/**
 * Equivalent to calling {@link ImageView#setImageResource(int)}
 *
 * @param viewId The id of the view whose drawable should change
 * @param srcId The new resource id for the drawable
 */
publicvoidsetImageViewResource(@IdResint viewId, @DrawableResint srcId){
    setInt(viewId, "setImageResource", srcId);
}
  
/**
 * Equivalent to calling {@link ImageView#setImageURI(Uri)}
 *
 * @param viewId The id of the view whose drawable should change
 * @param uri The Uri for the image
 */
publicvoidsetImageViewUri(@IdResint viewId, Uri uri){
    setUri(viewId, "setImageURI", uri);
}
  
/**
 * Equivalent to calling {@link ImageView#setImageBitmap(Bitmap)}
 *
 * @param viewId The id of the view whose bitmap should change
 * @param bitmap The new Bitmap for the drawable
 */
publicvoidsetImageViewBitmap(@IdResint viewId, Bitmap bitmap){
    setBitmap(viewId, "setImageBitmap", bitmap);
}
  
/**
 * Equivalent to calling {@link ImageView#setImageIcon(Icon)}
 *
 * @param viewId The id of the view whose bitmap should change
 * @param icon The new Icon for the ImageView
 */
publicvoidsetImageViewIcon(@IdResint viewId, Icon icon){
    setIcon(viewId, "setImageIcon", icon);
}

<ViewFlipper
    android:layout_width="40dp"
    android:layout_height="40dp"
    android:layout_gravity="end|center_vertical"
    android:autoStart="true"
    android:flipInterval="90">
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim0" />
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim15" />
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim28" />
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim43" />
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim57" />
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim71" />
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim85" />
  
    <ImageView
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:src="@drawable/before_sign_in_anim100" />
</ViewFlipper>

<?xml versinotallow="1.0" encoding="utf-8"?>
<animated-image xmlns:android="http://schemas.android.com/apk/res/android"
    android:autoStart="true"
    android:autoMirrored="true"
    android:src="@drawable/ic_test_gif" />

<!-- Drawable used to draw animated images(gif). -->
    <declare-styleable name="AnimatedImageDrawable">
        <!-- Identifier of the image file. This attribute is mandatory.
             It must be an image file with multiple frames, e.g. gif or webp -->
        <attr name="src" />
        <!-- Indicates if the drawable needs to be mirrored when its layout direction is
             RTL(right-to-left). -->
        <attr name="autoMirrored" />
        <!-- Replace the loop count in the encoded data. A repeat count of 0 means that
             the animation will play once, regardless of the number of times specified
             in the encoded data. Setting this to infinite(-1) will result in the
             animation repeating as long as it is displayed(once start() is called). -->
        <attr name="repeatCount"/>
        <!-- When true, automatically start animating. The default is false, meaning
             that the animation will not start until start() is called. -->
        <attr name="autoStart" />
    </declare-styleable>

remoteViews.setImageViewResource(
    R.id.abnormal_static_cat,
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
        R.drawable.before_sign_in_anim
    } else {
        R.drawable.before_sign_in_static
    }
)

val appwidgetTarget = AppWidgetTarget(context, R.id.abnormal_static_cat, remoteViews, ComponentName(context, TestWidgetProvider::class.java))
Glide.with(context)
   .asBitmap()
   .load(url)
   .into(appwidgetTarget)

Glide.with(context)
    .asGif()
    .load(url)
    .diskCacheStrategy(DiskCacheStrategy.ALL)
    .submit(432, 432)
    .get()

