Android(安卓)解决帧动画卡顿问题
16lz
2022-03-09
Android帧动画一次性加载会造成ui卡顿，所以就有了这份代码。通过handle队列和Bitmap复用，每次加载一张并显示，可以解决帧动画卡顿问题。
使用方法：
int[] right_res_id = new int[]{R.drawable.r_00072, R.drawable.r_00073, R.drawable.r_00074, R.drawable.r_00075};final AnimationsContainer.FramesSequenceAnimation rightAnim = AnimationsContainer.getInstance().createProgressDialogAnim(imgRight,right_res_id);rightAnim.setOnAnimStopListener(new AnimationsContainer.OnAnimationListener() { @Override public void onAnimationStart(AnimationsContainer.FramesSequenceAnimation animation) { //TODO } @Override public void onAnimationEnd(AnimationsContainer.FramesSequenceAnimation animation) { //TODO } @Override public void onAnimationStopOrCancel(AnimationsContainer.FramesSequenceAnimation animation) { //TODO } });//rightAnim.setLoop(true);//rightAnim.setGoBack(true); //只有动画停止时才会调用//rightAnim.setDelayMillis(58); //设置每帧播放时间，与setDuration(long)二选一rightAnim.setDuration(3000); //设置播放总时间rightAnim.start();//rightAnim.stop();//rightAnim.goBackStart(); //返回第一帧//rightAnim.cancel();代码AnimationsContainer.java
import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.drawable.BitmapDrawable;import android.os.Build;import android.os.Handler;import android.widget.ImageView;import java.lang.ref.SoftReference;/** * 帧动画加载工具类 */public class AnimationsContainer { private static final AnimationsContainer mInstance = new AnimationsContainer(); private AnimationsContainer() { } /** * 获取单例 */ public static AnimationsContainer getInstance() { return mInstance; } /** * 创建一个 Imageview 的播放动画类 * * @param imageView 要播放动画的ImageView * @param resId 资源id数组 * @return progress dialog animation */ public FramesSequenceAnimation createProgressDialogAnim(ImageView imageView, int[] resId) { return new FramesSequenceAnimation(imageView, resId); } /** * 循环读取帧---循环播放帧 */ public class FramesSequenceAnimation { private int[] mFrames; // 帧数组 private int mIndex; // 当前帧 private boolean mShouldRun; // 开始/停止播放用 private boolean mIsRunning; // 动画是否正在播放，防止重复播放 private SoftReference mSoftReferenceImageView; // 软引用ImageView，以便及时释放掉 private Handler mHandler; private long mDelayMillis = 58; private boolean isLoop = false; private boolean isGoBack = true; private OnAnimationListener mOnAnimationListener; //播放停止监听 private Bitmap mBitmap = null; private BitmapFactory.Options mBitmapOptions;//Bitmap管理类，可有效减少Bitmap的OOM问题 public FramesSequenceAnimation(ImageView imageView, int[] frames) { mHandler = new Handler(); mFrames = frames; mIndex = -1; mSoftReferenceImageView = new SoftReference(imageView); mShouldRun = false; mIsRunning = false; imageView.setImageResource(mFrames[0]); // 当图片大小类型相同时进行复用，避免频繁GC if (Build.VERSION.SDK_INT >= 11) { Bitmap bmp = ((BitmapDrawable) imageView.getDrawable()).getBitmap(); int width = bmp.getWidth(); int height = bmp.getHeight(); Bitmap.Config config = bmp.getConfig(); mBitmap = Bitmap.createBitmap(width, height, config); mBitmapOptions = new BitmapFactory.Options(); //设置Bitmap内存复用 mBitmapOptions.inBitmap = mBitmap;//Bitmap复用内存块，类似对象池，避免不必要的内存分配和回收 mBitmapOptions.inMutable = true;//解码时返回可变Bitmap mBitmapOptions.inSampleSize = 1;//缩放比例 } } /** * 循环读取下一帧 */ private int getNext() { mIndex++; if (mIndex < mFrames.length) { return mFrames[mIndex]; } else if (mIndex >= mFrames.length && isLoop) { return mFrames[mIndex = 0]; } else if (isGoBack) { end(); return mFrames[mIndex = 0]; } else { end(); return mIndex = -1; } } /** * How long this animation should last. The duration cannot be negative. * 与setDelayMillis(long)方法二选一 * * @param duration Duration in milliseconds * @throws java.lang.IllegalArgumentException if the