android 选择相册照片和拍照并保存到sd卡

【实例简介】android 选择相册照片和拍照并保存到sd卡
【实例截图】
【核心代码】package lhs.test;

import java.io.ByteArrayOutputStream;
import java.io.File;

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

public class C1Activity extends Activity {
     private static final int NONE = 0;
        private static final int PHOTO_GRAPH = 1;// 拍照
        private static final int PHOTO_ZOOM = 2; // 缩放
        private static final int PHOTO_RESOULT = 3;// 结果
        private static final String IMAGE_UNSPECIFIED = "image/*";
        private ImageView imageView = null;
        private Button btnPhone = null;
        private Button btnTakePicture = null;
        private File file;
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);    
            
            imageView = (ImageView) findViewById(R.id.imageView);
            btnPhone = (Button) findViewById(R.id.btnPhone);
            btnPhone.setOnClickListener(onClickListener);
            btnTakePicture = (Button) findViewById(R.id.btnTakePicture);
            btnTakePicture.setOnClickListener(onClickListener);
        }
        
        private final View.OnClickListener onClickListener = new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                if(v==btnPhone){ //从相册获取图片
                    Intent intent = new Intent(Intent.ACTION_PICK, null);
                    intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);
                    startActivityForResult(intent, PHOTO_ZOOM);
                }else if(v==btnTakePicture){ //从拍照获取图片
                    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
                    String path=Environment.getExternalStorageDirectory().toString();
                    System.out.println(path);
                    File f = new File(path);  
                    if(null!=f)
                    for (File fileDel : f.listFiles()) {//删除遗留的相片保证用户sd卡只有一张temp图
                        if(null!=fileDel)
                        if(fileDel.toString().endsWith("_temp.jpg")){
                            fileDel.delete();
                        }  
                    }
                    file=new File(Environment.getExternalStorageDirectory() "/" System.currentTimeMillis() "_temp.jpg");
                    intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
//                    intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment
//                        .getExternalStorageDirectory(),"temp.jpg")));
                    startActivityForResult(intent, PHOTO_GRAPH);   
                }  
 
            }

        };
    
        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            if (resultCode == NONE)   
                return;
            // 拍照
            if (requestCode == PHOTO_GRAPH) {//拍照
                // 设置文件保存路径
//                System.out.println(Environment.getExternalStorageDirectory());
//                File picture = new File(Environment.getExternalStorageDirectory()
//                        "/temp.jpg");
                
                startPhotoZoom(Uri.fromFile(file));
            }
    
            if (data == null)
                return;
 
            // 读取相册缩放图片
            if (requestCode == PHOTO_ZOOM) {
                startPhotoZoom(data.getData());
            }
            // 处理结果
            if (requestCode == PHOTO_RESOULT) {
                Bundle extras = data.getExtras();
                if (extras != null) {
                    Bitmap photo = extras.getParcelable("data");
                    ByteArrayOutputStream stream = new ByteArrayOutputStream();
                    photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0-100)压缩文件
                    //此处可以把Bitmap保存到sd卡中，具体请看：http://www.cnblogs.com/linjiqin/archive/2011/12/28/2304940.html
                    imageView.setImageBitmap(photo); //把图片显示在ImageView控件上
                }

            }

            super.onActivityResult(requestCode, resultCode, data);
        }

        /**
         * 收缩图片
         *
         * @param uri
         */   
        public void startPhotoZoom(Uri uri) {
            Intent intent = new Intent("com.android.camera.action.CROP");
            intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
            intent.putExtra("crop", "true");
            // aspectX aspectY 是宽高的比例
            intent.putExtra("aspectX", 1);
            intent.putExtra("aspectY", 1);
            // outputX outputY 是裁剪图片宽高
            intent.putExtra("outputX", 64);
            intent.putExtra("outputY", 64);
            intent.putExtra("return-data", true);
            startActivityForResult(intent, PHOTO_RESOULT);
        }
}