我不确定为什么会收到此错误,五分之二的我使用模拟器设置壁纸时,收到错误 -
“在附加的堆栈跟踪中获取了资源,但从未释放。有关避免资源泄漏的信息,请参阅 java.io.Closeable。”
当我使用手机设置壁纸时,效果非常好,没有任何故障。为什么我使用模拟器时会崩溃?
这是我的代码:
public class SetWallpaperAsync extends AsyncTask<String, String, String> {
private Context context;
private ProgressDialog pDialog;
String image_url;
URL mImageUrl;
String myFileUrl1;
Bitmap bmImg = null;
public SetWallpaperAsync(Context context) {
this.context = context;
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pDialog = new ProgressDialog(context);
pDialog.setMessage("Setting Wallpaper...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
try {
mImageUrl = new URL(args[0]);
// myFileUrl1 = args[0];
HttpURLConnection conn = (HttpURLConnection) mImageUrl
.openConnection();
conn.setDoInput(true);
conn.connect();
InputStream is = conn.getInputStream();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Config.RGB_565;
Bitmap bmImag = BitmapFactory.decodeStream(is, null, options);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String args) {
// TODO Auto-generated method stub
WallpaperManager wpm = WallpaperManager.getInstance(context);
try {
wpm.setBitmap(bmImg);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
pDialog.dismiss();
}
}
LOG Cat:
11-09 15:09:11.726: E/StrictMode(1632): A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
11-09 15:09:11.726: E/StrictMode(1632): java.lang.Throwable: Explicit termination method 'end' not called
11-09 15:09:11.726: E/StrictMode(1632): at dalvik.system.CloseGuard.open(CloseGuard.java:184)
11-09 15:09:11.726: E/StrictMode(1632): at java.util.zip.Inflater.<init>(Inflater.java:82)
11-09 15:09:11.726: E/StrictMode(1632): at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:96)
11-09 15:09:11.726: E/StrictMode(1632): at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:81)
11-09 15:09:11.726: E/StrictMode(1632): at libcore.net.http.HttpEngine.initContentStream(HttpEngine.java:528)
11-09 15:09:11.726: E/StrictMode(1632): at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:836)
11-09 15:09:11.726: E/StrictMode(1632): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:274)
11-09 15:09:11.726: E/StrictMode(1632): at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:486)
11-09 15:09:11.726: E/StrictMode(1632): at com.google.ads.internal.f.b(SourceFile:490)
11-09 15:09:11.726: E/StrictMode(1632): at com.google.ads.internal.f.run(SourceFile:460)
11-09 15:09:11.726: E/StrictMode(1632): at java.lang.Thread.run(Thread.java:856)
模拟器默认启用 StrictMode,在真实设备上可以通过以下方式在代码中打开它:
StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder().detectAll().penaltyLog()
.penaltyDeath().build());
您遇到的崩溃表明您需要手动关闭打开的 Web 资源,以便它们可以释放内存,请参阅此示例安卓文档: http://developer.android.com/reference/java/net/HttpURLConnection.html
URL url = new URL("http://www.android.com/");
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
try {
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
readStream(in);
finally {
urlConnection.disconnect();
}
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