我正在制作一个从相机中获取图像并将其保存在图库中的 android 应用程序。我想要的是获取保存图像的路径。我曾尝试使用 intent.getData() 但不工作..
user1909177
问问题
6911 次
4 回答
1
I have tried using intent.getData() but is not working..
you Will get intent as NULL in Some Samsung Devices Like Samsung Galaxy S3 with Android OS Version 4.1.1.
i have face this Problems and Solve it by Below way you can try it out if it helps you.
While Calling intent for Image Capture :
String storageState = Environment.getExternalStorageState();
if (storageState.equals(Environment.MEDIA_MOUNTED)) {
Intent intent = new Intent(
MediaStore.ACTION_IMAGE_CAPTURE);
String filename = System.currentTimeMillis() + ".jpg";
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, filename);
mImageCaptureUri = getContentResolver().insert(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
values);
intent.putExtra(
android.provider.MediaStore.EXTRA_OUTPUT,
mImageCaptureUri);
try {
startActivityForResult(intent, PICK_FROM_CAMERA);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
}
} else {
new AlertDialog.Builder(BuildInukshk_4_Camera.this)
.setMessage(
"External Storeage (SD Card) is required.\n\nCurrent state: "
+ storageState)
.setCancelable(true).create().show();
}
} else { // pick from file
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
"Complete action using"), PICK_FROM_FILE);
}
Inside OnActivityResult Method :
case PICK_FROM_CAMERA:
Log.i("TAG", "Inside PICK_FROM_CAMERA");
// Final Code As Below
try {
Log.i("TAG", "inside Samsung Phones");
String[] projection = {
MediaStore.Images.Thumbnails._ID, // The columns we want
MediaStore.Images.Thumbnails.IMAGE_ID,
MediaStore.Images.Thumbnails.KIND,
MediaStore.Images.Thumbnails.DATA };
String selection = MediaStore.Images.Thumbnails.KIND + "=" + // Select
// only
// mini's
MediaStore.Images.Thumbnails.MINI_KIND;
String sort = MediaStore.Images.Thumbnails._ID + " DESC";
// At the moment, this is a bit of a hack, as I'm returning ALL
// images, and just taking the latest one. There is a better way
// to
// narrow this down I think with a WHERE clause which is
// currently
// the selection variable
Cursor myCursor = this.managedQuery(
MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI,
projection, selection, null, sort);
long imageId = 0l;
long thumbnailImageId = 0l;
String thumbnailPath = "";
try {
myCursor.moveToFirst();
imageId = myCursor
.getLong(myCursor
.getColumnIndexOrThrow(MediaStore.Images.Thumbnails.IMAGE_ID));
thumbnailImageId = myCursor
.getLong(myCursor
.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID));
thumbnailPath = myCursor
.getString(myCursor
.getColumnIndexOrThrow(MediaStore.Images.Thumbnails.DATA));
} finally {
// myCursor.close();
}
// Create new Cursor to obtain the file Path for the large image
String[] largeFileProjection = {
MediaStore.Images.ImageColumns._ID,
MediaStore.Images.ImageColumns.DATA };
String largeFileSort = MediaStore.Images.ImageColumns._ID
+ " DESC";
myCursor = this.managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
largeFileProjection, null, null, largeFileSort);
String largeImagePath = "";
try {
myCursor.moveToFirst();
// This will actually give yo uthe file path location of the
// image.
largeImagePath = myCursor
.getString(myCursor
.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.DATA));
mImageCaptureUri_samsung = Uri.fromFile(new File(
largeImagePath));
mImageCaptureUri = null;
} finally {
// myCursor.close();
}
// These are the two URI's you'll be interested in. They give
// you a
// handle to the actual images
Uri uriLargeImage = Uri.withAppendedPath(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
String.valueOf(imageId));
Uri uriThumbnailImage = Uri.withAppendedPath(
MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI,
String.valueOf(thumbnailImageId));
// I've left out the remaining code, as all I do is assign the
// URI's
// to my own objects anyways...
} catch (Exception e) {
mImageCaptureUri_samsung = null;
Log.i("TAG",
"inside catch Samsung Phones exception " + e.toString());
}
try {
Log.i("TAG",
"URI Samsung:" + mImageCaptureUri_samsung.getPath());
} catch (Exception e) {
Log.i("TAG", "Excfeption inside Samsung URI :" + e.toString());
}
try {
Log.i("TAG", "URI Normal:" + mImageCaptureUri.getPath());
} catch (Exception e) {
Log.i("TAG", "Excfeption inside Normal URI :" + e.toString());
}
break;
After Running Below Code you Will get Two URIs mImageCaptureUri_samsung and mImageCaptureUri
you will get the mImageCaptureUri as your Path if you are running the App with Simple Devices and you will get your Cpatured Image path in mImageCaptureUri_samsung if you are running with Devices Like Samsung Galaxy S3.
