全新的android,隊友UI線程?它來自火星:( – 2013-05-02 13:27:45