今天讲阅读页，这作为嘎嘎读书系列的最后一篇文章吧，然后我会开始另外的项目分享，废话不说。先上截图。
还记得上篇文章最后的提醒么，大家必须先具备了自定义view的重绘等相关知识，才能做出阅读页。首先去百度下“android自定义view”这个关键词吧。我先来说下为什么要使用android的自定义view。
大家会发现譬如ireader 书旗等读书软件，都会有一个近似真实的翻页效果的阅读页，而android原生的view能够承接字体的比如textview，edit 都是不能够满足此效果的，这个时候，原生那些好用的view或者>p.measureText方法来测试一下，将200个字中前17个字拿出来，构成字符串，调用p.measureText(str) 如果返回值小于400 就测试18个字，18个字还小，就测试19个字，直到超过400停止，比如此时发现时20个字超过400，那么合适的字数就是19，那么将200个字的前19个字取出，将来放在第一行，剩下的字开始组装下一行的文字，依次循环，直到200个字都用光，我们就可以得到很多一行一样的文字。
接下来，我们就需要将这些分好的行文字分页，因为任何一篇正常的文章都不可能一屏将所有文字都显示完全，分页的规则很简单，类似于分行，只不过并不需要measure方法，譬如24号字，而手机屏幕可以绘制范围是720高，那么大概能承担720/24=30行文字，而事实上 如果我们真这么干，那么最后文字将会挤在一起没法阅读。因为我们忘了其实有个行距的概念，这个也是可以自己估计的，比如我们要单倍的行距，也就是说两行文字间相隔一行文字的距离，那么我们手机屏幕一屏可以绘制的行数就是720/48=15行左右，而根据不同手机，或者我们的审美感觉，可以自定义比较合适的行距来调节一屏可绘制行数。这个就看个人的喜好了。
最后我们讲准备好的15行文字封转到一个数据结构中，为绘制做准备，当onDraw被调用时，就在屏幕上对应的位置绘制出每行文字，一屏文字就绘制完毕，而且你会看到距离什么的都刚刚好，而如果还有剩余的文字，那么这些文字当然就成为下一页要绘制的文字，那么下一页只要仿照此页的做法，绘制文字，最终总会将所有文字绘制到屏幕上。而我们要的读书的效果就有了。
讲到这里，大家应该有一个初步概念，我们必须先将一个长文字按照画笔和屏幕的设置，分割成行以及页的数据结构，然后交由view来有序绘制。而将来我要用view显示任何一段文字，只要将这段文字传入view，view的工作就是先将文字分析，然后绘制。这样一个大概的流程就形成了。
下面先贴出来用来存储被分割后文字的数据结构：
1.一行文字的存储数据结构：
package com.prince.gagareader.bean;
public class StringRulerBean {
private int start;
private int end;
public int getStart() {
return start;
}
public void setStart(int start) {
this.start = start;
}
public int getEnd() {
return end;
}
public void setEnd(int end) {
this.end = end;
}
public StringRulerBean(int start, int end) {
super();
this.start = start;
this.end = end;
}
}
从上面可以看出，我这个数据结构中并没有记录具体的字符串，而是记录了这个行子串的开头和结尾在原串中的位置，这当然是考虑节约内存，因为一篇文章的文字时比较多的，而如果每个结构都存储一个子串，会给内存带来双倍的开销。
2.一页文字的存储数据结构：
package com.prince.gagareader.bean;
import java.util.ArrayList;
import java.util.List;
/**
* 每页数据的封装
* @author gagaprince
*
*/
public class PrepageBean {
/**
* 一页文字的开头结尾
*/
private StringRulerBean all;
/**
* 一页文字 每行的开头结尾
*/
private List
lines;
public StringRulerBean getAll() {
return all;
}
public void setAll(StringRulerBean all) {
this.all = all;
}
public List
getLines() {
return lines;
}
public void setLines(List
lines) {
this.lines = lines;
}
public PrepageBean(){
lines = new ArrayList
();
}
}
上面的代码中 使用了一个list来存储每行的数据，同时有一个StringRulerBean>
我特别气愤的是我写了两个小时的东西，竟然没有保存下来，我都点保存了，结果竟然！没了！还找不回来了！伤心！这个编辑器太坑了。nnd！算了 不写了，大家应该没有看到关于动画 帧 双缓冲的内容！因为点了发表文章之后发现！直接给我阉割掉了！nnd！气死我了！老子不写了！起码有一千字不见了！我灰常生气！下面贴出来源码大家自己看吧！我就当我写了.....顺便提醒下大家用这个csdn的编辑器 不要用那个直接往里面贴源码的那个功能！估计就是那个功能坑的爹啊！老老实实用代码片吧！编辑器！我去年买了个表！！！！
除此之外就是一些事件侦听的添加，以及和activity之间的交互等等。这里就略过不说了。我下面将整个阅读页需要用到的代码完整的贴在下方。有兴趣的同学可以捏着鼻子读一读。
xml文件：
Readview.java文件：
package com.prince.gagareader.view;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Paint.FontMetrics;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewTreeObserver;
import com.prince.gagareader.R;
import com.prince.gagareader.bean.ChapterBean;
import com.prince.gagareader.bean.PrepageBean;
import com.prince.gagareader.bean.StringRulerBean;
import com.prince.gagareader.util.SharedPreferencesUtil;
public class ReaderView extends View{
private Context context;
public boolean hasLoadData = false;
private int[] imgs={R.drawable.spring,R.drawable.nightstyle,R.drawable.sky,R.drawable.fenhong,R.drawable.yellow,R.drawable.yanpi,R.drawable.huyan,R.drawable.jiushu};
private Bitmap bgBitmap;
private Bitmap topBitmap; //翻页时上层图片
private Bitmap bottomBitmap; //翻页时下层图片