Further you all can go ahead with your Code. it Works For me Very Fine With all the Devices i have tested on.
Also if Someone is having Problem with Above Code than they can reference the Below Great Link Solution of Samsung Galaxy S3
Hope it will Help.
于 2013-02-05T13:02:44.133 回答
0
代码非常好。尝试在 android manifest 中授予 android.permission.WRITE_EXTERNAL_STORAGE 和 android.permission.READ_EXTERNAL_STORAGE 的权限。
于 2013-05-29T11:38:49.557 回答
0
试试这个：
public class Camera extends Activity {
private static final int CAMERA_REQUEST = 1888;
private String selectedImagePath;
String fileName = "capturedImage.jpg";
private static Uri mCapturedImageURI;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
TakePhoto();
}
public void TakePhoto()
{
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, fileName);
mCapturedImageURI = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
values);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode == RESULT_OK)
{
if (requestCode == CAMERA_REQUEST)
{
selectedImagePath = getPath(mCapturedImageURI);
Log.v("selectedImagePath: ", ""+selectedImagePath);
//Save the path to pass between activities
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}
于 2013-02-05T13:04:51.123 回答
0
这就是我所做的：首先创建图像 uri，并使用意图 ACTION_IMAGE_CAPTURE 传递一个带有此值的额外 MediaStore.EXTRA_OUTPUT。
captureButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
capturedImageURI = ImageUtils.takePicture(ReceiptFormActivity.this);
}
});
然后 onActivityResult 将此 uri 路径转换为字符串路径并调用将从该字符串路径获取位图并将其设置在您的 imageView 上的方法。
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CONSTANTS.TAKE_PICTURE)
{
if (resultCode == RESULT_OK)
{
if(capturedImageURI != null)
{
Utils.imagePath = ImageUtils.getStringPathFromURI(ReceiptFormActivity.this, capturedImageURI);;
setThumbnail();
}
}
}
}
void setThumbnail()
{
try{
if(Utils.imagePath != null)
{
((TextView)findViewById(R.id.display_image)).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
File f = new File(Utils.imagePath);
if(f.exists())
{
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri imgUri = Uri.fromFile(f);
intent.setDataAndType(imgUri, "image/*");
startActivityForResult(intent,2000);
}
}
});
File imgFilePath = new File(Utils.imagePath);
if(imgFilePath != null && imgFilePath.exists())
{
Bitmap bitmap = ImageUtils.decodeFile(imgFilePath, CONSTANTS.THUMBNAIL_HEIGHT, CONSTANTS.THUMBNAIL_WIDTH);
if(bitmap != null)
{
receipt_thumbnail.setImageBitmap(bitmap);
return;
}
}
}
}
catch (Exception e) {
receipt_thumbnail.setImageResource(R.drawable.some_img);
}
/*
* default img incase of not any exception and no bitmap either.
*/
receipt_thumbnail.setImageResource(R.drawable.some_img);
}
ImageUtils.java
public class ImageUtils {
public static Uri takePicture(Context context)
{
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "Receipt_" + System.currentTimeMillis());
Uri mCapturedImageURI = context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
Intent intentPicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intentPicture.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
((Activity) context).startActivityForResult(intentPicture,CONSTANTS.TAKE_PICTURE);
return mCapturedImageURI;
}
public static String getStringPathFromURI(Context context, Uri contentUri)
{
try
{
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
catch (Exception e)
{
return contentUri.getPath();
}
}
public static Bitmap decodeFile(File f, int thumbnailReqHeight, int thumbnailReqWidth)
{
Bitmap b = null;
try {
//Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
FileInputStream fis = new FileInputStream(f);
BitmapFactory.decodeStream(fis, null, o);
fis.close();
int scale = 1;
if (o.outHeight > thumbnailReqHeight || o.outWidth > thumbnailReqWidth)
{
scale = (int)Math.pow(2, (int) Math.round(Math.log(thumbnailReqHeight / (double) Math.max(o.outHeight, o.outWidth)) / Math.log(0.5)));
}
//Decode with inSampleSize
o.inJustDecodeBounds = false;
o.inSampleSize = scale;
fis = new FileInputStream(f);
b = BitmapFactory.decodeStream(fis, null, o);
fis.close();
} catch (IOException e) {
}
return b;
}
}
于 2013-02-05T13:17:15.963 回答