在 android java 中导入.class 文件

Question

is there any other way to import another Java class from the same package in android?

I'm trying to import store.class to SMSreceiver.class in SMSreceiver.class, i type in this code, store storingKey = new store();

but still cannot call the methods in store.class

this will be my store.class coding.

public class store extends Activity{
    public store(){

    }

     public void saveToFile(String filename, String sms) throws NoSuchAlgorithmException, InvalidKeySpecException, IOException{
            OutputStreamWriter out = new OutputStreamWriter(openFileOutput(filename, Context.MODE_APPEND));
            out.write(sms);
            out.close();            
    }

is there any problem with my coding?

any help?

Rob, this is my another class

public class storePubKey extends BroadcastReceiver
{
    Activity ac = new Activity();
    store sk = new store();
    public void onReceive(Context context, Intent intent)
{
    //---get the SMS message passed in---
    Bundle bundle = intent.getExtras();        
    SmsMessage[] msgs = null;
    String str = "";            
    if (bundle != null)
    {
        try{
        //---retrieve the SMS message received---
        Object[] pdus = (Object[]) bundle.get("pdus");
        msgs = new SmsMessage[pdus.length];            
        for (int i=0; i<msgs.length; i++){
            msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);                
            str = msgs[i].getMessageBody().toString();
            Toast.makeText(context, "f", Toast.LENGTH_SHORT).show();
            sk.saveToFile("public.key", str);
            Toast.makeText(context,("public.keyasd"), Toast.LENGTH_SHORT).show();

        }
        }catch(Exception e){}

        }
        //---display the new SMS message---
        try {
            //Toast.makeText(context,str, Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
}   

}

Answer 1

EDIT: Try this

To call a non-static method in another class, you need a reference to that class.

store storeRef = new store(); // create new instance and set reference
storeRef.saveToFile(); // call the method

If you already have a reference to that class, you don't need to create it. A reference can be passed in a method call:

public void calledMethod(store storeRef) {
storeRef.saveToFile();

UPDATE

Change storeKey sk = new storeKey(); to store sk = new store();

Since store is your original class name, not storeKey.

You also may need to declare that withing the method you are trying to use it in.