duration is < 0 * @attr ref android.R.styleable#Animation_duration * @see #setDelayMillis(long) */ public FramesSequenceAnimation setDuration(long duration) { if (mFrames.length == 0) { throw new IllegalArgumentException("Animation frame length == 0"); } if (duration < 0) { throw new IllegalArgumentException("Animators cannot have negative duration: " + duration); } mDelayMillis = duration / mFrames.length; return this; } /** * 直接设置每帧间隔时间，与 setDuration(long) 方法二选一 * * @param delayMillis 每帧间隔时间，数值推荐：58，单位:毫秒 * @throws java.lang.IllegalArgumentException if the duration is < 0 * @attr ref android.R.styleable#Animation_duration * @see #setDuration(long) */ public FramesSequenceAnimation setDelayMillis(long delayMillis) { if (delayMillis < 0) { throw new IllegalArgumentException("Animators cannot have negative duration: " + delayMillis); } mDelayMillis = delayMillis; return this; } /** * 是否循环播放 * * @param isLoop */ public synchronized FramesSequenceAnimation setLoop(boolean isLoop) { this.isLoop = isLoop; return this; } /** * 是否返回第一帧 * * @param isGoBack */ public synchronized FramesSequenceAnimation setGoBack(boolean isGoBack) { this.isGoBack = isGoBack; return this; } /** * 播放动画，同步锁防止多线程读帧时，数据安全问题 */ public synchronized void start() { mShouldRun = true; if (mIsRunning) return; Runnable runnable = new Runnable() { @Override public void run() { ImageView imageView = mSoftReferenceImageView.get(); if (!mShouldRun || imageView == null) { mIsRunning = false; return; } mIsRunning = true; //新开任务到队尾去读下一帧 mHandler.postDelayed(this, mDelayMillis); if (imageView.isShown()) { int imageRes = getNext(); if (imageRes == -1) { return; } if (mBitmap != null) { // so Build.VERSION.SDK_INT >= 11 Bitmap bitmap = null; try { bitmap = BitmapFactory.decodeResource(imageView.getResources(), imageRes, mBitmapOptions); } catch (Exception e) { e.printStackTrace(); } if (bitmap != null) { imageView.setImageBitmap(bitmap); } else { imageView.setImageResource(imageRes); mBitmap.recycle(); mBitmap = null; } } else { imageView.setImageResource(imageRes); } } } }; mHandler.post(runnable); if (mOnAnimationListener != null) { mOnAnimationListener.onAnimationStart(FramesSequenceAnimation.this); } } /** * 暂停播放，下次start会继续播放 */ public synchronized void stop() { if (!mShouldRun) { return; } mShouldRun = false; if (mOnAnimationListener != null) { mOnAnimationListener.onAnimationStopOrCancel(FramesSequenceAnimation.this); } } /** * 取消播放，下次start会从头播放 */ public synchronized void cancel() { if (!mShouldRun) { return; } mShouldRun = false; mIndex = 0; if (mOnAnimationListener != null) { mOnAnimationListener.onAnimationStopOrCancel(FramesSequenceAnimation.this); } } /** * 播放结束 */ private synchronized void end() { if (!mShouldRun) { return; } mShouldRun = false; if (mOnAnimationListener != null) { mOnAnimationListener.onAnimationEnd(FramesSequenceAnimation.this); } } /** * 直接返回第一帧 */ public synchronized void goBackStart() { if (mFrames.length == 0) { throw new IllegalArgumentException("Animation frame length == 0"); } mIndex = 0; ImageView imageView = mSoftReferenceImageView.get(); imageView.setImageResource(mFrames[mIndex]); } /** * 设置停止播放监听 * * @param listener */ public FramesSequenceAnimation setOnAnimStopListener(OnAnimationListener listener) { this.mOnAnimationListener = listener; return this; } } /** * 停止播放监听 */ public interface OnAnimationListener { void onAnimationStart(FramesSequenceAnimation animation); void onAnimationEnd(FramesSequenceAnimation animation); void onAnimationStopOrCancel(FramesSequenceAnimation animation); }} 更多相关文章
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