private Bitmap realBitmap; //正式绘制的图片
private Canvas topCanvas;
private Canvas bottomCanvas;
private Canvas realCanvas;
private Paint textPaint;
private Paint batterPaint;
private Paint titlePaint;
private int viewWidth;
private int viewHeight;
private boolean hasMeasured = false;
private boolean pageClock = false; //翻页动画锁
private boolean touchMoveClock=false;//手指滑动锁，在按下屏幕时解锁 在需要加载下一张时加锁 并停止move操作
private boolean loadDataClock = false; //加载数据锁，在加载数据时 不再触发 excuteNext pre方法 加载完毕后解锁
private int textSize =24;
private int marginTop = 25;
private int marginBottom=25;
private int marginLeft = 25;
private int marginRight = 15;
private int currentBegin=0;
private String textData="";
private ChapterBean currentChapter;
public static final int TRANSFORMLEFT=-1;
public static final int TRANSFORMINIT=0;
public static final int TRANSFORMRIGHT=1;
private float touchStartX=-1; //记录touchdown时手指位置
private float touchStartY=-1;
private int transFormDir = TRANSFORMINIT; //滑动翻页时
private List
needLoadDataListenners;
private OnLoadDataCompleteImpl onLoadDataComplete;
private int yuChapterCount=-1;
private float batterLevel=-1f;
private String chapterName;
private boolean drawing = false;
private OnMiddleClick middleClickListenner;
public ReaderView(Context context) {
super(context);
}
public ReaderView(Context context, AttributeSet attrs) {
super(context, attrs);
this.context = context;
initBean();
initTextPaint();
initPreDrawListenner();
}
private void initBean(){
needLoadDataListenners = new ArrayList
();
onLoadDataComplete = new OnLoadDataCompleteImpl();
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
textSize = su.getContextFontSize(context);
bgBitmap = BitmapFactory.decodeResource(this.getContext().getResources(), imgs[su.getContextBg(context)]);
}
private void initTextSize(){
if(textSize==-1){
textSize = viewWidth/20;
initTextPaint();
}
}
/**
* 更新背景
* @param bgindex
*/
public void updateBg(int bgindex){
bgBitmap = BitmapFactory.decodeResource(this.getContext().getResources(), imgs[bgindex]);
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
int currentIndex = su.getContextBg(context);
su.setContextBg(bgindex, context);
int color = Color.BLACK;
if(bgindex==1){
color = Color.rgb(90, 90, 90);
su.setContextLight(currentIndex, context);
}
textPaint.setColor(color);
batterPaint.setColor(color);
titlePaint.setColor(color);
preparedTextBitmap(topCanvas, currentBegin);
drawAllBitmap(0);
postInvalidate();
}
public int getJindu(){
return currentBegin+1;
}
public int getAllPage(){
int allPageSize = currentChapter.getPages().size();
return allPageSize;
}
public void setJindu(int despage){
if(despage==getAllPage()){
despage--;
}
if(despage
lines = page.getLines();
int lineHeight = getFontHeight();
for(int i=0;i
10){
if(currentBegin==0){
touchMoveClock = true;
excuteNeedPre();
return false;
}
transFormDir=TRANSFORMRIGHT;
preparedTextBitmap(topCanvas, currentBegin-1);
preparedTextBitmap(bottomCanvas, currentBegin);
}else if(moveX<-10){
if(currentBegin==currentChapter.getPages().size()-1){
touchMoveClock = true;
excuteNeedNext();
return false;
}
transFormDir=TRANSFORMLEFT;
preparedTextBitmap(topCanvas, currentBegin);
preparedTextBitmap(bottomCanvas, currentBegin+1);
}else{
return true;
}
}
if(moveX>0){
if(transFormDir==TRANSFORMLEFT){
drawAllBitmap(0);
}else{
drawAllBitmap((int)moveX-viewWidth);
