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
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