I'm trying to create a pdf opener on my android emulator (2.3.3), however it is returning an Activitynotfound exception every time i run it. I've checked the package name and the class name and it is correct. I am also quite new in Android development. Here are the codes!

public class PdfViewerActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    TextView tv = new TextView(this);


    File file = new File("mnt/sdcard/proposal.pdf");
    Intent intent = new Intent(Intent.ACTION_VIEW);
    Uri path2 = Uri.fromFile(file);
    intent.setDataAndType(path2, "application/pdf");    

    try 
    { 
         startActivity(intent);
    } 
    catch(ActivityNotFoundException e ) 
    { 
        tv.setText("What the hell is going on O_O" +开发者_运维问答 "\n" + e);
        setContentView(tv);  
    } 


}

}

==========

Manifest

<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".PdfViewerActivity"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

</application>

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Thereis no PDF viewer application installed on your phone. That's why the start activity code here is failing. What exactly do you mean by a PDF opener?

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When you launch the intent for ACTION_VIEW, do you have an activity that "catches" it?

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You are using emulator for read PDf and the way you are reading PDF is Intent.ACTION_VIEW for that you need one Pdf reading application install in your emulator.

If you want to read Pdf there is some other way you can read

Android - Load PDF / PDF Viewer

Also you can make your own PDF Viewer