}
}else{
if(transFormDir==TRANSFORMLEFT){
drawAllBitmap((int)moveX);
}else{
drawAllBitmap(-viewWidth);
}
}
return true;
case MotionEvent.ACTION_UP:
if(!pageClock){
stopDraw();
}
if(touchMoveClock){
return false;
}
float upX = event.getX();
if(transFormDir==TRANSFORMINIT){//只是点击 没有手动滑动操作翻页
if(upX
viewWidth-viewWidth/3){ goNextPage(-viewWidth/2,-1); }else{ // 点击屏幕中央 if(middleClickListenner!=null){ middleClickListenner.onClick(); } } }else{//由滑动操作就从此时坐标继续滑动操作 float upMoveX = upX-touchStartX; if(transFormDir==TRANSFORMLEFT){ if(upMoveX<0){ goNextPage((int)upMoveX,-1); } }else{ if(upMoveX>0){ goPrePage((int)upMoveX-viewWidth,-1); } } transFormDir = TRANSFORMINIT; } break; } return super.onTouchEvent(event); } /** * 下翻页 */ private void goNextPage(final int leftx,final int despage){ if(pageClock)return; if(currentBegin == currentChapter.getPages().size()-1){ excuteNeedNext(); return; } pageClock = true; //加锁 preparedTextBitmap(topCanvas, currentBegin); if(despage!=-1){ preparedTextBitmap(bottomCanvas, despage); }else{ preparedTextBitmap(bottomCanvas, currentBegin+1); } beginDraw(); new Thread(new Runnable() { int left=leftx; int v=15; public void run() { //left-=viewWidth/3; if(left<=50-viewWidth){ left=-viewWidth; } drawAllBitmap(left); while(left>-viewWidth){ try { Thread.sleep(1); } catch (InterruptedException e) { pageClock = false; e.printStackTrace(); } left-=v; v+=1; if(left<=-viewWidth){ left=-viewWidth; } drawAllBitmap(left); } if(despage!=-1){ currentBegin = despage; }else{ currentBegin++; } excuteNeedChangeBookMark(); pageClock = false; stopDraw(); } }).start(); } /** * 上翻页 */ private void goPrePage(final int leftx,final int despage){ if(pageClock)return; if(currentBegin ==0){ excuteNeedPre(); return; } pageClock = true; //加锁 if(despage!=-1){ preparedTextBitmap(topCanvas, despage); }else{ preparedTextBitmap(topCanvas, currentBegin-1); } preparedTextBitmap(bottomCanvas, currentBegin); beginDraw(); new Thread(new Runnable() { int left=leftx; int v=15; public void run() { //left+=viewWidth/2; if(left>=0){ left=0; } drawAllBitmap(left); while(left<0){ try { Thread.sleep(1); } catch (InterruptedException e) { pageClock = false; e.printStackTrace(); } left+=v; v+=1; if(left>=0){ left=0; } drawAllBitmap(left); } if(despage!=-1){ currentBegin=despage; }else{ currentBegin--; } excuteNeedChangeBookMark(); pageClock = false; stopDraw(); } }).start(); } public void excuteNeedReloadCurrent(){ if(loadDataClock)return; if(needLoadDataListenners!=null){ loadDataClock = true; int size = needLoadDataListenners.size(); for(int i=0;i
0){ hasLoadData = true; }else{ loadDataClock = false; } } } private void excuteNeedNext(){ if(loadDataClock)return; if(needLoadDataListenners!=null){ loadDataClock = true; preparedTextBitmap(topCanvas, currentBegin); int size = needLoadDataListenners.size(); for(int i=0;i
