调用系统的照相，相册，裁剪功能--activity实现

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.text.SimpleDateFormat;

import com.legaldaily_pockettrump.Constant;
import com.legaldaily_pockettrump.R;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.RectF;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.MediaStore.Images.Media;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.TextView;

/**
 * 说明：主要用于选择文件操作
 */

public class SelectPicActivity extends Activity implements OnClickListener {
	private TextView takePhotoBtn, albumBtn, cancelBtn;
	private Intent lastIntent;

	private static final int REQUEST_PHOTOALBUM = 1;// 相册
	private static final int REQUEST_PHOTOGRAPH = 2;// 照相
	private static final int REQUEST_PHOTOCROP = 3;// 裁剪
	private Uri cameraUri; // 照相后图片保存路径
	private String address;
	private File fileDir;;// 保存图片的根目录
	
	private static final String IMAGE_FILE_LOCATION = "file:///sdcard//LegalDaily/imageTemp/";//temp file
	private Uri cropImageUri;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.select_bottom_dialog);
		initView();
	}

	/**
	 * 初始化加载View
	 */
	private void initView() {
		takePhotoBtn = (TextView) findViewById(R.id.takephoto_text);
		takePhotoBtn.setOnClickListener(this);
		albumBtn = (TextView) findViewById(R.id.album_text);
		albumBtn.setOnClickListener(this);
		cancelBtn = (TextView) findViewById(R.id.cancle_text);
		cancelBtn.setOnClickListener(this);
		lastIntent = getIntent();
		
		fileDir = new File(Constant.imageDir);
		if (!fileDir.exists()) {
			fileDir.mkdirs();
		}
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.takephoto_text:
			// 拍照
			photoGraph();
			break;
		case R.id.album_text:// 相册
			photoAlbum();
			break;
		case R.id.cancle_text:
			finish();
			break;
		default:
			break;
		}
	}

	/**
	 * 相册
	 */
	private void photoAlbum() {
		Intent openAlbumIntent = new Intent(Intent.ACTION_PICK,
				Media.EXTERNAL_CONTENT_URI);
		startActivityForResult(openAlbumIntent, REQUEST_PHOTOALBUM);
	}

	/**
	 * 照相
	 */
	private void photoGraph() {
		try {
			Intent openCameraIntent = new Intent(
					MediaStore.ACTION_IMAGE_CAPTURE);
			String sdcardState = Environment.getExternalStorageState();
			File file = null;
			if (Environment.MEDIA_MOUNTED.equals(sdcardState)) {
				// 是否有xxx.jpeg文件
				file = new File(Constant.imageDir + System.currentTimeMillis()
						+ ".JPEG");
			}
			if (file != null) {
				cameraUri = Uri.fromFile(file);
				openCameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, cameraUri);
				startActivityForResult(openCameraIntent, REQUEST_PHOTOGRAPH);
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void startPhotoZoom(Uri uri) {
		try {
			// 获取系统时间 然后将裁剪后的图片保存至指定的文件夹
			SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyyMMddhhmmss");
			address = sDateFormat.format(new java.util.Date());
			cropImageUri = Uri.parse(IMAGE_FILE_LOCATION + address+ ".JPEG");
			
			Intent intent = new Intent("com.android.camera.action.CROP");
			// 照片URL地址
			intent.setDataAndType(uri, "image/*");
			intent.putExtra("crop", "true");
			intent.putExtra("aspectX", 1);
			intent.putExtra("aspectY", 1);
			intent.putExtra("outputX", 300);
			intent.putExtra("outputY", 300);
			intent.putExtra("scale", true);
			// 输出路径
			intent.putExtra(MediaStore.EXTRA_OUTPUT, cropImageUri);
			// 输出格式
			intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
			// 不启用人脸识别
			intent.putExtra("noFaceDetection", false);
			intent.putExtra("return-data", false);
			startActivityForResult(intent, REQUEST_PHOTOCROP);
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}

	/**
	 * 保存裁剪之后的图片数据
	 * 
	 * @param picdata
	 */
	private void setPicToView(Intent data) {
		FileInputStream fis;
		try {
			fis = new FileInputStream(Constant.imageDir + address + ".JPEG");
			Bitmap bitmap = BitmapFactory.decodeStream(fis); // /把流转化为Bitmap图片
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
			byte[] bitmapByte = baos.toByteArray();
			lastIntent.putExtra("bitmap", bitmapByte);
			setResult(Activity.RESULT_OK, lastIntent);
			finish();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	/**
	 * 
	 * @param x
	 *            图像的宽度
	 * @param y
	 *            图像的高度
	 * @param image
	 *            源图片
	 * @param outerRadiusRat
	 *            圆角的大小
	 * @return 圆角图片
	 */
	public static Bitmap createFramedPhoto(int x, int y, Bitmap image, float outerRadiusRat) {
		// 根据源文件新建一个darwable对象
		Drawable imageDrawable = new BitmapDrawable(image);

		// 新建一个新的输出图片
		Bitmap output = Bitmap.createBitmap(x, y, Bitmap.Config.ARGB_8888);
		Canvas canvas = new Canvas(output);

		// 新建一个矩形
		RectF outerRect = new RectF(0, 0, x, y);

		// 产生一个红色的圆角矩形
		Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
		paint.setColor(Color.RED);
		canvas.drawRoundRect(outerRect, outerRadiusRat, outerRadiusRat, paint);

		// 将源图片绘制到这个圆角矩形上
		paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
		imageDrawable.setBounds(0, 0, x, y);
		canvas.saveLayer(outerRect, paint, Canvas.ALL_SAVE_FLAG);
		imageDrawable.draw(canvas);
		canvas.restore();

		return output;
	}
	
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (resultCode == 0)
			return;
		switch (requestCode) {
			case REQUEST_PHOTOGRAPH:// 拍照返回
				startPhotoZoom(cameraUri);
				break;
			case REQUEST_PHOTOALBUM:// 相册返回
				if (data != null) {
					Uri uri = data.getData();
					if (uri != null)
						startPhotoZoom(uri);
				}
				break;
			case REQUEST_PHOTOCROP:// 裁剪返回
				if (data != null)
					setPicToView(data);
				break;
			default:
				break;
		}
		super.onActivityResult(requestCode, resultCode, data);
	}

}