我编写了一个自定义ImageView，它将从库中选择的图像添加为圆形ImageView。我的代码有问题，每当从设备相机以纵向拍摄照片时，选择加载为位图的照片时它会旋转-90度，但是从设备拍摄的照片正确显示。我无法找到问题所在。 这是代码。
public class DragImageView extends ImageView {
private float mLastTouchX;
private float mLastTouchY;
private float mDeltaX;
private float mDeltaY;
private Bitmap bmpImg;
Context mContext;
float oldDist = 1f;
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
int height = 200;
int width = 240;
int ZoomCounter = 20;
int mode = NONE;
public DragImageView(Context context, Bitmap bmpImg) {
super(context);
this.bmpImg = bmpImg;
this.mContext = context;
init();
// TODO Auto-generated constructor stub
}
public DragImageView(final Context context, final AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
// TODO Auto-generated method stub
Bitmap resized = Bitmap.createScaledBitmap(bmpImg, 180, 200, true);
// Bitmap conv_bm = getCroppedBitmap(resized, 100);
// Bitmap conv_bm = getRoundedCornerBitmap(resized);
Bitmap conv_bm = getRoundedShape(resized);
setImageBitmap(conv_bm);
LayoutInflater layoutInflater = (LayoutInflater) getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View popupView = layoutInflater.inflate(
R.layout.popup_image_adjustment, null);
final PopupWindow popupWindow = new PopupWindow(popupView,
android.app.ActionBar.LayoutParams.WRAP_CONTENT,
android.app.ActionBar.LayoutParams.WRAP_CONTENT);
final Button img_delete = (Button) popupView
.findViewById(R.id.btn_delete_img);
final Button img_rotate = (Button) popupView
.findViewById(R.id.btn_rotate_img);
final SeekBar sb_zoom = (SeekBar) popupView
.findViewById(R.id.seekBar_zoom);
final Button btn_close_window = (Button) popupView
.findViewById(R.id.btn_close);
setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(final View imgView, MotionEvent event) {
btn_close_window.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
popupWindow.dismiss();
}
});
sb_zoom.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
public void onProgressChanged(SeekBar seekBar,
int progress, boolean fromUser) {
// TODO Auto-generated method stub
if (progress >= 100) {
final RelativeLayout.LayoutParams params = (LayoutParams) getLayoutParams();
getLayoutParams().height = progress;
getLayoutParams().width = progress + 40;
setLayoutParams(params);
invalidate();
}
}
});
img_delete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
ViewGroup parentView = (ViewGroup) imgView.getParent();
parentView.removeView(imgView);
if (popupWindow.isShowing()) {
popupWindow.dismiss();
}
}
});
img_rotate.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final RotateAnimation rotateAnim = new RotateAnimation(
0.0f, 90, RotateAnimation.RELATIVE_TO_SELF,
0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f);
rotateAnim.setDuration(0);
rotateAnim.setFillAfter(true);
imgView.startAnimation(rotateAnim);
}
});
final int action = event.getAction();
mLastTouchX = event.getRawX();
mLastTouchY = event.getRawY();
switch (action) {
case MotionEvent.ACTION_DOWN: {
RelativeLayout.LayoutParams lParams = (RelativeLayout.LayoutParams) getLayoutParams();
mDeltaX = mLastTouchX - lParams.leftMargin;
mDeltaY = mLastTouchY - lParams.topMargin;
// popup.show();
if (popupWindow.isShowing()) {
popupWindow.dismiss();
}
break;
}
case MotionEvent.ACTION_MOVE: {
mLastTouchX = event.getRawX();
mLastTouchY = event.getRawY();
final RelativeLayout.LayoutParams params = (LayoutParams) getLayoutParams();
params.leftMargin = (int) (mLastTouchX - mDeltaX);
params.topMargin = (int) (mLastTouchY - mDeltaY);
setLayoutParams(params);
}
break;
case MotionEvent.ACTION_UP:
popupWindow.showAsDropDown(imgView, 10, 0);
}
invalidate();
// popupWindow.dismiss();
return true;
}
});
}
public Bitmap getRoundedShape(Bitmap scaleBitmapImage) {
int targetWidth = 180;
int targetHeight = 200;
Bitmap targetBitmap = Bitmap.createBitmap(targetWidth, targetHeight,
Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(targetBitmap);
Path path = new Path();
path.addCircle(((float) targetWidth - 1) / 2,
((float) targetHeight - 1) / 2,
(Math.min(((float) targetWidth), ((float) targetHeight)) / 2),
Path.Direction.CCW);
canvas.clipPath(path);
Bitmap sourceBitmap = scaleBitmapImage;
canvas.drawBitmap(sourceBitmap, new Rect(0, 0, sourceBitmap.getWidth(),
sourceBitmap.getHeight()), new Rect(0, 0, targetWidth,
targetHeight), null);
return targetBitmap;
}
/**
* Function for circle shaped bitmap
*
* @param bitmap
* @param pixels
* @return
*/
public Bitmap getRoundedRectBitmap(Bitmap bitmap, int pixels) {
Bitmap result = null;
try {
result = Bitmap.createBitmap(200, 200, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(result);
int color = 0xff424242;
Paint paint = new Paint();
Rect rect = new Rect(0, 0, 200, 200);
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawCircle(50, 50, 50, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
} catch (NullPointerException e) {
} catch (OutOfMemoryError o) {
}
return result;
}
/**
* Function for rounded rectangle shape bitmaps
*
* @param bitmap
* @return
*/
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
final float roundPx = 12;
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
}
答案 0 :(得分：0)
尝试检查默认方向并使用设置方向 矩阵如下.....
ExifInterface exif=null;
try {
exif = new ExifInterface(filePath);
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION, 0);
Log.d("EXIF", "Exif: " + orientation);
Matrix matrix = new Matrix();
if (orientation == 6) {
matrix.postRotate(90);
Log.d("EXIF", "Exif: " + orientation);
} else if (orientation == 3) {
matrix.postRotate(180);
Log.d("EXIF", "Exif: " + orientation);
} else if (orientation == 8) {
matrix.postRotate(270);
Log.d("EXIF", "Exif: " + orientation);
}
scaledBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0,
scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix,
true);
} catch (IOException e) {
e.printStackTrace();
}