[英]navigating to a specific page with the mupdf android library
如何使用muPDF庫導航到特定頁面? 還是有一種方法可以使圖書館不記得我在那個pdf的最后一頁上?
Uri uri = Uri.parse(path);
Intent intent = new Intent(MainActivity.getContext(), MuPDFActivity.class)
intent.setAction(Intent.ACTION_VIEW);
intent.setData(uri);
c.startActivity(intent);
//c is context
這就是我目前打開pdf的方式。
您可以將Bundle中的頁面索引添加到您的意圖中,然后在MuPDFActivity中加載該索引,然后調用mDocView.setDisplayedViewIndex(your_index_from_bundle); 那應該做的。
像這樣:
Uri uri = Uri.parse(path);
Intent intent = new Intent(MainActivity.getContext(), MuPDFActivity.class)
intent.setAction(Intent.ACTION_VIEW);
intent.setData(uri);
Bundle extras = intent.getExtras();
extras.putInt("key_page_index", 10);
c.startActivity(intent);
然后在MuPDFActivity中編輯onCreate,在onCreate的末尾添加以下代碼:
Intent intent = getIntent();
if(intent!=null){
Bundle extras = intent.getExtras();
if(extras!=null){
int index = extras.getInt("key_page_index");
mDocView.setDisplayedViewIndex(index);
}
}
package com.artifex.mupdf;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Point;
import android.util.Log;
public class MuPDFPageView extends PageView {
private final MuPDFCore mCore;
public MuPDFPageView(Context c, MuPDFCore core, Point parentSize) {
super(c, parentSize);
mCore = core;
}
public String hitLinkPage(float x, float y) {
// Since link highlighting was implemented, the super class
// PageView has had sufficient information to be able to
// perform this method directly. Making that change would
// make MuPDFCore.hitLinkPage superfluous.
float scale = mSourceScale * getWidth() / mSize.x ;
float docRelX = (x - getLeft()) / scale;
float docRelY = (y - getTop()) / scale;
Log.d("Page Number", "hitLinkPage with page = " + mCore.hitLinkPage(mPageNumber, docRelX, docRelY));
return mCore.hitLinkPage(mPageNumber, docRelX, docRelY);
}
@Override
protected void drawPage(Bitmap bm, int sizeX, int sizeY, int patchX,
int patchY, int patchWidth, int patchHeight) {
mCore.drawPage(mPageNumber, bm, sizeX, sizeY, patchX, patchY,
patchWidth, patchHeight);
}
@Override
protected LinkInfo[] getLinkInfo() {
return mCore.getPageLinks(mPageNumber);
}
}
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