how can i pass this intent data into Android correctly

Activity 2

         public class Menus extends Activity {
//set constants for MediaStore to query, and show videos
private final static Uri MEDIA_EXTERNAL_CONTENT_URI = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
private final static String _ID = MediaStore.Video.Media._ID;
private final static String MEDIA_DATA = MediaStore.Video.Media.DATA;
//flag for which one is used for images selection
private GridView _gallery; 
private Cursor _cursor;
private int _columnIndex;
private int[] _videosId;
private Uri _contentUri;


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

    _context = getApplicationContext();
    _gallery = (GridView) findViewById(R.id.videoGrdVw);
    //set default as external/sdcard uri
    _contentUri = MEDIA_EXTERNAL_CONTENT_URI;
    //initialize the videos uri 
    //showToast(_contentUri.getPath());
    initVideosId();
    //set gallery adapter
    setGalleryAdapter();
}
private void setGalleryAdapter() {
    _gallery.setAdapter(new VideoGalleryAdapter(_context));
    _gallery.setOnItemClickListener(_itemClickLis);

}
private AdapterView.OnItemClickListener _itemClickLis = new OnItemClickListener() 
{
    public void onItemClick(AdapterView<?> parent, View v, int position, long id) 
    {
        // Now we want to actually get the data location of the file
        String [] proj={MEDIA_DATA};
        // We request our cursor again
        _cursor = managedQuery(_contentUri,
                proj, // Which columns to return
                null,       // WHERE clause; which rows to return (all rows)
                null,       // WHERE clause selection arguments (none)
                null); // Order-by clause (ascending by name)
        // We want to get the column index for the data uri
        int count = _cursor.getCount();
        //
        _cursor.moveToFirst();
        //
        _columnIndex = _cursor.getColumnIndex(MEDIA_DATA);
        // Lets move to the selected item in the cursor
     开发者_StackOverflow中文版   _cursor.moveToPosition(position);

        Intent data = new Intent(getBaseContext(), Editor.class); data.putExtra("mnt/sdcard-ext", _ID); startActivity(data);
    }
};
private void initVideosId() {
    try
    {
        //Here we set up a string array of the thumbnail ID column we want to get back
        String [] proj={_ID};
        // Now we create the cursor pointing to the external thumbnail store
        _cursor = managedQuery(_contentUri,
                proj, // Which columns to return
                null,       // WHERE clause; which rows to return (all rows)
                null,       // WHERE clause selection arguments (none)
                null); // Order-by clause (ascending by name)
        int count= _cursor.getCount();
        // We now get the column index of the thumbnail id
        _columnIndex = _cursor.getColumnIndex(_ID);
        //initialize 
        _videosId = new int[count];
        //move position to first element
        _cursor.moveToFirst();          
        for(int i=0;i<count;i++)
        {           
            int id = _cursor.getInt(_columnIndex);
            //
            _videosId[i]= id;
            //
            _cursor.moveToNext();
            //
        }
    }catch(Exception ex)
    {

    }

}


//
private class VideoGalleryAdapter extends BaseAdapter
{
    public VideoGalleryAdapter(Context c) 
    {
        _context = c;
    }
    public int getCount() 
    {
        return _videosId.length;
    }
    public Object getItem(int position) 
    {
        return position;
    }
    public long getItemId(int position) 
    {
        return position;
    }
    public View getView(int position, View convertView, ViewGroup parent) 
    {
        ImageView imgVw= new ImageView(_context);;
        try
        {
            if(convertView!=null)
            {
                imgVw= (ImageView) convertView;
            }
            imgVw.setImageBitmap(getImage(_videosId[position]));
            imgVw.setLayoutParams(new GridView.LayoutParams(96, 96));
            imgVw.setPadding(8, 8, 8, 8);
        }
        catch(Exception ex)
        {
            System.out.println("StartActivity:getView()-135: ex " + ex.getClass() +", "+ ex.getMessage());
        }
        return imgVw;
    }

    // Create the thumbnail on the fly
    private Bitmap getImage(int id) {
        Bitmap thumb = MediaStore.Video.Thumbnails.getThumbnail(
                getContentResolver(),
                id, MediaStore.Video.Thumbnails.MICRO_KIND, null);
        return thumb;
    }

}

}

Activity 3

       public class Editor extends Activity {

private VideoView video;
private MediaController ctlr;
ImageButton video1;
int isClicked = 0;
ImageButton audio;
int isClicked1 = 0;
int data = getIntent(data).getExtras() 
    .getInt("mnt/sdcard-ext"); 

    @Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    getWindow().setFormat(PixelFormat.TRANSLUCENT);
    setContentView(R.layout.editor);


    video1 = (ImageButton) findViewById(R.id.video);
    video1.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            if (isClicked == 0) {
                video1.setImageResource(R.drawable.video_pressed);
                isClicked = 1;
            } else {
                video1.setImageResource(R.drawable.video1);
                isClicked = 0;
            }
          }
     });

    audio = (ImageButton) findViewById(R.id.audio);
    audio.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            if (isClicked1 == 0) {
                audio.setImageResource(R.drawable.audio_pressed);
                isClicked1 = 1;
            } else {
                audio.setImageResource(R.drawable.audio);
                isClicked1 = 0;
            }
        }
      });

    if (clip.exists()) {
          video=(VideoView)findViewById(R.id.video);
          video.setVideoPath(clip.getAbsolutePath());

     ctlr=new MediaController(this);
     ctlr.setMediaPlayer(video);
     video.setMediaController(ctlr);
     video.requestFocus();
     video.start();
    }
  }
 }

I am never gonna be a programmer i'm just trying to pass this class. So don't worry. I need to know how to pass this intent data through to the third activity, but i'm not sure where to put the Extras and get extras.

Android Manifest

              <activity 
      android:name=".Editor"
      android:screenOrientation="landscape" >
       <intent-filter>
      <action 
  android:name="com.ave.Editor" />
      <category 
  android:name="android.intent.category.DEFAULT" />
        </intent-filter>

If you need anymore information let me know. I'm tried of messing with this confusing crap. And any help is appreciated.

---

 Intent data = new Intent(getBaseContext(), Editor.class); data.putExtra("mnt/sdcard-ext", _ID); startActivity(data);

I find it to be easier to expand this.

Intent i=new Intent(this, Editor.class);
i.putExtra("data1", _ID);
startActivity(data);

In the other Activity:

public void onCreate(Bundle icicle)
{
    //===setting content view, any other setup you wanna do
    Intent i=getIntent();
    String data=i.getStringExtra("data1");

    if(data!=null)
        //do something with it
    else
        //the data is null; don't do anything with it or you'll get a NullPointerException
}

I think this is what you wanna do. If not, tell me!

---

The line int data = getIntent(data).getExtras() .getInt("mnt/sdcard-ext"); in Activity 3 should probably be moved to the onCreate() method. Also, when you do putExtra("mnt/sdcard-ext", _ID) and getInt, instead of "mnt/sdcard-ext", you should probably use a package name such as com.example.appname.extraname, as referred to here: http://developer.android.com/reference/android/content/Intent.html