2. ÐÞ¸Ä Activity Ëù¶ÔÓ¦µÄ Java ´úÂ룬ʹ֮ÈçÏ£º

package com.pat.gui;

import android.app.Activity;

import android.content.Context;

import android.content.res.Configuration;

import android.content.res.Resources;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.os.Bundle;

import android.util.DisplayMetrics;

import android.view.GestureDetector;

import android.view.MotionEvent;

import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

import android.view.WindowManager;

import android.view.GestureDetector.OnGestureListener;

import android.widget.Toast;

public class ScrollPicture extends Activity

implements

OnGestureListener

{

private int X = 0;

private int Y = 0;

private static int scrollX = 0;

private static int scrollY = 0;

PictureView main;

Bitmap bmp;

Bitmap adapt;

Resources res;

Paint paint;

GestureDetector gestureDetector;

DisplayMetrics dm;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

gestureDetector = new GestureDetector(this);

paint = new Paint();

// »ñȡͼÏñ

res = getResources();

bmp = BitmapFactory.decodeResource(res, R.drawable.desktop);

// »ñȡͼÏñµÄ¿í¶ÈºÍ¸ß¶È

X = bmp.getWidth();

Y = bmp.getHeight();

// adapt ÊÇ bmp ÏÔʾÔÚÆÁÄ»ÉϵÄÄDz¿·ÖͼÏñ£¬¼û PictureView ÖÐµÄ handleScroll ·½·¨

adapt = Bitmap.createBitmap(bmp);

main = new PictureView(this);

// È¥µô±êÌâÀ¸

requestWindowFeature(Window.FEATURE_NO_TITLE);

// È«ÆÁÏÔʾ

this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

//setContentView(R.layout.main);

setContentView(main, new ViewGroup.LayoutParams(X, Y));

// ÒÔ landscape ·½Ê½ÏÔʾ

this.setRequestedOrientation(Configuration.ORIENTATION_LANDSCAPE);

// »ñÈ¡ÆÁÄ»³ß´ç

dm = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(dm);

}

// ÆÁÄ»·­×ªÊ±£¬ÒªÖØлñÈ¡ dm ¡£ÒªÊ¹ onConfigurationChanged ¿ÉÒÔ±»´¥·¢£¬±ØÐë×öµ½£º

// 1. ÔÚ AndroidManifest.xml µÄ Activity ±êÇ©ÖУ¬Ôö¼ÓÊôÐÔ android:configChanges="orientation"

// 2. ÔÚ AndroidManifest.xml £¬ÐëÔö¼ÓȨÏÞ£º

//

// µ±ÆÁÄ»ÏÔʾÓÐ landscape ±ä³É portrait £¬»òÕßÓÐ portrait ±ä³É landscape ÊÇ£¬¶¼»á´¥·¢ onConfigurationChanged

@Override

public void onConfigurationChanged(Configuration newConfig)

{

if(newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE)

{

// »ñÈ¡ÆÁÄ»³ß´ç

dm = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(dm);

// ÖØмÆËã adapt ¡£ÏÔʾ desktop.png µÄ×óÉϽǿªÊ¼£¬Õ¼Õû¸öÆÁÄ»³ß´ç´óСµÄÄDz¿·Ö

adapt = Bitmap.createBitmap(bmp, 0, 0, dm.widthPixels, dm.heightPixels);

// scrollX ºÍ scrollY ·Ö±ðΪÔÚˮƽ»òÕß´¹Ö±·½ÏòÉÏ£¬¹ö¶¯µÄÏñËØÖµ

scrollX = 0;

scrollY = 0;

// ÖØ»­

main.invalidate();