我的应用程序到目前为止工作正常，但是当我收到信息并解析它时（基本上是在完成aysnctask时）我做了一个httprequest应用程序关闭。 log cat显示没有错误，所以我不知道发生了什么。我在另一个应用程序中使用了相同的代码，但没有出现此问题。什么是关于什么的想法？
AysncTask片段：
private class GetFreeWeek extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(LogIn.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String freeWeek = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + freeWeek);
if (freeWeek != null) {
try {
JSONObject jsonObj = new JSONObject(freeWeek);
JSONArray champs = jsonObj.getJSONArray("champions");
for (int i=0; i < champs.length(); i++)
{
try {
JSONObject champion = champs.getJSONObject(i);
long champId = champion.getLong(TAG_ID);
// Pulling items from the array
} catch (JSONException e) {
// Oops
}
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
if (pDialog.isShowing())
pDialog.dismiss();
}
}
logcat的：
09-04 00:34:59.481: W/dalvikvm(21169): No implementation found for native Ldalvik/system/VMRuntime;.pauseGc:(Ljava/lang/String;)I
09-04 00:34:59.481: E/ActivityThread(21169): Pause GC
09-04 00:34:59.481: E/ActivityThread(21169): java.lang.reflect.InvocationTargetException
09-04 00:34:59.481: E/ActivityThread(21169): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 00:34:59.481: E/ActivityThread(21169): at java.lang.reflect.Method.invoke(Method.java:515)
09-04 00:34:59.481: E/ActivityThread(21169): at android.app.ActivityThread.pauseGC(ActivityThread.java:5525)
09-04 00:34:59.481: E/ActivityThread(21169): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2324)
09-04 00:34:59.481: E/ActivityThread(21169): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2471)
09-04 00:34:59.481: E/ActivityThread(21169): at android.app.ActivityThread.access$900(ActivityThread.java:175)
09-04 00:34:59.481: E/ActivityThread(21169): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308)
09-04 00:34:59.481: E/ActivityThread(21169): at android.os.Handler.dispatchMessage(Handler.java:102)
09-04 00:34:59.481: E/ActivityThread(21169): at android.os.Looper.loop(Looper.java:146)
09-04 00:34:59.481: E/ActivityThread(21169): at android.app.ActivityThread.main(ActivityThread.java:5602)
09-04 00:34:59.481: E/ActivityThread(21169): at java.lang.reflect.Method.invokeNative(Native Method)
09-04 00:34:59.481: E/ActivityThread(21169): at java.lang.reflect.Method.invoke(Method.java:515)
09-04 00:34:59.481: E/ActivityThread(21169): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
09-04 00:34:59.481: E/ActivityThread(21169): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
09-04 00:34:59.481: E/ActivityThread(21169): at dalvik.system.NativeStart.main(Native Method)
09-04 00:34:59.481: E/ActivityThread(21169): Caused by: java.lang.UnsatisfiedLinkError: Native method not found: dalvik.system.VMRuntime.pauseGc:(Ljava/lang/String;)I
09-04 00:34:59.481: E/ActivityThread(21169): at dalvik.system.VMRuntime.pauseGc(Native Method)
09-04 00:34:59.481: E/ActivityThread(21169): ... 15 more
09-04 00:34:59.501: I/PersonaManager(21169): getPersonaService() name persona_policy
09-04 00:34:59.566: I/PersonaManager(21169): getPersonaService() name persona_policy
09-04 00:34:59.611: I/PersonaManager(21169): getPersonaService() name persona_policy
09-04 00:34:59.756: D/dalvikvm(21169): GC_FOR_ALLOC freed 161K, 7% free 8554K/9184K, paused 17ms, total 17ms
09-04 00:34:59.761: I/dalvikvm-heap(21169): Grow heap (frag case) to 9.882MB for 1127536-byte allocation
09-04 00:34:59.786: D/dalvikvm(21169): GC_FOR_ALLOC freed 3K, 7% free 9651K/10288K, paused 27ms, total 27ms
09-04 00:35:00.051: D/libEGL(21169): loaded /system/lib/egl/libEGL_mali.so
09-04 00:35:00.056: D/libEGL(21169): loaded /system/lib/egl/libGLESv1_CM_mali.so
09-04 00:35:00.061: D/libEGL(21169): loaded /system/lib/egl/libGLESv2_mali.so
09-04 00:35:00.066: E/(21169): Device driver API match
09-04 00:35:00.066: E/(21169): Device driver API version: 23
09-04 00:35:00.066: E/(21169): User space API version: 23
09-04 00:35:00.066: E/(21169): mali: REVISION=Linux-r3p2-01rel3 BUILD_DATE=Fri Mar 21 13:52:50 KST 2014
09-04 00:35:00.121: D/OpenGLRenderer(21169): Enabling debug mode 0
09-04 00:35:00.141: D/dalvikvm(21169): GC_FOR_ALLOC freed 249K, 7% free 9916K/10632K, paused 16ms, total 16ms
09-04 00:35:00.141: D/ProgressBar(21169): updateDrawableBounds: left = 0
09-04 00:35:00.141: D/ProgressBar(21169): updateDrawableBounds: top = 0
09-04 00:35:00.141: D/ProgressBar(21169): updateDrawableBounds: right = 96
09-04 00:35:00.141: D/ProgressBar(21169): updateDrawableBounds: bottom = 96
09-04 00:35:00.861: D/Response:(21169): > Cant show you my response ;)
答案 0 :(得分：0)
//你可以在收到信息后用onPostExecute（）方法完成App，活动并用AnycTask解析
private class GetFreeWeek extends AsyncTask<Void, Void, Void> {
public static Context context;
public GetFreeWeek(Context cont) {
context = cont;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
if (pDialog.isShowing())
pDialog.dismiss();
//finished Activity after AsyncTask data
((Activity) context).finish();
}
}