=0){ left=0; stopDraw(); } drawAllBitmap(left); while(left<0){ try { Thread.sleep(1); } catch (InterruptedException e) { pageClock = false; e.printStackTrace(); } left+=v; v+=1; if(left>=0){ left=0; } drawAllBitmap(left); } pageClock = false; stopDraw(); } }).start(); } @Override public void onError() { loadDataClock = false; } @Override public void onInitComplete() { goNext(); } private void goNext(){ reload(); loadDataClock = false; pageClock = true; preparedTextBitmap(bottomCanvas, currentBegin); beginDraw(); new Thread(new Runnable() { int left=0; int v=15; public void run() { //left-=viewWidth/2; if(left<=-viewWidth){ left=-viewWidth; stopDraw(); } drawAllBitmap(left); while(left>-viewWidth){ try { Thread.sleep(1); } catch (InterruptedException e) { pageClock = false; e.printStackTrace(); } left-=v; v+=1; if(left<=50-viewWidth){ left=-viewWidth; } drawAllBitmap(left); } pageClock = false; stopDraw(); } }).start(); } } public int getCurrentBegin() { return currentBegin; } public void setCurrentBegin(int currentBegin) { this.currentBegin = currentBegin; } public int getYuChapterCount() { return yuChapterCount; } public void setYuChapterCount(int yuChapterCount) { this.yuChapterCount = yuChapterCount; } public String getChapterName() { return chapterName; } public void setChapterName(String chapterName) { this.chapterName = chapterName; } private void batteryLevel() { BroadcastReceiver batteryLevelReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { context.unregisterReceiver(this); int rawlevel = intent.getIntExtra("level", -1);//获得当前电量 int scale = intent.getIntExtra("scale", -1); float level = -1; if (rawlevel >= 0 && scale > 0) { level = (float)rawlevel/ scale; batterLevel = level; } } }; IntentFilter batteryLevelFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED); context.registerReceiver(batteryLevelReceiver, batteryLevelFilter); } public void resizeFontSize(int fontsize){ textSize = fontsize; textPaint.setTextSize(textSize); int allpageCount = getAllPage(); int currentPage = currentBegin; reload(); int nowAllpageCount = getAllPage(); currentBegin = currentPage*nowAllpageCount/allpageCount; loadDataClock = false; excuteNeedChangeBookMark(); pageClock = true; preparedTextBitmap(bottomCanvas, currentBegin); beginDraw(); new Thread(new Runnable() { int left=0; int v=15; public void run() { //left-=viewWidth/2; if(left<=-viewWidth){ left=-viewWidth; stopDraw(); } drawAllBitmap(left); while(left>-viewWidth){ try { Thread.sleep(1); } catch (InterruptedException e) { pageClock = false; e.printStackTrace(); } left-=v; v+=1; if(left<=50-viewWidth){ left=-viewWidth; } drawAllBitmap(left); } pageClock = false; stopDraw(); } }).start(); } public interface OnMiddleClick{ public void onClick(); } public void setOnMiddleClick(OnMiddleClick middleClickListenner){ this.middleClickListenner = middleClickListenner; } }
activity文件：
package com.prince.gagareader;
import java.io.IOException;
import java.lang.reflect.Field;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.Settings;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import com.prince.gagareader.bean.BookBean;
import com.prince.gagareader.bean.BookMarkBean;
import com.prince.gagareader.bean.ContentBean;
import com.prince.gagareader.util.DateProvider;
import com.prince.gagareader.util.NovelUtil;
import com.prince.gagareader.util.SharedPreferencesUtil;
import com.prince.gagareader.view.ReaderView;
import com.prince.gagareader.view.ReaderView.NeedLoadDataListenner;
import com.prince.gagareader.view.ReaderView.OnMiddleClick;
import com.prince.gagareader.view.ReaderView.OnloadDataComplete;
import com.umeng.analytics.MobclickAgent;
import dalvik.system.TemporaryDirectory;
public class ReaderActivity extends Activity {
private ReaderView readerView;
