();
private AccessibilityEventSender mAccessibilityEventSender;
/**
* Create a new progress bar with range 0...100 and initial progress of 0.
* @param context the application environment
*/
public ProgressBar(Context context) {
this(context, null);
}
public ProgressBar(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.progressBarStyle);
}
public ProgressBar(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public ProgressBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
mUiThreadId = Thread.currentThread().getId();
initProgressBar();
final TypedArray a = context.obtainStyledAttributes(
attrs, R.styleable.ProgressBar, defStyleAttr, defStyleRes);
mNoInvalidate = true;
Drawable drawable = a.getDrawable(R.styleable.ProgressBar_progressDrawable);
if (drawable != null) {
// Calling this method can set mMaxHeight, make sure the corresponding
// XML attribute for mMaxHeight is read after calling this method
setProgressDrawableTiled(drawable);
}
mDuration = a.getInt(R.styleable.ProgressBar_indeterminateDuration, mDuration);
mMinWidth = a.getDimensionPixelSize(R.styleable.ProgressBar_minWidth, mMinWidth);
mMaxWidth = a.getDimensionPixelSize(R.styleable.ProgressBar_maxWidth, mMaxWidth);
mMinHeight = a.getDimensionPixelSize(R.styleable.ProgressBar_minHeight, mMinHeight);
mMaxHeight = a.getDimensionPixelSize(R.styleable.ProgressBar_maxHeight, mMaxHeight);
mBehavior = a.getInt(R.styleable.ProgressBar_indeterminateBehavior, mBehavior);
final int resID = a.getResourceId(
com.android.internal.R.styleable.ProgressBar_interpolator,
android.R.anim.linear_interpolator); // default to linear interpolator
if (resID > 0) {
setInterpolator(context, resID);
}
setMax(a.getInt(R.styleable.ProgressBar_max, mMax));
setProgress(a.getInt(R.styleable.ProgressBar_progress, mProgress));
setSecondaryProgress(
a.getInt(R.styleable.ProgressBar_secondaryProgress, mSecondaryProgress));
drawable = a.getDrawable(R.styleable.ProgressBar_indeterminateDrawable);
if (drawable != null) {
setIndeterminateDrawableTiled(drawable);
}
mOnlyIndeterminate = a.getBoolean(
R.styleable.ProgressBar_indeterminateOnly, mOnlyIndeterminate);
mNoInvalidate = false;
setIndeterminate(mOnlyIndeterminate || a.getBoolean(
R.styleable.ProgressBar_indeterminate, mIndeterminate));
mMirrorForRtl = a.getBoolean(R.styleable.ProgressBar_mirrorForRtl, mMirrorForRtl);
a.recycle();
// If not explicitly specified this view is important for accessibility.
if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
}
}
/**
* Converts a drawable to a tiled version of itself. It will recursively
* traverse layer and state list drawables.
*/
private Drawable tileify(Drawable drawable, boolean clip) {
if (drawable instanceof LayerDrawable) {
LayerDrawable background = (LayerDrawable) drawable;
final int N = background.getNumberOfLayers();
Drawable[] outDrawables = new Drawable[N];
for (int i = 0; i < N; i++) {
int id = background.getId(i);
outDrawables[i] = tileify(background.getDrawable(i),
(id == R.id.progress || id == R.id.secondaryProgress));
}
LayerDrawable newBg = new LayerDrawable(outDrawables);
for (int i = 0; i < N; i++) {
newBg.setId(i, background.getId(i));
}
return newBg;
} else if (drawable instanceof StateListDrawable) {
StateListDrawable in = (StateListDrawable) drawable;
StateListDrawable out = new StateListDrawable();
int numStates = in.getStateCount();
for (int i = 0; i < numStates; i++) {
out.addState(in.getStateSet(i), tileify(in.getStateDrawable(i), clip));
}
return out;
} else if (drawable instanceof BitmapDrawable) {
final BitmapDrawable bitmap = (BitmapDrawable) drawable;
final Bitmap tileBitmap = bitmap.getBitmap();
if (mSampleTile == null) {
mSampleTile = tileBitmap;
}
final ShapeDrawable shapeDrawable = new ShapeDrawable(getDrawableShape());
final BitmapShader bitmapShader = new BitmapShader(tileBitmap,
Shader.TileMode.REPEAT, Shader.TileMode.CLAMP);
shapeDrawable.getPaint().setShader(bitmapShader);
// Ensure the color filter and tint are propagated.
