Start/stop button in Android

Question

Such a simple thing (hence username) but I just want a start/stop button, it's for a timer but for simplicity we'll go by "starty" and "stoppy" instead of a timer running and a timer not running. I don't want to ask for you to do my code, but if anyone could tell me what I'm missing I'd really love that.

Thanks! :)

public void onClick(View v) {
            if (helloWorld.getText().length() == 0
                    || helloWorld.equals("stoppy")) {
                helloWorld.setText("starty");
            } else {
                helloWorld.setText("stoppy");
            }
        }

Answer 1

我认为这可能是一个问题。.添加像helloWorld.getText（）。trim.equals（“ stoppy”）来匹配两个字符串

Answer 2

use like that

public void onClick(View v) {
            if (helloWorld.getText().trim().length() == 0
                    || helloWorld.getText().trim().equals("stoppy")) {
                helloWorld.setText("starty");
            } else {
                helloWorld.setText("stoppy");
            }
        }