1. mian.xml

2. 12 小时

TimePicker timePicker=(TimePicker)findViewById(R.id.timePicker1);        //获取对象        timePicker.setCurrentHour(8);                                    //设置小时        timePicker.setCurrentMinute(12);                                //设置分钟

3. 24 小时

TimePicker timePicker=(TimePicker)findViewById(R.id.timePicker1);        //获取对象        timePicker.setCurrentHour(15);                                    //设置小时        timePicker.setCurrentMinute(12);                                //设置分钟        timePicker.setIs24HourView(true);                                //设置24小时制显示

4.显示时间

TimePicker timePicker=(TimePicker)findViewById(R.id.timePicker1);        timePicker.setCurrentHour(15);        timePicker.setCurrentMinute(12);        timePicker.setIs24HourView(true);        timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {                        @Override            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {                // TODO Auto-generated method stub                Toast.makeText(getApplicationContext(), "当前时间为："+hourOfDay+"点"+minute+"分",                        Toast.LENGTH_LONG).show();                    //显示时间信息            }        });

5.判断是否是24小时制 根据结果进行显示

main.xml

firstActivity

Button bt1=(Button)findViewById(R.id.button1);                            //获取按钮对象        final TimePicker timePicker=(TimePicker)findViewById(R.id.timePicker1);        //获取TimePicker对象        timePicker.setCurrentHour(15);                                        //设置小时        timePicker.setCurrentMinute(12);                                    //设置分钟        bt1.setOnClickListener(new View.OnClickListener() {                        //设置按钮监听器                        @Override            public void onClick(View v) {                // TODO Auto-generated method stub                int hour,minite;                boolean is24v;                hour=timePicker.getCurrentHour();                            //获取显示小时                minite=timePicker.getCurrentMinute();                        //获取显示分钟                is24v=timePicker.is24HourView();                            //获取是否为24小时制                if(is24v)                                                //24小时制的情况                {                    Toast.makeText(getApplicationContext(), "当前时间为："+hour+"小时"+minite+"分钟",                        Toast.LENGTH_LONG).show();                    //显示时间信息                }                else                                                    //上午/下午模式                {                    if (hour<12)                    {                     Toast.makeText(getApplicationContext(), "当前时间为：上午"+hour+"小时"+minite+"分钟",                                Toast.LENGTH_LONG).show();            //显示时间信息                    }                    else                    {                     Toast.makeText(getApplicationContext(),"当前时间为：下午"+(hour-12)+"小时"+minite+"分钟",                                Toast.LENGTH_LONG).show();            //显示时间信息                    }                }            }        });