private void doTakePhotoAction() {
    
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    //Wysie_Soh: Create path for temp file
    mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),
                        "tmp_contact_" + String.valueOf(System.currentTimeMillis()) + ".jpg"));

    intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mImageCaptureUri);

    try {
        intent.putExtra("return-data", true);
        startActivityForResult(intent, PICK_FROM_CAMERA);
    } catch (ActivityNotFoundException e) {
        //Do nothing for now
    }
}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != RESULT_OK) {
        return;
    }

    switch (requestCode) {

    case CROP_FROM_CAMERA: {
        //Wysie_Soh: After a picture is taken, it will go to PICK_FROM_CAMERA, which will then come here
        //after the image is cropped.

        final Bundle extras = data.getExtras();

        if (extras != null) {
            Bitmap photo = extras.getParcelable("data");

            mPhoto = photo;
            mPhotoChanged = true;
            mPhotoImageView.setImageBitmap(photo);
            setPhotoPresent(true);
        }

        //Wysie_Soh: Delete the temporary file                        
        File f = new File(mImageCaptureUri.getPath());            
        if (f.exists()) {
            f.delete();
        }

        InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        mgr.showSoftInput(mPhotoImageView, InputMethodManager.SHOW_IMPLICIT);

        break;
    }

    case PICK_FROM_CAMERA: {
        //Wysie_Soh: After an image is taken and saved to the location of mImageCaptureUri, come here
        //and load the crop editor, with the necessary parameters (96x96, 1:1 ratio)

        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setClassName("com.android.camera", "com.android.camera.CropImage");

        intent.setData(mImageCaptureUri);
        intent.putExtra("outputX", 96);
        intent.putExtra("outputY", 96);
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        intent.putExtra("scale", true);
        intent.putExtra("return-data", true);            
        startActivityForResult(intent, CROP_FROM_CAMERA);

        break;

    }
    }
}

 具体可以参考

http://www.androidworks.com/crop_large_photos_with_android

Intent Details:

First, lets discuss this Intent, and its features.    After seeing some example code, I found that I could call it easily using an Intent like this:

Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
intent.setType(“image/*”);
intent.putExtra(“crop”, “true”);
…

However, this is when I lacked additional documentation, what are the options, etc…  So, I have put together a table, and a demo program, in an attempt to demonstrated all available options from this control.  You may use my example code in your application, and expand upon it.  I’ll attach it to this post.

Now, the biggest confusion is going to be around this MediaStore.EXTRA_OUTPUT and return-data options.

You basically have 2 ways to get the bitmap back from this Intent, you can ask for it inline or provide a Uri that it can write to.

Option #1:  If you set return-data to "true", you will get back an Action = inline-data, and the bitmap returned will be inside the (Bitmap)extras.getParcelable("data").  Note:  If the image ends up being to large, you will get a nasty exception with this method, so you are restricted to keeping your outputX and outputY small.  In my code example attached, I did NOT use that method because of this reason.

Here is the code from CropImage.java (Android source code) where they write it inline:

Option #2:  If you set return-data to "false", you will not receive a Bitmap back from the onActivityResult Intent in-line, instead you will need to set MediaStore.EXTRA_OUTPUT to a Uri (of File scheme only) where you want the Bitmap to be stored.  This has some restrictions, first you need to have a temp filesystem location in order to give the file scheme URI, not a huge problem (except on some devices that don't have sdcards).

Here is the code from CropImage.java (Android source code) where they write it to your Uri:

I have attached some example code that should allow you to test various configurations.  Let me know if you find it useful (or not).D
Download here -> MediaStoreTest

From the code (the essential parts)

public class SerializedCookie implements Serializable {

	private static final long serialVersionUID = 5327445113190674523L; //arbitrary

	private String name;
	private String value;
	private String domain;

	public SerializedCookie(Cookie cookie){
		this.name = cookie.getName();
		this.value = cookie.getValue();
		this.domain = cookie.getDomain();
	}

	public String getName(){
		return name;
	}

	public String getValue(){
		return value;
	}
	public String getDomain(){
		return domain;
	}
}

DefaultHttpClient client; //declared here, but get the client however you must. 

	@Override
	protected void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		List<Cookie> cookies =client.getCookies();
		if (!cookies.isEmpty()){
			Cookie sessionInfo = cookies.get(0);
			outState.putSerializable("sessionInfo", new SerializedCookie(sessionInfo));
		}
DefaultHttpClient client; //declared here, but get the client however you must. 

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);

	if (client.getCookies().isEmpty()){
		if (savedInstanceState.containsKey("sessionInfo")){
			SerializedCookie cookie = (SerializedCookie) savedInstanceState.
				getSerializable("sessionInfo");

			BasicClientCookie newCookie = new BasicClientCookie(cookie.getName(),
					cookie.getValue());
					newCookie.setDomain(cookie.getDomain());

			client.addCookie(newCookie);
		} else {
                               //for whatever reason the session information couldn't be obtained,
                               //take action here
		}
	}