[移动开发]Android 播放帧动画2

package com.test.util;

import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.NonNull;
import android.util.Log;
import android.view.View;

import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

public class AnimUtilX {

    private final static String TAG = "AnimUtilX";

    private int[] resIdArr;
    private int index;
    private View view;
    private int period;//动画间隔
    private boolean isRepeatFlag = false;
    private boolean isStartFlag = false;

    private int tokenIndex = 0;

    private static AtomicInteger sThreadNum = new AtomicInteger(0);
    private static ThreadPoolExecutor sExecutor;

    static {
        ThreadFactory threadGroup = new ThreadFactory(){
            @Override
            public Thread newThread(@NonNull Runnable r) {
                Thread thread = new Thread(r, "anim-thread-" + sThreadNum.getAndIncrement());
                return thread;
            }
        };
        sExecutor = new ThreadPoolExecutor(2,2, 60, TimeUnit.SECONDS,
                new LinkedBlockingQueue<Runnable>(), threadGroup);
        sExecutor.allowCoreThreadTimeOut(true);
    }

    public interface OnAnimEndListener {
        public void onAnimEnd();
    }

    private AnimUtilX.OnAnimEndListener listener;

    //播放完成监听
    public void setOnAnimEndListener(AnimUtilX.OnAnimEndListener listener) {
        this.listener = listener;
    }

    private final static int PLAYING_ANIM_MSG = 0;
    private final static int GET_BITMAP_MSG = 1;
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            // TODO Auto-generated method stub
            super.handleMessage(msg);
            switch (msg.what) {
                case PLAYING_ANIM_MSG: {
                    if (!(msg.obj instanceof TokenDelay)){
                        return;
                    }
                    TokenDelay tokenDelay = (TokenDelay) msg.obj;
                    if (tokenDelay.token != tokenIndex){
                        Log.e(TAG, "PLAYING_ANIM_MSG, msg.tokenIndex = " + tokenDelay.token
                                + ", tokenIndex = " + tokenIndex + ", ignore !!! " + view);
                        return;
                    }
                    if (resIdArr.length <= index || !isStartFlag){
                        Log.e(TAG, "index = " + index + ", resIdArr.length = " + resIdArr.length
                            + ", isStartFlag = " + isStartFlag + ", invalid ignore !!!");
                        return;
                    }

                    Task task = new Task.Builder()
                            .setResource(view.getResources())
                            .setResId(resIdArr[index])
                            .setHandler(handler)
                            .setMsgWhat(GET_BITMAP_MSG)
                            .setDelay(tokenDelay.delay)
                            .setTokenIndex(tokenDelay.token)
                            .create();

                    sExecutor.execute(task);

                    break;
                }
                case GET_BITMAP_MSG: {
                    if (isActivityFinish()){
                        Log.e(TAG, " Activity is Finish , ignore !!!! " + view);
                        return;
                    }
                    if (!isStartFlag) {
                        Log.e(TAG, "anim is stop *** " + view);
                        return;
                    }

                    if(msg.arg1 != tokenIndex){
                        Log.e(TAG, "msg tokenIndex " + tokenIndex
                                + ", tokenIndex = " + tokenIndex + ", ignore !!! " + view);
                        return;
                    }

                    Bitmap bitmap = (Bitmap) msg.obj;
                    BitmapDrawable bd = new BitmapDrawable(view.getResources(), bitmap);
                    view.setBackground(bd);
                    index++;
                    if (index >= resIdArr.length) {
                        if (isRepeatFlag) {
                            index = 0;
                        } else {
                            if (listener != null) {
                                listener.onAnimEnd();
                            }
                            return;
                        }
                    }
                    sendPlayAnimMsg(period);
                    break;
                }
            }
        }

