我已经通过epub api和几乎所有关于此的stackoverflow链接但无法显示epub书的图像。我在allRef: allRef = book.getResources().getAllHrefs();
但我不知道如何显示它们，用html渲染它们。我是一个初学者，如果这个问题重复，请原谅我，但我已经阅读了有关它的所有链接，没有一个对我有用。 任何建议都会非常有用.. 这是代码。
// mainactivity
public class MainActivity extends Activity implements OnTouchListener{
private WebView webview;
private String line, line1="", finalstr="";
int i = 0;
private String fullBook;
private Book book;
private TextView tv;
private static int width = 0;
private static int height =0;
//Touch attributes
StringBuffer sb = new StringBuffer();
private float pressure = 0.0f;
private float xCoord = 0;
private float yCoord = 0;
private int pCount = 0; //pointerCount
int position = 0;
Collection<String> allRef;
private LinearLayout mainLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webview = (WebView) findViewById(R.id.webview);
webview.setWebChromeClient(new WebChromeClient());
WebSettings webSettings = webview.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setBuiltInZoomControls(true);
AssetManager assetManager = getAssets();
String[] files;
try{
//find input Stream for book
InputStream epubInputStream = assetManager.open("TheThreeBears.epub");
//Load book from input stream
book = (new EpubReader()).readEpub(epubInputStream);
allRef = book.getResources().getAllHrefs();
Log.i("IMAGETAG",allRef.toString()); //IMAGES ARE PRESENT HERE
Log.i("epublib", "title: "+book.getTitle());
log("Hello Three Bears");
DownloadResource("file:///android_asset/");
//Log the tables of contents
logTableOfContents(book.getTableOfContents().getTocReferences(),0);
getEntireBook();
}
catch(Exception e){
Log.e("epublib", e.getMessage());
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
//width = v.getWidth();
//height = v.getHeight();
//Log.i("WIDTH", width+"");
//Log.i("HEIGHT", height+"");
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
Toast.makeText(getApplicationContext(), "Touch Down x="+x+" y="+y ,Toast.LENGTH_SHORT).show();
//Handle Touch Down
break;
case MotionEvent.ACTION_MOVE:
//Handle Touch Move
break;
case MotionEvent.ACTION_UP:
Toast.makeText(getApplicationContext(), "Touch Up x="+x+" y="+y ,Toast.LENGTH_SHORT).show();
//Handle Touch Up
break;
}
return false;
}
private void logTableOfContents(List<TOCReference> tocReferences, int depth){
// Load entire text into particular no. of lines and display each
// then with next button navigate through pages
if(tocReferences == null){
System.out.println("---->>>"+tocReferences);
return ;
}
for(TOCReference tocReference:tocReferences){
StringBuilder tocString = new StringBuilder();
for(int i=0;i<depth;i++){
tocString.append("\t");
}
tocString.append(tocReference.getTitle());
try {
InputStream is = tocReference.getResource().getInputStream();
BufferedReader r = new BufferedReader(new InputStreamReader(is));
while ((line = r.readLine()) != null) {
line1 = line1.concat(Html.fromHtml(line).toString());
}
finalstr = finalstr.concat("\n").concat(line1);
i++;
} catch (IOException e) {
e.printStackTrace();
}
logTableOfContents(tocReference.getChildren(), depth+1);
}
webview.loadDataWithBaseURL("file:///android_asset/", finalstr, "text/html", "UTF-8", null);
//webview.loadDataWithBaseURL("file://"+Environment.getExternalStorageDirectory()+"/books/", finalstr, "text/html", "utf-8", null);
//webview.loadDataWithBaseURL("", finalstr, "text/html", "UTF-8", "");
}
public void getEntireBook(){
String line, linez = null;
Spine spine = book.getSpine();
Resource res;
List<SpineReference> spineList = spine.getSpineReferences() ;
int count = spineList.size();
int start = 0;
StringBuilder string = new StringBuilder();
for (int i = start; count > i; i = i +1) {
res = spine.getResource(i);
try {
InputStream is = res.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
try {
while ((line = reader.readLine()) != null) {
linez = string.append(line + "\n").toString();
}
} catch (IOException e) {e.printStackTrace();}
} catch (IOException e) {
e.printStackTrace();
}
}
webview.loadData(linez, "text/html", "utf-8");
}
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
return false;
}
}