Android拍照与相册选取图片

做过几次拍照，相册选取图片，但都记不住，这次发表个简单的保存下

private static final int PHOTO_GRAPH = 1;// 拍照
    private static final int PHOTO_ALBUM = 2; // 相册获取
    private static final String IMAGE_TYPE = "image/*";

public void takePhoto(){
　　
　String SDState = Environment.getExternalStorageState();  
  if(SDState.equals(Environment.MEDIA_MOUNTED))  
            {  
                imgfileName = System.currentTimeMillis() + ".jpg";
                Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
                intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
                        Environment.getExternalStorageDirectory(), imgfileName)));
                intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 0);
                startActivityForResult(intent, PHOTO_GRAPH);
                dialog.dismiss();
            }else{  
                Toast.makeText(getThis(),"内存卡不存在", Toast.LENGTH_SHORT).show();  
            }           
 }

//回调函数
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);if(resultCode == RESULT_OK){
            switch (requestCode) {
            case NONE:
                
                break;
            case PHOTO_GRAPH://拍照
                String myJpgPath = Environment.getExternalStorageDirectory()+"/"+imgfileName;
                if(ImageThumbnail.isFileExit(myJpgPath) == true){
                    img_SFZ.setImageBitmap(ImageThumbnail.getImageThumbnail(myJpgPath, img_SFZ.getWidth(), img_SFZ.getHeight()));
                }
                break;
            case PHOTO_ALBUM://相册获取
                //照片的原始资源地址
                Uri originalUri = data.getData(); 
                try {
                    //获取图片的路径：
                    String[] proj = {MediaStore.Images.Media.DATA};        
                    cursor = managedQuery(originalUri, proj, null, null, null); 
                    //按我个人理解 这个是获得用户选择的图片的索引值
                    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);           
                    cursor.moveToFirst();
                    //最后根据索引值获取图片路径
                    String imgPath = cursor.getString(column_index);
                    if (ImageThumbnail.isFileExit(imgPath) == true) {
                        img_SFZ.setImageBitmap(ImageThumbnail.getImageThumbnail(imgPath, img_SFZ.getWidth(), img_SFZ.getHeight()));
                    }
                } catch (Exception e) {
                    // TODO: handle exception
                }
                
                break;
            default:
                break;
            }
        }

/**
     * 图片压缩显示
     * @param imagePath
     * @param width
     * @param height
     * @return
     */
    public static Bitmap getImageThumbnail(String imagePath, int width,
            int height) {
        Bitmap bitmap = null;
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        // 获取这个图片的宽和高，注意此处的bitmap为null
        bitmap = BitmapFactory.decodeFile(imagePath, options);
        options.inJustDecodeBounds = false; // 设为 false
        // 计算缩放比
        int h = options.outHeight;
        int w = options.outWidth;
        int beWidth = w / width;
        int beHeight = h / height;
        int be = 1;
        if (beWidth < beHeight) {
            be = beWidth;
        } else {
            be = beHeight;
        }
        if (be <= 0) {
            be = 1;
        }
        options.inSampleSize = be;
        // 重新读入图片，读取缩放后的bitmap，注意这次要把options.inJustDecodeBounds 设为 false
        bitmap = BitmapFactory.decodeFile(imagePath, options);
        // 利用ThumbnailUtils来创建缩略图，这里要指定要缩放哪个Bitmap对象
        bitmap = ThumbnailUtils.extractThumbnail(bitmap, width, height,
                ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
        return bitmap;
    }