自定义动画控件 AnimationView

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AnimationView 继承View

public class AnimationView extends View {    Bitmap[] bitmap; //图片的数组    int sleepTime = 1000;    public boolean isRunning = true;    int currentImageIndex = 0;    int viewWidth, viewHeight;    Thread thread;    public AnimationView(Context context, AttributeSet attrs) {        super(context, attrs);        //读取自定义属性  typedArray 封装了子控件的属性        //attrs布局文件中定义的所有属性        TypedArray typedArray=context.obtainStyledAttributes(attrs, R.styleable.AnimationView);        float defValue=1000;        sleepTime=(int) typedArray.getFloat(R.styleable.AnimationView_sleep_time, defValue);        //读取数组        Resources resources=context.getResources();        //获取数组        TypedArray taImage=resources.obtainTypedArray(R.array.animationImages);        int length=taImage.length();        bitmap = new Bitmap[length];        for (int i=0;i<length;i++)        {            //读取图的id            int imageId=taImage.getResourceId(i, 0);            Bitmap image=BitmapFactory.decodeResource(resources, imageId);            bitmap[i]=image;            Log.i("测量", "image:"+image.getWidth()+","+image.getHeight());        }        MyRunnable myRunnable = new MyRunnable();        thread = new Thread(myRunnable);        thread.start();    }    //测量控件大小，设置控件大小    //不测量，控件大小是父容器的大小,别的控件不显示    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        //控件大小是图的大小.        int imageWidth=bitmap[0].getWidth();        int imageHeight=bitmap[0].getHeight();        setMeasuredDimension(imageWidth, imageHeight);    }    @Override    protected void onDraw(Canvas canvas) {        Bitmap drawImage = bitmap[currentImageIndex];        int x = (viewWidth - drawImage.getWidth()) / 2;        int y = (viewHeight - drawImage.getHeight()) / 2;        Paint paint = new Paint();        canvas.drawBitmap(drawImage, x, y, paint);        Log.i("animationView", "onDraw x=" + x);    }    @Override    protected void onSizeChanged(int w, int h, int oldw, int oldh) {        // TODO Auto-generated method stub        super.onSizeChanged(w, h, oldw, oldh);        viewHeight = h;        viewWidth = w;    }    class MyRunnable implements Runnable {        @Override        public void run() {            while (isRunning) {                try {                    currentImageIndex++;                    if (currentImageIndex >= bitmap.length) {                        currentImageIndex = 0;                    }                    // 工作线程中更新界面调postInvalidate();                    // 主线程中更新界面调invalidate();                    postInvalidate();                    // invalidate();                    Log.i("animationView", "currentImageIndex="+ currentImageIndex);                    Thread.currentThread().sleep(sleepTime);                } catch (Exception e) {                    // TODO: handle exception                }            }        }    }}

二资源文件 res—>values—>attrs.xml

 <declare-styleable name="AnimationView">        <attr name="sleep_time" format="float"></attr>        <attr name="images" format="reference"></attr>    </declare-styleable>

三，布局文件 layout

 <com.ttttttt.all.widget.AnimationView            android:id="@+id/animationView"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            AnimationView:images="@array/animationImages"            AnimationView:sleep_time="100" />

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