CoderzHeaven

This is a sample program that launches the camera and crop the captured image.

Check this link to another crop image example.

http://www.coderzheaven.com/2011/03/15/crop-an-image-in-android/

This is the layout xml.
activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="3dp"
        android:text="@string/intro"
        android:textStyle="bold" />

    <Button
        android:id="@+id/capture_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/capture" />

    <ImageView
        android:id="@+id/picture"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:contentDescription="@string/picture" />

</LinearLayout>

Now this is the Main Java File that implements the crop functionality.

Here we are using the “com.android.camera.action.CROP” Intent to crop the Image passing the captured Image URI to it.

package com.coderzheaven.cropimage;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class ShootAndCropActivity extends Activity implements OnClickListener {

	final int CAMERA_CAPTURE = 1;
	final int CROP_PIC = 2;
	private Uri picUri;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		Button captureBtn = (Button) findViewById(R.id.capture_btn);
		captureBtn.setOnClickListener(this);
	}

	public void onClick(View v) {
		if (v.getId() == R.id.capture_btn) {
			try {
				// use standard intent to capture an image
				Intent captureIntent = new Intent(
						MediaStore.ACTION_IMAGE_CAPTURE);
				// we will handle the returned data in onActivityResult
				startActivityForResult(captureIntent, CAMERA_CAPTURE);
			} catch (ActivityNotFoundException anfe) {
				Toast toast = Toast.makeText(this, "This device doesn't support the crop action!",
						Toast.LENGTH_SHORT);
				toast.show();
			}
		}
	}

	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (resultCode == RESULT_OK) {
			if (requestCode == CAMERA_CAPTURE) {
				// get the Uri for the captured image
				picUri = data.getData();
				performCrop();
			}
			// user is returning from cropping the image
			else if (requestCode == CROP_PIC) {
				// get the returned data
				Bundle extras = data.getExtras();
				// get the cropped bitmap
				Bitmap thePic = extras.getParcelable("data");
				ImageView picView = (ImageView) findViewById(R.id.picture);
				picView.setImageBitmap(thePic);
			}
		}
	}

	/**
	 * this function does the crop operation.
	 */
	private void performCrop() {
		// take care of exceptions
		try {
			// call the standard crop action intent (the user device may not
			// support it)
			Intent cropIntent = new Intent("com.android.camera.action.CROP");
			// indicate image type and Uri
			cropIntent.setDataAndType(picUri, "image/*");
			// set crop properties
			cropIntent.putExtra("crop", "true");
			// indicate aspect of desired crop
			cropIntent.putExtra("aspectX", 2);
			cropIntent.putExtra("aspectY", 1);
			// indicate output X and Y
			cropIntent.putExtra("outputX", 256);
			cropIntent.putExtra("outputY", 256);
			// retrieve data on return
			cropIntent.putExtra("return-data", true);
			// start the activity - we handle returning in onActivityResult
			startActivityForResult(cropIntent, CROP_PIC);
		}
		// respond to users whose devices do not support the crop action
		catch (ActivityNotFoundException anfe) {
			Toast toast = Toast
					.makeText(this, "This device doesn't support the crop action!", Toast.LENGTH_SHORT);
			toast.show();
		}
	}
}

Download the complete source code for the above example from here.