Android实现淘宝倒计时功能

package com.cqxxny.myapplication; import android.annotation.SuppressLint;import android.content.Context;import android.os.Handler;import android.os.Message;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.LinearLayout;import android.widget.TextView;import android.widget.Toast; import java.util.Timer;import java.util.TimerTask;/** * 功 能: 倒计时工具类 * 所属模块: * 创建时间: 2018/11/15 * 功能描述: */@SuppressLint("HandlerLeak")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.time, 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);  }  /** * * @Description: 开始计时 * @param * @return void * @throws */ public void start() {  if (timer == null) { timer = new Timer(); timer.schedule(new TimerTask() {  @Override public void run() {  handler.sendEmptyMessage(0); } }, 0, 1000); } }  /** * * @Description: 停止计时 * @param * @return void * @throws */ public void stop() { if (timer != null) { timer.cancel(); timer = null; } }  /** * @throws Exception * * @Description: 设置倒计时的时长 * @param * @return void * @throws */ public void setTime(int hour, int min, int sec) {  if (hour >= 60 || min >= 60 || sec >= 60 || hour < 0 || min < 0 || sec < 0) { throw new RuntimeException("Time format is error,please check out your code"); }  hour_decade = hour / 10; hour_unit = hour - hour_decade * 10;  min_decade = min / 10; min_unit = min - min_decade * 10;  sec_decade = sec / 10; sec_unit = sec - 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 + "");  }  /** * * @Description: 倒计时 * @param * @return boolean * @throws */ 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)) {  Toast.makeText(context, "时间到了",   Toast.LENGTH_SHORT).show();  stop();  }  }  } } } } }  /** * * @Description: 变化十位，并判断是否需要进位 * @param * @return boolean * @throws */ 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; }  }  /** * * @Description: 变化个位，并判断是否需要进位 * @param * @return boolean * @throws */ 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; }  }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="horizontal">  <TextView  android:id="@+id/tv_hour_decade"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:background="@drawable/sousuo"  android:gravity="center"  android:padding="5dp"  android:text="0"  android:textColor="#ffffff"  android:textSize="20dp" />  <TextView  android:id="@+id/tv_hour_unit"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_marginLeft="2dp"  android:background="@drawable/sousuo"  android:gravity="center"  android:padding="5dp"  android:text="0"  android:textColor="#ffffff"  android:textSize="20dp" />  <TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:gravity="center"  android:text=":"  android:padding="5dp"  android:textColor="#454545"  android:textSize="20dp" />  <TextView  android:id="@+id/tv_min_decade"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:background="@drawable/sousuo"  android:gravity="center"  android:text="0"  android:padding="5dp"  android:textColor="#ffffff"  android:textSize="20dp"/>  <TextView  android:id="@+id/tv_min_unit"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_marginLeft="1dp"  android:background="@drawable/sousuo"  android:gravity="center"  android:padding="5dp"  android:text="0"  android:textColor="#ffffff"  android:textSize="20dp"/>  <TextView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:gravity="center"  android:text=":"  android:padding="5dp"  android:textColor="#454545"  android:textSize="20dp" />   <TextView  android:id="@+id/tv_sec_decade"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:background="@drawable/sousuo"  android:gravity="center"  android:text="0"  android:padding="5dp"  android:textColor="#ffffff"  android:textSize="20dp"/>  <TextView  android:id="@+id/tv_sec_unit"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_marginLeft="1dp"  android:background="@drawable/sousuo"  android:gravity="center"  android:padding="5dp"  android:text="0"  android:textColor="#ffffff"  android:textSize="20dp" /> </LinearLayout>

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">  <!-- 背景颜色 --> <solid android:color="#454545" />   <!-- 控制边界线颜色和大小 --> <stroke  android:width="1dp"  android:color="#454545" />  <!-- 控制圆角大小 --> <corners android:radius="5dp" /> </shape>

package com.cqxxny.myapplication; import android.support.v7.app.AppCompatActivity;import android.os.Bundle; public class MainActivity extends AppCompatActivity { /**  * 功 能: 倒计时  * 所属模块:  * 创建时间: 2018/11/15  * 功能描述:  */ private RushBuyCountDownTimerView timerView; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  timerView = (RushBuyCountDownTimerView) findViewById(R.id.timerView);  // 设置时间(hour,min,sec)  timerView.setTime(10, 0, 10);  // 开始倒计时  timerView.start(); }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" tools:context=".MainActivity">  <com.cqxxny.myapplication.RushBuyCountDownTimerView  android:id="@+id/timerView"  android:layout_width="wrap_content"  android:layout_height="wrap_content"></com.cqxxny.myapplication.RushBuyCountDownTimerView> </LinearLayout>