本文实例为大家分享了Android实现时间倒计时功能展示的具体代码，供大家参考，具体内容如下

效果展示

MainActivity（主页面代码）

public class MainActivity extends Activity { private RelativeLayout countDown; // 倒计时 private TextView daysTv, hoursTv, minutesTv, secondsTv; private long mDay = 10; private long mHour = 10; private long mMin = 30; private long mSecond = 00;// 天 ,小时,分钟,秒 private boolean isRun = true; private Handler timeHandler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); if (msg.what==1) { computeTime(); daysTv.setText(mDay+""); hoursTv.setText(mHour+""); minutesTv.setText(mMin+""); secondsTv.setText(mSecond+""); if (mDay==0&&mHour==0&&mMin==0&&mSecond==0) { countDown.setVisibility(View.GONE); } } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); countDown = (RelativeLayout) findViewById(R.id.countdown_layout); daysTv = (TextView) findViewById(R.id.days_tv); hoursTv = (TextView) findViewById(R.id.hours_tv); minutesTv = (TextView) findViewById(R.id.minutes_tv); secondsTv = (TextView) findViewById(R.id.seconds_tv); startRun(); } /** * 开启倒计时 */ private void startRun() { new Thread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub while (isRun) { try { Thread.sleep(1000); // sleep 1000ms Message message = Message.obtain(); message.what = 1; timeHandler.sendMessage(message); } catch (Exception e) { e.printStackTrace(); } } } }).start(); } /** * 倒计时计算 */ private void computeTime() { mSecond--; if (mSecond < 0) { mMin--; mSecond = 59; if (mMin < 0) { mMin = 59; mHour--; if (mHour < 0) { // 倒计时结束 mHour = 23; mDay--; } } } }}

main（主页面布局）

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/countdown_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/white" android:gravity="center" > <RelativeLayout android:id="@+id/daojishi_rl" android:layout_width="match_parent" android:layout_height="40.0dip" android:layout_marginLeft="10.0dip" android:layout_marginRight="10.0dip" android:gravity="center" > <ImageView android:id="@+id/describe_iv" android:layout_width="40.0dip" android:layout_height="40.0dip" android:background="@drawable/clock" android:gravity="center_vertical" /> <TextView android:id="@+id/describe_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginRight="5.0dip" android:layout_toRightOf="@+id/describe_iv" android:text="距离活动还有 " android:textSize="25sp" /> <TextView android:id="@+id/days_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_toRightOf="@+id/describe_tv" android:textColor="@color/colorAccent" android:gravity="center" android:text="20" android:textSize="20sp" /> <TextView android:id="@+id/colon0" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="5.0dip" android:layout_marginRight="3.0dip" android:layout_toRightOf="@+id/days_tv" android:text="天" android:textSize="20sp" android:textStyle="bold" /> </RelativeLayout> <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/daojishi_rl" android:gravity="center_horizontal" > <TextView android:id="@+id/hours_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_toLeftOf="@+id/colon1" android:textColor="@color/colorAccent" android:gravity="center" android:text="23" android:textSize="20sp" /> <TextView android:id="@+id/colon1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="3.0dip" android:layout_marginRight="3.0dip" android:layout_toLeftOf="@+id/minutes_tv" android:text=":" android:textSize="20sp" android:textStyle="bold" /> <TextView android:id="@+id/minutes_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_toLeftOf="@+id/colon2" android:textColor="@color/colorAccent" android:gravity="center" android:text="59" android:textSize="20sp" /> <TextView android:id="@+id/colon2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="3.0dip" android:layout_marginRight="3.0dip" android:layout_toLeftOf="@+id/seconds_tv" android:text=":" android:textSize="20sp" android:textStyle="bold" /> <TextView android:id="@+id/seconds_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:gravity="center" android:text="59" android:textColor="@color/colorAccent" android:textSize="20sp" /> </RelativeLayout></RelativeLayout>

谢谢观看，小编祝大家生活愉快！

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