android-风力风向图

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;

/**
 * 
 * 风力风向图
 *
 */
public class LineCharView extends View {

	private Context mContext;

	public int xOrigin;// x原点
	public int yOrigin;// y原地
	public int xLenght;// x轴长
	public int yLenght;// y轴长
	public int xScale;// x刻度
	public int yScale;// y刻度
	public String[] xData;// x轴值
	public String[] yData;// y轴值
	public String[] Data;// 数据
	public String Title;// 标题
	private int[] Xbitmaps;// 风向x
	private int[] Ybitmaps;// 风向Y
	private int bitmapsLenght;
	private Paint paint;
	private Bitmap bitmap;// 风向图标
	private int[] FX;//风向
	private int[] FL;//风力
	private int xS;//x刻度数
	private int yS;//y刻度数
	
//	private int xDialog = -1;
//	private int yDialog = -1;

	public LineCharView(Context context) {
		super(context);
		this.mContext = context;
	}

	public void setLineCharViewInfo(int xOrigin, int yOrigin, int xLenght, int yLenght, int xScale, int yScale,
			String[] xData, String[] yData, String[] Data, String Title, int bitmapsLenght,int[] FX,int[] FL) {
		this.xOrigin = xOrigin;
		this.yOrigin = yOrigin;
		this.xLenght = xLenght;
		this.yLenght = yLenght;
		this.xScale = (int)xLenght/xScale;
		this.yScale = (int)yLenght/yScale;
		this.xData = xData;
		this.yData = yData;
		this.Title = Title;
		this.bitmapsLenght = bitmapsLenght;
		this.FX = FX;
		this.FL = FL;
		this.xS = xScale;
		this.yS = yScale;
	}

	@Override
	protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		paint = new Paint();
		paint.setStyle(Paint.Style.STROKE);
		paint.setColor(Color.BLUE);
		paint.setAntiAlias(true);
		paint.setTextSize(20);

		canvas.drawLine(xOrigin, yOrigin - yLenght, xOrigin, yOrigin, paint);//x轴
		canvas.drawLine(xOrigin, yOrigin, xOrigin + xLenght, yOrigin, paint);//y轴

		for (int i = 0; i * yScale < yLenght; i++) {
//			if (i > 0) {
//				PathEffect effects = new DashPathEffect(new float[] { 5, 5, 5, 5 }, 1);// 画虚线
//				paint.setPathEffect(effects);
				if (i < yS) {
					paint.setColor(Color.GRAY);
					canvas.drawLine(xOrigin, yOrigin - i * yScale, xOrigin + xLenght, yOrigin - i * yScale, paint);
				}
				paint.setColor(Color.BLUE);
				canvas.drawText(yData[i], xOrigin - 40, yOrigin - i * yScale + 5, paint);
//			}
		}
		canvas.drawLine(xOrigin, yOrigin - yLenght, xOrigin - 5, yOrigin - yLenght + 10, paint);//箭头
		canvas.drawLine(xOrigin, yOrigin - yLenght, xOrigin + 5, yOrigin - yLenght + 10, paint);

		Xbitmaps = new int[bitmapsLenght];
		Ybitmaps = new int[bitmapsLenght];
		for (int i = 0; i * xScale < xLenght; i++) {
			if (i < xS) {
				paint.setColor(Color.GRAY);
				canvas.drawLine(xOrigin + i * xScale, yOrigin, xOrigin + i * xScale, yOrigin - yLenght, paint);
			}
			paint.setColor(Color.BLUE);
			canvas.drawText(xData[i], xOrigin + i * xScale - 5, yOrigin + 30, paint);
			if (i < xS) {
				int bit = FX[i];
				int y = FL[i];
				//根据风向的值设置不同的图片显示,风向有8个方向
				if (bit == 1) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a1);
				} else if (bit == 2) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a2);
				} else if (bit == 3) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a3);
				} else if (bit == 4) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a4);
				}else if (bit == 5) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a2);
				} else if (bit == 6) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a3);
				} else if (bit == 7) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a4);
				} else if (bit == 8) {
					bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a4);
				}
				canvas.drawBitmap(bitmap, xOrigin + i * xScale - 10, yOrigin - y, paint);
				Xbitmaps[i] = xOrigin + i * xScale - 8;
				Ybitmaps[i] = yOrigin - y;
			}
		}
		
		/*if (xDialog != -1) {
			RectF rectF = new RectF(xDialog-10, yDialog-100, xDialog+120, yDialog-50);
			canvas.drawRect(rectF, paint);
			canvas.drawLine(xDialog-10, yDialog-50, xDialog-15, yDialog+10, paint);
			canvas.drawText("X:"+xDialog+"\nY:"+yDialog, xDialog, yDialog-70, paint);
		}*/

		canvas.drawLine(xOrigin + xLenght, yOrigin, xOrigin + xLenght - 10, yOrigin - 5, paint);
		canvas.drawLine(xOrigin + xLenght, yOrigin, xOrigin + xLenght - 10, yOrigin + 5, paint);

		paint.setColor(Color.BLUE);
		paint.setTextSize(26);
		canvas.drawText(Title, xOrigin + xLenght / 3, yOrigin + 60, paint);
	}

	@Override
	public boolean onTouchEvent(final MotionEvent event) {
		if (event.getAction() == MotionEvent.ACTION_DOWN) {
			Log.d("TAG", "ACTION_DOWN" + event.getX() + "--" + event.getY());
			int checkBitmapClick = CheckBitmapClick(event.getX(), event.getY());
//			xDialog = (int)event.getX();
//			yDialog = (int)event.getY();
			if (checkBitmapClick > -1) {
//				Toast.makeText(mContext, checkBitmapClick + ":checkBitmapClick", Toast.LENGTH_LONG).show();
				new AlertDialog.Builder(mContext).setTitle(Title)
						.setMessage("x:" + event.getX() + "\ny:" + event.getY()+"\n风向:"+FX[checkBitmapClick]+"\n风力:"+FL[checkBitmapClick]).setNegativeButton("no", null)
						.setPositiveButton("ok", new DialogInterface.OnClickListener() {
							
							@Override
							public void onClick(DialogInterface dialog, int which) {
								//invalidate();
							}
						}).show();
			}
		}
		return true;
	}

	private int CheckBitmapClick(float DownX, float DownY) {
		for (int j = 0; j < Ybitmaps.length; j++) {
			for (int i = 0; i < Xbitmaps.length; i++) {//判断点击的范围是否是风向图片的范围内
					if ((Xbitmaps[i] <= (int) DownX && (int) DownX <= Xbitmaps[i] + 32)
							&& (Ybitmaps[j] <= (int) DownY && (int) DownY <= Ybitmaps[j] + 32)) {
						Log.d("TAG", "CheckBitmapClick" + DownX + "--" + DownY+"--"+Xbitmaps[i]+"---"+Ybitmaps[j]);
						return i;
				}
			}
		}
		return -1;
	}

}

import android.os.Bundle;
import android.app.Activity;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		LineCharView lineCharView = new LineCharView(this);
		lineCharView.setLineCharViewInfo(60, 400, 580, 380, 7, 6,
				new String[] { "1", "2", "3", "4", "5", "6", "7", "day"},
				new String[] { "","50", "100", "150", "200", "250","km/h"},
				new String[] { "1", "2", "3", "4", "5", "6", "7", ""}, "LineCharView",12,new int[]{1,2,3,1,3,4,6},new int[]{50,200,50,30,60,140,150});
		setContentView(lineCharView);
	}

}