从一个内置apk中打开内置的pdf文档

package com.test.android;






import java.io.File;


import android.app.Activity;
import android.content.Intent;


import android.net.Uri;
import android.os.Bundle;


public class Test_AndroidActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
   
        Intent intent = new Intent("android.intent.action.VIEW");     
        intent.addCategory("android.intent.category.DEFAULT");     
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);     


        Uri uri = Uri.fromFile(new File("/system/userhelp.pdf"));


        intent.setDataAndType(uri, "application/pdf"); 
        startActivity(intent);
        this.finish();
    }


    


   
}