我试图将doInBackground方法中的intent传递给MainActivity的内部LocationListent中的onLocationchanged方法。我正面临appp不断重启的问题，然后冻结，设备重启。
路线varibale具有这些值[7,31]。
该应用程序没有意图正常工作（添加的代码我记得//喜欢这个//）
我感谢任何帮助。
错误：
05-17 21:19:12.553: E/ActivityThread(19497): Performing stop of activity that is not resumed: {com.bustracker/com.bustracker.MainActivity}
05-17 21:19:12.553: E/ActivityThread(19497): java.lang.RuntimeException: Performing stop of activity that is not resumed: {com.bustracker/com.bustracker.MainActivity}
05-17 21:19:12.553: E/ActivityThread(19497): at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3822)
05-17 21:19:12.553: E/ActivityThread(19497): at android.app.ActivityThread.handleStopActivity(ActivityThread.java:3910)
05-17 21:19:12.553: E/ActivityThread(19497): at android.app.ActivityThread.access$1200(ActivityThread.java:177)
05-17 21:19:12.553: E/ActivityThread(19497): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
05-17 21:19:12.553: E/ActivityThread(19497): at android.os.Handler.dispatchMessage(Handler.java:102)
05-17 21:19:12.553: E/ActivityThread(19497): at android.os.Looper.loop(Looper.java:145)
05-17 21:19:12.553: E/ActivityThread(19497): at android.app.ActivityThread.main(ActivityThread.java:5944)
05-17 21:19:12.553: E/ActivityThread(19497): at java.lang.reflect.Method.invoke(Native Method)
05-17 21:19:12.553: E/ActivityThread(19497): at java.lang.reflect.Method.invoke(Method.java:372)
05-17 21:19:12.553: E/ActivityThread(19497): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1389)
05-17 21:19:12.553: E/ActivityThread(19497): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184)
MainActivity：
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
//I added "this" here//.
LocationListener ll = new myLocationListener(this);
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 0, ll);
}
//Inner class in MainActivity
class myLocationListener implements LocationListener {
// I added here the bContext and the constructor//
final Context bContext;
public myLocationListener(Context context){
bContext = context;
}
@Override
public void onLocationChanged(Location location) {
PostData sender = new PostData();
// I added here the context parameter.//
sender.post_data(jSONString, bContext);
//I added here this part to receive the intent from onPostExecute //
Bundle extra = getIntent().getExtras();
if (extras != null) {
ArrayList<Integer> c = extras
.getIntegerArrayList("stop_route");
for (int item : c) {
System.out.println("The Intent is not empty: "
+ item);
}
}
protected void onResume() {
super.onResume();
}
@Override
protected void onPause() {
super.onPause();
}
}
OnLocationChanged中的一些输出：
05-17 21:24:04.969: I/System.out(19497): The Intent is not empty: 7
05-17 21:24:04.969: I/System.out(19497): The Intent is not empty: 31
。 。 。我在一个输出中获得了超过30行？
PostData类：
public class PostData {
String jSONString;
// Context mContext;
public PostData() {
super();
}
public String getjSONString() {
return jSONString;
}
public void setjSONString(String jSONString) {
this.jSONString = jSONString;
}
public void post_data(String jSONString, Context context) {
this.jSONString = jSONString;
new MyAsyncTask(context).execute(jSONString);
}
class MyAsyncTask extends AsyncTask<String, Integer, Void> {
final Context mContext;
ArrayList<Integer> routes = new ArrayList<Integer>();
public MyAsyncTask(Context context) {
mContext = context;
}
@Override
protected Void doInBackground(String... params) {
// TODO Auto-generated method stub
BufferedReader reader = null;
try {
System.out.println("The output of : doInBackground "
+ params[0]);
URL myUrl = new URL(
"https://blabla.rhcloud.com/test");
HttpURLConnection conn = (HttpURLConnection) myUrl
.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setConnectTimeout(10000);
conn.setReadTimeout(10000);
conn.setRequestProperty("Content-Type", "application/json");
conn.connect();
// System.out.println("The output of getResponsecode: "
// + conn.getResponseCode());
// create data output stream
DataOutputStream wr = new DataOutputStream(
conn.getOutputStream());
// write to the output stream from the string
wr.writeBytes(params[0]);
wr.close();
StringBuilder sb = new StringBuilder();
reader = new BufferedReader(new InputStreamReader(
conn.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
Gson gson = new Gson();
StopsJSON data = gson.fromJson(sb.toString(), StopsJSON.class);
routes = data.getRoutes();
System.out.println("The output of the StringBulder before "
+ routes);
System.out.println("The output of the StringBulder: "
+ sb.toString());
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
if (reader != null) {
try {
reader.close();
return null;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// Intent with Conetxt of the Asyntask class and
Intent intent = new Intent(mContext, MainActivity.class);
intent.putExtra("stop_route", routes);
mContext.startActivity(intent);
}
}
}
答案 0 :(得分：1)
我认为主要的问题是你正在创造一个循环。 您的MainActivity开始了。并且onCreate你实例化你的LocationManager，它可能会立即启动，调用你的AsyncTask结束并再次启动你的MainActivity。
其余的是一个假设。 如果你只允许在你的应用程序中存在一个MainActivity实例，那么当你再次启动MainActivity时，我假设，在调用onResume之前调用当前存在的MainActivity的onStop。