Java tutorial
/* * Copyright (C) 2014 Qiujuer <qiujuer@live.cn> * WebSite http://www.qiujuer.net * Created 02/25/2015 * Changed 03/01/2015 * Version 2.0.0 * GeniusEditText * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package net.qiujuer.genius.ui.widget; import android.animation.ValueAnimator; import android.annotation.TargetApi; import android.content.Context; import android.content.res.ColorStateList; import android.content.res.Resources; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.PorterDuff; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.os.Build; import android.os.Parcel; import android.os.Parcelable; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.graphics.drawable.DrawableCompat; import android.support.v4.view.MotionEventCompat; import android.support.v4.view.ViewCompat; import android.util.AttributeSet; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.view.ViewParent; import net.qiujuer.genius.ui.GeniusUi; import net.qiujuer.genius.ui.R; import net.qiujuer.genius.ui.drawable.AlmostRippleDrawable; import net.qiujuer.genius.ui.drawable.BalloonMarkerDrawable; import net.qiujuer.genius.ui.drawable.SeekBarDrawable; import net.qiujuer.genius.ui.widget.attribute.Attributes; import net.qiujuer.genius.ui.widget.attribute.SeekBarAttributes; import java.util.Formatter; import java.util.Locale; /** * This abstract class use to SeekBar */ public abstract class GeniusAbsSeekBar extends View implements Attributes.AttributeChangeListener { /** * Interface to transform the current internal value of this GeniusSeekBar to anther one for the visualization. * <p/> * This will be used on the floating bubble to display a different value if needed. * <p/> * Using this in conjunction with {@link #setIndicatorFormatter(String)} you will be able to manipulate the * value seen by the user * * @see #setIndicatorFormatter(String) * @see #setNumericTransformer(GeniusAbsSeekBar.NumericTransformer) */ public static abstract class NumericTransformer { /** * Return the desired value to be shown to the user. * This value will be formatted using the format specified by {@link #setIndicatorFormatter} before displaying it * * @param value The value to be transformed * @return The transformed int */ public abstract int transform(int value); /** * Return the desired value to be shown to the user. * This value will be displayed 'as is' without further formatting. * * @param value The value to be transformed * @return A formatted string */ public String transformToString(int value) { return String.valueOf(value); } /** * Used to indicate which transform will be used. If this method returns true, * {@link #transformToString(int)} will be used, otherwise {@link #transform(int)} * will be used */ public boolean useStringTransform() { return false; } } // Default NumericTransformer class private static class DefaultNumericTransformer extends NumericTransformer { @Override public int transform(int value) { return value; } } //We want to always use a formatter so the indicator numbers are "translated" to specific locales. private static final String DEFAULT_FORMATTER = "%d"; private static final int PRESSED_STATE = android.R.attr.state_pressed; private static final int FOCUSED_STATE = android.R.attr.state_focused; private static final int PROGRESS_ANIMATION_DURATION = 250; private static final int INDICATOR_DELAY_FOR_TAPS = 150; private AlmostRippleDrawable mRipple; private SeekBarDrawable mSeekBarDrawable; private int mMax = 100; private int mMin = 0; private int mValue = 0; private int mKeyProgressIncrement = 1; private boolean mMirrorForRtl = false; private boolean mAllowTrackClick = true; //We use our own Formatter to avoid creating new instances on every progress change private Formatter mFormatter; private String mIndicatorFormatter; private NumericTransformer mNumericTransformer; private StringBuilder mFormatBuilder; private