小编Gab*_*ban的帖子

我创建了一个圆形按钮,可以在调用函数时更改颜色.我想要的是创建另一个,创建相同的圆形按钮,但径向渐变从中间开始选择颜色,当你离开圆圈时,它会变为透明.

我使用在如何设置渐变样式来绘制对象时发布了一个类似的代码？但是没有用.

我尝试的代码是这个porpuse是:

mPaint.setShader(new RadialGradient(0, 0, height/3, Color.BLACK, Color.TRANSPARENT, Shader.TileMode.MIRROR));

以下类是我为圆形按钮创建的类.

public class ColorGradientCircleButton extends View{

private Paint mPaint;
private Paint   mBitmapPaint;
private Bitmap  mBitmap;
private Canvas  mCanvas;
private int width, height;

public ColorGradientCircleButton(Context context) {
    super(context);
    init();
}
public ColorGradientCircleButton(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
}
public ColorGradientCircleButton(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
}
private void init() {
    mPaint = new Paint();
    mPaint.setColor(Color.BLACK);
    mPaint.setStrokeWidth(1);
    mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
    mBitmapPaint = new …

我正在使用计时器(10秒钟)System.currentTimemillis.我有一个方法,每秒刷新10次以下代码:

Start是活动的开始时间,它在onCreate方法中被"询问".我知道这很Integer.parseInt(Long.toString(y))有效,因为当我这样做时,我会System.out.println(Integer.parseInt(Long.toString(y)));正确回报时间.

所以,我的问题是我不知道为什么swich不能正常工作.

long y=System.currentTimeMillis()-start;

switch (Integer.parseInt(Long.toString(y))) {           
    case 1000:
        time.setText("3");
        time.setAnimation(anim);
        break;

    case 2000:
        time.setText("2");
        time.setAnimation(anim);
        break;

    case 3000:
        time.setText("1");
        time.setAnimation(anim);
        break;

    case 4000:
        time.setText("GOOO!");
        time.setAnimation(anim);
        count.setVisibility(View.VISIBLE);
        cuenta = 0;
        count.setText("0");
        break;

    case 5000:
        time.setText("1");
        time.setAnimation(anim);
        break;

    case 6000:
        time.setText("2");
        time.setAnimation(anim);
        break;

    case 7000:
        time.setText("3");
        time.setAnimation(anim);
        break;

    case 8000:
        time.setText("4");
        time.setAnimation(anim);
        break;

    case 9000:
        time.setText("5");
        time.setAnimation(anim);
        break;

    case 10000:
        time.setText("Time!");
        time.setAnimation(anim);
        count.setVisibility(View.INVISIBLE);
        break;
}