package com.test;import android.R.integer;import android.app.Activity;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Bitmap.Config;import android.graphics.Canvas;import android.os.Bundle;import android.util.Log;import android.view.MotionEvent;import android.view.View;public class MoveDemoActivity extends Activity{ /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new Draw(this)); } // the Canvas to Draw class Draw extends View { Bmp bmp[];// construct public Draw(Context context) { super(context); bmp = new Bmp[4]; { for(int i = 0; i < 4; i++) { bmp[i] = new Bmp(BitmapFactory.decodeStream(getResources().openRawResource(R.drawable.test)), i, i * 50f, i * 60f); } } this.pic = bmp; }// construct public Draw(Context context, Bmp[] pic) { this(context); this.pic = pic; } @Override public void onDraw(Canvas canvas) { super.onDraw(canvas); canvas.drawBitmap(canvasBitmap, 0, 0, null); } // OntouchEvent @Overridepublic boolean onTouchEvent(MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_DOWN) { this.DownX = event.getX(); this.DownY = event.getY(); }// find the picture that User touch and reOrder// this.X = event.getX();// this.Y = event.getY();// order(event); //draw the Canvasif(event.getAction() == MotionEvent.ACTION_MOVE){invalidate(); this.X = event.getX(); this.Y = event.getY(); order(event);this.canvas.drawColor(-232432445);for(int i = 0; i < 3; i++){tempBitmap = pic[0].findByPiority(pic, i);this.canvas.drawBitmap(tempBitmap.getPic(), tempBitmap.getXY(1) - tempBitmap.getPic().getWidth() / 2,tempBitmap.getXY(2) - tempBitmap.getPic().getHeight() / 2, null);}tempBitmap = pic[0].findByPiority(pic, 3);//if((Math.abs(pic[0].findByPiority(pic, 3).getXY(1) - this.X) < pic[0].findByPiority(pic, 3).getPic().getWidth() / 2) // && (Math.abs(pic[0].findByPiority(pic, 3).getXY(2) - this.Y) < pic[0].findByPiority(pic, 3).getPic().getHeight() / 2))//{this.canvas.drawBitmap(tempBitmap.getPic(), pic[0].findByPiority(pic, 3).preX - tempBitmap.getPic().getWidth() / 2,pic[0].findByPiority(pic, 3).preY - tempBitmap.getPic().getWidth() / 2, null);pic[0].findByPiority(pic, 3).preX = X;pic[0].findByPiority(pic, 3).preY = Y;//}//else//{//this.canvas.drawBitmap(tempBitmap.getPic(), tempBitmap.getXY(1) - tempBitmap.getPic().getWidth() / 2,//tempBitmap.getXY(2) - tempBitmap.getPic().getWidth() / 2, null);//} if(event.getAction() == MotionEvent.ACTION_UP) {pic[0].findByPiority(pic, 3).preX = X;pic[0].findByPiority(pic, 3).preY = Y; }} return true;} // reorder the picture public void order(MotionEvent event) { for(int i = 3; i > -1; i--) { if((Math.abs(pic[0].findByPiority(pic, i).getXY(1) - this.X) < pic[0].findByPiority(pic, i).getPic().getWidth() / 2) && (Math.abs(pic[0].findByPiority(pic, i).getXY(2) - this.Y) < pic[0].findByPiority(pic, i).getPic().getHeight() / 2)) { for(Bmp bmp: pic) { if(bmp.getPriority() > pic[0].findByPiority(pic, i).getPriority()) { bmp.priority--; } } pic[0].findByPiority(pic, i).setPiority(3); Log.i("current pic", pic[0].findByPiority(pic, i).toString()); Log.i("current pic******", pic[0].findByPiority(pic, 3).toString());// pic[0].findByPiority(pic, i).preX = X;// pic[0].findByPiority(pic, i).preY = Y; Log.i("dsfdsf", Integer.toString(i)); return; } } } private Bitmap canvasBitmap = Bitmap.createBitmap(480, 500, Config.ARGB_8888); private Bmp tempBitmap = null; private Canvas canvas = new Canvas(canvasBitmap);private float X = 0f; private float Y = 0f;private float DownX = 0f; private float DownY = 0f; private Bmp[] pic = new Bmp[4]; } // @param pic:the Bitmap to draw// @param piority: the order to draw picture// @param preX,preY: the X and Y class Bmp {// 构造器 public Bmp(Bitmap pic, int piority) { this.pic = pic; this.priority = piority; } // 构造器 public Bmp(Bitmap pic, int priority, float preX, float preY) { this(pic, priority); this.preX = preX + pic.getWidth() / 2 * 1.5f; this.preY = preY + pic.getHeight() / 2 * 1.5f; } // findPiority public Bmp findByPiority(Bmp[] pic, int priority) { for(Bmp p : pic) { if(p.priority == priority) { return p; } } return null; } // set Priority public void setPiority(int priority) { this.priority = priority; } // return Priority public int getPriority() { return this.priority; } // return X and Y public float getXY(int i) { if(i == 1) { return this.preX; } else if(i == 2) { return this.preY; } return (Float) null; }// getPicture public Bitmap getPic() { return this.pic; } float preX = 0; float preY = 0; Bitmap pic = null; int priority = 0; }}