boolean mIsDragging; private int mDragOffset; private Rect mInvalidateRect = new Rect(); private Rect mTempRect = new Rect(); private GeniusPopupIndicator mIndicator; private ValueAnimator mPositionAnimator; private float mAnimationPosition; private int mAnimationTarget; private float mDownX; private float mTouchSlop; private SeekBarAttributes mAttributes; public GeniusAbsSeekBar(Context context) { this(context, null); } public GeniusAbsSeekBar(Context context, AttributeSet attrs) { this(context, attrs, R.style.DefaultSeekBarStyle); } public GeniusAbsSeekBar(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); setFocusable(true); setWillNotDraw(false); mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop(); // New final Resources resources = getResources(); final ColorStateList transparent = ColorStateList.valueOf(Color.TRANSPARENT); mAttributes = new SeekBarAttributes(this, resources); mRipple = new AlmostRippleDrawable(transparent); mRipple.setCallback(this); mSeekBarDrawable = new SeekBarDrawable(transparent, transparent, transparent); mSeekBarDrawable.setCallback(this); if (!isInEditMode()) { mIndicator = new GeniusPopupIndicator(context); mIndicator.setListener(mFloaterListener); } // Set Size setTrackStroke(resources.getDimensionPixelSize(R.dimen.genius_seekBar_trackStroke)); setScrubberStroke(resources.getDimensionPixelSize(R.dimen.genius_seekBar_scrubberStroke)); setThumbRadius(resources.getDimensionPixelSize(R.dimen.genius_seekBar_thumbSize)); setTouchRadius(resources.getDimensionPixelSize(R.dimen.genius_seekBar_touchSize)); setTickRadius(resources.getDimensionPixelSize(R.dimen.genius_seekBar_tickSize)); // Init init(attrs, defStyle); // End setNumericTransformer(new DefaultNumericTransformer()); isRtl(); if (attrs != null) setEnabled(attrs.getAttributeBooleanValue(GeniusUi.androidStyleNameSpace, "enabled", isEnabled())); else setEnabled(isEnabled()); } private void init(AttributeSet attrs, int defStyle) { final Context context = getContext(); final Resources resources = getResources(); final boolean notEdit = !isInEditMode(); ColorStateList trackColor = mAttributes.getTrackColor(); ColorStateList thumbColor = mAttributes.getThumbColor(); ColorStateList scrubberColor = mAttributes.getScrubberColor(); ColorStateList rippleColor = mAttributes.getRippleColor(); ColorStateList indicatorColor = mAttributes.getIndicatorColor(); int textAppearanceId = R.style.DefaultBalloonMarkerTextAppearanceStyle; if (attrs != null) { TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.GeniusSeekBar, R.attr.GeniusSeekBarStyle, defStyle); // Getting common attributes int customTheme = a.getResourceId(R.styleable.GeniusSeekBar_g_theme, Attributes.DEFAULT_THEME); mAttributes.setTheme(customTheme, resources); // Values int max = a.getInteger(R.styleable.GeniusSeekBar_g_max, mMax); int min = a.getInteger(R.styleable.GeniusSeekBar_g_min, mMin); int value = a.getInteger(R.styleable.GeniusSeekBar_g_value, mValue); mMin = min; mMax = Math.max(min + 1, max); mValue = Math.max(min, Math.min(max, value)); // Colors trackColor = a.getColorStateList(R.styleable.GeniusSeekBar_g_trackColor); thumbColor = a.getColorStateList(R.styleable.GeniusSeekBar_g_thumbColor); scrubberColor = a.getColorStateList(R.styleable.GeniusSeekBar_g_scrubberColor); rippleColor = a.getColorStateList(R.styleable.GeniusSeekBar_g_rippleColor); indicatorColor = a.getColorStateList(R.styleable.GeniusSeekBar_g_indicatorBackgroundColor); // Size int tickSize = a.getDimensionPixelSize(R.styleable.GeniusSeekBar_g_tickSize, mSeekBarDrawable.getTickRadius()); int thumbSize = a.getDimensionPixelSize(R.styleable.GeniusSeekBar_g_thumbSize, mSeekBarDrawable.getThumbRadius()); int touchSize = a.getDimensionPixelSize(R.styleable.GeniusSeekBar_g_touchSize, mSeekBarDrawable.getTouchRadius()); int trackStroke = a.getDimensionPixelSize(R.styleable.GeniusSeekBar_g_trackStroke, mSeekBarDrawable.getTrackStroke()); int