首先是一个自定义控件：
public class RushBuyCountDownTimerView extends LinearLayout { // 小时，十位 private TextView tv_hour_decade; // 小时，个位 private TextView tv_hour_unit; // 分钟，十位 private TextView tv_min_decade; // 分钟，个位 private TextView tv_min_unit; // 秒，十位 private TextView tv_sec_decade; // 秒，个位 private TextView tv_sec_unit; private Context context; private int hour_decade; private int hour_unit; private int min_decade; private int min_unit; private int sec_decade; private int sec_unit; // 计时器 private Timer timer; private Handler handler = new Handler() { public void handleMessage(Message msg) { countDown(); } ; }; public RushBuyCountDownTimerView(Context context, AttributeSet attrs) { super(context, attrs); this.context = context; LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); View view = inflater.inflate(R.layout.view_countdowntimer, this); tv_hour_decade = (TextView) view.findViewById(R.id.tv_hour_decade); tv_hour_unit = (TextView) view.findViewById(R.id.tv_hour_unit); tv_min_decade = (TextView) view.findViewById(R.id.tv_min_decade); tv_min_unit = (TextView) view.findViewById(R.id.tv_min_unit); tv_sec_decade = (TextView) view.findViewById(R.id.tv_sec_decade); tv_sec_unit = (TextView) view.findViewById(R.id.tv_sec_unit); } /** * @param * @return void * @throws * @Description: 开始计时 */ public void start() { if (timer == null) { timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { handler.sendEmptyMessage(0); } }, 0, 1000); } } /** * @param * @return void * @throws * @Description: 停止计时 */ public void stop() { if (timer != null) { timer.cancel(); timer = null; tv_hour_decade.setText(0 + ""); tv_hour_unit.setText(0 + ""); tv_min_decade.setText(0 + ""); tv_min_unit.setText(0 + ""); tv_sec_decade.setText(0 + ""); tv_sec_unit.setText(0 + ""); } } /** * @param * @return void * @throws Exception * @throws * @Description: 设置倒计时的时长 */ public void setTime(String hour, String min, String sec) { int Hour = Integer.parseInt(hour); int Min = Integer.parseInt(min); int Second = Integer.parseInt(sec); if (Hour >= 120 || Min >= 60 || Second >= 60 || Hour < 0 || Min < 0 || Second < 0) { throw new RuntimeException("error:check your time"); } hour_decade = Hour / 10; hour_unit = Hour - hour_decade * 10; min_decade = Min / 10; min_unit = Min - min_decade * 10; sec_decade = Second / 10; sec_unit = Second - sec_decade * 10; tv_hour_decade.setText(hour_decade + ""); tv_hour_unit.setText(hour_unit + ""); tv_min_decade.setText(min_decade + ""); tv_min_unit.setText(min_unit + ""); tv_sec_decade.setText(sec_decade + ""); tv_sec_unit.setText(sec_unit + ""); } /** * @param * @return boolean * @throws * @Description: 倒计时 */ private void countDown() { if (isCarry4Unit(tv_sec_unit)) { if (isCarry4Decade(tv_sec_decade)) { if (isCarry4Unit(tv_min_unit)) { if (isCarry4Decade(tv_min_decade)) { if (isCarry4Unit(tv_hour_unit)) { if (isCarry4Decade(tv_hour_decade)) { // ToastUtil.safeShowToast(TLApplication.mContext, "Time limited"); stop(); } } } } } } } /** * @param * @return boolean * @throws * @Description: 变化十位，并判断是否需要进位 */ private boolean isCarry4Decade(TextView tv) { int time = Integer.valueOf(tv.getText().toString()); time = time - 1; if (time < 0) { time = 5; tv.setText(time + ""); return true; } else { tv.setText(time + ""); return false; } } /** * @param * @return boolean * @throws * @Description: 变化个位，并判断是否需要进位 */ private boolean isCarry4Unit(TextView tv) { int time = Integer.valueOf(tv.getText().toString()); time = time - 1; if (time < 0) { time = 9; tv.setText(time + ""); return true; } else { tv.setText(time + ""); return false; } } }
view_countdowntimer.xml:
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#FF0000" android:padding="5dp"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:text="倒计时：" android:textColor="#FFFFFF" /> <TextView android:id="@+id/tv_hour_decade" style="@style/RushBuyCountDownTimerViewStyle" /> <TextView android:id="@+id/tv_hour_unit" style="@style/RushBuyCountDownTimerViewStyle" android:layout_marginLeft="1dp" /> <TextView android:layout_width="wrap_content" android:layout_height="match_parent" android:gravity="center" android:text="时" android:textColor="#FFFFFF" android:textSize="16sp" /> <TextView android:id="@+id/tv_min_decade" style="@style/RushBuyCountDownTimerViewStyle" /> <TextView android:id="@+id/tv_min_unit" style="@style/RushBuyCountDownTimerViewStyle" android:layout_marginLeft="1dp" /> <TextView android:layout_width="wrap_content" android:layout_height="match_parent" android:gravity="center" android:text="分" android:textColor="#FFFFFF" android:textSize="16sp" /> <TextView android:id="@+id/tv_sec_decade" style="@style/RushBuyCountDownTimerViewStyle" /> <TextView android:id="@+id/tv_sec_unit" style="@style/RushBuyCountDownTimerViewStyle" android:layout_marginLeft="1dp" /> <TextView android:layout_width="wrap_content" android:layout_height="match_parent" android:gravity="center" android:text="秒" android:textColor="#FFFFFF" android:textSize="16sp" /> </LinearLayout> </FrameLayout>
RushBuyCountDownTimerViewStyle:
<style name="RushBuyCountDownTimerViewStyle">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:gravity">center</item>
<item name="android:text">0</item>
<item name="android:textColor">#FFFFFF</item>
<item name="android:textSize">16sp</item>
可能用到的时间格式转换工具：
/** 将格林威治时间格式转为指定的时间格式 */ public static String GTMToLocal(String GTMDate) { int tIndex = GTMDate.indexOf("T"); String dateTemp = GTMDate.substring(0, tIndex); String timeTemp = GTMDate.substring(tIndex + 1, GTMDate.length() - 6); String convertString = dateTemp + " " + timeTemp; SimpleDateFormat format; format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.ENGLISH); Date result_date; long result_time = 0; if (null == GTMDate) { return GTMDate; } else { try { format.setTimeZone(TimeZone.getTimeZone("GMT00:00")); result_date = format.parse(convertString); result_time = result_date.getTime(); format.setTimeZone(TimeZone.getDefault()); return format.format(result_time); } catch (Exception e) { e.printStackTrace(); } } return GTMDate; }
设置倒计时：
String startTime = StringUtil.GTMToLocal("2015-12-28T12:49:13.45425+08:00"); String endTime = StringUtil.GTMToLocal("2015-12-31T00:17:13.45425+08:00"); DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try { Date d1 = df.parse(startTime); Date d2 = df.parse(endTime); long diff = d2.getTime() - d1.getTime(); // mslong days = diff / (1000 * 60 * 60 * 24); long hours = (diff - days * (1000 * 60 * 60 * 24)) / (1000 * 60 * 60); long minutes = (diff - days * (1000 * 60 * 60 * 24) - hours * (1000 * 60 * 60)) / (1000 * 60); long second = (diff / 1000 - days * 24 * 60 * 60 - hours * 60 * 60 - minutes * 60); hours += days * 24;
// RushBuyCountDownTimerView timerView; 需要初始化timerView
timerView.setTime(hours + "", minutes + "", second + ""); timerView.start(); } catch (Exception e) { e.printStackTrace(); }