shapeDrawable.setTint(bitmap.getTint());
shapeDrawable.setTintMode(bitmap.getTintMode());
shapeDrawable.setColorFilter(bitmap.getColorFilter());
return clip ? new ClipDrawable(
shapeDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL) : shapeDrawable;
}
return drawable;
}
Shape getDrawableShape() {
final float[] roundedCorners = new float[] { 5, 5, 5, 5, 5, 5, 5, 5 };
return new RoundRectShape(roundedCorners, null, null);
}
/**
* Convert a AnimationDrawable for use as a barberpole animation.
* Each frame of the animation is wrapped in a ClipDrawable and
* given a tiling BitmapShader.
*/
private Drawable tileifyIndeterminate(Drawable drawable) {
if (drawable instanceof AnimationDrawable) {
AnimationDrawable background = (AnimationDrawable) drawable;
final int N = background.getNumberOfFrames();
AnimationDrawable newBg = new AnimationDrawable();
newBg.setOneShot(background.isOneShot());
for (int i = 0; i < N; i++) {
Drawable frame = tileify(background.getFrame(i), true);
frame.setLevel(10000);
newBg.addFrame(frame, background.getDuration(i));
}
newBg.setLevel(10000);
drawable = newBg;
}
return drawable;
}
/**
*
* Initialize the progress bar's default values:
*
*
* - progress = 0
* - max = 100
* - animation duration = 4000 ms
* - indeterminate = false
* - behavior = repeat
*
*/
private void initProgressBar() {
mMax = 100;
mProgress = 0;
mSecondaryProgress = 0;
mIndeterminate = false;
mOnlyIndeterminate = false;
mDuration = 4000;
mBehavior = AlphaAnimation.RESTART;
mMinWidth = 24;
mMaxWidth = 48;
mMinHeight = 24;
mMaxHeight = 48;
}
/**
* Indicate whether this progress bar is in indeterminate mode.
*
* @return true if the progress bar is in indeterminate mode
*/
@ViewDebug.ExportedProperty(category = "progress")
public synchronized boolean isIndeterminate() {
return mIndeterminate;
}
/**
* Change the indeterminate mode for this progress bar. In indeterminate
* mode, the progress is ignored and the progress bar shows an infinite
* animation instead.
*
* If this progress bar's style only supports indeterminate mode (such as the circular
* progress bars), then this will be ignored.
*
* @param indeterminate true to enable the indeterminate mode
*/
@android.view.RemotableViewMethod
public synchronized void setIndeterminate(boolean indeterminate) {
if ((!mOnlyIndeterminate || !mIndeterminate) && indeterminate != mIndeterminate) {
mIndeterminate = indeterminate;
if (indeterminate) {
// swap between indeterminate and regular backgrounds
mCurrentDrawable = mIndeterminateDrawable;
startAnimation();
} else {
mCurrentDrawable = mProgressDrawable;
stopAnimation();
}
}
}
/**
* Get the drawable used to draw the progress bar in
* indeterminate mode.
*
* @return a {@link android.graphics.drawable.Drawable} instance
*
* @see #setIndeterminateDrawable(android.graphics.drawable.Drawable)
* @see #setIndeterminate(boolean)
*/
public Drawable getIndeterminateDrawable() {
return mIndeterminateDrawable;
}
/**
* Define the drawable used to draw the progress bar in indeterminate mode.
*
* @param d the new drawable
* @see #getIndeterminateDrawable()
* @see #setIndeterminate(boolean)
*/
public void setIndeterminateDrawable(Drawable d) {
if (d != null) {
d.setCallback(this);
}
mIndeterminateDrawable = d;
if (mIndeterminateDrawable != null && canResolveLayoutDirection()) {
mIndeterminateDrawable.setLayoutDirection(getLayoutDirection());
}
if (mIndeterminate) {
mCurrentDrawable = d;
postInvalidate();
}
}
/**
* Define the tileable drawable used to draw the progress bar in
* indeterminate mode.
*
* If the drawable is a BitmapDrawable or contains BitmapDrawables, a
* tiled copy will be generated for display as a progress bar.
*
* @param d the new drawable
* @see #getIndeterminateDrawable()
* @see #setIndeterminate(boolean)
*/
public void setIndeterminateDrawableTiled(Drawable d) {
if (d != null) {
d = tileifyIndeterminate(d);
}
setIndeterminateDrawable(d);
}
/**
*
Get the drawable used to draw the progress bar in
* progress mode.
*
* @return a {@link android.graphics.drawable.Drawable} instance
*
* @see #setProgressDrawable(android.graphics.drawable.Drawable)
* @see #setIndeterminate(boolean)
*/
public Drawable getProgressDrawable() {
return mProgressDrawable;
}
/**
* Define the drawable used to draw the progress bar in progress mode.
*
* @param d the new drawable
* @see #getProgressDrawable()
* @see #setIndeterminate(boolean)
*/
public void setProgressDrawable(Drawable d) {
boolean needUpdate;
if (mProgressDrawable != null && d != mProgressDrawable) {
mProgressDrawable.setCallback(null);
needUpdate = true;
} else {
needUpdate = false;
}
if (d != null) {
d.setCallback(this);
if (canResolveLayoutDirection()) {
d.setLayoutDirection(getLayoutDirection());
}
// Make sure the ProgressBar is always tall enough
int drawableHeight = d.getMinimumHeight();
if (mMaxHeight < drawableHeight) {
mMaxHeight = drawableHeight;
requestLayout();
}
}
mProgressDrawable = d;
if (!mIndeterminate) {
mCurrentDrawable = d;
postInvalidate();
}
if (needUpdate) {
updateDrawableBounds(getWidth(), getHeight());
updateDrawableState();
doRefreshProgress(R.id.progress, mProgress, false, false);
doRefreshProgress(R.id.secondaryProgress, mSecondaryProgress, false, false);
}
}
/**
* Define the tileable drawable used to draw the progress bar in
* progress mode.
*
* If the drawable is a BitmapDrawable or contains BitmapDrawables, a
* tiled copy will be generated for display as a progress bar.
*
* @param d the new drawable
* @see #getProgressDrawable()
* @see #setIndeterminate(boolean)
*/
public void setProgressDrawableTiled(Drawable d) {
if (d != null) {
d = tileify(d, false);
}
setProgressDrawable(d);
}
/**
* @return The drawable currently used to draw the progress bar
*/
Drawable getCurrentDrawable() {
return mCurrentDrawable;
}
@Override
protected boolean verifyDrawable(Drawable who) {
return who == mProgressDrawable || who == mIndeterminateDrawable
|| super.verifyDrawable(who);
}
@Override
public void jumpDrawablesToCurrentState() {
super.jumpDrawablesToCurrentState();
if (mProgressDrawable != null) mProgressDrawable.jumpToCurrentState();
if (mIndeterminateDrawable != null) mIndeterminateDrawable.jumpToCurrentState();
}
/**
* @hide
*/
@Override
public void onResolveDrawables(int layoutDirection) {
final Drawable d = mCurrentDrawable;
if (d != null) {
d.setLayoutDirection(layoutDirection);
}
if (mIndeterminateDrawable != null) {
mIndeterminateDrawable.setLayoutDirection(layoutDirection);
}
if (mProgressDrawable != null) {
mProgressDrawable.setLayoutDirection(layoutDirection);
}
}
@Override
public void postInvalidate() {
if (!mNoInvalidate) {
super.postInvalidate();
}
}
private class RefreshProgressRunnable implements Runnable {
public void run() {
synchronized (ProgressBar.this) {
final int count = mRefreshData.size();
for (int i = 0; i < count; i++) {
final RefreshData rd = mRefreshData.get(i);
doRefreshProgress(rd.id, rd.progress, rd.fromUser, true);
rd.recycle();
}
mRefreshData.clear();
mRefreshIsPosted = false;
}
}
}
private static class RefreshData {
private static final int POOL_MAX = 24;
private static final SynchronizedPool sPool =
new SynchronizedPool(POOL_MAX);
public int id;
public int progress;
public boolean fromUser;
public static RefreshData obtain(int id, int progress, boolean fromUser) {
RefreshData rd = sPool.acquire();
if (rd == null) {
rd = new RefreshData();
}
rd.id = id;
rd.progress = progress;
rd.fromUser = fromUser;
return rd;
}
public void recycle() {
sPool.release(this);
}
}
private synchronized void doRefreshProgress(int id, int progress, boolean fromUser,
boolean callBackToApp) {
float scale = mMax > 0 ? (float) progress / (float) mMax : 0;
final Drawable d = mCurrentDrawable;
if (d != null) {
Drawable progressDrawable = null;
if (d instanceof LayerDrawable) {
progressDrawable = ((LayerDrawable) d).findDrawableByLayerId(id);
if (progressDrawable != null && canResolveLayoutDirection()) {
progressDrawable.setLayoutDirection(getLayoutDirection());
}
}
final int level = (int) (scale * MAX_LEVEL);
(progressDrawable != null ? progressDrawable : d).setLevel(level);
} else {
invalidate();
}
if (callBackToApp && id == R.id.progress) {
onProgressRefresh(scale, fromUser);
}
}
void onProgressRefresh(float scale, boolean fromUser) {
if (AccessibilityManager.getInstance(mContext).isEnabled()) {
scheduleAccessibilityEventSender();
}
}
private synchronized void refreshProgress(int id, int progress, boolean fromUser) {
if (mUiThreadId == Thread.currentThread().getId()) {
doRefreshProgress(id, progress, fromUser, true);
} else {
if (mRefreshProgressRunnable == null) {
mRefreshProgressRunnable = new RefreshProgressRunnable();
}
final RefreshData rd = RefreshData.obtain(id, progress, fromUser);
mRefreshData.add(rd);
if (mAttached && !mRefreshIsPosted) {
post(mRefreshProgressRunnable);
mRefreshIsPosted = true;
}
}
}
/**
* Set the current progress to the specified value. Does not do anything
* if the progress bar is in indeterminate mode.
*
* @param progress the new progress, between 0 and {@link #getMax()}
*
* @see #setIndeterminate(boolean)
* @see #isIndeterminate()
* @see #getProgress()
* @see #incrementProgressBy(int)
*/
@android.view.RemotableViewMethod
public synchronized void setProgress(int progress) {
setProgress(progress, false);
}
@android.view.RemotableViewMethod
synchronized void setProgress(int progress, boolean fromUser) {
if (mIndeterminate) {
return;
}
if (progress < 0) {
progress = 0;
}
if (progress > mMax) {
progress = mMax;
}
if (progress != mProgress) {
mProgress = progress;
refreshProgress(R.id.progress, mProgress, fromUser);
}
}
/**
*
* Set the current secondary progress to the specified value. Does not do
* anything if the progress bar is in indeterminate mode.
*
*
* @param secondaryProgress the new secondary progress, between 0 and {@link #getMax()}
* @see #setIndeterminate(boolean)
* @see #isIndeterminate()
* @see #getSecondaryProgress()
* @see #incrementSecondaryProgressBy(int)
*/
@android.view.RemotableViewMethod
public synchronized void setSecondaryProgress(int secondaryProgress) {
if (mIndeterminate) {
return;
}
if (secondaryProgress < 0) {
secondaryProgress = 0;
}
if (secondaryProgress > mMax) {
secondaryProgress = mMax;
}
if (secondaryProgress != mSecondaryProgress) {
mSecondaryProgress = secondaryProgress;
refreshProgress(R.id.secondaryProgress, mSecondaryProgress, false);
}
}
/**
* Get the progress bar's current level of progress. Return 0 when the
* progress bar is in indeterminate mode.
*
* @return the current progress, between 0 and {@link #getMax()}
*
* @see #setIndeterminate(boolean)
* @see #isIndeterminate()
* @see #setProgress(int)
* @see #setMax(int)
* @see #getMax()
*/
@ViewDebug.ExportedProperty(category = "progress")
public synchronized int getProgress() {
return mIndeterminate ? 0 : mProgress;
}
/**
* Get the progress bar's current level of secondary progress. Return 0 when the
* progress bar is in indeterminate mode.
*
* @return the current secondary progress, between 0 and {@link #getMax()}
*
* @see #setIndeterminate(boolean)
* @see #isIndeterminate()
* @see #setSecondaryProgress(int)
* @see #setMax(int)
* @see #getMax()
*/
@ViewDebug.ExportedProperty(category = "progress")
public synchronized int getSecondaryProgress() {
return mIndeterminate ? 0 : mSecondaryProgress;
}
/**
* Return the upper limit of this progress bar's range.
*
* @return a positive integer
*
* @see #setMax(int)
* @see #getProgress()
* @see #getSecondaryProgress()
*/
@ViewDebug.ExportedProperty(category = "progress")
public synchronized int getMax() {
return mMax;
}
/**
* Set the range of the progress bar to 0...max.
*
* @param max the upper range of this progress bar
*
* @see #getMax()
* @see #setProgress(int)
* @see #setSecondaryProgress(int)
*/
@android.view.RemotableViewMethod
public synchronized void setMax(int max) {
if (max < 0) {
max = 0;
}
if (max != mMax) {
mMax = max;
postInvalidate();
if (mProgress > max) {
mProgress = max;
}
refreshProgress(R.id.progress, mProgress, false);
}
}
/**
* Increase the progress bar's progress by the specified amount.
*
* @param diff the amount by which the progress must be increased
*
* @see #setProgress(int)
*/
public synchronized final void incrementProgressBy(int diff) {
setProgress(mProgress + diff);
}
/**
* Increase the progress bar's secondary progress by the specified amount.
*
* @param diff the amount by which the secondary progress must be increased
*
* @see #setSecondaryProgress(int)
*/
public synchronized final void incrementSecondaryProgressBy(int diff) {
setSecondaryProgress(mSecondaryProgress + diff);
}
/**
* Start the indeterminate progress animation.
*/
void startAnimation() {
if (getVisibility() != VISIBLE) {
return;
}
if (mIndeterminateDrawable instanceof Animatable) {
mShouldStartAnimationDrawable = true;
mHasAnimation = false;
} else {
mHasAnimation = true;
if (mInterpolator == null) {
mInterpolator = new LinearInterpolator();
}
if (mTransformation == null) {
mTransformation = new Transformation();
} else {
mTransformation.clear();
}
if (mAnimation == null) {
mAnimation = new AlphaAnimation(0.0f, 1.0f);
} else {
mAnimation.reset();
}
mAnimation.setRepeatMode(mBehavior);
mAnimation.setRepeatCount(Animation.INFINITE);
mAnimation.setDuration(mDuration);
mAnimation.setInterpolator(mInterpolator);
mAnimation.setStartTime(Animation.START_ON_FIRST_FRAME);
}
postInvalidate();
}
/**
* Stop the indeterminate progress animation.
*/
void stopAnimation() {
mHasAnimation = false;
if (mIndeterminateDrawable instanceof Animatable) {
((Animatable) mIndeterminateDrawable).stop();
mShouldStartAnimationDrawable = false;
}
postInvalidate();
}
/**
* Sets the acceleration curve for the indeterminate animation.
* The interpolator is loaded as a resource from the specified context.
*
* @param context The application environment
* @param resID The resource identifier of the interpolator to load
*/
public void setInterpolator(Context context, int resID) {
setInterpolator(AnimationUtils.loadInterpolator(context, resID));
}
/**
* Sets the acceleration curve for the indeterminate animation.