@WorkerThread
fun getAllFrameBitmapByUrl(context: Context, url: String): MutableList<Bitmap> {
    val frameBitmaps: MutableList<Bitmap> = ArrayList()
    var gifDrawable: GifDrawable? = null
    try {
        val gif = Glide.with(context)
            .asGif()
            .load(url)
            .diskCacheStrategy(DiskCacheStrategy.ALL)
            .submit(432, 432)
            .get()
        gifDrawable = GifDrawable(gif.buffer)
        val totalCount = gifDrawable.numberOfFrames
        for(i in 0 until totalCount){
            frameBitmaps.add(gifDrawable.seekToFrameAndGet(i))
        }
    } catch (t: Throwable) {
        VLog.e(TAG, "getAllFrameBitmapByUrl Error.", t)
    } finally {
        gifDrawable?.stop()
    }
    return frameBitmaps
}

privatevoidcomputeMaximumWidgetBitmapMemory(){
    Display display = mContext.getDisplayNoVerify();
    Point size = new Point();
    display.getRealSize(size);
    // Cap memory usage at 1.5 times the size of the display
    // 1.5 * 4 bytes/pixel * w * h ==> 6 * w * h
    mMaxWidgetBitmapMemory = 6 * size.x * size.y;
}

/**
     * Call a method taking one Bitmap on a view in the layout for this RemoteViews.
     * @more
     * <p class="note">The bitmap will be flattened into the parcel if this object is
     * sent across processes, so it may end up using a lot of memory, and may be fairly slow.</p>
     *
     * @param viewId The id of the view on which to call the method.
     * @param methodName The name of the method to call.
     * @param value The value to pass to the method.
     */
    publicvoidsetBitmap(@IdResint viewId, String methodName, Bitmap value){
        addAction(new BitmapReflectionAction(viewId, methodName, value));
    }
  
...
  
    BitmapReflectionAction(@IdResint viewId, String methodName, Bitmap bitmap) {
       this.bitmap = bitmap;
       this.viewId = viewId;
       this.methodName = methodName;
       bitmapId = mBitmapCache.getBitmapId(bitmap);
    }
  
...
  
    publicintgetBitmapId(Bitmap b){
        if (b == null) {
            return -1;
        } else {
            int hash = b.hashCode();
            int hashId = mBitmapHashes.get(hash, -1);
            if (hashId != -1) {
                return hashId;
            } else {
                if (b.isMutable()) {
                    b = b.asShared();
                }
                mBitmaps.add(b);
                mBitmapHashes.put(mBitmaps.size() - 1, hash);
                mBitmapMemory = -1;
                return (mBitmaps.size() - 1);
           }
       }
   }

val viewFlipper = RemoteViews(context.packageName, R.layout.sign_in_view_flipper)
var allSize = 0
kotlin.run {
    frameBitmaps.forEachIndexed { index, it ->
        logger.d("allSize = $allSize, index = $index")
        if (index % 5 != 0) {
            return@forEachIndexed
        }
        val ivRemoteViews = RemoteViews(context.packageName, R.layout.sign_in_per_frame_bitmap_view)
        var bitmapSize = GifDownloadUtils.getBitmapSize(it)
        var bitmap = it
        val matrix = Matrix()
        var scale = 432f / bitmap.width
        logger.d("start, bitmapSize = $bitmapSize")
        matrix.setScale(scale, scale)
        while (bitmapSize >= GifDownloadUtils.MAX_WIDGET_BITMAP_MEMORY) {
            bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
            bitmapSize = GifDownloadUtils.getBitmapSize(bitmap)
            logger.d("bitmapSize = $bitmapSize, scale = $scale")
            scale /= 2f
            matrix.setScale(scale, scale)
        }
        allSize += bitmapSize
        logger.d("allSize = $allSize")
        if (allSize >= GifDownloadUtils.maxTotalWidgetBitmapMemory()) {
            return@run
        }
        ivRemoteViews.setImageViewBitmap(R.id.iv_per_frame, bitmap)
        viewFlipper.addView(R.id.view_flipper, ivRemoteViews)
    }
}
  
logger.d("addView")
// 這里是由于addView添加的View都會顯示在最上面，所以這里通過在原卡片中添加相同id的view，先把原卡的移除，再把新建的添加進去，達到更新的效果，這樣布局的層級就還是原先的層級。
remoteViews.removeAllViews(R.id.view_flipper)
remoteViews.addView(R.id.view_flipper, viewFlipper)