android课程表的绘制

import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Paint.Style;
import android.text.Layout.Alignment;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.FrameLayout;
/**
 * 
 * @author jia
 *
 */
public class WeekView extends FrameLayout{
private int s_cellX;//起始X坐标 start_cellX;
private int s_cellY;//起始Y坐标 start_cellY;
private int col;//行
private int row;//列

private int col_height;//每一行的高度
private int row_width;//每一列的宽度

private int plus_hslide;//加号偏移的高度
private int plus_vslide;//加号便宜的宽度


private List<Course>  list=new ArrayList<Course>();//课程信息
private List<CourseTimes> courseTimes=new ArrayList<CourseTimes>();//课程安排


private FormListener  formListener;//点击画布上课程时事件触发
private String        date;//设置日期

public void setCol(int col) {
this.col = col;
}
public void setDate(String date) {
this.date = date;
}
public void setList(List<Course> list) {
this.list = list;
}
public FormListener getFormListener() {
return formListener;
}
public void setFormListener(FormListener formListener) {
this.formListener = formListener;
}
public WeekView(Context context, AttributeSet attrs) {
super(context, attrs);
       // TODO Auto-generated constructor stub
row=7;
setWillNotDraw(false);
s_cellX=(int)context.getResources().getDimension(R.dimen.space_0);
s_cellY=(int)context.getResources().getDimension(R.dimen.space_0);
col_height=(int)context.getResources().getDimension(R.dimen.space_48);
row_width=(int)context.getResources().getDimension(R.dimen.space_80);
plus_hslide=(int)context.getResources().getDimension(R.dimen.space_3);
plus_vslide=(int)context.getResources().getDimension(R.dimen.space_0);
}

@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);
if(list.size()==0){
drawPlus(canvas);
}else{
drawPlus(canvas);
drawSchedule(canvas);
}



}

/**
private void drawForm(Canvas canvas){
Paint paint=new Paint();
paint.setAntiAlias(true);//设置画笔的锯齿效果
paint.setStyle(Style.FILL);//实心
paint.setTextAlign(Align.CENTER);
int cellX = 0,cellY = 0,cellBX = 0,cellBY = 0;


for(int i=0;i<row;i++){
for(int j=0;j<col;j++){
cellX=s_cellX+i*row_width;   //0
cellY=s_cellY+j*col_height; //0,50,100
cellBX=s_cellX+(i+1)*row_width;//40 
cellBY=s_cellY+(j+1)*col_height; //50,100,150

int cellsNum = i + j * row;

setDrawColor(paint, cellsNum);

canvas.drawRect(cellX, cellY, cellBX, cellBY, paint);


   drawCellText(canvas, cellX, cellY, cellBX, cellBY,""+cellsNum);
 
}
}
}
*/

private void drawSchedule(Canvas canvas){
Paint paint=new Paint();
paint.setAntiAlias(true);//设置画笔的锯齿效果
paint.setStyle(Style.FILL);//实心
paint.setTextAlign(Align.CENTER);
paint.setColor(Color.TRANSPARENT);
int cellX=0,cellY=0;
int cellBX=0,cellBY=0;
for(int i=0;i<list.size();i++){
String name=list.get(i).getName();
courseTimes=list.get(i).getCourseTimes();
for(int j=0;j<courseTimes.size();j++){
if(StringUtils.ConvertDataType(courseTimes.get(j).getWeeks()).toString().contains(DateUtil.getNowWeek(date.toString().trim()))){
StringBuilder  sb=new StringBuilder();
sb.append(name).append("@");
sb.append(courseTimes.get(j).getClassroom());
int start_coordinate=courseTimes.get(j).getStart()-1;//行开始
int end_coordinate=courseTimes.get(j).getEnd()-1;//行结束
int week_coordinate=courseTimes.get(j).getWeekday()-1;//列数
if(start_coordinate>end_coordinate){
break;
}else{
cellX=s_cellX+week_coordinate*row_width;

cellY=s_cellY+start_coordinate*col_height;

cellBX=s_cellX+(week_coordinate+1)*row_width;

cellBY=s_cellY+(end_coordinate+1)*col_height;

int area=week_coordinate+start_coordinate;

setDrawColor(paint, area);

canvas.drawRect(cellX, cellY, cellBX, cellBY, paint);


drawCellText(canvas, cellX, cellY, cellBX, cellBY,sb.toString());
}
}
}
}
}
/**
* 绘制加号
* @param canvas
*/
private void drawPlus(Canvas canvas){
Paint paint=new Paint();
paint.setAntiAlias(true);//设置画笔的锯齿效果
paint.setColor(Color.GRAY);
paint.setStyle(Style.FILL);//实心
paint.setTextAlign(Align.CENTER);
int cellX = 0,cellY = 0;
for(int i=1;i<=row;i++){
for(int j=1;j<=col;j++){
cellX=row_width+(i-1)*row_width+plus_vslide;   //120
cellY=col_height+(j-1)*col_height+plus_hslide; //100
canvas.drawText("+", cellX, cellY, paint);
}
}

