Question

在我的应用程序中，我试图从Android设备传感器获取数据，然后尝试将它们存储在一个文件中。我已经能够从传感器检索数据并在EditText中成功输出，但我无法从EditText连续获取数据。虽然循环在这里显然没有用处。并且线程会创建一个字符串“entry”的副本，但我需要它在外面，所以我试图使用一个可调用但不确定我是否正确。建议做同样的事情。

这是我想要做的。

btn_start.setOnClickListener(new Button.OnClickListener() {
        @Override
        public void onClick(View view) {
            Callable callable = new Callable() {
                @Override
                public Object call() throws Exception {
                    while(!btn_stop.isPressed()) {
                        entry += acc_x.getText().toString() + "," +
                                acc_y.getText().toString() + "," +
                                acc_z.getText().toString() + "," +
                                gyro_x.getText().toString() + "," +
                                gyro_y.getText().toString() + "," +
                                gyro_z.getText().toString() + "," +
                                user_name.getText().toString() + "\n";
                    }
                    return entry;
                }
            };

            ExecutorService executorService = Executors.newFixedThreadPool(2);
            Future<String> stringFuture = executorService.submit(callable);
            try {
                entry = stringFuture.get();
            } catch (InterruptedException e) {
                e.printStackTrace();
            } catch (ExecutionException e) {
                e.printStackTrace();
            }
        }
    });

如果您需要更多参考，

Here是完整的代码。

Answer 1

如果你想从EditText连续获取数据。

editText.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
//save it to file here or what ever you want
    }

    @Override
    public void afterTextChanged(Editable s) {}
});

如何从android中的Edit Text连续获取值

1 个答案: