Animated progress bar

app/src/main/java/com/philliphsu/clock2/Timer.java

@@ -18,6 +18,16 @@ public abstract class Timer extends ObjectWithId implements Parcelable {
 
     private long endTime;
     private long pauseTime;
+    private long duration;
+
+    // Using this crashes the app when we create a Timer and start it...
+    // timeRemaining() is returning a negative value... but it doesn't even
+    // consider duration()....?
+    // My guess is the hour, minute, and second getters are returning 0
+    // at this point...?
+//    private final long normalDuration = TimeUnit.HOURS.toMillis(hour())
+//            + TimeUnit.MINUTES.toMillis(minute())
+//            + TimeUnit.SECONDS.toMillis(second());
 
     public abstract int hour();
     public abstract int minute();
@@ -61,9 +71,12 @@ public abstract class Timer extends ObjectWithId implements Parcelable {
     }
 
     public long duration() {
-        return TimeUnit.HOURS.toMillis(hour())
-                + TimeUnit.MINUTES.toMillis(minute())
-                + TimeUnit.SECONDS.toMillis(second());
+        if (duration == 0) {
+            duration = TimeUnit.HOURS.toMillis(hour())
+                    + TimeUnit.MINUTES.toMillis(minute())
+                    + TimeUnit.SECONDS.toMillis(second());
+        }
+        return duration;
     }
 
     public void start() {
@@ -89,6 +102,7 @@ public abstract class Timer extends ObjectWithId implements Parcelable {
     public void stop() {
         endTime = 0;
         pauseTime = 0;
+        duration = 0;
     }
 
     public void addOneMinute() {
@@ -97,8 +111,17 @@ public abstract class Timer extends ObjectWithId implements Parcelable {
 //            throw new IllegalStateException("Cannot extend a timer that is not running");
         if (expired()) {
             endTime = SystemClock.elapsedRealtime() + MINUTE;
+            // If the timer's normal duration is >= MINUTE, then an extra run time of one minute
+            // will still be within the normal duration. Thus, the progress calculation does not
+            // need to change. For example, if the timer's normal duration is 2 minutes, an extra
+            // 1 minute run time is fully encapsulated within the 2 minute upper bound.
+            if (duration < MINUTE) {
+                // This scales the progress bar to a full minute.
+                duration = MINUTE;
+            }
         } else {
             endTime += MINUTE;
+            duration += MINUTE;
         }
     }
 
@@ -131,6 +154,13 @@ public abstract class Timer extends ObjectWithId implements Parcelable {
         return pauseTime;
     }
 
+    /**
+     * TO ONLY BE CALLED BY TIMERDATABASEHELPER.
+     */
+    public void setDuration(long duration) {
+        this.duration = duration;
+    }
+
     @Override
     public int describeContents() {
         return 0;
@@ -146,6 +176,7 @@ public abstract class Timer extends ObjectWithId implements Parcelable {
         dest.writeLong(getId());
         dest.writeLong(endTime);
         dest.writeLong(pauseTime);
+        dest.writeLong(duration);
     }
 
     public static final Creator<Timer> CREATOR = new Creator<Timer>() {
@@ -166,6 +197,7 @@ public abstract class Timer extends ObjectWithId implements Parcelable {
         t.setId(source.readLong());
         t.endTime = source.readLong();
         t.pauseTime = source.readLong();
+        t.duration = source.readLong();
         return t;
     }
 }

app/src/main/java/com/philliphsu/clock2/model/TimerCursor.java

@@ -26,6 +26,7 @@ public class TimerCursor extends BaseItemCursor<Timer> {
         t.setId(getLong(getColumnIndexOrThrow(TimersTable.COLUMN_ID)));
         t.setEndTime(getLong(getColumnIndexOrThrow(TimersTable.COLUMN_END_TIME)));
         t.setPauseTime(getLong(getColumnIndexOrThrow(TimersTable.COLUMN_PAUSE_TIME)));
+        t.setDuration(getLong(getColumnIndexOrThrow(TimersTable.COLUMN_DURATION)));
         return t;
     }
 }

app/src/main/java/com/philliphsu/clock2/model/TimersTable.java

@@ -27,9 +27,9 @@ public final class TimersTable {
     
     public static final String COLUMN_END_TIME = "end_time";
     public static final String COLUMN_PAUSE_TIME = "pause_time";
+    public static final String COLUMN_DURATION = "duration";
 
-    public static final String SORT_ORDER =
-            COLUMN_HOUR + " ASC, "
+    public static final String SORT_ORDER = COLUMN_HOUR + " ASC, "
                     + COLUMN_MINUTE + " ASC, "
                     + COLUMN_SECOND + " ASC, "
                     // All else equal, newer timers first
@@ -44,7 +44,8 @@ public final class TimersTable {
                 + COLUMN_LABEL + " TEXT NOT NULL, "
 //                + COLUMN_GROUP + " TEXT NOT NULL, "
                 + COLUMN_END_TIME + " INTEGER NOT NULL, "
-                + COLUMN_PAUSE_TIME + " INTEGER NOT NULL);");
+                + COLUMN_PAUSE_TIME + " INTEGER NOT NULL, "
+                + COLUMN_DURATION + " INTEGER NOT NULL);");
     }
 
     public static void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

app/src/main/java/com/philliphsu/clock2/model/TimersTableManager.java

@@ -53,6 +53,7 @@ public class TimersTableManager extends DatabaseTableManager<Timer> {
         Log.d(TAG, "endTime = " + timer.endTime() + ", pauseTime = " + timer.pauseTime());
         cv.put(TimersTable.COLUMN_END_TIME, timer.endTime());
         cv.put(TimersTable.COLUMN_PAUSE_TIME, timer.pauseTime());
+        cv.put(TimersTable.COLUMN_DURATION, timer.duration());
         return cv;
     }
 

app/src/main/java/com/philliphsu/clock2/timers/TimerViewHolder.java

@@ -1,5 +1,7 @@
 package com.philliphsu.clock2.timers;
 
+import android.animation.ObjectAnimator;
+import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageButton;
@@ -20,9 +22,11 @@ import butterknife.OnClick;
  */
 public class TimerViewHolder extends BaseViewHolder<Timer> {
     private static final String TAG = "TimerViewHolder";
+    private static final int MAX_PROGRESS = 10000;
 
     private final AsyncTimersTableUpdateHandler mAsyncTimersTableUpdateHandler;
     private TimerController mController;
+    private ObjectAnimator mProgressAnimator;
 
     @Bind(R.id.label) TextView mLabel;
     @Bind(R.id.duration) CountdownChronometer mChronometer;
@@ -34,17 +38,20 @@ public class TimerViewHolder extends BaseViewHolder<Timer> {
     public TimerViewHolder(ViewGroup parent, OnListItemInteractionListener<Timer> listener,
                            AsyncTimersTableUpdateHandler asyncTimersTableUpdateHandler) {
         super(parent, R.layout.item_timer, listener);
+        Log.d(TAG, "New TimerViewHolder");
         mAsyncTimersTableUpdateHandler = asyncTimersTableUpdateHandler;
     }
 
     @Override
-    public void onBind(Timer timer) {
+    public void onBind(final Timer timer) {
         super.onBind(timer);
+        Log.d(TAG, "Binding TimerViewHolder");
         // TOneverDO: create before super
         mController = new TimerController(timer, mAsyncTimersTableUpdateHandler);
         bindLabel(timer.label());
         bindChronometer(timer);
         bindButtonControls(timer);
+        bindProgressBar(timer);
     }
 
     @OnClick(R.id.start_pause)
@@ -106,4 +113,42 @@ public class TimerViewHolder extends BaseViewHolder<Timer> {
         mAddOneMinute.setVisibility(visibility);
         mStop.setVisibility(visibility);
     }
+
+    private void bindProgressBar(Timer timer) {
+        mProgressBar.setMax(MAX_PROGRESS);
+        final long timeRemaining = timer.timeRemaining();
+        final int progress = (int) (MAX_PROGRESS * (double) timeRemaining / timer.duration());
+
+        // In case we're reusing an animator instance that could be running
+        if (mProgressAnimator != null && mProgressAnimator.isRunning()) {
+            mProgressAnimator.end();
+        }
+
+        if (!timer.isRunning()) {
+            mProgressBar.setProgress(progress);
+        } else {
+            mProgressAnimator = ObjectAnimator.ofInt(
+                    // The object that has the property we wish to animate
+                    mProgressBar,
+                    // The name of the property of the object that identifies which setter method
+                    // the animation will call to update its values. Here, a property name of
+                    // "progress" will result in a call to the function setProgress() in ProgressBar.
+                    // The docs for ObjectAnimator#setPropertyName() says that for best performance,
+                    // the setter method should take a float or int parameter, and its return type
+                    // should be void (both of which setProgress() satisfies).
+                    "progress",
+                    // The set of values to animate between. A single value implies that that value
+                    // is the one being animated to. Two values imply starting and ending values.
+                    // More than two values imply a starting value, values to animate through along
+                    // the way, and an ending value (these values will be distributed evenly across
+                    // the duration of the animation).
+                    progress, 0);
+            mProgressAnimator.setDuration(timeRemaining);
+            // The algorithm that calculates intermediate values between keyframes. We use linear
+            // interpolation so that the animation runs at constant speed.
+            mProgressAnimator.setInterpolator(null/*results in linear interpolation*/);
+            // This MUST be run on the UI thread.
+            mProgressAnimator.start();
+        }
+    }
 }

app/src/main/res/layout/item_timer.xml

@@ -34,7 +34,6 @@
             android:id="@+id/progress_bar"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:progress="90"
             style="@style/Widget.AppCompat.ProgressBar.Horizontal"
             android:layout_below="@id/duration"/>