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Android 带边框颜色的圆形图像视图_Android_Imageview - Fatal编程技术网

Android 带边框颜色的圆形图像视图

Android 带边框颜色的圆形图像视图,android,imageview,Android,Imageview,我有以下代码使ImageView循环。如何使用颜色实现边框?我试图实施一些解决方案,也包括Stackoverflow上的解决方案,但没有成功。以下是目前的进展情况: public class RoundedImageView extends ImageView { public RoundedImageView(Context context) { super(context); // TODO Auto-generated constructor stu

我有以下代码使ImageView循环。如何使用颜色实现边框?我试图实施一些解决方案,也包括Stackoverflow上的解决方案,但没有成功。以下是目前的进展情况:

public class RoundedImageView extends ImageView {
    public RoundedImageView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }

    public RoundedImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public RoundedImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onDraw(Canvas canvas) {

        Drawable drawable = getDrawable();

        if (drawable == null) {
            return;
        }

        if (getWidth() == 0 || getHeight() == 0) {
            return;
        }
        Bitmap b = ((BitmapDrawable) drawable).getBitmap();
        Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);

        int w = getWidth(), h = getHeight();
        int radius = w < h ? w : h;

        Bitmap roundBitmap = getCroppedBitmap(bitmap, radius, w, h);
        // roundBitmap= ImageUtils.setCircularInnerGlow(roundBitmap, 0xFFBAB399,
        // 4, 1);
        canvas.drawBitmap(roundBitmap, 0, 0, null);

    }

    public static Bitmap getCroppedBitmap(Bitmap bmp, int radius, int w, int h) {
        Bitmap sbmp;
        if (bmp.getWidth() != radius || bmp.getHeight() != radius) {
            float _w_rate = 1.0f * radius / bmp.getWidth();
            float _h_rate = 1.0f * radius / bmp.getHeight();
            float _rate = _w_rate < _h_rate ? _h_rate : _w_rate;
            sbmp = Bitmap.createScaledBitmap(bmp, (int)(bmp.getWidth() * _rate), (int)(bmp.getHeight() * _rate), false);
        }
        else
            sbmp = bmp;

        Bitmap output = Bitmap.createBitmap(sbmp.getWidth(), sbmp.getHeight(),
                Config.ARGB_8888);
        Canvas canvas = new Canvas(output);

        final int color = 0xffa19774;
        final Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, sbmp.getWidth(), sbmp.getHeight());

        paint.setAntiAlias(true);
        paint.setFilterBitmap(true);
        paint.setDither(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(Color.parseColor("#BAB399"));
        canvas.drawCircle(w / 2, h / 2, (w < h ? w : h) / 2, paint);
        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(sbmp, rect, rect, paint);

        return output;
    }


}
public类RoundedImageView扩展了ImageView{
public RoundedImageView(上下文){
超级(上下文);
//TODO自动生成的构造函数存根
}
public RoundedImageView(上下文、属性集属性){
超级(上下文,attrs);
}
public RoundedImageView(上下文、属性集属性、int-defStyle){
超级(上下文、属性、定义样式);
}
@凌驾
受保护的void onDraw(画布){
Drawable Drawable=getDrawable();
if(可绘制==null){
返回;
}
如果(getWidth()==0 | | getHeight()==0){
返回;
}
位图b=((BitmapDrawable)drawable.getBitmap();
位图Bitmap=b.copy(Bitmap.Config.ARGB_8888,true);
int w=getWidth(),h=getHeight();
int半径=w
以下是帮助您的几个步骤:p

1-在drawables文件夹中创建一个可绘制的XML文件,指定纯色和半径

2-将ImageView放置在高于ImageView尺寸的RoundImageView后面


3-将可绘制图像加载到新的ImageView中。

以下是我用来实现带彩色边框的圆形图像视图的代码。希望它能帮助你