自定义ImageView控件，根据重力感应，图片左右摇摆(只是类似于摇一摇的简单Demo。真机测试，不要用虚拟机，虚拟机没有重力感应。会有抖动现象，因为重力感应一直在变，可以参考下http://download.csdn.net/detail/daweibalang717/6800609，请下载后自己完善)

下面是主代码：

public void setText(String text,float size){

this.text = text;

myPaint.setColor(Color.WHITE);

myPaint.setTextSize(size);

myPaint.setAntiAlias(true);//防止边缘的锯齿

myPaint.setFilterBitmap(true);//对位图进行滤波处理。

FontMetrics fm = myPaint.getFontMetrics(); //字体属性集

TextHeight = (float) Math.ceil(fm.descent - fm.top); //文字的高

float [] widths = new float[text.length()];

myPaint.getTextWidths(text, widths);

for (int i =0;i

TextWidth += widths[i];

}

}

public void setImage(int id){

bitmap = BitmapFactory.decodeResource(context.getResources(), id);

BufferBitmap = Bitmap.createBitmap(bitmap.getWidth()+width_padding, bitmap.getHeight()+height_padding, bitmap.getConfig());//因为要摆动，宽高增加一些

mCanvas = new Canvas(BufferBitmap);

isHavaeImage = true;

}

@Override

protected void onDraw(Canvas canvas)

{

// TODO Auto-generated method stub

super.onDraw(canvas);

}

@Override

public void doRotate(float x)

{

// TODO Auto-generated method stub

synchronized (this)

{

float degrees = (x / 10 )*90; // 求出角度。 x的重力加速度最大值为10 90度

System.out.println("偏角:"+ degrees);

matrix.postRotate(degrees-myDegress,BufferBitmap.getWidth()/2,0);

myDegress = degrees;

if(isHavaeImage && degrees>=-20.0 && degrees <=20.0){ //最大最小偏转度为20 -20；

clear(mCanvas);

mCanvas.setMatrix(matrix);

mCanvas.drawBitmap(bitmap,width_padding/2,0, myPaint);

mCanvas.drawText(text,(bitmap.getWidth()+width_padding-TextWidth)/2,bitmap.getHeight()/2+TextHeight, myPaint);//文字是以左下点为坐标的

setImageBitmap(BufferBitmap);//把缓存图形设置给Imageview;

invalidate();

}

}

}

public void clear(Canvas cancas){

Paint paint = new Paint();

paint.setXfermode(new PorterDuffXfermode(Mode.CLEAR));

cancas.drawPaint(paint);

}