    };

    public AnimUtilX() {
        index = 0;//第几章图片
    }

    /**
     * @param view         控件
     * @param resIdArr     图片素材
     * @param isRepeatFlag 是否循环播放
     */
    public void setAnimInfo(View view, int[] resIdArr, boolean isRepeatFlag) {
        this.view = view;
        this.resIdArr = resIdArr;
        this.isRepeatFlag = isRepeatFlag;
    }

    public void startAnim(int period){
        startAnim(0, period);
    }

    /**
     *
     * @param delayMillis 延时
     * @param period 一帧持续时间
     */
    public void startAnim(long delayMillis, int period) {
        if (delayMillis < 0){
            delayMillis = 0;
        }
        this.period = period;
        index = 0;
        handler.removeMessages(PLAYING_ANIM_MSG);
        sendPlayAnimMsg((int)delayMillis);
        isStartFlag = true;
    }

    /**
     * 是否正在播放
     *
     * @return
     */
    public boolean isAniming() {
        return isStartFlag;
    }

    //是否循环
    public boolean isRepeat() {
        return isRepeatFlag;
    }

    public void stopAnim() {
        isStartFlag = false;
        tokenIndex++;

        if (handler.hasMessages(PLAYING_ANIM_MSG)) {
            Log.i(TAG, "stopAnim() stopAnim hasMessages(PLAYING_ANIM_MSG) " + view);
        }
        handler.removeMessages(PLAYING_ANIM_MSG);
        //view.setBackgroundResource(resIdArr[0]);
    }

    //应用退出
    public static void quit() {
        sExecutor.shutdownNow();
    }

    private boolean isActivityFinish(){
        Context context = view.getContext();
        if (context instanceof Activity){
            Activity activity = (Activity) context;
            if (activity.isFinishing() || activity.isDestroyed()){
                return true;
            }
        }
        return false;
    }

    static class TokenDelay{
        final int token;
        final int delay;

        public TokenDelay(int token, int delay){
            this.token = token;
            this.delay = delay;
        }
    }

    private void sendPlayAnimMsg(int delay){
        Message sendMsg = Message.obtain(handler, PLAYING_ANIM_MSG, 0, 0);
        sendMsg.obj = new TokenDelay(tokenIndex, delay);
        handler.sendMessage(sendMsg);
    }

    static class Task implements Runnable {
        final Resources resource;
        final int resId;
        final Handler handler;
        final int msgWhat;
        final int delay;
        final long startTime;
        final int tokenIndex;

        public Task(Builder builder){
            resource = builder.resource;
            resId = builder.resId;
            handler = builder.handler;
            msgWhat = builder.msgWhat;
            delay = builder.delay;
            startTime = builder.startTime;
            tokenIndex = builder.tokenIndex;
        }

        @Override
        public void run() {
            long time = System.currentTimeMillis();
            Bitmap bitmap = BitmapFactory.decodeResource(resource, resId);
            Log.i(TAG, "" + Thread.currentThread() + ", BitmapFactory.decodeResource use time "
             + (System.currentTimeMillis() - time));
            long useTime = System.currentTimeMillis() - startTime;
            long msgDelay = delay - useTime;
            if (msgDelay < 0){
                msgDelay = 0;
            }
            Message msg = Message.obtain();
            msg.what = msgWhat;
            msg.arg1 = tokenIndex;
            msg.obj = bitmap;
            handler.sendMessageDelayed(msg, msgDelay);
        }

        public static class Builder{
            private Resources resource;
            private int resId;
            private Handler handler;
            private int msgWhat;
            private int delay;
            private long startTime;
            private int tokenIndex;

            public Builder(){
            }

            public Builder setResource(Resources resource){
                this.resource = resource;
                return this;
            }

            public Builder setResId(int resId){
                this.resId = resId;
                return this;
            }

            public Builder setHandler(Handler handler){
                this.handler = handler;
                return this;
            }

            public Builder setMsgWhat(int msgWhat){
                this.msgWhat = msgWhat;
                return this;
            }

            public Builder setDelay(int delay){
                this.delay = delay;
                return this;
            }

            public Builder setTokenIndex(int index){
                this.tokenIndex = index;
                return this;
            }

            public Task create(){
                startTime = System.currentTimeMillis();
                return new Task(this);
            }

        }
    }
}