android pdf

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Intent intent = new Intent();

//intent.addCategory("android.intent.category.DEFAULT");

intent.setAction(android.content.Intent.ACTION_VIEW);

Uri uri = Uri.fromFile(new File(param));

  intent.setDataAndType(uri, "application/pdf");

  //Intent intent2 = new Intent();
  //intent2.setAction(Intent.ACTION_CHOOSER);
  //intent2.putExtra(Intent.EXTRA_TITLE, "请选择能够打开pdf的应用");
  //intent2.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
  //intent2.putExtra(Intent.EXTRA_INTENT, intent);
  ComponentName componetName = new ComponentName(
                //这个是另外一个应用程序的包名
                "com.chaozh.iReaderFree",
                 //这个是要启动的Activity
                 "com.chaozh.iReader.ui.activity.WelcomeActivity");
          intent.setComponent(componetName);
          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         // startActivity(intent);

         System.out.println( android.os.Build.MODEL+"," + android.os.Build.VERSION.SDK + ","+ android.os.Build.VERSION.RELEASE);

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