scrubberStroke = a.getDimensionPixelSize(R.styleable.GeniusSeekBar_g_scrubberStroke, mSeekBarDrawable.getScrubberStroke()); // Set Size setTrackStroke(trackStroke); setScrubberStroke(scrubberStroke); setThumbRadius(thumbSize); setTouchRadius(touchSize); setTickRadius(tickSize); // Other mMirrorForRtl = a.getBoolean(R.styleable.GeniusSeekBar_g_mirrorForRtl, mMirrorForRtl); mAllowTrackClick = a.getBoolean(R.styleable.GeniusSeekBar_g_allowTrackClickToDrag, mAllowTrackClick); mIndicatorFormatter = a.getString(R.styleable.GeniusSeekBar_g_indicatorFormatter); textAppearanceId = a.getResourceId(R.styleable.GeniusSeekBar_g_indicatorTextAppearance, textAppearanceId); a.recycle(); } // Init Colors if (rippleColor == null) { rippleColor = new ColorStateList(new int[][] { new int[] {} }, new int[] { mAttributes.getColor(1) }); } else { mAttributes.setRippleColor(rippleColor); } if (trackColor == null) { int[] colors = new int[] { mAttributes.getColor(4), mAttributes.getColor(5) }; int[][] states = new int[][] { new int[] { android.R.attr.state_enabled }, new int[] { -android.R.attr.state_enabled } }; trackColor = new ColorStateList(states, colors); } else { mAttributes.setTrackColor(trackColor); } if (thumbColor == null) { int[] colors = new int[] { mAttributes.getColor(2), mAttributes.getColor(3) }; int[][] states = new int[][] { new int[] { android.R.attr.state_enabled }, new int[] { -android.R.attr.state_enabled } }; thumbColor = new ColorStateList(states, colors); } else { mAttributes.setThumbColor(thumbColor); } if (scrubberColor == null) { int[] colors = new int[] { mAttributes.getColor(2), mAttributes.getColor(3) }; int[][] states = new int[][] { new int[] { android.R.attr.state_enabled }, new int[] { -android.R.attr.state_enabled } }; scrubberColor = new ColorStateList(states, colors); } else { mAttributes.setScrubberColor(scrubberColor); } if (indicatorColor == null) { int[] colors = new int[] { mAttributes.getColor(2), mAttributes.getColor(1) }; int[][] states = new int[][] { new int[] { android.R.attr.state_enabled }, new int[] { android.R.attr.state_pressed } }; indicatorColor = new ColorStateList(states, colors); } else { mAttributes.setIndicatorColor(indicatorColor); } // Set Colors mRipple.setColorStateList(rippleColor); mSeekBarDrawable.setTrackColor(trackColor); mSeekBarDrawable.setScrubberColor(scrubberColor); mSeekBarDrawable.setThumbColor(thumbColor); if (notEdit) { mIndicator.setIndicatorColor(indicatorColor); mIndicator.setIndicatorTextAppearance(textAppearanceId); } // Set Values mSeekBarDrawable.setNumSegments(mMax - mMin); updateKeyboardRange(); } public void setTrackStroke(int trackStroke) { mSeekBarDrawable.setTrackStroke(trackStroke); } public void setScrubberStroke(int scrubberStroke) { mSeekBarDrawable.setScrubberStroke(scrubberStroke); } public void setThumbRadius(int thumbRadius) { mSeekBarDrawable.setThumbRadius(thumbRadius); if (!isInEditMode()) mIndicator.setIndicatorClosedSize(thumbRadius * 2); } public void setTouchRadius(int touchRadius) { mSeekBarDrawable.setTouchRadius(touchRadius); } public void setTickRadius(int tickRadius) { mSeekBarDrawable.setTickRadius(tickRadius); } /** * Sets the current Indicator formatter string * * @param formatter Value formatter * @see String#format(String, Object...) * @see #setNumericTransformer(GeniusAbsSeekBar.NumericTransformer) */ public void setIndicatorFormatter(@Nullable String formatter) { mIndicatorFormatter = formatter; updateProgressMessage(mValue); } /** * Sets the current {@link GeniusAbsSeekBar.NumericTransformer} * * @param transformer NumericTransformer transformer * @see #getNumericTransformer() */ public void setNumericTransformer(@Nullable NumericTransformer transformer) { mNumericTransformer = transformer != null ? transformer : new DefaultNumericTransformer(); //We need to refresh the PopupIndicator view if (!isInEditMode()) { if (mNumericTransformer.useStringTransform()) { mIndicator.setIndicatorSizes(mNumericTransformer.transformToString(mMax)); } else { mIndicator.setIndicatorSizes(convertValueToMessage(mNumericTransformer.transform(mMax))); } } updateProgressMessage(mValue); } /** * Retrieves the current {@link GeniusAbsSeekBar.NumericTransformer} * * @return NumericTransformer * @see #setNumericTransformer */ public NumericTransformer getNumericTransformer() { return mNumericTransformer; } /** * Sets the maximum value for this GeniusSeekBar * if the supplied argument is smaller than the Current MIN value, * the MIN value will be set to MAX-1 * <p/> * <p> * Also if the current progress is out of the new range, it will be set to MIN * </p> * * @param max Progress max value * @see #setMin(int) * @see #setProgress(int) */ public void setMax(int max) { mMax = max; if (mMax < mMin) { setMin(mMax - 1); } updateKeyboardRange(); mSeekBarDrawable.setNumSegments(mMax - mMin); if (mValue < mMin || mValue > mMax) { setProgress(mMin); } } /** * Get the max value * * @return Progress max value */ public int getMax() { return mMax; } /** * Sets the minimum value for this GeniusSeekBar * if the supplied argument is bigger than the Current MAX value, * the MAX value will be set to MIN+1 * <p> * Also if the current progress is out of the new range, it will be set to MIN * </p> * * @param min Progress min value * @see #setMax(int) * @see #setProgress(int) */ public void setMin(int min) { mMin = min; if (mMin > mMax) { setMax(mMin + 1); } updateKeyboardRange(); mSeekBarDrawable.setNumSegments(mMax - mMin); if (mValue < mMin || mValue > mMax) { setProgress(mMin); } } /** * Get the min value * * @return Progress min value */ public int getMin() { return mMin; } /** * Sets the current progress for this GeniusSeekBar * The supplied argument will be capped to the current MIN-MAX range * * @param progress Progress Value * @see #setMax(int) * @see #setMin(int) */ public void setProgress(int progress) { setProgress(progress, false, -1); } /** * Get the current progress * * @return the current progress :-P */ public int getProgress() { return mValue; } /** * Sets the color of the seek thumb, as well as the color of the popup indicator. * * @param startColor The color the seek thumb will be changed to * @param endColor The color the popup indicator will be changed to */ public void setThumbColor(int startColor, int endColor) { mSeekBarDrawable.setThumbColor(ColorStateList.valueOf(startColor)); mIndicator.setColors(startColor, endColor); } /** * Sets the color of the SeekBar scrubber * * @param color The color the track will be changed to */ public void setScrubberColor(int color) { mSeekBarDrawable.setColorFilter(color, PorterDuff.Mode.SRC_ATOP); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int widthSize = MeasureSpec.getSize(widthMeasureSpec); int height = mSeekBarDrawable.getIntrinsicHeight() + getPaddingTop() + getPaddingBottom(); setMeasuredDimension(widthSize, height); } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { super.onLayout(changed, left, top, right, bottom); if (changed) { removeCallbacks(mShowIndicatorRunnable); if (!isInEditMode()) { mIndicator.dismissComplete(); } updateFromDrawableState(); } } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); mSeekBarDrawable.setBounds(getPaddingLeft(), getPaddingTop(), getWidth() - getPaddingRight(), getHeight() - getPaddingBottom()); //Update the thumb position after size changed updateThumbPosForScale(-1); } @Override protected synchronized void onDraw(Canvas canvas) { super.onDraw(canvas); mSeekBarDrawable.draw(canvas); mRipple.draw(canvas); } @Override public boolean onTouchEvent(@NonNull MotionEvent event) { if (!isEnabled()) { return false; } int actionMasked = MotionEventCompat.getActionMasked(event); switch (actionMasked) { case MotionEvent.ACTION_DOWN: mDownX = event.getX(); startDragging(event, isInScrollingContainer()); break; case MotionEvent.ACTION_MOVE: if (mIsDragging) { updateDragging(event); } else { final float x = event.getX(); if (Math.abs(x - mDownX) > mTouchSlop) { startDragging(event, false); } } break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: if (mSeekBarDrawable.isHaveTick()) animateSetProgress(); onStopTrackingTouch(); break; } return true; } @Override public boolean onKeyDown(int keyCode, @NonNull KeyEvent event) { boolean handled = false; boolean isAdd = false; if (isEnabled()) { int progress = getAnimatedProgress(); switch (keyCode) { case KeyEvent.KEYCODE_DPAD_LEFT: handled = true; isAdd = isRtl(); break; case KeyEvent.KEYCODE_DPAD_RIGHT: handled = true; isAdd = !isRtl(); break; } if (handled) { if (isAdd) { if (progress < mMax) animateSetProgress(progress + mKeyProgressIncrement); } else { if (progress > mMin) animateSetProgress(progress - mKeyProgressIncrement); } } } return handled || super.onKeyDown(keyCode, event); } @Override protected boolean verifyDrawable(Drawable who) { return who == mSeekBarDrawable || who == mRipple || super.verifyDrawable(who); } @Override protected void drawableStateChanged() { super.drawableStateChanged(); updateFromDrawableState(); } @Override protected void onDetachedFromWindow() { super.onDetachedFromWindow(); removeCallbacks(mShowIndicatorRunnable); if (!isInEditMode()) { mIndicator.dismissComplete(); } } @Override public void onThemeChange() { init(null, R.style.DefaultSeekBarStyle); } @Override public SeekBarAttributes getAttributes() { return mAttributes; } @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) public boolean isRtl() { boolean isRtl = (ViewCompat.getLayoutDirection(this) == LAYOUT_DIRECTION_RTL) && mMirrorForRtl; mSeekBarDrawable.setRtl(isRtl); return isRtl; } private boolean isInScrollingContainer() { ViewParent p = getParent(); while (p != null && p instanceof ViewGroup) { if (((ViewGroup) p).shouldDelayChildPressedState()) { return true; } p = p.getParent(); } return false; } private void setProgress(int value, boolean fromUser, float scale) { value = Math.max(mMin, Math.min(mMax, value)); if (isAnimationRunning()) { mPositionAnimator.cancel(); } if (mValue != value) { mValue = value; onProgressChanged(value, fromUser); updateProgressMessage(value); } updateThumbPosForScale(scale); } private void updateKeyboardRange() { int range = mMax - mMin; if ((mKeyProgressIncrement == 0) || (range / mKeyProgressIncrement > 20)) { // It will take the user too long to change this via keys, change it // to something more reasonable mKeyProgressIncrement = Math.max(1, Math.round((float) range / 20)); } } private void updateFromDrawableState() { int[] state = getDrawableState(); boolean focused = false; boolean pressed = false; for (int i : state) { if (i == FOCUSED_STATE) { focused = true; } else if (i == PRESSED_STATE) { pressed = true; } } if (isEnabled() && (focused || pressed)) { //We want to add a small delay here to avoid //POPing in/out on simple taps removeCallbacks(mShowIndicatorRunnable); postDelayed(mShowIndicatorRunnable, INDICATOR_DELAY_FOR_TAPS); } else { hideFloater(); } mRipple.setState(state); mSeekBarDrawable.setState(state); } private void updateProgressMessage(int value) { if (!isInEditMode()) { if (mNumericTransformer.useStringTransform()) { mIndicator.setValue(mNumericTransformer.transformToString(value)); } else { mIndicator.setValue(convertValueToMessage(mNumericTransformer.transform(value))); } } } private String convertValueToMessage(int value) { String format = mIndicatorFormatter != null ? mIndicatorFormatter : DEFAULT_FORMATTER; //We're trying to re-use the Formatter here to avoid too much memory allocations //But I'm not completey sure if it's doing anything good... :( //Previously, this condition was wrong so the Formatter was always re-created //But as I fixed the condition, the formatter started outputting