private Handler handler;
private String nid;
private BookBean bookBean;
private BookMarkBean bookMark;
private LinearLayout dengLinear;
private LinearLayout bottemButtonLinear;
private LinearLayout muluButtonLinear;
private LinearLayout bgiconLinear;
private LinearLayout bgbuttonLinear;
private LinearLayout lightseekBarLinear;
private LinearLayout lightbuttonlinear;
private SeekBar lightSeekBar;
private LinearLayout jinduseekBarLinear;
private SeekBar jinduSeekBar;
private LinearLayout jinduButtonLinear;
private SeekBar fontsizeSeekBar;
private LinearLayout fontsizeButtonLinear;
private LinearLayout fontsizeBarLinear;
private LinearLayout nightlinear;
private RelativeLayout allView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.reader);
initView();
initHandler();
initData();
addListenner();
beginReader();
}
private void initData(){
Intent intent=getIntent();
nid = intent.getStringExtra("nid");
if(nid==null)nid="0dbe15224f0324a86d527972466e3adc";
//先从书架初始化，在从网络初始化
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
bookBean = su.getBookBeanByNid(nid, this);
if(bookBean==null){
handler.postDelayed(new Runnable() {
@Override
public void run() {
try {
bookBean = DateProvider.getInstance().getBookBeanByNid(nid);
sendMsgBean(1);
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
},20);
}else{
sendMsgBean(1);
}
}
private void initHandler(){
handler = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 1://数据加载完成 显示
preparedPage();
break;
case 2:
break;
default:
break;
}
}
};
}
private void preparedPage(){
Intent intent=getIntent();
String currentChapterStr = intent.getStringExtra("currentChapter");
if(bookBean!=null){
bookBean.setOnline(false);
}
if(currentChapterStr!=null){
int currentChapter = Integer.parseInt(currentChapterStr);
if(bookBean!=null){
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
int currentChapterDB = bookBean.getCurrentCount();
if(currentChapter==currentChapterDB){
bookMark = su.getBookMarkByNid(nid, this);
if (bookMark==null) {
bookMark = new BookMarkBean(1, 0);
}
su.addBookBean(bookBean, this);
}else{
bookMark = new BookMarkBean(currentChapter, 0);
bookBean.setCurrentCount(currentChapter);
su.addBookBeanIfExist(bookBean, this);
su.setBookMark(nid, currentChapter, 0, this);
}
}
}else{
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
su.addBookBean(bookBean, this);
bookMark = su.getBookMarkByNid(nid, this);
if (bookMark==null) {
bookMark = new BookMarkBean(1, 0);
}
}
readerView.addNeedLoadDataListenner(new MyNeedLoadData());
if(!readerView.hasLoadData){
readerView.excuteNeedReloadCurrent();
}
}
private void initView(){
readerView = (ReaderView) findViewById(R.id.myReaderView);
dengLinear = (LinearLayout) findViewById(R.id.dengshengLinear);
bottemButtonLinear = (LinearLayout)findViewById(R.id.buttonBottemLinear);
muluButtonLinear = (LinearLayout)findViewById(R.id.muluButtonLinear);
bgiconLinear = (LinearLayout)findViewById(R.id.bgiconLinear);
bgbuttonLinear = (LinearLayout)findViewById(R.id.bgbuttonLinear);
lightseekBarLinear = (LinearLayout)findViewById(R.id.lightseekBarLinear);
lightbuttonlinear = (LinearLayout)findViewById(R.id.lightbuttonlinear);
lightSeekBar = (SeekBar)findViewById(R.id.lightseekBar);
jinduseekBarLinear = (LinearLayout)findViewById(R.id.jinduseekBarLinear);
jinduSeekBar = (SeekBar)findViewById(R.id.jinduseekBar);
