先上效果圖:

制作過程是先起一個模擬器，然后把GifCam的框拖到模擬器上面，點擊Rec的new先，然后點擊Rec,然后就save到本地成gif文件

這里做一個左右旋轉，上下旋轉，和左右移動的動畫，先自己建立一個View的類，作為操作的對象:

public class MyView extends View {

private Paint mPaint;

int width = 0;

int height = 0;

public MyView(Context context, AttributeSet attrs) {

super(context, attrs);

mPaint = new Paint();

mPaint.setStrokeWidth(5);

mPaint.setColor(Color.RED);

this.setBackgroundColor(Color.RED);

width = context.getResources().getDimensionPixelSize(R.dimen.width);

height = context.getResources().getDimensionPixelSize(R.dimen.height);

}

@Override

protected void onDraw(Canvas canvas) {

super.onDraw(canvas);

//width 300 height 300

canvas.drawLine(0, 0, width, 0, mPaint);

canvas.drawLine(width, 0, width, height, mPaint);

canvas.drawLine(width, height, 0, height, mPaint);

canvas.drawLine(0, height, 0, 0, mPaint);

canvas.save();

}

}

左右旋轉動畫:

public class RotateLeftRightAnimation extends Animation {

private final float mFromDegrees;

private final float mToDegrees;

private final float mCenterX;

private final float mCenterY;

private final float mDepthZ;

private final boolean mReverse;

private Camera mCamera;

private InterpolatedTimeListener listener;

public RotateLeftRightAnimation(float fromDegrees, float toDegrees, float centerX, float centerY, float depthZ,

boolean reverse) {

mFromDegrees = fromDegrees;

mToDegrees = toDegrees;

mCenterX = centerX;

mCenterY = centerY;

mDepthZ = depthZ;

mReverse = reverse;

}

public static interface InterpolatedTimeListener {

public void interpolatedTime(float interpolatedTime);

}

public void setInterpolatedTimeListener(InterpolatedTimeListener listener) {

this.listener = listener;

}

@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) {

if (listener != null) {

listener.interpolatedTime(interpolatedTime);

}

final float fromDegrees = mFromDegrees;

float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);

boolean overHalf = (interpolatedTime > 0.5f);

if (overHalf) {

degrees = degrees - 180;

}

final float centerX = mCenterX;

final float centerY = mCenterY;

final Camera camera = mCamera;

final Matrix matrix = t.getMatrix();

camera.save();

if (mReverse) {

camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);

} else {

camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));

}

camera.rotateY(degrees); //這個Y軸旋轉就是左右旋轉

camera.getMatrix(matrix);

camera.restore();

matrix.preTranslate(-centerX, -centerY);

matrix.postTranslate(centerX, centerY);//這兩句的意思是把View移到原點后旋轉完再移動到現在的位置

}

}

如果是上線旋轉就把camera.rotateY(degrees)改成camera.rotateX(degrees)

如果是移動的話

public class MoveAnimation extends Animation {

private Camera mCamera;

private float mMoveDistance;

private InterpolatedTimeListener listener;

public MoveAnimation(float moveDistance) {

mMoveDistance = moveDistance;

}

public static interface InterpolatedTimeListener {

public void interpolatedTime(float interpolatedTime);

}

public void setInterpolatedTimeListener(InterpolatedTimeListener listener) {

this.listener = listener;

}

@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) {

if (listener != null) {

listener.interpolatedTime(interpolatedTime);

}

final Camera camera = mCamera;

final Matrix matrix = t.getMatrix();

camera.save();

camera.getMatrix(matrix);

camera.restore();

matrix.postTranslate(mMoveDistance, 0);

}

}

然后主程序這樣來調用:

final MyView myView = (MyView) findViewById(R.id.myview);

Button btn = (Button) findViewById(R.id.btn_move);

btn.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

MoveAnimation anim = new MoveAnimation(200);

anim.setDuration(500);

myView.startAnimation(anim);

}

});

Button btn_up_down_rotate = (Button) findViewById(R.id.btn_up_down_rotate);

btn_up_down_rotate.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

RotateUpDownAnimation anim = new RotateUpDownAnimation(0,

180, v.getWidth() / 2, v.getHeight() / 2, 0, false);

anim.setDuration(500);

myView.startAnimation(anim);

}

});

Button btn_left_right_rotate = (Button) findViewById(R.id.btn_left_right_rotate);

btn_left_right_rotate.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

RotateLeftRightAnimation anim = new RotateLeftRightAnimation(0,

180, v.getWidth() / 2, v.getHeight() / 2, 0, false);

anim.setDuration(500);

myView.startAnimation(anim);

}

});

總結

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