单击图像按钮时如何旋转图像？

Question

谁能告诉我，我已经开发了Android“ Pair Game”。 所以我需要当我单击图像按钮时，它会旋转图像并显示动物或鸟类的图像。 请告诉我，我该怎么做？

Answer 1

尝试为此使用动画效果-

package com.example.flip3d;

import android.graphics.Camera;
import android.graphics.Matrix;
import android.view.animation.Animation;
import android.view.animation.Transformation;

public class Flip3dAnimation  extends Animation {
private final float mFromDegrees;
private final float mToDegrees;
private final float mCenterX;
private final float mCenterY;
private Camera mCamera;

public Flip3dAnimation(float fromDegrees, float toDegrees,
   float centerX, float centerY) {
mFromDegrees = fromDegrees;
mToDegrees = toDegrees;
mCenterX = centerX;
mCenterY = centerY;
}

@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
}

@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
final float fromDegrees = mFromDegrees;
float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);

final float centerX = mCenterX;
final float centerY = mCenterY;
final Camera camera = mCamera;

final Matrix matrix = t.getMatrix();

camera.save();

camera.rotateY(degrees);

camera.getMatrix(matrix);
camera.restore();

matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);

}

}

我建议您为此参考Flip3dAnimation 。