jinduButtonLinear = (LinearLayout)findViewById(R.id.jinduButtonLinear);
fontsizeBarLinear = (LinearLayout)findViewById(R.id.fontsizeseekBarLinear);
fontsizeSeekBar = (SeekBar)findViewById(R.id.fontsizeseekBar);
fontsizeButtonLinear = (LinearLayout)findViewById(R.id.fontsizeButtonLinear);
nightlinear = (LinearLayout)findViewById(R.id.nightlinear);
allView = (RelativeLayout)findViewById(R.id.allView);
}
private void addListenner(){
readerView.setOnMiddleClick(new OnMiddleClick() {
@Override
public void onClick() {
if(dengLinear.getVisibility()==View.INVISIBLE){
showCtrl();
}else{
hideCtrl();
}
}
});
muluButtonLinear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(ReaderActivity.this,
MuluActivity.class);
String nid = bookBean.getNid();
String name = bookBean.getNovelName();
intent.putExtra("nid", nid);
intent.putExtra("cid", bookBean.getCurrentCount());
intent.putExtra("novelName", name);
intent.putExtra("isreading", true);
startActivityForResult(intent, 0);
hideCtrl();
}
});
bgbuttonLinear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
bottemButtonLinear.setVisibility(View.INVISIBLE);
bgiconLinear.setVisibility(View.VISIBLE);
}
});
lightbuttonlinear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
bottemButtonLinear.setVisibility(View.INVISIBLE);
lightSeekBar.setMax(255);
int normal = Settings.System.getInt(getContentResolver(),
Settings.System.SCREEN_BRIGHTNESS, 255);
lightSeekBar.setProgress(normal);
bottemButtonLinear.setVisibility(View.INVISIBLE);
lightseekBarLinear.setVisibility(View.VISIBLE);
}
});
jinduButtonLinear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int allPageSize = readerView.getAllPage();
jinduSeekBar.setMax(allPageSize);
int jindu = readerView.getJindu();
jinduSeekBar.setProgress(jindu);
bottemButtonLinear.setVisibility(View.INVISIBLE);
jinduseekBarLinear.setVisibility(View.VISIBLE);
}
});
fontsizeButtonLinear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
int fontsize = su.getContextFontSize(ReaderActivity.this);
fontsizeSeekBar.setMax(20);
fontsizeSeekBar.setProgress(fontsize-10);
bottemButtonLinear.setVisibility(View.INVISIBLE);
fontsizeBarLinear.setVisibility(View.VISIBLE);
}
});
LinearLayout linearTemp = (LinearLayout)findViewById(R.id.topbgiconLinear);
int childsize = linearTemp.getChildCount();
for(int i=0;i
0 && tmpFloat <= 1) {
wl.screenBrightness = tmpFloat;
}
getWindow().setAttributes(wl);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {}
});
jinduSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
int tmpInt = seekBar.getProgress();
readerView.setJindu(tmpInt);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {}
});
fontsizeSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
int tmpInt = seekBar.getProgress();
int fontsize = tmpInt+10;
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
int currentSize = su.getContextFontSize(ReaderActivity.this);
if(currentSize!=fontsize){
su.setContextFontSize(fontsize, ReaderActivity.this);
readerView.resizeFontSize(fontsize);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {}
});
dengLinear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
excuteNightButton();
}
});
nightlinear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
excuteNightButton();
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data){
