編輯:關於Android編程
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import com.loopj.android.image.SmartImageView;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
public class RoundSmartImageView extends SmartImageView {
private Paint paint;
public RoundSmartImageView(Context context) {
this(context, null);
}
public RoundSmartImageView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public RoundSmartImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
paint = new Paint();
}
/**
* * 繪制圓形圖片
*
* @author caizhiming
*/
@Override
protected void onDraw(Canvas canvas) {
Drawable drawable = getDrawable();
if (null != drawable) {
Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
Bitmap b = getCircleBitmap(bitmap, 14);
final Rect rectSrc = new Rect(0, 0, b.getWidth(), b.getHeight());
final Rect rectDest = new Rect(0, 0, getWidth(), getHeight());
paint.reset();
canvas.drawBitmap(b, rectSrc, rectDest, paint);
} else {
super.onDraw(canvas);
}
}
/**
* * 獲取圓形圖片方法
*
* @param bitmap
* @param pixels
* @return Bitmap
*/
private Bitmap getCircleBitmap(Bitmap bitmap, int pixels) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
int x = bitmap.getWidth();
canvas.drawCircle(x / 2, x / 2, x / 2, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
}
xml中: <包名.view.RoundSmartImageView
android:id=”@+id/user_photo”
android:layout_width=”40dp”
android:layout_height=”40dp” />
.java文件中調用:
RoundSmartImageView mImageView = (RoundSmartImageView) convertView.findViewById(R.id.user_photo);
mImageView.setImageUrl(job.getImgUrl(),R.drawable.ic_launcher); //如果job.getImagUrl()為空,默認加載R.drawable.ic_launcher;
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