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Java 无法在适配器中放置圆形imageview_Java_Android_Android Listview_Custom Adapter - Fatal编程技术网

Java 无法在适配器中放置圆形imageview

Java 无法在适配器中放置圆形imageview,java,android,android-listview,custom-adapter,Java,Android,Android Listview,Custom Adapter,我有一个带有自定义适配器的listview,其中有一个imageview。这个imageview是圆形的,我使用这个类: public class CircularImageView extends ImageView { public CircularImageView(Context context) { super(context); // TODO Auto-generated constructor stub } public CircularImageView(C

我有一个带有自定义适配器的listview,其中有一个imageview。这个imageview是圆形的,我使用这个类:

public class CircularImageView extends ImageView {

public CircularImageView(Context context) {
    super(context);
    // TODO Auto-generated constructor stub
}

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

public CircularImageView(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();


    Bitmap roundBitmap =  getCroppedBitmap(bitmap, w);
    canvas.drawBitmap(roundBitmap, 0,0, null);

}

public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {
    Bitmap sbmp;
    if(bmp.getWidth() != radius || bmp.getHeight() != radius)
        sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, 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(sbmp.getWidth() / 2+0.7f, sbmp.getHeight() / 2+0.7f,
            sbmp.getWidth() / 2+0.1f, paint);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    canvas.drawBitmap(sbmp, rect, rect, paint);


            return output;
}

}
如果我在布局xml中写入

 <com.myapp.utility.CircularImageView
            android:id="@+id/image"
            android:layout_centerVertical="true"
            android:layout_width="75dp"
            android:layout_height="75dp"
            android:layout_marginLeft="16dp"
            android:adjustViewBounds="true"
            android:src="@drawable/icon"
            android:scaleType="centerCrop" />
在这里:image.setBackgroundResourcemyImageList[i];我设置了我的图像,但我不能像设置静态图像时那样显示圆形图像。我还试着写:

CircularImageView image = (CircularImageView) view.findViewById(R.id.image);

但仍然没有改变..怎么了?

您能尝试使用setImageResource而不是SetBackgroundResource吗?据我所知,它们是不同的资源。哦,天哪。。它起作用了。。我的错!非常抱歉,非常感谢!
CircularImageView image = (CircularImageView) view.findViewById(R.id.image);