标签：android style color os ar java sp on art
============问题描述============
//画笔，定义绘制属性
private Paint myPaint;
private Paint mBitmapPaint;
// 绘制路径
private Path myPath;
// 画布及其底层位图
private Bitmap myBitmap0;
private Bitmap myBitmap1;
private Canvas myCanvas;
public MyPaintView(Context context, AttributeSet attrs){
super(context, attrs);
myBitmap0 = BitmapFactory.decodeFile("/storage/sdcard/a.png").copy(Bitmap.Config.ARGB_8888, true);
myBitmap1 = Bitmap.createBitmap(myBitmap0);
if(i == 0){
initialize();
}else if(i == 1){
initWhite();
}
// 开启线程
new Thread(this).start();
}
public void initialize(){
// 绘制自由曲线用的画笔
myPaint = new Paint();
myPaint.setAntiAlias(true);
myPaint.setDither(true);
myPaint.setColor(RGBColor.getColor());
myPaint.setStyle(Paint.Style.STROKE);
myPaint.setStrokeJoin(Paint.Join.ROUND);
myPaint.setStrokeCap(Paint.Cap.ROUND);
myPaint.setStrokeWidth(RGBColor.getFontSize());
myPath = new Path();
mBitmapPaint = new Paint(Paint.DITHER_FLAG);
}
@Override
protected void onDraw(Canvas canvas){
super.onDraw(canvas);
// 背景颜色
canvas.drawColor(R.color.white);
canvas.drawBitmap(myBitmap1, 0, 0, mBitmapPaint);
canvas.drawPath(myPath, myPaint);
myCanvas = new Canvas(myBitmap1);
}
/**
* 图片旋转
* */
public void picPost(int nPostExtent){
matrix.reset();
matrix.postScale(Scale, Scale);
matrix.postRotate(nPostExtent);
// 下面这句话如果把myBitmap1都改为myBitmap0的话顺时针和逆时针旋转都没有问题，现在需要用myBitmap1,是因为在这个位图上面先涂鸦了再旋转的话就会清空以前涂鸦内容，所以选用myBitmap1，但是用它的话只能朝着一个方向旋转，先顺时针完了，逆时针就回不来了
myBitmap1 = Bitmap.createBitmap(myBitmap1, 0, 0, myBitmap1.getWidth(), myBitmap1.getHeight(), matrix, true);
}
============解决方案1============
标签：android style color os ar java sp on art
原文地址：http://www.cnblogs.com/lmyangbk/p/4038733.html
