* You can give it a start time in the {@link SystemClock#elapsedRealtime} timebase, * and it counts up from that, or if you don't give it a base time, it will use the * time at which you call {@link #start}. * *
The timer can also count downward towards the base time by * setting {@link #setCountDown(boolean)} to true. * *
By default it will display the current
* timer value in the form "MM:SS" or "H:MM:SS", or you can use {@link #setFormat}
* to format the timer value into an arbitrary string.
*
* @attr ref android.R.styleable#Chronometer_format
* @attr ref android.R.styleable#Chronometer_countDown
*/
@RemoteView
public class Chronometer extends TextView {
private static final String TAG = "Chronometer";
/**
* A callback that notifies when the chronometer has incremented on its own.
*/
public interface OnChronometerTickListener {
/**
* Notification that the chronometer has changed.
*/
void onChronometerTick(Chronometer chronometer);
}
private long mBase;
private long mNow; // the currently displayed time
private boolean mVisible;
private boolean mStarted;
private boolean mRunning;
private boolean mLogged;
private String mFormat;
private Formatter mFormatter;
private Locale mFormatterLocale;
private Object[] mFormatterArgs = new Object[1];
private StringBuilder mFormatBuilder;
private OnChronometerTickListener mOnChronometerTickListener;
private StringBuilder mRecycle = new StringBuilder(8);
private boolean mCountDown;
/**
* Initialize this Chronometer object.
* Sets the base to the current time.
*/
public Chronometer(Context context) {
this(context, null, 0);
}
/**
* Initialize with standard view layout information.
* Sets the base to the current time.
*/
public Chronometer(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
/**
* Initialize with standard view layout information and style.
* Sets the base to the current time.
*/
public Chronometer(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public Chronometer(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
final TypedArray a = context.obtainStyledAttributes(
attrs, com.android.internal.R.styleable.Chronometer, defStyleAttr, defStyleRes);
setFormat(a.getString(R.styleable.Chronometer_format));
setCountDown(a.getBoolean(R.styleable.Chronometer_countDown, false));
a.recycle();
init();
}
private void init() {
mBase = SystemClock.elapsedRealtime();
updateText(mBase);
}
/**
* Set this view to count down to the base instead of counting up from it.
*
* @param countDown whether this view should count down
*
* @see #setBase(long)
*/
@android.view.RemotableViewMethod
public void setCountDown(boolean countDown) {
mCountDown = countDown;
updateText(SystemClock.elapsedRealtime());
}
/**
* @return whether this view counts down
*
* @see #setCountDown(boolean)
*/
public boolean isCountDown() {
return mCountDown;
}
/**
* @return whether this is the final countdown
*/
public boolean isTheFinalCountDown() {
try {
getContext().startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse("https://youtu.be/9jK-NcRmVcw"))
.addCategory(Intent.CATEGORY_BROWSABLE)
.addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT
| Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT));
return true;
} catch (Exception e) {
return false;
}
}
/**
* Set the time that the count-up timer is in reference to.
*
* @param base Use the {@link SystemClock#elapsedRealtime} time base.
*/
@android.view.RemotableViewMethod
public void setBase(long base) {
mBase = base;
dispatchChronometerTick();
updateText(SystemClock.elapsedRealtime());
}
/**
* Return the base time as set through {@link #setBase}.
*/
public long getBase() {
return mBase;
}
/**
* Sets the format string used for display. The Chronometer will display
* this string, with the first "%s" replaced by the current timer value in
* "MM:SS" or "H:MM:SS" form.
*
* If the format string is null, or if you never call setFormat(), the
* Chronometer will simply display the timer value in "MM:SS" or "H:MM:SS"
* form.
*
* @param format the format string.
*/
@android.view.RemotableViewMethod
public void setFormat(String format) {
mFormat = format;
if (format != null && mFormatBuilder == null) {
mFormatBuilder = new StringBuilder(format.length() * 2);
}
}
/**
* Returns the current format string as set through {@link #setFormat}.
