安卓定时器
如图是效果图
其中2个文本文件是获取当前的系统时间
其中最关键的是计时器的代码设置
如下是计时器的代码和布局文件
1 package org.xml.demo.jishi; 2 3 import java.util.Timer; 4 import java.util.TimerTask; 5 6 import ogg.huanxin.huadong.R; 7 import android.content.Context; 8 import android.os.Handler; 9 import android.util.AttributeSet; 10 import android.view.LayoutInflater; 11 import android.view.View; 12 import android.widget.LinearLayout; 13 import android.widget.TextView; 14 import android.widget.Toast; 15 16 public class TimeView extends LinearLayout { 17 // 小时的十位数 18 private TextView tv_hour_decade; 19 // 小时的个位数 20 private TextView tv_hour_unit; 21 // 分钟的十位数 22 private TextView tv_min_decade; 23 // 分钟的个位数 24 private TextView tv_min_unit; 25 // 秒的十位数 26 private TextView tv_sec_decade; 27 // 秒的个位数 28 private TextView tv_sec_unit; 29 30 private Context context; 31 private int hour_decade; 32 private int hour_unit; 33 private int min_decade; 34 private int min_unit; 35 private int sec_decade; 36 private int sec_unit; 37 38 // 计时器 39 private Timer timer; 40 private Handler handler = new Handler() { 41 public void handleMessage(android.os.Message msg) { 42 countdown(); 43 } 44 45 }; 46 47 public TimeView(Context context, AttributeSet attrs) { 48 super(context, attrs); 49 // TODO Auto-generated constructor stub 50 this.context = context; 51 52 LayoutInflater inflater = (LayoutInflater) context 53 .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 54 View view = inflater.inflate(R.layout.jishidemo, this); 55 tv_hour_decade = (TextView) view.findViewById(R.id.tv_hour_decade); 56 tv_hour_unit = (TextView) view.findViewById(R.id.tv_hour_unit); 57 tv_min_decade = (TextView) view.findViewById(R.id.tv_min_decade); 58 tv_min_unit = (TextView) view.findViewById(R.id.tv_min_unit); 59 tv_sec_decade = (TextView) view.findViewById(R.id.tv_sec_decade); 60 tv_sec_unit = (TextView) view.findViewById(R.id.tv_sec_unit); 61 62 } 63 64 /** 65 * 开始倒计时 66 */ 67 public void start() { 68 if (timer == null) { 69 timer = new Timer(); 70 timer.schedule(new TimerTask() { 71 72 @Override 73 public void run() { 74 // TODO Auto-generated method stub 75 handler.sendEmptyMessage(0); 76 } 77 }, 0, 1000); 78 } 79 } 80 81 /** 82 * 结束计时 83 */ 84 public void stop() { 85 if (timer != null) { 86 timer.cancel(); 87 timer = null; 88 } 89 } 90 91 /** 92 * 设置时间的参数 93 */ 94 public void setTime(int hour, int min, int sec) { 95 if (hour >= 60 || min >= 60 || sec >= 60 || hour < 0 || min < 0 96 || sec < 0) { 97 throw new RuntimeException("Time format is error"); 98 } 99 100 hour_decade = hour / 10; 101 hour_unit = hour - hour_decade * 10; 102 103 min_decade = min / 10; 104 min_unit = min - min_decade * 10; 105 106 sec_decade = sec / 10; 107 sec_unit = sec - sec_decade * 10; 108 tv_hour_decade.setText(hour_decade + ""); 109 tv_hour_unit.setText(hour_unit + ""); 110 tv_min_decade.setText(min_decade + ""); 111 tv_min_unit.setText(min_unit + ""); 112 tv_sec_decade.setText(sec_decade + ""); 113 tv_sec_unit.setText(sec_unit + ""); 114 115 } 116 117 /** 118 * 变化时间的十位数 119 * 120 * @param tv 121 * @return boolean 122 */ 123 private boolean isCarry4Decade(TextView tv) { 124 int time1 = Integer.valueOf(tv.getText().toString()); 125 time1 = time1 - 1; 126 if (time1 < 0) { 127 time1 = 5; 128 tv.setText(time1 + ""); 129 return true; 130 } else { 131 tv.setText(time1 + ""); 132 return false; 133 } 134 } 135 136 private boolean isCarry4Unit(TextView tv) { 137 138 int time = Integer.valueOf(tv.getText().toString()); 139 time = time - 1; 140 if (time < 0) { 141 time = 9; 142 tv.setText(time + ""); 143 return true; 144 } else { 145 tv.setText(time + ""); 146 return false; 147 } 148 } 149 150 /** 151 * 倒计时 152 */ 153 private void countdown() { 154 if (isCarry4Unit(tv_sec_unit)) { 155 if (isCarry4Decade(tv_sec_decade)) { 156 157 if (isCarry4Unit(tv_min_unit)) { 158 if (isCarry4Decade(tv_min_decade)) { 159 160 if (isCarry4Unit(tv_hour_unit)) { 161 if (isCarry4Decade(tv_hour_decade)) { 162 Toast.makeText(context, "时间到了", 163 Toast.LENGTH_SHORT).show(); 164 stop(); 165 } 166 } 167 } 168 } 169 } 170 } 171 } 172 }
布局文件
