android 文字图片合成

引用：http://blog.csdn.net/cq361106306/article/details/8142526

两种方法：
1.直接在图片上写文字
Stringstr="PICC要写的文字";
ImageViewimage=(ImageView)this.findViewById(R.id.ImageView);
Bitmapphoto=BitmapFactory.decodeResource(this.getResources(),R.drawable.text);
intwidth=photo.getWidth(),hight=photo.getHeight();
System.out.println("宽"+width+"高"+hight);
icon=Bitmap.createBitmap(width,hight,Bitmap.Config.ARGB_8888);//建立一个空的BItMap
Canvascanvas=newCanvas(icon);//初始化画布绘制的图像到icon上
PaintphotoPaint=newPaint();//建立画笔
photoPaint.setDither(true);//获取跟清晰的图像采样
photoPaint.setFilterBitmap(true);//过滤一些
Rectsrc=newRect(0,0,photo.getWidth(),photo.getHeight());//创建一个指定的新矩形的坐标
Rectdst=newRect(0,0,width,hight);//创建一个指定的新矩形的坐标
canvas.drawBitmap(photo,src,dst,photoPaint);//将photo缩放或则扩大到dst使用的填充区photoPaint
PainttextPaint=newPaint(Paint.ANTI_ALIAS_FLAG|Paint.DEV_KERN_TEXT_FLAG);//设置画笔
textPaint.setTextSize(20.0f);//字体大小
textPaint.setTypeface(Typeface.DEFAULT_BOLD);//采用默认的宽度
textPaint.setColor(Color.RED);//采用的颜色
//textPaint.setShadowLayer(3f,1,1,this.getResources().getColor(android.R.color.background_dark));//影音的设置
canvas.drawText(str,20,26,textPaint);//绘制上去字，开始未知x,y采用那只笔绘制
canvas.save(Canvas.ALL_SAVE_FLAG);
canvas.restore();
image.setImageBitmap(icon);
saveMyBitmap(icon);
2.将两个图片合成
onCreat方法里面{
Bitmapmark=BitmapFactory.decodeResource(this.getResources(),R.drawable.icon);
Bitmapphoto=BitmapFactory.decodeResource(this.getResources(),R.drawable.text);
Bitmapa=createBitmap(photo,mark);
image.setImageBitmap(a);
saveMyBitmap(a);
}
privateBitmapcreateBitmap(Bitmapsrc,Bitmapwatermark)
{
Stringtag="createBitmap";
//Log.d(tag,"createanewbitmap");
if(src==null)
{
returnnull;
}
intw=src.getWidth();
inth=src.getHeight();
intww=watermark.getWidth();
intwh=watermark.getHeight();
//createthenewblankbitmap
Bitmapnewb=Bitmap.createBitmap(w,h,Config.ARGB_8888);
//创建一个新的和SRC长度宽度一样的位图
Canvascv=newCanvas(newb);
//drawsrcinto
cv.drawBitmap(src,0,0,null);//在0，0坐标开始画入src
//drawwatermarkinto
cv.drawBitmap(watermark,w-ww+5,h-wh+5,null);//在src的右下角画入水印
//saveallclip
cv.save(Canvas.ALL_SAVE_FLAG);//保存
//store
cv.restore();//存储
returnnewb;
}
//保存图片到data下面
publicvoidsaveMyBitmap(Bitmapbmp){
FileOutputStreamfos=null;
try{
fos=openFileOutput("image1.jpg",Context.MODE_PRIVATE);
bmp.compress(Bitmap.CompressFormat.JPEG,100,fos);
}catch(FileNotFoundExceptione){
}finally{
if(fos!=null){
try{
fos.flush();
fos.close();
}catch(IOExceptione){
}
}
}
}

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