Android 翻书效果以及txt文件阅读器完整源码

【核心代码】
PageTurnActivity.Javapackage com.anjoyoe.luu;   import java.io.File; import java.io.IOException; import java.util.Arraylist; import java.util.List; import Android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.util.DisplayMetrics; import android.view.Menu; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.view.Window; import android.view.WindowManager; import android.view.animation.AnimationUtils; import android.widget.LinearLayout; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; import android.widget.TextView; import android.widget.Toast; import com.anjoyoe.tool.BookPageFactory; import com.anjoyoe.widget.Mymenu; import com.anjoyoe.widget.PageWidget;   public class PageTurnActivity extends Activity {       private PageWidget mPageWidget;     Bitmap mCurPageBitmap, mNextPageBitmap;     Canvas mCurPaGECanvas, mNextPageCanvas;     BookPageFactory pagefactory;     File filepath;     private int screenWidth = 0;     private int screenHeight = 0;     // --------------------卢---------------     public Mymenu mMenu;     SeekBar bar;     SharedPreferences pre;     SharedPreferences.Editor ed;     // --------------------lu--------------------       private static final int[] resBitmap = { R.drawable.p1, R.drawable.p2,             R.drawable.p3 };       @override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         requestWindowFeature(Window.FEATURE_NO_TITLE);         getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,                 WindowManager.LayoutParams.FLAG_FULLSCREEN);           List<Bitmap> bitmaps = new ArrayList<Bitmap>();           Resources res = getResources();         for (int r : resBitmap) {             bitmaps.add(((BitmapDrawable) res.getDrawable(r)).getBitmap());         }         DisplayMetrics dm = new DisplayMetrics();         getWindowManager().getDEFAULTDisplay().getMetrics(dm);         screenWidth = dm.widthPixels;         screenHeight = dm.heightPixels;         mPageWidget = new PageWidget(this, screenWidth, screenHeight);         pagefactory = new BookPageFactory(this, bitmaps, screenWidth,                 screenHeight);         // ---------------------卢---------------------------------------           pre = getSharedPreferences("activit",MODE_WORLD_WRITEABLE);         ed = pre.edit();         int b = pre.getInt("progress", 0);           setContentView(R.layout.reads);         LinearLayout liner = (LinearLayout) findViewById(R.id.reader);         liner.addView(mPageWidget);         mMenu = (Mymenu) findViewById(R.id.men);         bar = (SeekBar) findViewById(R.id.seek);         bar.setProgress(b);         TextView size = (TextView) findViewById(R.id.textSize);         size.setOnClickListener(new OnClickListener() {               public void onClick(View arg0) {                 mMenu.setVisibility(View.GONE);                 bar.setVisibility(View.VISIBLE);               }         });         bar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {               @Override             public void onStopTrackingTouch(SeekBar ba) {                 ba.setMax(100);                 pagefactory.setTextSize(ba.getProgress() 10);                 pagefactory.onDraw(mCurPageCanvas);                 pagefactory.onDraw(mNextPageCanvas);                 mPageWidget.invalidate();                 ed.putInt("progress", ba.getProgress());                 ed.commit();               }               @Override             public void onStartTrackingTouch(SeekBar arg0) {               }               @Override             public void onProgreSSChanged(SeekBar arg0, int arg1, boolean arg2) {               }         });           // ----------------------------------------------           mCurPageBitmap = Bitmap.createBitmap(screenWidth, screenHeight,                 Bitmap.config.ARGB_8888);         mNextPageBitmap = Bitmap.createBitmap(screenWidth, screenHeight,                 Bitmap.Config.ARGB_8888);           mCurPageCanvas = new Canvas(mCurPageBitmap);         mNextPageCanvas = new Canvas(mNextPageBitmap);           pagefactory.setBgBitmap(BitmapFactory.decodeResource(                 this.getResources(), R.drawable.bg));           try {               Intent intent = getIntent();             File file = (File) intent.getSerializableExtra("way");             filepath = file;             pagefactory.openbook(filepath);             pagefactory.onDraw(mCurPageCanvas);         } catch (IOException e1) {             e1.printStackTrace();             Toast.makeText(this, "电子书不存在,请将test.txt放在SD卡根目录下",                     Toast.length_SHORT).show();         }           mPageWidget.setBitmaps(mCurPageBitmap, mCurPageBitmap);           mPageWidget.setOnTouchListener(new OnTouchListener() {             public boolean onTouch(View v, MotionEvent e) {                 boolean ret = false;                 if (v == mPageWidget) {                     if (e.getAction() == MotionEvent.ACTION_DOWN) {                         mPageWidget.calcCornerXY(e.getX(), e.getY());                           pagefactory.onDraw(mCurPageCanvas);                         if (mPageWidget.dragToRight()) {                             try {                                 pagefactory.prePage();                             } catch (IOException e1) {                                 e1.printStackTrace();                             }                             if (pagefactory.isFirstPage())                                 return false;                             mPageWidget.abortAnimation();                             pagefactory.onDraw(mNextPageCanvas);                         } else {                             try {                                 pagefactory.nextPage();                             } catch (IOException e1) {                                 e1.printStackTrace();                             }                             if (pagefactory.isLastPage())                                 return false;                             mPageWidget.abortAnimation();                             pagefactory.onDraw(mNextPageCanvas);                         }                         mPageWidget.setBitmaps(mCurPageBitmap, mNextPageBitmap);                     }                       ret = mPageWidget.doTouchEvent(e);                     return ret;                 }                 return false;             }         });     }       // ---------------------卢红伟增加---------------------     public void setBgBitmap() {         pagefactory.setBgBitmap(BitmapFactory.decodeResource(                 this.getResources(), R.drawable.cartoon_girls));         pagefactory.onDraw(mCurPageCanvas);         pagefactory.onDraw(mNextPageCanvas);         mPageWidget.invalidate();       }           // menu事件动画     public boolean onCreateOptionsMenu(Menu menu) {         menu.add("");         return super.onCreateOptionsMenu(menu);     }       public boolean onMenuOpened(int featureId, Menu menu) {           if (mMenu != null) {             if (mMenu.isShown()) {                 mMenu.setVisibility(View.GONE);                 mMenu.startAnimation(AnimationUtils.loadAnimation(this,                         R.anim.gone));             } else {                 mMenu.setVisibility(View.VISIBLE);                 mMenu.startAnimation(AnimationUtils.loadAnimation(this,                         R.anim.show));             }         }         return false;     }       // ----------------------------------------------------   }