About adjusting Uilabel or uitextview line spacing

#define LINENUM 20//Line width

#define Lineheight 20//Row height

int begin=0;

NSString *partialstring;

nsstring* str=@ "Southeast shape wins, three Wu Metropolis, Qian Tong has been prosperous since ancient times." The Smoke Willow Painting Bridge, the wind curtain cui curtain, staggered 100,000 others. Cloud tree around the sand, roughs roll frost Snow, natural moat Infinite. The city row Zhu Ji Nanxiong, the household surplus sophistication, competes lucullan. The heavy Lake fold Qing Jia, have ploughing gui son, ten Li Lotus. Qiang tube to clear, Ling song Pan night, hippie fishing old Lotus Doll. Thousand riding high nga, drunk listen to Xiao Drum, yin appreciation haze. Alrelistingy map will be well, return to Phoenix Pond boast. Cloud tree around the sand, roughs roll frost Snow, natural moat Infinite. The city row Zhu Ji Nanxiong, the household surplus sophistication, competes lucullan. The heavy Lake fold Qing Jia, have ploughing gui son, ten Li Lotus. Qiang tube to clear, Ling song Pan night, hippie fishing old Lotus Doll. Thousand riding high nga, drunk listen to Xiao Drum, yin appreciation haze. Alrelistingy map will be well, return to Phoenix Pond boast. ";

int num = Str.length/linenum;

NSLog (@ "%d", str.length);

NSLog (@ "%d", num);

for (int i=0; i<=num; i++) {

uitextview* Textview=[[uitextview Alloc]init];

NSLog (@ "%d-----", begin);

if (i==num)

Partialstring=[str Substringwithrange:nsmakerange (Begin,str.length%linenum)];

Else

Partialstring=[str Substringwithrange:nsmakerange (Begin,linenum)];

Textview.backgroundcolor=[uicolor Clearcolor];

textview.text=partialstring;

Textview.frame=cgrectmake (0, 30+i*lineheight, 200, 30);

[Self.view Addsubview:textview];

Begin+=linenum;

NSLog (@ "%@", partialstring);

}