Android ImageView: how can I get the current rotation angle?
I rotate the image to point the arrow in the desired direction. Before doing the next rotation (using RotateAnimation), how can I get the current rotation angle of the ImageView?
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+3
mraviator
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2 answers
You need to store your previous rotation angle in some variable.
+2
Gennady Pastukhov
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Preserve rotation angle:
ImageView arrow = (ImageView) findViewById(R.id.arrow);
float x = arrow.getPivotX();
float y = arrow.getPivotY();
RotateAnimation anim = new RotateAnimation(arrowRotateStartAngle, arrowRotateXAngle, arrow.getWidth()/2, arrow.getHeight()/2);
anim.setFillAfter(true);
anim.setDuration(1000);
arrow.startAnimation(anim);
temRotate = arrowRotateStartAngle;
arrowRotateStartAngle = arrowRotateXAngle;
arrowRotateXAngle = temRotate;
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Praise song
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