android2.3选择相册图片或者调用系统照相

android2.3选择相册图片或者调用系统照相

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Android 2011-08-31 15:17
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相册androidstringmatrixexceptionnull

悲剧的2.3让我费神了.居然用我之前的2.2代码调用了系统照相功能后，无法回调onActivityResult函数，原因是不能在调用前传路径，亲身经历，记录下来。

/**

* 选择上传的图片

*/

private void checkImage() {

final CharSequence[] items = { "相册", "拍照" };

Builder builder = new AlertDialog.Builder(ProductCommentActivity.this);

builder.setTitle(R.string.preferential_comment_checkimage_title).setItems(items, onClickListener);

builder.create().show();

}

/**

* 选择上传的图片

*/

private DialogInterface.OnClickListener onClickListener = new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

if (which == 1) { // 拍照

Intent getImageByCamera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

startActivityForResult(getImageByCamera, CAMERAMAN_IMAGE);

} else {

Intent getImage = new Intent(Intent.ACTION_GET_CONTENT);

getImage.addCategory(Intent.CATEGORY_OPENABLE);

getImage.setType("image/*");

startActivityForResult(Intent.createChooser(getImage, "Select Picture"), SELECT_IMAGE);

}

}

};

/**

* 选择图片的回调函数

*/

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

Bitmap bitmap = null;

if (RESULT_OK == resultCode) {

if (requestCode == SELECT_IMAGE) { // 选择相册

bitmap = checkImage(data);

} else if (requestCode == CAMERAMAN_IMAGE) {// 照相

super.onActivityResult(requestCode, resultCode, data);

Date date = new Date(System.currentTimeMillis());

SimpleDateFormat dateFormat = new SimpleDateFormat("'IMG'_yyyy_MM_dd_HHmmss");

String imageName = dateFormat.format(date) + ".jpg";

Bundle extras = data.getExtras();

bitmap = (Bitmap) extras.get("data");

String fileParth =saveCommentImage(imageName, bitmap);

if (fileParth != null && !fileParth.equals("")) {

UPLOADIMAGE_PARTH = fileParth; //图片名称(个人项目需要)

}

}

}

if (bitmap != null) {

bitmap = convertBitmapPix(bitmap, commentImageWidth, commentImageHeight);

product_commentRatingUserIconImageView.setImageBitmap(bitmap);

}

}

/**

* 获取相册或SD卡选择的图片

*

* @param data

* @return

*/

@SuppressWarnings("finally")

private Bitmap checkImage(Intent data) {

Bitmap bitmap = null;

Cursor cursor = null;

try {

Uri originalUri = data.getData();

String path = originalUri.toString();

String[] proj = { MediaStore.Images.Media.DATA };

cursor = managedQuery(originalUri, proj, null, null, null);

if (cursor != null) {

int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

cursor.moveToFirst();

// 最后根据索引值获取图片路径

path = cursor.getString(column_index);

cursor.close();

}

path = path.substring(path.indexOf("/sdcard"), path.length());

bitmap = FileHelper.getCommentImage(path);

if (bitmap != null) {

UPLOADIMAGE_PARTH = path;

}

} catch (Exception e) {

Log.e("checkImage", e.getMessage());

} finally {

if (cursor != null) cursor.close();

return bitmap;

}

}

/**

* 保存照相图片到系统默认相册

*

* @param name :图片名称

* @param bitmap :图片对象

* @return

*/

public static String saveCommentImage(String name, Bitmap bitmap) {

String parth = "";

try {

String status = Environment.getExternalStorageState();

if (status.equals(Environment.MEDIA_MOUNTED)) {

// 将图片保存到系统默认相册

String fileParth = Environment.getExternalStorageDirectory().getAbsolutePath() + Constant.IMAGE_FOLDER_NAME + name;

File myFile = new File(fileParth);

myFile.createNewFile();

FileOutputStream fOut = null;

fOut = new FileOutputStream(myFile);

bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);

fOut.flush();

fOut.close();

parth = fileParth;

}

} catch (Exception e) {

Log.e("save Bitmap failed", e.getMessage());

}

return parth;

}

/**

* 转换图片大小

*

* @param bitmap :原始图片对象

* @param newWidth :新图片的宽度

* @param newHeight :新图片的高度

* @return

*/

@SuppressWarnings("finally")

public static Bitmap convertBitmapPix(Bitmap bitmap, int newWidth, int newHeight) {

Bitmap newBitmap = null;

try {

if (bitmap != null) {

int width = bitmap.getWidth();

int height = bitmap.getHeight();

// 计算缩放率

float scaleWidth = ((float) newWidth) / width;

float scaleHeight = ((float) newHeight) / height;

// 创建操作图片用的matrix对象

Matrix matrix = new Matrix();

matrix.postScale(scaleWidth, scaleHeight);

// 创建新的图片

newBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);

}

} catch (Exception e) {

Log.e("convertBitmapPix", e.getMessage());

} finally {

return newBitmap;

}

}