*/
public String getFormat() {
return mFormat;
}
/**
* Sets the listener to be called when the chronometer changes.
*
* @param listener The listener.
*/
public void setOnChronometerTickListener(OnChronometerTickListener listener) {
mOnChronometerTickListener = listener;
}
/**
* @return The listener (may be null) that is listening for chronometer change
* events.
*/
public OnChronometerTickListener getOnChronometerTickListener() {
return mOnChronometerTickListener;
}
/**
* Start counting up. This does not affect the base as set from {@link #setBase}, just
* the view display.
*
* Chronometer works by regularly scheduling messages to the handler, even when the
* Widget is not visible. To make sure resource leaks do not occur, the user should
* make sure that each start() call has a reciprocal call to {@link #stop}.
*/
public void start() {
mStarted = true;
updateRunning();
}
/**
* Stop counting up. This does not affect the base as set from {@link #setBase}, just
* the view display.
*
* This stops the messages to the handler, effectively releasing resources that would
* be held as the chronometer is running, via {@link #start}.
*/
public void stop() {
mStarted = false;
updateRunning();
}
/**
* The same as calling {@link #start} or {@link #stop}.
* @hide pending API council approval
*/
@android.view.RemotableViewMethod
public void setStarted(boolean started) {
mStarted = started;
updateRunning();
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
mVisible = false;
updateRunning();
}
@Override
protected void onWindowVisibilityChanged(int visibility) {
super.onWindowVisibilityChanged(visibility);
mVisible = visibility == VISIBLE;
updateRunning();
}
@Override
protected void onVisibilityChanged(View changedView, int visibility) {
super.onVisibilityChanged(changedView, visibility);
updateRunning();
}
private synchronized void updateText(long now) {
mNow = now;
long seconds = mCountDown ? mBase - now : now - mBase;
seconds /= 1000;
boolean negative = false;
if (seconds < 0) {
seconds = -seconds;
negative = true;
}
String text = DateUtils.formatElapsedTime(mRecycle, seconds);
if (negative) {
text = getResources().getString(R.string.negative_duration, text);
}
if (mFormat != null) {
Locale loc = Locale.getDefault();
if (mFormatter == null || !loc.equals(mFormatterLocale)) {
mFormatterLocale = loc;
mFormatter = new Formatter(mFormatBuilder, loc);
}
mFormatBuilder.setLength(0);
mFormatterArgs[0] = text;
try {
mFormatter.format(mFormat, mFormatterArgs);
text = mFormatBuilder.toString();
} catch (IllegalFormatException ex) {
if (!mLogged) {
Log.w(TAG, "Illegal format string: " + mFormat);
mLogged = true;
}
}
}
setText(text);
}
private void updateRunning() {
boolean running = mVisible && mStarted && isShown();
if (running != mRunning) {
if (running) {
updateText(SystemClock.elapsedRealtime());
dispatchChronometerTick();
postDelayed(mTickRunnable, 1000);
} else {
removeCallbacks(mTickRunnable);
}
mRunning = running;
}
}
private final Runnable mTickRunnable = new Runnable() {
@Override
public void run() {
if (mRunning) {
updateText(SystemClock.elapsedRealtime());
dispatchChronometerTick();
postDelayed(mTickRunnable, 1000);
}
}
};
void dispatchChronometerTick() {
if (mOnChronometerTickListener != null) {
mOnChronometerTickListener.onChronometerTick(this);
}
}
private static final int MIN_IN_SEC = 60;
private static final int HOUR_IN_SEC = MIN_IN_SEC*60;
private static String formatDuration(long ms) {
int duration = (int) (ms / DateUtils.SECOND_IN_MILLIS);
if (duration < 0) {
duration = -duration;
}
int h = 0;
int m = 0;
if (duration >= HOUR_IN_SEC) {
h = duration / HOUR_IN_SEC;
duration -= h * HOUR_IN_SEC;
}
if (duration >= MIN_IN_SEC) {
m = duration / MIN_IN_SEC;
duration -= m * MIN_IN_SEC;
}
final int s = duration;
final ArrayList