Question

可以循环将字符输出到屏幕,怎么循环把字符写如一个字符串,在线等

比如 int main()
{
int i;
for (i = 0; i < 128; i++)
printf("%c", i);
return 0;
}这一个是将整数转化为ascii 输入到屏幕;
int main()
{
int i;
char ascii[128];
for (i = 0; i < 128; i++)
sprintf(ascii,"%c", i);
return 0;
}为什么不可以把整数转换为字符循环写入字符串呢??

Answer 1

void android.graphics.Canvas.drawText(String text,float x,float y,Paint paint)

public void drawText (String text, float x, float y, Paint paint)
Since: API Level 1
Draw the text, with origin at (x,y), using the specified paint. The origin is interpreted based on the Align setting in the paint.

Parameters
text The text to be drawn
x The x-coordinate of the origin of the text being drawn
y The y-coordinate of the origin of the text being drawn
paint The paint used for the text (e.g. color, size, style)
用这个drawText方法,需要Canvas canvas,Paint paint两个对象，具体实现如下
for(int i = 0; i < 10; i++){
canvas.drawText (i,10,i*20,paint);
}

Answer 2

第一个字符就是'\0',用%s输出的话直接认为是空字符串