Question

我正在开发一个应用程序，我希望通过垂直滚动实现PDF视图功能，请指导任何可以在查看PDF时实现垂直滚动的免费第三方库。

先谢谢

Answer 1

第1步：首先将jar PdfViewer.jar 从https://github.com/jblough/Android-Pdf-Viewer-Library添加到 libs 文件夹，然后右键单击它构建路径 - ＆gt;点击“添加到构建路径”

第2步：将以下可绘制文件夹从PdfViewer / res / drawable复制到 res 文件夹到YourProject / res / drawable

要复制的文件是

1＆GT; back01.png
  2.＆GT; back02.png
  3.＆GT; doc.png
  4.＆GT; folder.png
  5.＆GT; icon.png
  6.＆GT; left_arrow.png
  7.＆GT; pdf.png
  8.＆GT; right_arrow.png
  9.＆GT; zoom_in.png
  10.＆GT; zoom_out.png

但请确保复制res文件夹中的drawable文件夹。

第3步：将以下布局资源从PdfViewer / res / layout复制到 res＆gt;布局文件夹到YourProject / res / layout

要复制的文件是

1＆GT; dialog_pagenumber.xml
  2.＆GT; graphics_view.xml
  3.＆GT; navigation_overlay.xml
  4.＆GT; pdf_file_password.xml
  5.＆GT; scroll_layout.xml

第4步：从net.sf.andpdf.pdfviewer.PdfViewerActivity中导出您的PDF活动，如下所示

package com.example.viewsdcardpdfs;

import android.os.Bundle;
import net.sf.andpdf.pdfviewer.PdfViewerActivity;

public class mypdfactivity extends PdfViewerActivity{
 @Override
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
    }

    public int getPreviousPageImageResource() {
        return R.drawable.left_arrow;
    }

    public int getNextPageImageResource() {
        return R.drawable.right_arrow;
    }

    public int getZoomInImageResource() {
        return R.drawable.zoom_in;
    }

    public int getZoomOutImageResource() {
        return R.drawable.zoom_out;
    }

    public int getPdfPasswordLayoutResource() {
        return R.layout.pdf_file_password;
    }

    public int getPdfPageNumberResource() {
        return R.layout.dialog_pagenumber;
    }

    public int getPdfPasswordEditField() {
        return R.id.etPassword;
    }

    public int getPdfPasswordOkButton() {
        return R.id.btOK;
    }

    public int getPdfPasswordExitButton() {
        return R.id.btExit;
    }

    public int getPdfPageNumberEditField() {
        return R.id.pagenum_edit;
    }
 }

第5步：在您的 MainActivity 电话中，如下所示

package com.example.viewsdcardpdfs;

import java.io.File;
import java.io.FilenameFilter;

import net.sf.andpdf.pdfviewer.PdfViewerActivity;

import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends ListActivity {

String[] pdflist;
File[] imagelist;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //setContentView(R.layout.activity_main);

    File images = Environment.getExternalStorageDirectory();
    imagelist = images.listFiles(new FilenameFilter() {
        public boolean accept(File dir, String name) {
            return ((name.endsWith(".pdf")));
        }
    });
    pdflist = new String[imagelist.length];
    for (int i = 0; i < imagelist.length; i++) {
        pdflist[i] = imagelist[i].getName();
    }
    this.setListAdapter(new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, pdflist));
}

 protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        String path = imagelist[(int) id].getAbsolutePath();
        openPdfIntent(path);
    }

 private void openPdfIntent(String path) {
        try {
            final Intent intent = new Intent(MainActivity.this, mypdfactivity.class);
            intent.putExtra(PdfViewerActivity.EXTRA_PDFFILENAME, path);
            startActivity(intent);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

}

第6步：在您的AndroidManifest.xml中

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.viewsdcardpdfs"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="18" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.viewsdcardpdfs.MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name="com.example.viewsdcardpdfs.mypdfactivity">
    </activity>
</application>

</manifest>

第7步：运行代码

Answer 2

执行以下操作.swipeVertical(true)添加如下所示的行

 pdfView.fromAsset(SAMPLE_FILE)
               // .pages(0, 2, 1, 3, 3, 3)
                .defaultPage(1)
                .showMinimap(false)
                .enableSwipe(true)
                .swipeVertical(true)
                //.onDraw(onDrawListener)
                .onLoad(this)
                .onPageChange(this)
                .load();

如何使用第三方库读取垂直滚动的pdf。

2 个答案: