Android example source code file (ProgressBar.java)
The ProgressBar.java Android example source code/*
* Copyright (C) 2006 The Android Open Source Project
*
* 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 android.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Shader;
import android.graphics.Rect;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ClipDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.StateListDrawable;
import android.graphics.drawable.Animatable;
import android.graphics.drawable.shapes.RoundRectShape;
import android.graphics.drawable.shapes.Shape;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewDebug;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.view.animation.Transformation;
import android.widget.RemoteViews.RemoteView;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;
import com.android.internal.R;
/**
* <p>
* Visual indicator of progress in some operation. Displays a bar to the user
* representing how far the operation has progressed; the application can
* change the amount of progress (modifying the length of the bar) as it moves
* forward. There is also a secondary progress displayable on a progress bar
* which is useful for displaying intermediate progress, such as the buffer
* level during a streaming playback progress bar.
* </p>
*
* <p>
* A progress bar can also be made indeterminate. In indeterminate mode, the
* progress bar shows a cyclic animation. This mode is used by applications
* when the length of the task is unknown.
* </p>
*
* <p>The following code example shows how a progress bar can be used from
* a worker thread to update the user interface to notify the user of progress:
* </p>
*
* <pre class="prettyprint">
* public class MyActivity extends Activity {
* private static final int PROGRESS = 0x1;
*
* private ProgressBar mProgress;
* private int mProgressStatus = 0;
*
* private Handler mHandler = new Handler();
*
* protected void onCreate(Bundle icicle) {
* super.onCreate(icicle);
*
* setContentView(R.layout.progressbar_activity);
*
* mProgress = (ProgressBar) findViewById(R.id.progress_bar);
*
* // Start lengthy operation in a background thread
* new Thread(new Runnable() {
* public void run() {
* while (mProgressStatus < 100) {
* mProgressStatus = doWork();
*
* // Update the progress bar
* mHandler.post(new Runnable() {
* public void run() {
* mProgress.setProgress(mProgressStatus);
* }
* });
* }
* }
* }).start();
* }
* }
* </pre>
*
* <p>XML attributes
* <p>
* See {@link android.R.styleable#ProgressBar ProgressBar Attributes},
* {@link android.R.styleable#View View Attributes}
* </p>
*
* <p>Styles
* <p>
* @attr ref android.R.styleable#Theme_progressBarStyle
* @attr ref android.R.styleable#Theme_progressBarStyleSmall
* @attr ref android.R.styleable#Theme_progressBarStyleLarge
* @attr ref android.R.styleable#Theme_progressBarStyleHorizontal
* </p>
*/
@RemoteView
public class ProgressBar extends View {
private static final int MAX_LEVEL = 10000;
private static final int ANIMATION_RESOLUTION = 200;
int mMinWidth;
int mMaxWidth;
int mMinHeight;
int mMaxHeight;
private int mProgress;
private int mSecondaryProgress;
private int mMax;
private int mBehavior;
private int mDuration;
private boolean mIndeterminate;
private boolean mOnlyIndeterminate;
private Transformation mTransformation;
private AlphaAnimation mAnimation;
private Drawable mIndeterminateDrawable;
private Drawable mProgressDrawable;
private Drawable mCurrentDrawable;
Bitmap mSampleTile;
private boolean mNoInvalidate;
private Interpolator mInterpolator;
private RefreshProgressRunnable mRefreshProgressRunnable;
private long mUiThreadId;
private boolean mShouldStartAnimationDrawable;
private long mLastDrawTime;
private boolean mInDrawing;
/**
* 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 defStyle) {
super(context, attrs, defStyle);
mUiThreadId = Thread.currentThread().getId();
initProgressBar();
TypedArray a =
context.obtainStyledAttributes(attrs, R.styleable.ProgressBar, defStyle, 0);
mNoInvalidate = true;
Drawable drawable = a.getDrawable(R.styleable.ProgressBar_progressDrawable);
if (drawable != null) {
drawable = tileify(drawable, false);
// Calling this method can set mMaxHeight, make sure the corresponding
// XML attribute for mMaxHeight is read after calling this method
setProgressDrawable(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) {
drawable = tileifyIndeterminate(drawable);
setIndeterminateDrawable(drawable);
}
mOnlyIndeterminate = a.getBoolean(
R.styleable.ProgressBar_indeterminateOnly, mOnlyIndeterminate);
mNoInvalidate = false;
setIndeterminate(mOnlyIndeterminate || a.getBoolean(
R.styleable.ProgressBar_indeterminate, mIndeterminate));
a.recycle();
}
/**
* 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 Bitmap tileBitmap = ((BitmapDrawable) drawable).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);
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;
}
/**
* <p>
* Initialize the progress bar's default values:
* </p>
* <ul>
* <li>progress = 0
* <li>max = 100
* <li>animation duration = 4000 ms
* <li>indeterminate = false
* <li>behavior = repeat
* </ul>
*/
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;
}
/**
* <p>Indicate whether this progress bar is in indeterminate mode.
*
* @return true if the progress bar is in indeterminate mode
*/
@ViewDebug.ExportedProperty
public synchronized boolean isIndeterminate() {
return mIndeterminate;
}
/**
* <p>Change the indeterminate mode for this progress bar. In indeterminate
* mode, the progress is ignored and the progress bar shows an infinite
* animation instead.</p>
*
* 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();
}
}
}
/**
* <p>Get the drawable used to draw the progress bar in
* indeterminate mode.</p>
*
* @return a {@link android.graphics.drawable.Drawable} instance
*
* @see #setIndeterminateDrawable(android.graphics.drawable.Drawable)
* @see #setIndeterminate(boolean)
*/
public Drawable getIndeterminateDrawable() {
return mIndeterminateDrawable;
}
/**
* <p>Define the drawable used to draw the progress bar in
* indeterminate mode.</p>
*
* @param d the new drawable
*
* @see #getIndeterminateDrawable()
* @see #setIndeterminate(boolean)
*/
public void setIndeterminateDrawable(Drawable d) {
if (d != null) {
d.setCallback(this);
}
mIndeterminateDrawable = d;
if (mIndeterminate) {
mCurrentDrawable = d;
postInvalidate();
}
}
/**
* <p>Get the drawable used to draw the progress bar in
* progress mode.</p>
*
* @return a {@link android.graphics.drawable.Drawable} instance
*
* @see #setProgressDrawable(android.graphics.drawable.Drawable)
* @see #setIndeterminate(boolean)
*/
public Drawable getProgressDrawable() {
return mProgressDrawable;
}
/**
* <p>Define the drawable used to draw the progress bar in
* progress mode.</p>
*
* @param d the new drawable
*
* @see #getProgressDrawable()
* @see #setIndeterminate(boolean)
*/
public void setProgressDrawable(Drawable d) {
if (d != null) {
d.setCallback(this);
// 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();
}
}
/**
* @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 postInvalidate() {
if (!mNoInvalidate) {
super.postInvalidate();
}
}
private class RefreshProgressRunnable implements Runnable {
private int mId;
private int mProgress;
private boolean mFromUser;
RefreshProgressRunnable(int id, int progress, boolean fromUser) {
mId = id;
mProgress = progress;
mFromUser = fromUser;
}
public void run() {
doRefreshProgress(mId, mProgress, mFromUser);
// Put ourselves back in the cache when we are done
mRefreshProgressRunnable = this;
}
public void setup(int id, int progress, boolean fromUser) {
mId = id;
mProgress = progress;
mFromUser = fromUser;
}
}
private synchronized void doRefreshProgress(int id, int progress, boolean fromUser) {
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);
}
final int level = (int) (scale * MAX_LEVEL);
(progressDrawable != null ? progressDrawable : d).setLevel(level);
} else {
invalidate();
}
if (id == R.id.progress) {
onProgressRefresh(scale, fromUser);
}
}
void onProgressRefresh(float scale, boolean fromUser) {
}
private synchronized void refreshProgress(int id, int progress, boolean fromUser) {
if (mUiThreadId == Thread.currentThread().getId()) {
doRefreshProgress(id, progress, fromUser);
} else {
RefreshProgressRunnable r;
if (mRefreshProgressRunnable != null) {
// Use cached RefreshProgressRunnable if available
r = mRefreshProgressRunnable;
// Uncache it
mRefreshProgressRunnable = null;
r.setup(id, progress, fromUser);
} else {
// Make a new one
r = new RefreshProgressRunnable(id, progress, fromUser);
}
post(r);
}
}
/**
* <p>Set the current progress to the specified value. Does not do anything
* if the progress bar is in indeterminate mode.</p>
*
* @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);
}
}
/**
* <p>
* Set the current secondary progress to the specified value. Does not do
* anything if the progress bar is in indeterminate mode.
* </p>
*
* @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);
}
}
/**
* <p>Get the progress bar's current level of progress. Return 0 when the
* progress bar is in indeterminate mode.</p>
*
* @return the current progress, between 0 and {@link #getMax()}
*
* @see #setIndeterminate(boolean)
* @see #isIndeterminate()
* @see #setProgress(int)
* @see #setMax(int)
* @see #getMax()
*/
@ViewDebug.ExportedProperty
public synchronized int getProgress() {
return mIndeterminate ? 0 : mProgress;
}
/**
* <p>Get the progress bar's current level of secondary progress. Return 0 when the
* progress bar is in indeterminate mode.</p>
*
* @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
public synchronized int getSecondaryProgress() {
return mIndeterminate ? 0 : mSecondaryProgress;
}
/**
* <p>Return the upper limit of this progress bar's range.
*
* @return a positive integer
*
* @see #setMax(int)
* @see #getProgress()
* @see #getSecondaryProgress()
*/
@ViewDebug.ExportedProperty
public synchronized int getMax() {
return mMax;
}
/**
* <p>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);
}
}
}
/**
* <p>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);
}
/**
* <p>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);
}
/**
* <p>Start the indeterminate progress animation.
*/
void startAnimation() {
if (getVisibility() != VISIBLE) {
return;
}
if (mIndeterminateDrawable instanceof Animatable) {
mShouldStartAnimationDrawable = true;
mAnimation = null;
} else {
if (mInterpolator == null) {
mInterpolator = new LinearInterpolator();
}
mTransformation = new Transformation();
mAnimation = new AlphaAnimation(0.0f, 1.0f);
mAnimation.setRepeatMode(mBehavior);
mAnimation.setRepeatCount(Animation.INFINITE);
mAnimation.setDuration(mDuration);
mAnimation.setInterpolator(mInterpolator);
mAnimation.setStartTime(Animation.START_ON_FIRST_FRAME);
postInvalidate();
}
}
/**
* <p>Stop the indeterminate progress animation.
*/
void stopAnimation() {
mAnimation = null;
mTransformation = null;
if (mIndeterminateDrawable instanceof Animatable) {
((Animatable) mIndeterminateDrawable).stop();
mShouldStartAnimationDrawable = false;
}
}
/**
* 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
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) {
// onDraw will translate the canvas so we draw starting at 0,0
int right = w - mPaddingRight - mPaddingLeft;
int bottom = h - mPaddingBottom - mPaddingTop;
if (mIndeterminateDrawable != null) {
mIndeterminateDrawable.setBounds(0, 0, 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();
canvas.translate(mPaddingLeft, mPaddingTop);
long time = getDrawingTime();
if (mAnimation != null) {
mAnimation.getTransformation(time, mTransformation);
float scale = mTransformation.getAlpha();
try {
mInDrawing = true;
d.setLevel((int) (scale * MAX_LEVEL));
} finally {
mInDrawing = false;
}
if (SystemClock.uptimeMillis() - mLastDrawTime >= ANIMATION_RESOLUTION) {
mLastDrawTime = SystemClock.uptimeMillis();
postInvalidateDelayed(ANIMATION_RESOLUTION);
}
}
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()));
}
dw += mPaddingLeft + mPaddingRight;
dh += mPaddingTop + mPaddingBottom;
setMeasuredDimension(resolveSize(dw, widthMeasureSpec),
resolveSize(dh, heightMeasureSpec));
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
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<SavedState> CREATOR
= new Parcelable.Creator<SavedState>() {
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();
}
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
if (mIndeterminate) {
stopAnimation();
}
}
}
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