CODEWITHSUNDEEP
androidfloating-pointdouble
Archie.bpgc
Archie.bpgc

Reputation: 24012

Expected Float but value was a java.lang.Double

Activity_A:

Intent intent = new Intent(Activity_A.this,
                            Activity_B.class);
intent.putExtra("user_lat",
                    getSharedPreferences(
                    Activity_C.USER_PREFS, 0).getFloat(
                    "lat", 0));
Log.d("lat from prefs = ",
            getSharedPreferences(Activity_C.USER_PREFS, 0)
            .getFloat("lat", 0));
intent.putExtra("lng",
                    getSharedPreferences(
                    Activity_C.USER_PREFS, 0).getFloat(
                    "user_lng", 0));
Log.d("lng from prefs = ",
            getSharedPreferences(Activity_C.USER_PREFS, 0)
            .getFloat("lng", 0)");

The Logcat shows:

12-01 12:36:53.409: D/lat from prefs =(554): 18.599348

12-01 12:36:53.409: D/lng from prefs =(554): 73.7625

and Activity_B:

    try {

        MyLat = this.getIntent().getDoubleExtra("user_lat", 0);
        MyLng = this.getIntent().getDoubleExtra("user_lng", 0);
    } catch (Exception e) {

        Log.e("Exception in getting user lat and lng as Double",
                e.toString());
    }
    if (MyLat == 0.0 || MyLng == 0.0) {

        try {

            MyLat = this.getIntent().getFloatExtra("user_lat", 0);
            MyLng = this.getIntent().getFloatExtra("user_lng", 0);
        } catch (Exception e) {

            Log.e("Exception in getting user lat and lng as Float",
                    e.toString());
        }
    }

    Log.d("MyLat and MyLng", MyLat + "+" + MyLng);

and LogCat:

12-01 12:36:57.168: D/MyLat and MyLng(554): 18.599348068237305+0.0

and the LogCat error:

12-01 12:36:57.138: W/Bundle(554): Key user_lat expected Double but value was a java.lang.Float.  The default value 0.0 was returned.
12-01 12:36:57.159: W/Bundle(554): Attempt to cast generated internal exception:
12-01 12:36:57.159: W/Bundle(554): java.lang.ClassCastException: java.lang.Float
12-01 12:36:57.159: W/Bundle(554):  at android.os.Bundle.getDouble(Bundle.java:1017)
12-01 12:36:57.159: W/Bundle(554):  at android.content.Intent.getDoubleExtra(Intent.java:3377)
12-01 12:36:57.159: W/Bundle(554):  at com.wicfy.mobileapp.MapMarkerActivity.onCreate(MapMarkerActivity.java:60)
12-01 12:36:57.159: W/Bundle(554):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-01 12:36:57.159: W/Bundle(554):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-01 12:36:57.159: W/Bundle(554):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-01 12:36:57.159: W/Bundle(554):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-01 12:36:57.159: W/Bundle(554):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-01 12:36:57.159: W/Bundle(554):  at android.os.Handler.dispatchMessage(Handler.java:99)
12-01 12:36:57.159: W/Bundle(554):  at android.os.Looper.loop(Looper.java:130)
12-01 12:36:57.159: W/Bundle(554):  at android.app.ActivityThread.main(ActivityThread.java:3683)
12-01 12:36:57.159: W/Bundle(554):  at java.lang.reflect.Method.invokeNative(Native Method)
12-01 12:36:57.159: W/Bundle(554):  at java.lang.reflect.Method.invoke(Method.java:507)
12-01 12:36:57.159: W/Bundle(554):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-01 12:36:57.159: W/Bundle(554):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-01 12:36:57.159: W/Bundle(554):  at dalvik.system.NativeStart.main(Native Method)

I thought, since i am taking user_lat as a double in Activity_B, i must cast it to double during intent.putExtra

but then i get this in LogCat:

12-01 12:36:57.168: D/MyLat and MyLng(554): 0.0+0.0

12-01 12:07:50.218: W/Bundle(498): Key user_lat expected Float but value was a java.lang.Double.  The default value 0.0 was returned.
12-01 12:07:50.249: W/Bundle(498): Attempt to cast generated internal exception:
12-01 12:07:50.249: W/Bundle(498): java.lang.ClassCastException: java.lang.Double
12-01 12:07:50.249: W/Bundle(498):  at android.os.Bundle.getFloat(Bundle.java:984)
12-01 12:07:50.249: W/Bundle(498):  at android.content.Intent.getFloatExtra(Intent.java:3360)
12-01 12:07:50.249: W/Bundle(498):  at com.wicfy.mobileapp.MapMarkerActivity.onCreate(MapMarkerActivity.java:71)
12-01 12:07:50.249: W/Bundle(498):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-01 12:07:50.249: W/Bundle(498):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-01 12:07:50.249: W/Bundle(498):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-01 12:07:50.249: W/Bundle(498):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-01 12:07:50.249: W/Bundle(498):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-01 12:07:50.249: W/Bundle(498):  at android.os.Handler.dispatchMessage(Handler.java:99)
12-01 12:07:50.249: W/Bundle(498):  at android.os.Looper.loop(Looper.java:130)
12-01 12:07:50.249: W/Bundle(498):  at android.app.ActivityThread.main(ActivityThread.java:3683)
12-01 12:07:50.249: W/Bundle(498):  at java.lang.reflect.Method.invokeNative(Native Method)
12-01 12:07:50.249: W/Bundle(498):  at java.lang.reflect.Method.invoke(Method.java:507)
12-01 12:07:50.249: W/Bundle(498):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-01 12:07:50.249: W/Bundle(498):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-01 12:07:50.249: W/Bundle(498):  at dalvik.system.NativeStart.main(Native Method)

I get none of the Log.e message. May be because its an Internal Exception and doesn't cause a crash.

So, how can i get the actual values which i am sending throught intent from Activity_A in Activity_B

Thank You

Upvotes: 0

Views: 2631

Answers (2)

Sam
Sam

Reputation: 86958

Since the value is already stored in a SharedPreferences file, it seems the simplest answer is to not use the Intent.

In Activity B use:

float myLat = getSharedPreferences(Activity_C.USER_PREFS, 0).getFloat("lat", 0);
// Read the Longitude in the same way

You are trying to work with Doubles from a Location object (I assume) however SharedPreferences don't work with Doubles. You might be safer converting the Doubles to Strings and back. This way you don't gain or lose any precision going to and from Floats.

Upvotes: 2

Egor
Egor

Reputation: 40218

While for primitives you can cast double to a float (with loss of precision) and float to a double (with no warnings), in case of Float and Double this won't work. So every time you put a Float into a Bundle you must be sure it's a Float and not a Double. Hope this helps.

Upvotes: 2

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