应用程序加载从RES /生/ PDF文件的PDF文件

问题描述

HI我尝试加载从原始文件夹中的文件APDF但是当我preSS的插嘴没有发生，请帮我与
。这是code

HI im trying to load apdf file from the raw folder but when i press the buttin nothing happen please help me with that. This is the code

公共类openpdf扩展活动
{

public class openpdf extends Activity{

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Button button = (Button) findViewById(R.id.pdfbutton);
    button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v)
            {

                File pdfFile = new File(
                    "android.resource://com.mycompany.myapp.PDF/"
                    + R.raw.adham);
                Uri path = Uri.fromFile(pdfFile);
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                intent.setDataAndType(path, "application/pdf");

                startActivity(intent);
            }
        }
    );
}

}

推荐答案

下面是示例：

package fortyonepost.com.lfas;//Created by DimasTheDriver Apr/2011.

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import android.app.Activity;
import android.content.res.Resources;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

public class LoadFromAltLoc extends Activity {

    //a handle to the application's resources
    private Resources resources;
    //a string to output the contents of the files to LogCat
    private String output;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        //get the application's resources
        resources = getResources();

        try
        {
            //Load the file from the raw folder - don't forget to OMIT the extension
            output = LoadFile("from_raw_folder", true);
            //output to LogCat
            Log.i("test", output);
        }
        catch (IOException e)
        {
            //display an error toast message
            Toast toast = Toast.makeText(this, "File: not found!", Toast.LENGTH_LONG);
            toast.show();
        }

        try
        {
            //Load the file from assets folder - don't forget to INCLUDE the extension
            output = LoadFile("from_assets_folder.pdf", false);
            //output to LogCat
            Log.i("test", output);
        }
        catch (IOException e)
        {
            //display an error toast message
            Toast toast = Toast.makeText(this, "File: not found!", Toast.LENGTH_LONG);
            toast.show();
        }
    }

    //load file from apps res/raw folder or Assets folder
    public String LoadFile(String fileName, boolean loadFromRawFolder) throws IOException
    {
        //Create a InputStream to read the file into
        InputStream iS;

        if (loadFromRawFolder)
        {
            //get the resource id from the file name
            int rID = resources.getIdentifier("fortyonepost.com.lfas:raw/"+fileName, null, null);
            //get the file as a stream
            iS = resources.openRawResource(rID);
        }
        else
        {
            //get the file as a stream
            iS = resources.getAssets().open(fileName);
        }

        //create a buffer that has the same size as the InputStream
        byte[] buffer = new byte[iS.available()];
        //read the text file as a stream, into the buffer
        iS.read(buffer);
        //create a output stream to write the buffer into
        ByteArrayOutputStream oS = new ByteArrayOutputStream();
        //write this buffer to the output stream
        oS.write(buffer);
        //Close the Input and Output streams
        oS.close();
        iS.close();

        //return the output stream as a String
        return oS.toString();
    }
}

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