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validate(); } } @Override protected void onVisibilityChanged(View changedView, int visibility) { super.onVisibilityChanged(changedView, visibility); if (visibility == VISIBLE) { lastTimeAnimated = SystemClock.uptimeMillis(); } } private void updateBarLength(long deltaTimeInMilliSeconds) { if (pausedTimeWithoutGrowing >= pauseGrowingTime) { timeStartGrowing += deltaTimeInMilliSeconds; if (timeStartGrowing > barSpinCycleTime) { // We completed a size change cycle // (growing or shrinking) timeStartGrowing -= barSpinCycleTime; //if(barGrowingFromFront) { pausedTimeWithoutGrowing = 0; //} barGrowingFromFront = !barGrowingFromFront; } float distance = (float) Math.cos((timeStartGrowing / barSpinCycleTime + 1) * Math.PI) / 2 + 0.5f; float destLength = (barMaxLength - barLength); if (barGrowingFromFront) { barExtraLength = distance * destLength; } else { float newLength = destLength * (1 - distance); mProgress += (barExtraLength - newLength); barExtraLength = newLength; } } else { pausedTimeWithoutGrowing += deltaTimeInMilliSeconds; } } /** * Check if the wheel is currently spinning */ public boolean isSpinning() { return isSpinning; } /** * Reset the count (in increment mode) */ public void resetCount() { mProgress = 0.0f; mTargetProgress = 0.0f; invalidate(); } /** * Turn off spin mode */ public void stopSpinning() { isSpinning = false; mProgress = 0.0f; mTargetProgress = 0.0f; invalidate(); } /** * Puts the view on spin mode */ public void spin() { lastTimeAnimated = SystemClock.uptimeMillis(); isSpinning = true; invalidate(); } private void runCallback(float value) { if (callback != null) { callback.onProgressUpdate(value); } } private void runCallback() { if (callback != null) { float normalizedProgress = (float) Math.round(mProgress * 100 / 360.0f) / 100; callback.onProgressUpdate(normalizedProgress); } } /** * Set the progress to a specific value, * the bar will be set instantly to that value * * @param progress the progress between 0 and 1 */ public void setInstantProgress(float progress) { if (isSpinning) { mProgress = 0.0f; isSpinning = false; } if (progress > 1.0f) { progress -= 1.0f; } else if (progress < 0) { progress = 0; } if (progress == mTargetProgress) { return; } mTargetProgress = Math.min(progress * 360.0f, 360.0f); mProgress = mTargetProgress; lastTimeAnimated = SystemClock.uptimeMillis(); invalidate(); } // Great way to save a view's state http://stackoverflow.com/a/7089687/1991053 @Override public Parcelable onSaveInstanceState() { Parcelable superState = super.onSaveInstanceState(); WheelSavedState ss = new WheelSavedState(superState); // We save everything that can be changed at runtime ss.mProgress = this.mProgress; ss.mTargetProgress = this.mTargetProgress; ss.isSpinning = this.isSpinning; ss.spinSpeed = this.spinSpeed; ss.barWidth = this.barWidth; ss.barColor = this.barColor; ss.rimWidth = this.rimWidth; ss.rimColor = this.rimColor; ss.circleRadius = this.circleRadius; ss.linearProgress = this.linearProgress; ss.fillRadius = this.fillRadius; return ss; } @Override public void onRestoreInstanceState(Parcelable state) { if (!(state instanceof WheelSavedState)) { super.onRestoreInstanceState(state); return; } WheelSavedState ss = (WheelSavedState) state; super.onRestoreInstanceState(ss.getSuperState()); this.mProgress = ss.mProgress; this.mTargetProgress = ss.mTargetProgress; this.isSpinning = ss.isSpinning; this.spinSpeed = ss.spin |