Question

我在我的应用程序中显示警报框以启用GPS，应用程序第一次正常工作但第二次崩溃，然后第三次正常工作和第四次崩溃，依此类推。崩溃时显示错误＆＃34;您的活动是否正在运行？＆＃34;。我尝试使用处理程序和单独的UI线程，但没有成功。我正在尝试这个。

public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  ExceptionHandler.register(this, WebServiceIface.BASE_URL
    + "/exception/log");
  instanceState = savedInstanceState;
  appStatus = AppStatus.getInstance(this);
  appStatus.mFromQrCode = false;
  mhandler = new Handler();
  appPreferences = PreferenceManager.getDefaultSharedPreferences(this);
  isFromLogin = getIntent().getBooleanExtra("LOGIN_FLAG", false);
  isOnPause = false;
  listenForLocation();
  loginIfNeeded();
 }

 private void listenForLocation() {
  gps = GpsLocator.getGpsLocator(this);
  gps.listen();
 }

 @Override
 protected void onResume() {
  super.onResume();  
  gps.destroyGpsDialog();
  listenForLocation();
  compareTimes();
  isResuming = true;
  isOnPause = false;
  isFromRefresh=true;
 }

我正在通过GpsLocator活动调用警告框

public void createGpsDialog(){

      final AlertDialog.Builder builder = new AlertDialog.Builder(context);
         builder.setMessage("Yout GPS seems to be disabled, do you want to enable it?").setCancelable(true)
            .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                public void onClick(final DialogInterface dialog, final int id) {
                 dialog.dismiss();
                    context.startActivityForResult(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS),6186);


                }
            })
            .setNegativeButton("No", new DialogInterface.OnClickListener() {
                public void onClick(final DialogInterface dialog, final int id) {
                     dialog.dismiss();
                }
            });
         alert = builder.create();
         alert.show();
    }

仅在第二次崩溃时非常奇怪

修改..

 private GpsLocator(CheckinNativeActivity context) {
        this.context = context;
        this.observers = new ArrayList<GpsFragment>();
        this.removalList = new ArrayList<GpsFragment>();
    }

    public static GpsLocator getGpsLocator(CheckinNativeActivity cxt) {
        if (ref == null)
            ref = new GpsLocator(cxt);
        return ref;
    }

Answer 1

在任何情况下，检查上下文是否通过，在您的情况下检查上下文是否在调用活动意图时传递给GPsLocator活动

Answer 2

尝试使用context.getApplicationContext（）代替上下文........

Using Application context everywhere?

显示警报Box以启用GPS时Android应用程序崩溃

2 个答案: