この例外はどのようにすればよいですか?
ターゲット sdkVersion を 13 に変更した後、この問題が発生します。何が悪かったのか？
これは、広告を読み込もうとした後の logcat の出力です。
02-04 12:51:23.910: E/AndroidRuntime(7379): FATAL EXCEPTION: main
02-04 12:51:23.910: E/AndroidRuntime(7379): android.os.NetworkOnMainThreadException
02-04 12:51:23.910: E/AndroidRuntime(7379): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
02-04 12:51:23.910: E/AndroidRuntime(7379): at java.net.InetAddress.lookupHostByName(InetAddress.java:391)
02-04 12:51:23.910: E/AndroidRuntime(7379): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
02-04 12:51:23.910: E/AndroidRuntime(7379): at java.net.InetAddress.getAllByName(InetAddress.java:220)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:71)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:460)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:432)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80)
02-04 12:51:23.910: E/AndroidRuntime(7379): at libcore.net.http.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:164)
02-04 12:51:23.910: E/AndroidRuntime(7379): at com.sfa.coverflow.ImageLoader.DisplayAdvert(ImageLoader.java:93)
02-04 12:51:23.910: E/AndroidRuntime(7379): at com.sfa.coverflow.MainActivity$LoadAdvert.onPostExecute(MainActivity.java:869)
02-04 12:51:23.910: E/AndroidRuntime(7379): at com.sfa.coverflow.MainActivity$LoadAdvert.onPostExecute(MainActivity.java:1)
02-04 12:51:23.910: E/AndroidRuntime(7379): at android.os.AsyncTask.finish(AsyncTask.java:602)
02-04 12:51:23.910: E/AndroidRuntime(7379): at android.os.AsyncTask.access$600(AsyncTask.java:156)
02-04 12:51:23.910: E/AndroidRuntime(7379): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615)
02-04 12:51:23.910: E/AndroidRuntime(7379): at android.os.Handler.dispatchMessage(Handler.java:99)
02-04 12:51:23.910: E/AndroidRuntime(7379): at android.os.Looper.loop(Looper.java:137)
02-04 12:51:23.910: E/AndroidRuntime(7379): at android.app.ActivityThread.main(ActivityThread.java:4446)
02-04 12:51:23.910: E/AndroidRuntime(7379): at java.lang.reflect.Method.invokeNative(Native Method)
02-04 12:51:23.910: E/AndroidRuntime(7379): at java.lang.reflect.Method.invoke(Method.java:511)
02-04 12:51:23.910: E/AndroidRuntime(7379): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
02-04 12:51:23.910: E/AndroidRuntime(7379): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
02-04 12:51:23.910: E/AndroidRuntime(7379): at dalvik.system.NativeStart.main(Native Method)
これは私の DisplayAdvert メソッドです:
int advert_id = R.drawable.loader;
public void DisplayAdvert(String image_url, int loader, ImageView image) {
// TODO Auto-generated method stub
advert_id = loader;
imageViews.put(image, image_url);
try {
URL url = new URL(image_url);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
if(myBitmap!=null)
image.setImageBitmap(myBitmap);
else
{
queuePhoto(image_url, image);
image.setImageResource(loader);
}
} catch (IOException e) {
e.printStackTrace();
}
}
これは私の LoadAdvert メソッドです:
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAdvert extends AsyncTask<String, String, String> {
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_advertisement, "GET", params);
// Check your log cat for JSON reponse
Log.d("Advert: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// ADVERT FOUND
// RETRIEVE ADVENT URL
advert = json.getJSONArray(TAG_PHOTOS);
for (int i = 0; i < advert.length(); i++) {
JSONObject c = advert.getJSONObject(i);
// STORE EACH JSON ITEM IN VARIABLE
banner_url = c.getString(TAG_BANNER_IMAGE);
banner_url = banner_url.toString();
Log.d("banner URL", banner_url);
advert_url = c.getString(TAG_ADVERT_URL);
advert_url = advert_url.toString();
Log.d("advert URL", advert_url);
}
}
else {
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// Loader image - will be shown before loading image
int loader = R.drawable.loader;
// Imageview to show
ImageView image = (ImageView) findViewById(R.id.img_advert);
// Image url
String imageUrl = banner_url;
// ImageLoader class instance
ImageLoader imgLoader = new ImageLoader(getApplicationContext());
// whenever you want to load an image from url
// call DisplayImage function
// url - image url to load
// loader - loader image, will be displayed before getting image
// image - ImageView
imgLoader.DisplayAdvert(imageUrl, loader, image);
}
}
}