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">  <solid android:color="#454545" />  <stroke android:width="1dp" android:color="#454545" />  <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>

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