的onActivityResult（）

问题描述

我有code应该让我从计算器采取价值，进一步使用它：

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.
            }
        }
    });

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

不过，这并不喜欢这些三行：

But it doesn't like these three lines:

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

如果我删除 @覆盖变得更好，但它仍然显示了一个错误

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

super.onActivityResult(requestCode, resultCode, data);

这是怎么回事错在这里？

What is going wrong in here?

推荐答案

您不能覆盖​​的onActivityResult 在 OnClickListener ，因为它不会在基类存在。移动你的的onActivityResult code，以便它是你的活动里面类，而不是 OnClickListner 。

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.

这篇关于的onActivityResult（）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！