if(requestCode==0&&resultCode==RESULT_OK){
int cid = Integer.parseInt(data.getStringExtra("currentChapter"));
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
int currentChapterDB = bookBean.getCurrentCount();
if(cid!=currentChapterDB){
bookMark = new BookMarkBean(cid, 0);
bookBean.setCurrentCount(cid);
su.addBookBeanIfExist(bookBean, this);
su.setBookMark(nid, cid, 0, this);
readerView.excuteNeedReloadCurrent();
hideCtrl();
}
}
super.onActivityResult(requestCode,resultCode, data);
}
private void excuteNightButton(){
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
int currentBg = su.getContextBg(ReaderActivity.this);
if(currentBg==1){
int newBg = su.getContextLight(ReaderActivity.this);
readerView.updateBg(newBg);
}else{
readerView.updateBg(1);
}
hideCtrl();
}
/**
* 显示控制面板
*/
private void showCtrl(){
quitFullScreen();
allView.setPadding(0, -getStatusBarHeight(this), 0, 0);
dengLinear.setVisibility(View.VISIBLE);
bottemButtonLinear.setVisibility(View.VISIBLE);
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
int currentBg = su.getContextBg(this);
ImageView nightimg = (ImageView)findViewById(R.id.nightimg);
TextView nighttv = (TextView)findViewById(R.id.nighttv);
if(currentBg==1){
nightimg.setBackgroundResource(R.drawable.dayicon);
nighttv.setText("白天");
}else{
nightimg.setBackgroundResource(R.drawable.nighticon);
nighttv.setText("黑夜");
}
}
/**
* 隐藏控制面板
*/
private void hideCtrl(){
setFullScreen();
allView.setPadding(0, 0, 0, 0);
dengLinear.setVisibility(View.INVISIBLE);
bottemButtonLinear.setVisibility(View.INVISIBLE);
bgiconLinear.setVisibility(View.INVISIBLE);
lightseekBarLinear.setVisibility(View.INVISIBLE);
jinduseekBarLinear.setVisibility(View.INVISIBLE);
fontsizeBarLinear.setVisibility(View.INVISIBLE);
}
private void beginReader(){
/*handler.post(new Runnable() {
@Override
public void run() {
try {
String content = getContentBycid(""+chapter);
readerView.setTextData(content);
readerView.initData();
} catch (IOException e) {
//网络异常
e.printStackTrace();
} catch (JSONException e) {
//解析出错
e.printStackTrace();
}
}
});*/
}
private void sendMsgBean(int msgWhat){
Message message = new Message();
message.what = msgWhat;
handler.sendMessage(message);
}
private ContentBean getContentBycid(String cid) throws IOException, JSONException{
if(bookBean!=null){
String nid = bookBean.getNid();
String novelContent = NovelUtil.getInstance().preparedNovelByNidCid(nid, cid);
JSONObject textJson = new JSONObject(novelContent).getJSONObject("result");
String content = " "+textJson.getString("content").trim().replaceAll("B#R", "\n ");
String title = textJson.getString("ctitle");
return new ContentBean(content, title);
}
return null;
}
class MyNeedLoadData implements NeedLoadDataListenner{
@Override
public void needNext(final OnloadDataComplete call) {
if(bookBean!=null){
int allChapterCount = bookBean.getAllChapterCount();
final int currentChapter = bookBean.getCurrentCount();
if(currentChapter
1){
bookBean.setCurrentCount(currentChapter-1);
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
su.addBookBeanIfExist(bookBean, ReaderActivity.this);
preparedReaderData(call, currentChapter-1,0);
}
}
}
@Override
public void reloadCurrent(OnloadDataComplete call) {
Log.e("reload",bookMark+"");
if(bookBean!=null&&bookMark!=null){
final int currentChapter = bookBean.getCurrentCount();
