带H：MM：SS的天文台表

如何用H：MM：SS显示天文台表？ 我读MM：SS和H：MM：SS默认显示。我发现只有MM：SS。

这是我的MM代码：带开始和停止按钮的SS。

public class MainActivity extends AppCompatActivity { Button start,stop; Chronometer chrono; long time; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); start = (Button) findViewById(R.id.start); stop = (Button) findViewById(R.id.stop); chrono = (Chronometer) findViewById(R.id.chronometer); start.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { chrono.setBase(SystemClock.elapsedRealtime()); chrono.start(); } }); stop.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { chrono.stop(); } }); } } 

这是我的MainActivity的xml代码：

Answer 1

使用setOnChronometerTickListener将时间分为分钟，小时和秒 。

用这个 ……

 Chronometer chrono = (Chronometer) findViewById(R.id.chronomete); chrono.setOnChronometerTickListener(new OnChronometerTickListener(){ @Override public void onChronometerTick(Chronometer chronometer) { long time = SystemClock.elapsedRealtime() - chronometer.getBase(); int h = (int)(time /3600000); int m = (int)(time - h*3600000)/60000; int s= (int)(time - h*3600000- m*60000)/1000 ; String t = (h < 10 ? "0"+h: h)+":"+(m < 10 ? "0"+m: m)+":"+ (s < 10 ? "0"+s: s); chronometer.setText(t); } }); chrono.setBase(SystemClock.elapsedRealtime()); chrono.setText("00:00:00"); 

编辑

开始

全局声明一个长变量timeWhenStopped 。 它维持时间。

 private long timeWhenStopped = 0; 

启动监听器...获取时间，然后从那里开始。

  start.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { chrono.setBase(SystemClock.elapsedRealtime() + timeWhenStopped); chrono.start(); } }); 

停止监听....存储时间及停止时间。

 stop.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { timeWhenStopped = chrono.getBase() - SystemClock.elapsedRealtime(); chrono.stop(); } }); 

喜欢编码............

Answer 2

layout.xml

在活动中

 import java.util.Calendar; import android.app.Activity; import android.os.Bundle; import android.os.SystemClock; import android.text.format.DateFormat; import android.widget.Chronometer; import android.widget.Chronometer.OnChronometerTickListener; import android.widget.TextView; public class MainActivity extends Activity { TextView tvData; Chronometer chronometer; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tvData = (TextView) findViewById(R.id.tv_data); chronometer = (Chronometer) findViewById(R.id.chronometer); startChronometer(); chronometer.setOnChronometerTickListener(new OnChronometerTickListener() { public void onChronometerTick(Chronometer cArg) { Calendar calendar = Calendar.getInstance(); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, getCurrentMiliSecondsOfChronometer()); tvData.setText(DateFormat.format("HH:mm:ss", calendar.getTime())); } }); } private int getCurrentMiliSecondsOfChronometer() { int stoppedMilliseconds = 0; String chronoText = chronometer.getText().toString(); String array[] = chronoText.split(":"); if (array.length == 2) { stoppedMilliseconds = Integer.parseInt(array[0]) * 60 * 1000 + Integer.parseInt(array[1]) * 1000; } else if (array.length == 3) { stoppedMilliseconds = Integer.parseInt(array[0]) * 60 * 60 * 1000 + Integer.parseInt(array[1]) * 60 * 1000 + Integer.parseInt(array[2]) * 1000; } return stoppedMilliseconds; } private void startChronometer() { int stoppedMilliseconds = getCurrentMiliSecondsOfChronometer(); chronometer.setBase(SystemClock.elapsedRealtime() - stoppedMilliseconds); chronometer.start(); } } 

Answer 3

您还可以设置具有吸引力的计时器格式，如00小时：00分钟：00秒

  chronometer.setText("00 hrs : 00 min : 00 sec"); chronometer.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() { @Override public void onChronometerTick(Chronometer chronometer) { CharSequence text = chronometer.getText(); if (text.length() == 5) { String a[] = text.toString().split(":"); String min = a[0] + " min : "; String sec = a[1] + " sec"; chronometer.setText("00 hrs : " + min + sec); } else if (text.length() == 7) { String a[] = text.toString().split(":"); String hr = a[0] + " hrs : "; String min = a[1] + " min : "; String sec = a[2] + " sec"; chronometer.setText("0" + hr + min + sec); } } });