* Defaults to a linear interpolation.
*
* @param interpolator The interpolator which defines the acceleration curve
*/
public void setInterpolator(Interpolator interpolator) {
mInterpolator = interpolator;
}
/**
* Gets the acceleration curve type for the indeterminate animation.
*
* @return the {@link Interpolator} associated to this animation
*/
public Interpolator getInterpolator() {
return mInterpolator;
}
@Override
@RemotableViewMethod
public void setVisibility(int v) {
if (getVisibility() != v) {
super.setVisibility(v);
if (mIndeterminate) {
// let's be nice with the UI thread
if (v == GONE || v == INVISIBLE) {
stopAnimation();
} else {
startAnimation();
}
}
}
}
@Override
protected void onVisibilityChanged(View changedView, int visibility) {
super.onVisibilityChanged(changedView, visibility);
if (mIndeterminate) {
// let's be nice with the UI thread
if (visibility == GONE || visibility == INVISIBLE) {
stopAnimation();
} else {
startAnimation();
}
}
}
@Override
public void invalidateDrawable(Drawable dr) {
if (!mInDrawing) {
if (verifyDrawable(dr)) {
final Rect dirty = dr.getBounds();
final int scrollX = mScrollX + mPaddingLeft;
final int scrollY = mScrollY + mPaddingTop;
invalidate(dirty.left + scrollX, dirty.top + scrollY,
dirty.right + scrollX, dirty.bottom + scrollY);
} else {
super.invalidateDrawable(dr);
}
}
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
updateDrawableBounds(w, h);
}
private void updateDrawableBounds(int w, int h) {
// onDraw will translate the canvas so we draw starting at 0,0.
// Subtract out padding for the purposes of the calculations below.
w -= mPaddingRight + mPaddingLeft;
h -= mPaddingTop + mPaddingBottom;
int right = w;
int bottom = h;
int top = 0;
int left = 0;
if (mIndeterminateDrawable != null) {
// Aspect ratio logic does not apply to AnimationDrawables
if (mOnlyIndeterminate && !(mIndeterminateDrawable instanceof AnimationDrawable)) {
// Maintain aspect ratio. Certain kinds of animated drawables
// get very confused otherwise.
final int intrinsicWidth = mIndeterminateDrawable.getIntrinsicWidth();
final int intrinsicHeight = mIndeterminateDrawable.getIntrinsicHeight();
final float intrinsicAspect = (float) intrinsicWidth / intrinsicHeight;
final float boundAspect = (float) w / h;
if (intrinsicAspect != boundAspect) {
if (boundAspect > intrinsicAspect) {
// New width is larger. Make it smaller to match height.
final int width = (int) (h * intrinsicAspect);
left = (w - width) / 2;
right = left + width;
} else {
// New height is larger. Make it smaller to match width.
final int height = (int) (w * (1 / intrinsicAspect));
top = (h - height) / 2;
bottom = top + height;
}
}
}
if (isLayoutRtl() && mMirrorForRtl) {
int tempLeft = left;
left = w - right;
right = w - tempLeft;
}
mIndeterminateDrawable.setBounds(left, top, right, bottom);
}
if (mProgressDrawable != null) {
mProgressDrawable.setBounds(0, 0, right, bottom);
}
}
@Override
protected synchronized void onDraw(Canvas canvas) {
super.onDraw(canvas);
Drawable d = mCurrentDrawable;
if (d != null) {
// Translate canvas so a indeterminate circular progress bar with padding
// rotates properly in its animation
canvas.save();
if(isLayoutRtl() && mMirrorForRtl) {
canvas.translate(getWidth() - mPaddingRight, mPaddingTop);
canvas.scale(-1.0f, 1.0f);
} else {
canvas.translate(mPaddingLeft, mPaddingTop);
}
long time = getDrawingTime();
if (mHasAnimation) {
mAnimation.getTransformation(time, mTransformation);
float scale = mTransformation.getAlpha();
try {
mInDrawing = true;
d.setLevel((int) (scale * MAX_LEVEL));
} finally {
mInDrawing = false;
}
postInvalidateOnAnimation();
}
d.draw(canvas);
canvas.restore();
if (mShouldStartAnimationDrawable && d instanceof Animatable) {
((Animatable) d).start();
mShouldStartAnimationDrawable = false;
}
