Android 代码片段---从相册或相机获取图片保存并处理

private void startPhotoAlbum(){Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);startActivityForResult(intent, UConstants.GETIMAGE);}private String urlTempPic = "";private void startCamera(){Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);urlTempPic = getImagePath();i.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(urlTempPic)));startActivityForResult(i, UConstants.CAPUTRE);}public static String getImagePath(){String path = null;String dir = getExternalStoragePublicDirectory(UDataStorage.Dir_Pictures) + "/pyj/temp/pics/";path = dir + System.currentTimeMillis() + ".jpg";ensureDir(dir);return path;}public static boolean ensureDir(String dir){boolean result = false;File file = new File(dir);if (!file.exists())result = file.mkdirs();return result;}public static File getExternalStoragePublicDirectory(String type){File file = null;String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + type;file = new File(path);if (!file.exists())file.mkdirs();return file;}

private static final int DIALOG_YES_NO_LONG_MESSAGE = 1;@Overrideprotected Dialog onCreateDialog(int id) {// TODO Auto-generated method stubswitch (id) {case DIALOG_YES_NO_LONG_MESSAGE:            return new AlertDialog.Builder(JSelectEventTypeActivity.this,AlertDialog.THEME_HOLO_LIGHT)                .setTitle("提示")                .setPositiveButton("从相册", new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int whichButton) {                            /* User clicked OK so do some stuff */                    startPhotoAlbum();                    }                })                .setNeutralButton("从相机", new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int whichButton) {                        /* User clicked Something so do some stuff */                    startCamera();                    }                })                .setNegativeButton("不需要", new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog, int whichButton) {                    }                })                .create();}return null;}

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {// TODO Auto-generated method stubswitch (resultCode) {case RESULT_OK:if (requestCode == UConstants.CAPUTRE){// Load up the image's dimensions not the image itselftry {BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();bmpFactoryOptions.inJustDecodeBounds = true;Bitmap bmp = BitmapFactory.decodeFile(urlTempPic,bmpFactoryOptions);int widthRatio = (int) Math.ceil(bmpFactoryOptions.outWidth / (float) 1080);if (widthRatio > 1){bmpFactoryOptions.inSampleSize = widthRatio;}bmpFactoryOptions.inJustDecodeBounds = false;bmp = BitmapFactory.decodeFile(urlTempPic, bmpFactoryOptions);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}else if (requestCode == UConstants.GETIMAGE){Uri imageFileUri = data.getData();try {BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();bmpFactoryOptions.inJustDecodeBounds = true;Bitmap bmp = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageFileUri), null, bmpFactoryOptions);int widthRatio = (int) Math.ceil(bmpFactoryOptions.outWidth/ (float) 1080);if (widthRatio > 1) {bmpFactoryOptions.inSampleSize = widthRatio;}bmpFactoryOptions.inJustDecodeBounds = false;bmp = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageFileUri),null, bmpFactoryOptions);} catch (Exception e) {// TODO: handle exception}}break;default:break;}}