trash characters from previous //calls, so I mark the StringBuilder as empty before calling format again. //Anyways, I see the memory usage still go up on every call to this method //and I have no clue on how to fix that... damn Strings... if (mFormatter == null || !mFormatter.locale().equals(Locale.getDefault())) { int bufferSize = format.length() + String.valueOf(mMax).length(); if (mFormatBuilder == null) { mFormatBuilder = new StringBuilder(bufferSize); } else { mFormatBuilder.ensureCapacity(bufferSize); } mFormatter = new Formatter(mFormatBuilder, Locale.getDefault()); } else { mFormatBuilder.setLength(0); } return mFormatter.format(format, value).toString(); } private void startDragging(MotionEvent ev, boolean ignoreTrackIfInScrollContainer) { final Rect bounds = mTempRect; mSeekBarDrawable.copyTouchBounds(bounds); //Grow the current thumb rect for a bigger touch area boolean isDragging = (bounds.contains((int) ev.getX(), (int) ev.getY())); if (!isDragging && mAllowTrackClick && !ignoreTrackIfInScrollContainer) { //If the user clicked outside the thumb, we compute the current position //and force an immediate drag to it. isDragging = true; mDragOffset = bounds.width() / 2; updateDragging(ev); //As the thumb may have moved, get the bounds again mSeekBarDrawable.setHotScale(mSeekBarDrawable.getHotScale()); } if (isDragging) { onStartTrackingTouch(); setHotspot(ev.getX(), ev.getY()); mDragOffset = (int) (ev.getX() - bounds.centerX()); } } private int getAnimatedProgress() { return isAnimationRunning() ? getAnimationTarget() : getProgress(); } private boolean isAnimationRunning() { return mPositionAnimator != null && mPositionAnimator.isRunning(); } private void animateSetProgress() { final float curProgress = isAnimationRunning() ? getAnimationPosition() : mSeekBarDrawable.getHotScale() * (mMax - mMin) + mMin; mAnimationTarget = getProgress(); animateSetProgress(curProgress); } private void animateSetProgress(int progress) { final float curProgress = isAnimationRunning() ? getAnimationPosition() : getProgress(); if (progress < mMin) { progress = mMin; } else if (progress > mMax) { progress = mMax; } mAnimationTarget = progress; animateSetProgress(curProgress); } private void animateSetProgress(float curProgress) { if (mPositionAnimator != null) { mPositionAnimator.cancel(); mPositionAnimator.setFloatValues(curProgress, mAnimationTarget); } else { mPositionAnimator = ValueAnimator.ofFloat(curProgress, mAnimationTarget); mPositionAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { mAnimationPosition = (Float) animation.getAnimatedValue(); float currentScale = (mAnimationPosition - mMin) / (float) (mMax - mMin); updateProgressFromAnimation(currentScale); } }); mPositionAnimator.setDuration(PROGRESS_ANIMATION_DURATION); } mPositionAnimator.start(); } private int getAnimationTarget() { return mAnimationTarget; } private float getAnimationPosition() { return mAnimationPosition; } private void updateDragging(MotionEvent ev) { setHotspot(ev.getX(), ev.getY()); int x = (int) ev.getX(); int left = getPaddingLeft(); int right = getWidth() - getPaddingRight(); int posX = x - mDragOffset; if (posX < left) { posX = left; } else if (posX > right) { posX = right; } int available = right - left; float scale = (float) (posX - left) / (float) available; if (isRtl()) { scale = 1f - scale; } int progress = Math.round((scale * (mMax - mMin)) + mMin); setProgress(progress, true, scale); } private void updateProgressFromAnimation(float scale) { int progress = Math.round((scale * (mMax - mMin)) + mMin); //we don't want to just call setProgress here to avoid the animation being cancelled, //and this position is not bound to a real progress value but interpolated if (progress != getProgress()) { mValue = progress; onProgressChanged(mValue, true); updateProgressMessage(progress); } updateThumbPosForScale(scale); } private void updateThumbPosForScale(float