}
}
@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
Drawable d = mCurrentDrawable;
int dw = 0;
int dh = 0;
if (d != null) {
dw = Math.max(mMinWidth, Math.min(mMaxWidth, d.getIntrinsicWidth()));
dh = Math.max(mMinHeight, Math.min(mMaxHeight, d.getIntrinsicHeight()));
}
updateDrawableState();
dw += mPaddingLeft + mPaddingRight;
dh += mPaddingTop + mPaddingBottom;
setMeasuredDimension(resolveSizeAndState(dw, widthMeasureSpec, 0),
resolveSizeAndState(dh, heightMeasureSpec, 0));
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
updateDrawableState();
}
private void updateDrawableState() {
int[] state = getDrawableState();
if (mProgressDrawable != null && mProgressDrawable.isStateful()) {
mProgressDrawable.setState(state);
}
if (mIndeterminateDrawable != null && mIndeterminateDrawable.isStateful()) {
mIndeterminateDrawable.setState(state);
}
}
static class SavedState extends BaseSavedState {
int progress;
int secondaryProgress;
/**
* Constructor called from {@link ProgressBar#onSaveInstanceState()}
*/
SavedState(Parcelable superState) {
super(superState);
}
/**
* Constructor called from {@link #CREATOR}
*/
private SavedState(Parcel in) {
super(in);
progress = in.readInt();
secondaryProgress = in.readInt();
}
@Override
public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeInt(progress);
out.writeInt(secondaryProgress);
}
public static final Parcelable.Creator CREATOR
= new Parcelable.Creator() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
@Override
public Parcelable onSaveInstanceState() {
// Force our ancestor class to save its state
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.progress = mProgress;
ss.secondaryProgress = mSecondaryProgress;
return ss;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
setProgress(ss.progress);
setSecondaryProgress(ss.secondaryProgress);
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
if (mIndeterminate) {
startAnimation();
}
if (mRefreshData != null) {
synchronized (this) {
final int count = mRefreshData.size();
for (int i = 0; i < count; i++) {
final RefreshData rd = mRefreshData.get(i);
doRefreshProgress(rd.id, rd.progress, rd.fromUser, true);
rd.recycle();
}
mRefreshData.clear();
}
}
mAttached = true;
}
@Override
protected void onDetachedFromWindow() {
if (mIndeterminate) {
stopAnimation();
}
if (mRefreshProgressRunnable != null) {
removeCallbacks(mRefreshProgressRunnable);
}
if (mRefreshProgressRunnable != null && mRefreshIsPosted) {
removeCallbacks(mRefreshProgressRunnable);
}
if (mAccessibilityEventSender != null) {
removeCallbacks(mAccessibilityEventSender);
}
// This should come after stopAnimation(), otherwise an invalidate message remains in the
// queue, which can prevent the entire view hierarchy from being GC'ed during a rotation
super.onDetachedFromWindow();
mAttached = false;
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
event.setClassName(ProgressBar.class.getName());
event.setItemCount(mMax);
event.setCurrentItemIndex(mProgress);
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setClassName(ProgressBar.class.getName());
}
/**
* Schedule a command for sending an accessibility event.
*
* Note: A command is used to ensure that accessibility events
* are sent at most one in a given time frame to save
* system resources while the progress changes quickly.
*/
private void scheduleAccessibilityEventSender() {
if (mAccessibilityEventSender == null) {
mAccessibilityEventSender = new AccessibilityEventSender();
} else {
removeCallbacks(mAccessibilityEventSender);
}
postDelayed(mAccessibilityEventSender, TIMEOUT_SEND_ACCESSIBILITY_EVENT);
}
/**
* Command for sending an accessibility event.
*/
private class AccessibilityEventSender implements Runnable {
public void run() {
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED);
}
}
}