<?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="wrap_content" android:paddingLeft="10dp" android:paddingRight="10dp" android:background="#FCC0E9" android:orientation="horizontal" > <TextView android:id="@+id/tv_hour_decade" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="0" android:textColor="@android:color/white" android:textSize="15sp" android:textStyle="bold" /> <TextView android:id="@+id/tv_hour_unit" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="1dp" android:layout_weight="1" android:gravity="center" android:text="0" android:textColor="@android:color/white" android:textSize="15sp" android:textStyle="bold" /> <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center_horizontal|bottom" android:text="时" android:textColor="#ffffff" android:textSize="13sp" /> <!-- --> <TextView android:id="@+id/tv_min_decade" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="0" android:textColor="@android:color/white" android:textSize="15sp" android:textStyle="bold" /> <TextView android:id="@+id/tv_min_unit" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="1dp" android:layout_weight="1" android:gravity="center" android:text="0" android:textColor="@android:color/white" android:textSize="15sp" android:textStyle="bold" /> <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center_horizontal|bottom" android:text="分" android:textColor="#ffffff" android:textSize="13sp" /> <!-- --> <TextView android:id="@+id/tv_sec_decade" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center" android:text="0" android:textColor="@android:color/white" android:textSize="15sp" android:textStyle="bold" /> <TextView android:id="@+id/tv_sec_unit" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="1dp" android:layout_weight="1" android:gravity="center" android:text="0" android:textColor="@android:color/white" android:textSize="15sp" android:textStyle="bold" /> <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center_horizontal|bottom" android:text="秒" android:textColor="#ffffff" android:textSize="13sp" /> </LinearLayout>
其中主代码文件
1 package org.xml.demo.jishi; 2 3 import java.text.SimpleDateFormat; 4 import java.util.Calendar; 5 import java.util.Date; 6 7 import ogg.huanxin.huadong.R; 8 import android.app.Activity; 9 import android.os.Bundle; 10 import android.widget.TextView; 11 import android.widget.Toast; 12 13 public class JiShi extends Activity { 14 private TimeView timeView; 15 private TextView tv_timeTextView; 16 private TextView tView; 17 18 @Override 19 protected void onCreate(Bundle savedInstanceState) { 20 // TODO Auto-generated method stub 21 super.onCreate(savedInstanceState); 22 super.setContentView(R.layout.main_jishi); 23 timeView = (TimeView) super.findViewById(R.id.tv_myjishi); 24 tv_timeTextView = (TextView) super.findViewById(R.id.tv_shijian); 25 tView = (TextView) super.findViewById(R.id.tv_dangqianshijian); 26 // 设置时间 27 timeView.setTime(10, 0, 0); 28 // 计时开始 29 timeView.start(); 30 31 // 获取当前系统时间 32 Calendar calendar = Calendar.getInstance(); 33 int year = calendar.get(Calendar.YEAR);// 获取年份 34 int month = calendar.get(Calendar.MONTH) + 1;// 获取月份 35 // int day = calendar.get(Calendar.DAY_OF_MONTH);//当前日期 36 int day = calendar.get(Calendar.DATE);// 当前日期 37 int hour = calendar.get(Calendar.HOUR_OF_DAY);// 当期时间 38 int min = Calendar.getInstance().get(Calendar.MINUTE);// 当前分钟 39 int sec = calendar.get(Calendar.SECOND);// 当前秒钟 40 41 String s = "当前时间为：" + year + "年" + month + "月" + day + "日" + hour + "时" 42 + min + "分" + sec + "秒"; 43 44 tv_timeTextView.setText(s); 45 Toast.makeText(this, s, Toast.LENGTH_LONG).show(); 46 47 SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 48 String string = df.format(new Date()); 49 tView.setText(string); 50 51 } 52 }
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:background="#eee" 6 android:orientation="vertical" > 7 8 <TextView 9 android:layout_width="wrap_content" 10 android:layout_height="wrap_content" 11 android:paddingLeft="10dp" 12 android:text="距商品开枪还有" 13 android:textColor="#030303" 14 android:textSize="20sp" /> 15 16 <View 17 android:layout_width="match_parent" 18 android:layout_height="1dp" 19 android:background="@android:color/white" /> 20 21 <org.xml.demo.jishi.TimeView 22 android:id="@+id/tv_myjishi" 23 android:layout_width="wrap_content" 24 android:layout_height="wrap_content" 25 android:paddingLeft="10dp" > 26 </org.xml.demo.jishi.TimeView> 27 28 <TextView 29 android:id="@+id/tv_shijian" 30 android:layout_marginTop="10dp" 31 android:layout_width="match_parent" 32 android:layout_height="wrap_content" /> 33 34 <TextView 35 android:id="@+id/tv_dangqianshijian" 36 android:layout_marginTop="10dp" 37 android:layout_width="match_parent" 38 android:layout_height="wrap_content" /> 39 40 </LinearLayout>
Date date = new Date();
DateFormat ddf = DateFormat.getDateInstance();
String day = ddf.format(date);
DateFormat ddy = DateFormat.getTimeInstance();
String timeString = ddy.format(date);
DateFormat ddty = DateFormat.getDateTimeInstance();
String shjian = ddty.format(date);
System.out.println(day + "----" + timeString + "--------"
+ shjian);
