Androidでカウントダウンタイマーを開発しようとしています。この例では、カウントダウンタイマーに表示されるパラメーターとして分数を入力しています。
問題は、たとえば65のように分を入力すると、カウンターが65:00になることです。カウンターに1:05:00、つまりHH:MM:SS形式で表示したいのですが。
public class MainActivity extends Activity implements OnClickListener {
private Button buttonStartTime, buttonStopTime;
private EditText edtTimerValue;
private TextView textViewShowTime; // will show the time
private CountDownTimer countDownTimer; // built in Android class
// CountDownTimer
private long totalTimeCountInMilliseconds; // total count down time in
// milliseconds
private long timeBlinkInMilliseconds; // start time of start blinking
private boolean blink; // controls the blinking .. on and off
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
buttonStartTime = (Button) findViewById(R.id.btnStartTime);
buttonStopTime = (Button) findViewById(R.id.btnStopTime);
textViewShowTime = (TextView) findViewById(R.id.tvTimeCount);
edtTimerValue = (EditText) findViewById(R.id.edtTimerValue);
buttonStartTime.setOnClickListener(this);
buttonStopTime.setOnClickListener(this);
}
@Override
public void onClick(View v) {
if (v.getId() == R.id.btnStartTime) {
textViewShowTime.setTextAppearance(getApplicationContext(),
R.style.normalText);
setTimer();
buttonStopTime.setVisibility(View.VISIBLE);
buttonStartTime.setVisibility(View.GONE);
edtTimerValue.setVisibility(View.GONE);
edtTimerValue.setText("");
startTimer();
} else if (v.getId() == R.id.btnStopTime) {
countDownTimer.cancel();
buttonStartTime.setVisibility(View.VISIBLE);
buttonStopTime.setVisibility(View.GONE);
edtTimerValue.setVisibility(View.VISIBLE);
}
}
private void setTimer() {
int time = 0;
if (!edtTimerValue.getText().toString().equals("")) {
time = Integer.parseInt(edtTimerValue.getText().toString());
} else
Toast.makeText(MainActivity.this, "Please Enter Minutes...",
Toast.LENGTH_LONG).show();
totalTimeCountInMilliseconds = 60 * time * 1000;
timeBlinkInMilliseconds = 30 * 1000;
}
private void startTimer() {
countDownTimer = new CountDownTimer(totalTimeCountInMilliseconds, 500) {
// 500 means, onTick function will be called at every 500
// milliseconds
@Override
public void onTick(long leftTimeInMilliseconds) {
long seconds = leftTimeInMilliseconds / 1000;
if (leftTimeInMilliseconds < timeBlinkInMilliseconds) {
textViewShowTime.setTextAppearance(getApplicationContext(),
R.style.blinkText);
// change the style of the textview .. giving a red
// alert style
if (blink) {
textViewShowTime.setVisibility(View.VISIBLE);
// if blink is true, textview will be visible
} else {
textViewShowTime.setVisibility(View.INVISIBLE);
}
blink = !blink; // toggle the value of blink
}
textViewShowTime.setText(String.format("%02d", seconds / 60)
+ ":" + String.format("%02d", seconds % 60));
// format the textview to show the easily readable format
}
@Override
public void onFinish() {
// this function will be called when the timecount is finished
textViewShowTime.setText("Time up!");
textViewShowTime.setVisibility(View.VISIBLE);
buttonStartTime.setVisibility(View.VISIBLE);
buttonStopTime.setVisibility(View.GONE);
edtTimerValue.setVisibility(View.VISIBLE);
}
}.start();
}
}
以下のコードを使用して、seconds
の期間をHH:MM:SS
の形式に変換しています。
String.format("%02d:%02d:%02d", durationSeconds / 3600,
(durationSeconds % 3600) / 60, (durationSeconds % 60));
minutes
での入力を受け入れるようにこれを簡単に調整できますが、秒がないため、出力はHH:MM:00
の形式になります。例:
String.format("%02d:%02d:%02d", durationMinutes / 60, durationMinutes % 60, 0);
String.format(enter code here"%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(duration)%60,
TimeUnit.MILLISECONDS.toMinutes(duration)%60,
TimeUnit.MILLISECONDS.toSeconds(duration) % 60)