http://blog.csdn.net/gf771115/article/details/31354265

http://blog.csdn.net/gf771115/article/details/31354265http://blog.csdn.net/gf771115/article/details/31354265http://blog.csdn.net/gf771115/article/details/31354265http://blog.csdn.net/gf771115/article/details/31354265

Android 如何实现竖排文字显示？

分类：Android/OMS 2014-06-16 10:41 78人阅读评论(0) 收藏举报

转自：http://blog.csdn.net/liaoyp_ios_android/article/details/6949768

在android.graphics.Canvas类中有个沿路径画字的方法
voiddrawTextOnPath(Stringtext,Pathpath,floathOffset,floatvOffset,Paintpaint)
Drawthetext,withoriginat(x,y),usingthespecifiedpaint,alongthespecifiedpath.
voiddrawTextOnPath(char[]text,intindex,intcount,Pathpath,floathOffset,floatvOffset,Paintpaint)
Drawthetext,withoriginat(x,y),usingthespecifiedpaint,alongthespecifiedpath.
Test.java代码://需要在layout中定义Test，且设置背景,在java代码中设置testText
publicclassTestextendsView{
privatePaintpaint;
privatePathpath;
privateMatrixmatrix;
privateintwidth=-1;
privateintheight=-1;
privatefloatleft=3;
privatefloattop=18;
privateStringtitle="";
BitmapDrawabledrawable=(BitmapDrawable)getBackground();
publicTest(Contextcontext,AttributeSetattrs){
super(context,attrs);
paint=newPaint();
paint.setColor(Color.WHITE);//定义字体颜色
paint.setTextSize(14);//定义字体大小
path=newPath();
path.lineTo(0,500);//定义字符路径
matrix=newMatrix();
Log.v("onMeasure","2");
}
@Override
protectedvoidonDraw(Canvascanvas){
//画背景
Bitmapb=Bitmap.createBitmap(drawable.getBitmap(),0,0,width,height);
canvas.drawBitmap(b,matrix,paint);
//画字
showText(canvas,title);
}
privatevoidshowText(Canvascanvas,Stringtext){
floatw;
finalintlen=text.length();
floatpy=0+top;
for(inti=0;i<len;i++){
charc=text.charAt(i);
w=paint.measureText(text,i,i+1);//获取字符宽度
StringBufferb=newStringBuffer();
b.append(c);
if(py>81){//定义字的范围
return;
}
if(isChinese(c)){
py+=w;
if(py>81){
return;
}
canvas.drawText(b.toString(),left,py,paint);//中文处理方法
}else{
canvas.drawTextOnPath(b.toString(),path,py,-left-2,paint);//其他文字处理方法
py+=w;
}
}
}
publicvoidsetText(Stringtitle){
this.title=title;
}
publicStringgetText(){
returntitle;
}
privatebooleanisChinese(charc){
Character.UnicodeBlockub=Character.UnicodeBlock.of(c);
if(ub==Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
||ub==Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
||ub==Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
||ub==Character.UnicodeBlock.GENERAL_PUNCTUATION
||ub==Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
||ub==Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS){
returntrue;
}
returnfalse;
}
//重写View大小方法，使view大小为背景图片大小
@Override
protectedvoidonMeasure(intwidthMeasureSpec,intheightMeasureSpec){
//super.onMeasure(widthMeasureSpec,heightMeasureSpec);
if(null!=getBackground()){
inth=drawable.getIntrinsicHeight();
intw=drawable.getIntrinsicWidth();
Log.v("onMeasure","null!=getBackground()h:"+h+"w:"+w);
width=w;
height=h;
setMeasuredDimension(w,h);
}else{
width=widthMeasureSpec;
height=heightMeasureSpec;
super.measure(widthMeasureSpec,heightMeasureSpec);
}
}
}
在Android中，若要通过程序改变屏幕显示的方向，必须要覆盖setRequestedOrientation()方法，而若要取得目前的屏幕方向，则需要访问getRequestedOrientation()方法。本范例为求简要示范更改做法，设计了一个按钮，当单击按钮的同时，判断当下的屏幕方向，例如竖排（PORTRAIT），则将其更改为横排（LANDSCAPE）；若为横排（LANDSCAPE），则将其更改为竖排（PORTRAIT）

Android(安卓)如何实现竖排文字显示？

Android 如何实现竖排文字显示？

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