}
private void setDrawColor(Paint paint,int cellsNum){
switch((cellsNum+1)%7){
case 0:
paint.setColor(getResources().getColor(R.color.week_one));
break;
case 1:
paint.setColor(getResources().getColor(R.color.week_two));
break;
case 2:
paint.setColor(getResources().getColor(R.color.week_three));
break;
case 3:
paint.setColor(getResources().getColor(R.color.week_four));
break;
case 4:
paint.setColor(getResources().getColor(R.color.week_five));
break;
case 5:
paint.setColor(getResources().getColor(R.color.week_six));
break;
case 6:
paint.setColor(getResources().getColor(R.color.week_seven));
break;
}
}
/**
* 绘制单元格内容
* @param canvas
* @param cellX
* @param cellY
* @param cellBX
* @param cellBY
* @param text
*/
private void drawCellText(Canvas canvas, int cellX, int cellY, int cellBX,
           int cellBY, String text) {
/**
*此种方式不支持换行  
       Paint paint = new Paint();
       paint.setFlags(Paint.ANTI_ALIAS_FLAG);
       paint.setColor(Color.BLACK); // 字体颜色
       paint.setTextSize(getResources().getDimension(R.dimen.text_size_16));
       int textX=cellX;
       int textY=cellY+(cellBY-cellY)/2;
       canvas.drawText(text, textX, textY, paint);//将文字绘制在什么位置
*/
//绘制的文本内容换行     
       TextPaint textPaint = new TextPaint();       
       textPaint.setColor(Color.BLACK);
       textPaint.setTextSize(getResources().getDimension(R.dimen.text_size_12));
       StaticLayout layout = new StaticLayout(text,textPaint,row_width,Alignment.ALIGN_NORMAL,1.0F,0.0F,true);     
       canvas.translate(cellX, cellY);//偏移到某个位置绘制
       layout.draw(canvas);        
       canvas.translate(-cellX, -cellY);//偏移之后复位 ，以免影响其他的
   }

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// TODO Auto-generated method stub
setMeasuredDimension(row*row_width, col*col_height);
}



@Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
float touchX = event.getX();
float touchY = event.getY();
boolean down_flag=false;
boolean move_flag=false;
boolean up_flag=false;
//点在什么区域
/**
int antion = event.getAction();

if (antion == MotionEvent.ACTION_DOWN) {
//判断在那个点
onTouchPanle(touchX, touchY);
}
*/
switch(event.getAction()){
case MotionEvent.ACTION_DOWN:
down_flag=true;
break;
case MotionEvent.ACTION_UP:
up_flag=true;
break;
case MotionEvent.ACTION_MOVE:
move_flag=true;
break;
}
if(!down_flag&&up_flag&&!move_flag){
onTouchPanle(touchX, touchY);
}
/** 
* 如果不注释掉改为返回true的话，只执行action_down
* */
// return super.onTouchEvent(event);
return true;
}




/**
* 
* @param x
* @param y
* @return
* row_width 列宽 80
* col_height 行高50
*/
public boolean onTouchPanle(float x, float y) {
//适用于课程表
        if (x > s_cellX && y > s_cellY && x < s_cellX+row_width*row
                && y < s_cellY + col_height * col) {  
        long courseID = -1;
        for(int i=0;i<list.size();i++){
        courseTimes=list.get(i).getCourseTimes();
       
        for(int j=0;j<courseTimes.size();j++){
        int start_coordinate=courseTimes.get(j).getStart()-1;//行开始
    int end_coordinate=courseTimes.get(j).getEnd()-1;//行结束
    int week_coordinate=courseTimes.get(j).getWeekday()-1;//列数
   
    if(x>=week_coordinate*row_width&&x<=(week_coordinate+1)*row_width&&y>=start_coordinate*col_height&&y<=(end_coordinate+1)*col_height){
    courseID=list.get(i).getId();
    }
        }
        }
       
        formListener.ShowCourseInfo(courseID);
        
        /** 适用于一个一个格子
        int ty = (int) ((y - s_cellY) / col_height);                   
        int tx;           
            if(x -s_cellX > 0) {
                tx = (int) ((x -s_cellX) / row_width);
            }else{
                tx = 0;
            }
            int index = ty * row + tx;
            formListener.showNum(""+index);
            
            */
            return true;
        }


        return false;
    }

}

public interface FormListener {
    public void ShowCourseInfo(long courseID);
}