在类和方法之间传递字符串

Question

I've been trying to pass a string from a method in one class to a method in another class, but can't seem to do it.

I've been trying a couple of things like

String location = Latitude + "," + Longitude;
AccelOrientExample GPSstring = new AccelOrientExample();
GPSstring.onSensorChanged(location);

where location is the string I want to pass to the class AccelOrientExample, where I have a method with a arguement for location.

Please help, thanks

Cannot instantiate the type AccelOrientExample is the first error I get which is on the new side. And The method onSensorChanged(SensorEvent) in the type SensorEventListener is not applicable for the arguments (String) on the second line.

public void onSensorChanged(SensorEvent sensorEvent, String location)

Is the method in the AccelOrientExample

Answer 1

Cannot instantiate the type AccelOrientExample is the first error I get which is on the new side.

I think your AccelOrientExample is an Abstract class. you cant instantiate your Abstract class with new operator. you will have to let your subclass(concrete class) to initialize it.

like lets assume AccelOrientedExampleImpl is the subclass of AccelOrientedExample class.

then ,

           AccelOrientExample GPSstring  = new AccelOrientedExampleImpl(); 

The method onSensorChanged(SensorEvent) in the type SensorEventListener is not applicable for the arguments (String) on the second line.

your method signature takes two arguments, SensorEvent instance and a String.

public void onSensorChanged(SensorEvent sensorEvent, String location)

you are trying to pass only String instance.you have to pass both as your method expects two arguments. do something like below, i am assuming the SensorEvent is a concrete class.

String location = Latitude + "," + Longitude;
AccelOrientExample GPSstring = new AccelOrientExample();
GPSstring.onSensorChanged(new SensorEvent(), location);