android 下载文件图片圆形进度条

public class CircleProgressImageView extends View {    private RectF mRect;    private Paint mPaint;    private int mCircleStoreWidth = 50;    /**     * 最大进度值     */    private int mMaxProcessValue = 100;    /**     * 进度值     */    private int mProcessValue  = -1;    private int width;    private int height;    private int bitmap;    private Bitmap drawBitmap;    private Context context;    public CircleProgressImageView(Context context) {        this(context, null);    }    public CircleProgressImageView(Context context, AttributeSet attrs) {        this(context, attrs, 0);    }    public CircleProgressImageView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        init(context, attrs, defStyleAttr);    }    private void init(Context context, AttributeSet attrs, int defStyleAttr) {        this.context = context;        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CIRCLEPROGRESSIMAGEVIEWATTRS);        bitmap = a.getResourceId(R.styleable.CIRCLEPROGRESSIMAGEVIEWATTRS_imagers, R.mipmap.fujian_icon);        drawBitmap = BitmapFactory.decodeResource(context.getResources(), bitmap);        mRect = new RectF();        mPaint = new Paint();        mPaint.setAntiAlias(true);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        width = 120;        height = 100;        mRect.left = mCircleStoreWidth / 2 - 10;        mRect.top = mCircleStoreWidth / 2 - 10;        mRect.right = width - mCircleStoreWidth / 2 + 10;        mRect.bottom = width - mCircleStoreWidth / 2 + 10;    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        canvas.drawColor(Color.TRANSPARENT);        //画圆        float imageLeft = width  - drawBitmap.getWidth() ;        float imageTop = height - drawBitmap.getHeight();        canvas.drawBitmap(drawBitmap, imageLeft, imageTop, mPaint);        if (mProcessValue > 0 && mProcessValue != 100){            mPaint.setColor(getResources().getColor(R.color.color_800000));            mPaint.setStyle(Paint.Style.FILL_AND_STROKE);            mPaint.setStrokeWidth(mCircleStoreWidth);            canvas.drawRect(mRect,mPaint);            mPaint.setStyle(Paint.Style.STROKE);            mPaint.setStrokeWidth(3);            mPaint.setColor(getResources().getColor((R.color.color_80FFFFFF)));            canvas.drawArc(mRect,-90,360,false ,mPaint);            mPaint.setStyle(Paint.Style.FILL);            mPaint.setStrokeWidth(mCircleStoreWidth);            canvas.drawArc(mRect,-90,((float) mProcessValue/mMaxProcessValue)*360,true,mPaint);        }    }    public int getmCircleStoreWidth() {        return mCircleStoreWidth;    }    public void setmCircleStoreWidth(int mCircleStoreWidth) {        this.mCircleStoreWidth = mCircleStoreWidth;    }    public int getmProcessValue() {        return mProcessValue;    }    public void setmProcessValue(int mProcessValue) {        this.mProcessValue = mProcessValue;        invalidate();    }
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