Android实现自定义view-绘制图片

   画到real_bmp上,其他的跟前面的基本上没有什么区别。

import com.example.test.R;import android.app.Activity;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Canvas;import android.os.Bundle;import android.provider.ContactsContract.CommonDataKinds.Event;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.View;public class bmpeffect extends Activity{	 /*	   * 需要一bitmap，重载view，在 canvas上画临时bmp，当按下确定的时候按下	   * 画到real_bmp上,其他的跟前面的基本上没有什么区别	   */	private static Bitmap src;	private static Bitmap heart;	private static Bitmap star;	private static Bitmap star2;	private static int choose;	private int height;	private int width;	public static float bmp_x;    public static  float bmp_y;	private Canvas my_canvas;	public void onCreate(Bundle save){		Log.e("on create", "hello");	  super.onCreate(save);	  src=data.src_bmp;	  if(data.src_bmp==null)		  Log.e("bmp", "null");	  my_canvas=new Canvas(data.src_bmp);	  height=data.src_bmp.getHeight();	  width=data.src_bmp.getWidth();	 heart=data.getbmp(getResources(), R.drawable.small_heart);	 star=data.getbmp(getResources(), R.drawable.small_star);	 star2=data.getbmp(getResources(), R.drawable.star8);	  choose=0;	  setContentView(R.layout.bmptest);  }  public void on_star2(final View v){	  //star8;	  choose=3;	    }  public void on_star(final View v){	  choose=2;  }  public void on_heart(final View v){	  choose=1;  }  public void on_ok(final View v){	 drow_bmp(my_canvas);  }  public static void drow_bmp(Canvas canvas){	  switch(choose){	  case 1:		  canvas.drawBitmap(heart, bmp_x, bmp_y, null);		  break;	  case 2:		  canvas.drawBitmap(star, bmp_x,bmp_y, null);		  break;	  case 3:		  //canvas.drawBitmap(star2, matrix, paint)		  canvas.drawBitmap(star2, bmp_x, bmp_y, null);	  }  }  public static class bmpview extends View{	public bmpview(Context context,AttributeSet attrs) {		super(context,attrs);		// TODO Auto-generated constructor stub	}	 protected void onDraw(Canvas canvas){		 canvas.drawColor(0xff000000);		 Log.i("canvas", "drow");		 if(src!=null){			 canvas.drawBitmap(src, 0, 0, null);		 }		 drow_bmp(canvas);	 }	 public boolean onTouchEvent(MotionEvent event){		 int action=event.getAction();		 //现在应该可以不用区分不同的手势事件了，只需要得到		 bmp_x=event.getX();		 bmp_y=event.getY();		 invalidate();		 return true;	 }  } }

效果如下