scale) { // SeekBar if (scale == -1) { scale = (mValue - mMin) / (float) (mMax - mMin); } mSeekBarDrawable.setHotScale(scale); // Indicator Move final Rect finalBounds = mTempRect; mSeekBarDrawable.copyTouchBounds(finalBounds); if (!isInEditMode()) { mIndicator.move(finalBounds.centerX()); } // Ripple mRipple.setBounds(finalBounds.left, finalBounds.top, finalBounds.right, finalBounds.bottom); // Invalidate mSeekBarDrawable.copyBounds(mInvalidateRect); invalidate(mInvalidateRect); } private void setHotspot(float x, float y) { DrawableCompat.setHotspot(mRipple, x, y); } private void attemptClaimDrag() { ViewParent parent = getParent(); if (parent != null) { parent.requestDisallowInterceptTouchEvent(true); } } private void showFloater() { if (!isInEditMode()) { mSeekBarDrawable.animateToPressed(); mIndicator.showIndicator(this, mSeekBarDrawable.getPosPoint()); onShowBubble(); } } private void hideFloater() { removeCallbacks(mShowIndicatorRunnable); if (!isInEditMode()) { mIndicator.dismiss(); onHideBubble(); } } private Runnable mShowIndicatorRunnable = new Runnable() { @Override public void run() { showFloater(); } }; private final BalloonMarkerDrawable.MarkerAnimationListener mFloaterListener = new BalloonMarkerDrawable.MarkerAnimationListener() { @Override public void onClosingComplete() { mSeekBarDrawable.animateToNormal(); } @Override public void onOpeningComplete() { } }; /** * When the {@link GeniusAbsSeekBar} enters pressed or focused state * the bubble with the value will be shown, and this method called * <p> * Subclasses may override this to add functionality around this event * </p> */ protected void onShowBubble() { } /** * When the {@link GeniusAbsSeekBar} exits pressed or focused state * the bubble with the value will be hidden, and this method called * <p> * Subclasses may override this to add functionality around this event * </p> */ protected void onHideBubble() { } /** * This is called when the user has started touching this widget. */ protected void onStartTrackingTouch() { mIsDragging = true; setPressed(true); attemptClaimDrag(); } /** * This is called when the user either releases his touch or the touch is * canceled. */ protected void onStopTrackingTouch() { mIsDragging = false; setPressed(false); } /** * When the {@link GeniusAbsSeekBar} value changes this method is called * <p> * Subclasses may override this to add functionality around this event * without having to specify a listener * </p> */ protected void onProgressChanged(int value, boolean fromUser) { } @Override protected Parcelable onSaveInstanceState() { Parcelable superState = super.onSaveInstanceState(); CustomState state = new CustomState(superState); state.progress = getProgress(); state.max = mMax; state.min = mMin; return state; } @Override protected void onRestoreInstanceState(Parcelable state) { if (state == null || !state.getClass().equals(CustomState.class)) { super.onRestoreInstanceState(state); return; } CustomState customState = (CustomState) state; setMin(customState.min); setMax(customState.max); setProgress(customState.progress); super.onRestoreInstanceState(customState.getSuperState()); } static class CustomState extends BaseSavedState { private int progress; private int max; private int min; public CustomState(Parcel source) { super(source); progress = source.readInt(); max = source.readInt(); min = source.readInt(); } public CustomState(Parcelable superState) { super(superState); } @Override public void writeToParcel(@NonNull Parcel dest, int flags) { super.writeToParcel(dest, flags); dest.writeInt(progress); dest.writeInt(max); dest.writeInt(min); } public static final Creator<CustomState> CREATOR = new Creator<CustomState>() { @Override public CustomState[] newArray(int size) { return new CustomState[size]; } @Override public CustomState createFromParcel(Parcel incoming) { return new CustomState(incoming); } }; } }