OnActivityResult ()

问题

I have code which should allow me to take value from calculator and use it further:

//-----------------This section creates the keypad functionality
for (int o = 0; o < keybuttons.length; o++) {
    final int n = o;
    keybuttons[o] = (Button) findViewById(data.keyIds[n]);
    keybuttons[o].setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            try {
                String tmp = texts[selectEdit].getText()
                    .toString();
                switch (n) {
                case 3:
                    texts[selectEdit].setText(tmp.substring(0, tmp.length() - 1));
                    break; //get cursor position and delete char
                case 7:
                    {
                        // Create intent for RealCalc.
                        Intent intent2 = new Intent("uk.co.quarticsoftware.REALCALC");
                        double x = 0; // Set initial value (double).
                        if (!texts[selectEdit].getText()
                            .toString()
                            .equals("")) {
                            x = Double.valueOf(texts[selectEdit].getText()
                                .toString());
                        }
                        intent2.putExtra("X", x);
                        // Launch calculator
                        try {
                            startActivityForResult(intent2, 0);
                        } catch (ActivityNotFoundException e) {
                            Intent intent = new Intent(Intent.ACTION_VIEW,
                            Uri.parse("market://details?id=uk.co.nickfines.RealCalc"));
                            try {
                                startActivity(intent);
                            } catch (ActivityNotFoundException f) {
                                // Google Play Store app not available.
                            }
                        }
                        break;
                    } //open Calculator
                case 11:
                    {
                        if (!tmp.contains("E")) texts[selectEdit].setText(tmp + "" + keybuttons[n].getText());
                        break;
                    } //check for E if dont have do default case
                case 15:
                    {
                        TL.setVisibility(View.GONE);
                        break;
                    } //simulate back button
                default:
                    {
                        texts[selectEdit].setText(tmp + "" + keybuttons[n].getText());
                        //get cursor start and end and get entire String
                        // replace selected String with button text
                        //insert back
                        break;
                    }
                } //end of switch
            } //end of try
            catch (ActivityNotFoundException e) {
                Intent intent = new Intent(Intent.ACTION_VIEW,
                Uri.parse("market://details?id=uk.co.nickfines.RealCalc"));
                // Calculator not installed
            } //calculator.num=n;
            catch (Exception e) {
                StringWriter sw = new StringWriter();
                e.printStackTrace(new PrintWriter(sw));
                EasyPhysActivity.error = sw.toString();
            }
        }

        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            super.onActivityResult(requestCode, resultCode, data);
            if (resultCode == Activity.RESULT_OK) {
                // User pressed OK.
                double value = data.getDoubleExtra("X", Double.NaN);
                if (Double.isNaN(value)) {
                    // Calculation result was "Error".
                } else {
                    // Calculation result ok.
                }
            } else {
                // User pressed cancel or back button.
            }
        }
    });

}
//----------------------------------------

But it doesn't like these three lines:

@Override
protected void onActivityResult (int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

If I delete @Override it becomes better, but it still shows an error for

super.onActivityResult(requestCode, resultCode, data);

What is going wrong in here?

回答1:

You cannot override onActivityResult inside OnClickListener because it does not exist in the base class. Move your onActivityResult code so that it is inside your Activity class, not the OnClickListner.

来源：https://stackoverflow.com/questions/14783758/onactivityresult