如何使用 TimePicker 在特定时间关闭应用程序

Question

我正在开发一个应用程序，我想为用户提供使用时间选择器在选定时间自动关闭应用程序的选项。我知道我必须使用警报管理器，但我不知道如何与 timepicker 结合并用它关闭应用程序

             @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_contadorpro);


    timePicker = (TimePicker) findViewById(R.id.timePicker);
    button = (Button)findViewById(R.id.button);
    button.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            Toast.makeText(getApplicationContext(), "Contador Activado", Toast.LENGTH_LONG).show();
            timePicker.clearFocus();
            final Calendar _calendar = Calendar.getInstance();
            final int hour = timePicker.getCurrentHour();
            final int minute = timePicker.getCurrentMinute();

            Thread _thread = new Thread() {

                @Override
                public void run() {

                    try {

                        Calendar _calendar = Calendar.getInstance();
                        int _currentHour = _calendar.get(Calendar.HOUR);
                        int _currentMinute = _calendar.get(Calendar.MINUTE);

                        if(_currentHour == hour && _currentMinute == minute){

                            System.exit(0);

                        }

                    } catch (Exception e) {

                        e.printStackTrace();

                    }

                }

            };

            _thread.start();

        }
    });



}   

}

Answer 1

您可以使用

获取时间

int hour = timePicker.getCurrentHour();
int minute = timePicker.getCurrentMinute();

然后你必须创建一个线程来检查当前时间和来自TimePicker的时间。

当时，您必须使用 System.exit(0); 或 finish() 您的活动关闭应用程序

重新编辑：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_contadorpro);

    timePicker = (TimePicker) findViewById(R.id.timePicker);
    button = (Button)findViewById(R.id.button);

    final Thread _thread = new Thread() {

        @Override
        public void run() {

            try {

                boolean _stopThread = true;

                while (_stopThread) {

                    Calendar _calendar = Calendar.getInstance();

                    int _currentHour = _calendar.get(Calendar.HOUR);
                    int _currentMinute = _calendar.get(Calendar.MINUTE);

                    int hour = timePicker.getCurrentHour();
                    int minute = timePicker.getCurrentMinute();

                    if (_currentHour == hour && _currentMinute == minute) {

                        _stopThread = false;

                        System.exit(0);

                    }

                }

            } catch (Exception e) {

                e.printStackTrace();

            }

        }

    };

    button.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            // I edited here
            if(!_thread.isAlive()) {

                _thread.start();

                Toast.makeText(getApplicationContext(), "Contador Activado", Toast.LENGTH_LONG).show();

            }

        }
    });

}