This is done with intent-filters. Add the following tag to your manifest :
<activity android:name=".CameraActivity" android:clearTaskOnLaunch="true">
<intent-filter>
<action android:name="android.media.action.IMAGE_CAPTURE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
Now your application will appear in the list when the user wants to take a picture.
EDIT :
Here is the proper way to return a bitmap :
Uri saveUri = (Uri) getIntent().getExtras().getParcelable(MediaStore.EXTRA_OUTPUT);
if (saveUri != null)
{
// Save the bitmap to the specified URI (use a try/catch block)
outputStream = getContentResolver().openOutputStream(saveUri);
outputStream.write(data); // write your bitmap here
outputStream.close();
setResult(RESULT_OK);
}
else
{
// If the intent doesn't contain an URI, send the bitmap as a Parcelable
// (it is a good idea to reduce its size to ~50k pixels before)
setResult(RESULT_OK, new Intent("inline-data").putExtra("data", bitmap));
}
You can also check the android built-in Camera app source code.
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