這是一個(gè)倒數(shù)計(jì)時(shí)器，我想在幾分鐘和幾秒鐘內(nèi)打印出來(lái)。ex（300000mili）5分鐘，然后數(shù)4：60、4：59 ...這是我的代碼的一部分final MyCounter timer = new MyCounter(300000,1000); blue.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { timer.start(); } });}public class MyCounter extends CountDownTimer { public MyCounter(long millisInFuture, long countDownInterval) { super(millisInFuture, countDownInterval); } @Override public void onFinish() { blue.setText("Live"); } @Override public void onTick(long millisUntilFinished) { blue.setText((millisUntilFinished/60000)+":"+(millisUntilFinished/5000)); // i tried this }}當(dāng)缺少20秒時(shí)，我該如何振動(dòng)？何時(shí)完成？謝謝，抱歉我的英語(yǔ)不好
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TA貢獻(xiàn)2011條經(jīng)驗(yàn) 獲得超2個(gè)贊
http://developer.android.com/reference/android/os/CountDownTimer.html
TextView _tv = (TextView) findViewById( R.id.textView1 );
new CountDownTimer(30000, 1000) { // adjust the milli seconds here
public void onTick(long millisUntilFinished) {
_tv.setText(""+String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes( millisUntilFinished),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
}
public void onFinish() {
_tv.setText("done!");
}
}.start();
從Java 1.5開始，存在java.util.concurrent.TimeUnit類
_tv.setText(""+String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes( millisUntilFinished),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/TimeUnit.html
TimeUnit表示給定粒度單位的持續(xù)時(shí)間，并提供實(shí)用方法來(lái)跨單位轉(zhuǎn)換以及在這些單位中執(zhí)行計(jì)時(shí)和延遲操作。
對(duì)于1.5以下的Java版本或不完全支持TimeUnit類的系統(tǒng)，可以使用以下公式：
int seconds = (int) (milliseconds / 1000) % 60 ;
int minutes = (int) ((milliseconds / (1000*60)) % 60);
int hours = (int) ((milliseconds / (1000*60*60)) % 24);
振動(dòng)
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 500 milliseconds
v.vibrate(500);
<uses-permission android:name="android.permission.VIBRATE"/> // permission in manifest
編輯：
在4分55秒振動(dòng)500毫秒
if((TimeUnit.MILLISECONDS.toMinutes( millisUntilFinished)==4) &&
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))==55)
{
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 500 milliseconds
v.vibrate(500);
}
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