Log.e("reloadcurrent", bookMark.getCurrentPage()+"");
readerView.setCurrentBegin(bookMark.getCurrentPage());
preparedReaderData(call, currentChapter,2);
}
}
@Override
public void needChangeBookMark(int currentBegin) {
bookMark.setCurrentCount(bookBean.getCurrentCount());
bookMark.setCurrentPage(currentBegin);
Log.e("changeBookMark", currentBegin+"");
SharedPreferencesUtil.getInstance().setBookMark(nid, bookMark, ReaderActivity.this);
}
}
private void preparedReaderData(final OnloadDataComplete call,final int currentChapter,final int flag){
handler.post(new Runnable() {
@Override
public void run() {
ContentBean contentBean;
try {
contentBean = getContentBycid(""+currentChapter);
readerView.setTextData(contentBean.getContent());
readerView.setChapterName(contentBean.getTitle());
readerView.setYuChapterCount(bookBean.getAllChapterCount()-currentChapter);
if(flag==1){
call.onNextComplete();
}else if(flag==2){
call.onInitComplete();
}else{
call.onPreComplete();
}
} catch (IOException e) {
call.onError();
e.printStackTrace();
} catch (JSONException e) {
call.onError();
e.printStackTrace();
}
}
});
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if(event.getKeyCode()==KeyEvent.KEYCODE_BACK&& event.getAction() == KeyEvent.ACTION_DOWN){
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
if(!su.isBookExist(bookBean, this)){
showIsAddDialog();
}else{
ReaderActivity.this.finish();
}
return true;
}
return super.dispatchKeyEvent(event);
}
/**
* 显示退出提示
*/
private void showIsAddDialog(){
new AlertDialog.Builder(ReaderActivity.this)
.setTitle("温馨提示")
.setMessage("是否将此书加入书架，方便以后阅读")
.setPositiveButton("加入书架",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
SharedPreferencesUtil su = SharedPreferencesUtil.getInstance();
su.addBookBean(bookBean, ReaderActivity.this);
ReaderActivity.this.finish();
}
})
.setNegativeButton("取消",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
ReaderActivity.this.finish();
}
}).create().show();
}
private void setFullScreen()
{
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
//[代码] 退出全屏函数：
private void quitFullScreen()
{
final WindowManager.LayoutParams attrs = getWindow().getAttributes();
attrs.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setAttributes(attrs);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
}
public static int getStatusBarHeight(Context context){
Class
c = null;
Object obj = null;
Field field = null;
int x = 0,
statusBarHeight = 0;
try{
c= Class.forName("com.android.internal.R$dimen");
obj= c.newInstance();
field= c.getField("status_bar_height");
x= Integer.parseInt(field.get(obj).toString());
statusBarHeight= context.getResources().getDimensionPixelSize(x);
}catch(Exception e1) {
e1.printStackTrace();
}
return statusBarHeight;
}
public void onResume() {
super.onResume();
MobclickAgent.onResume(this);
}
public void onPause() {
super.onPause();
MobclickAgent.onPause(this);
}
}
到此为止，整个项目就算我得不得完了。简单总结下项目中需要用到的知识点：文件读写，线程，url请求，自定义view ，SharedPreferences，listview，gridview，android的service...等等吧。欢迎大家下载试用，并给我提好的建议。下载地址在第一篇文章中。
虽然我知道我该说的可能没说到，不该说的有点啰嗦，但毕竟这是我第一次分享，还是请见谅啦！而且最主要的是记录下我的实践经历，同时给需要帮助的人一点点提示。我并不认为我写的代码多么的好，所以你既不用恭维也不用讽刺，相信未来我的代码世界会越来越丰富，希望大家一起努力。而我近期也会分享另一个项目。是一个音乐电台的应用。如果说电子书是享受眼睛的，那么下一个电台应用就是给耳朵用的。敬请期待！
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
