Android ImageSwitcher 实现按钮的3d旋转效果
Rotate3d继承Android的Animation实现3d旋转：
public class Rotate3d extends Animation {
private float mFromDegree;
private float mToDegree;
private float mCenterX;
private float mCenterY;
private float mLeft;
private float mTop;
private Camera mCamera;
private static final String TAG = "Rotate3d";
public Rotate3d(float fromDegree, float toDegree, float left, float top,
float centerX, float centerY) {
this.mFromDegree = fromDegree;
this.mToDegree = toDegree;
this.mLeft = left;
this.mTop = top;
this.mCenterX = centerX;
this.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 FromDegree = mFromDegree;
float degrees = FromDegree + (mToDegree - mFromDegree)
* interpolatedTime;
final float centerX = mCenterX;
final float centerY = mCenterY;
final Matrix matrix = t.getMatrix();
if (degrees <= -76.0f) {
degrees = -90.0f;
mCamera.save();
mCamera.rotateY(degrees);
mCamera.getMatrix(matrix);
mCamera.restore();
} else if (degrees >= 76.0f) {
degrees = 90.0f;
mCamera.save();
mCamera.rotateY(degrees);
mCamera.getMatrix(matrix);
mCamera.restore();
} else {
mCamera.save();
//
mCamera.translate(0, 0, centerX);
mCamera.rotateY(degrees);
mCamera.translate(0, 0, -centerX);
mCamera.getMatrix(matrix);
mCamera.restore();
}
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
}
xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageSwitcher android:id="@+id/imageSwitcher" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout>
activity:
public class TestActivity extends Activity {
private int mCenterX = 160;
private int mCenterY = 0;
private ImageSwitcher imageSwitcher;
private Rotate3d leftAnimation;
private Rotate3d rightAnimation;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);// 显示front
initSecond();
imageSwitcher = (ImageSwitcher) findViewById(R.id.imageSwitcher);
imageSwitcher.setFactory(new OnFactorylmpl());// 设置转换工厂
imageSwitcher.setInAnimation(leftAnimation);// 设置动画
imageSwitcher.setOutAnimation(rightAnimation);// 设置动画
imageSwitcher.setImageResource(R.drawable.background_01);// 设置初始图片
imageSwitcher.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
imageSwitcher.setImageResource(R.drawable.background_02);
v.setEnabled(false);
}
});
}
// 左旋转
public void initFirst() {
leftAnimation = new Rotate3d(0, -90, 0.0f, 0.0f, mCenterX, mCenterY);
rightAnimation = new Rotate3d(90, 0, 0.0f, 0.0f, mCenterX, mCenterY);
leftAnimation.setFillAfter(true);
leftAnimation.setDuration(1000);
rightAnimation.setFillAfter(true);
rightAnimation.setDuration(1000);
}
// 右旋转
public void initSecond() {
leftAnimation = new Rotate3d(-90, 0, 0.0f, 0.0f, mCenterX, mCenterY);
rightAnimation = new Rotate3d(0, 90, 0.0f, 0.0f, mCenterX, mCenterY);
leftAnimation.setFillAfter(true);
leftAnimation.setDuration(1000);
rightAnimation.setFillAfter(true);
rightAnimation.setDuration(1000);
}
private class OnFactorylmpl implements ViewFactory {
@Override
public View makeView() {
ImageView image = new ImageView(TestActivity.this);// 创建图片控件
image.setBackgroundColor(0xFFFFFFFF);// 设置背景颜色
image.setScaleType(ImageView.ScaleType.CENTER); // 设置显示方式
image.setLayoutParams(new ImageSwitcher.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));// 定义组建
return image;
}
}
}