Menifest

Question

一切都很好uri正在拍摄图片和路径但是当第二次活动返回时，图片没有在imageView中显示并在logcat中显示请帮助

E / ashish：/storage/emulated/0/Pictures/FotoAula/IMG_20180329_183302.jpg E / BitmapFactory：无法解码流：java.io.FileNotFoundException：/storage/emulated/0/Pictures/FotoAula/IMG_20180329_183302.jpg：open failed：ENOENT（没有这样的文件或目录）

Menifest

**

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-feature android:name="android.hardware.camera" />

<uses-feature android:name="android.hardware.camera.autofocus" />**

这是第一项活动

camera = (ImageView) findViewById(R.id.takePic);
    camera.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            Intent i = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            file = Uri.fromFile(getOutputMediaFile());
            i.putExtra(MediaStore.EXTRA_OUTPUT, file);

            startActivityForResult(i, CAMERA_REQUEST_CODE);

          //  Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

           // startActivityForResult(intent, CAMERA_REQUEST_CODE);

        }
    });

 private static File getOutputMediaFile()
{
    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
            Environment.DIRECTORY_PICTURES), "FotoAula");

    if (!mediaStorageDir.exists()){
        if (!mediaStorageDir.mkdirs()){
            return null;
        }
    }

    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    return new File(mediaStorageDir.getPath() + File.separator +
            "IMG_"+ timeStamp + ".jpg");
}

private String getPath(Uri uri) throws URISyntaxException {
    final boolean needToCheckUri = Build.VERSION.SDK_INT >= 19;
    String selection = null;
    String[] selectionArgs = null;
    // Uri is different in versions after KITKAT (Android 4.4), we need to
    // deal with different Uris.
    if (needToCheckUri && DocumentsContract.isDocumentUri(getApplicationContext(), uri)) {
        if (isExternalStorageDocument(uri)) {
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] split = docId.split(":");
            return Environment.getExternalStorageDirectory() + "/" + split[1];
        } else if (isDownloadsDocument(uri)) {
            final String id = DocumentsContract.getDocumentId(uri);
            uri = ContentUris.withAppendedId(
                    Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
        } else if (isMediaDocument(uri)) {
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] split = docId.split(":");
            final String type = split[0];
            if ("image".equals(type)) {
                uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
            } else if ("video".equals(type)) {
                uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
            } else if ("audio".equals(type)) {
                uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
            }
            selection = "_id=?";
            selectionArgs = new String[]{
                    split[1]
            };
        }
    }
    if ("content".equalsIgnoreCase(uri.getScheme())) {
        String[] projection = {
                MediaStore.Images.Media.DATA
        };
        Cursor cursor = null;
        try {
            cursor = getContentResolver()
                    .query(uri, projection, selection, selectionArgs, null);
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            if (cursor.moveToFirst()) {
                return cursor.getString(column_index);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    } else if ("file".equalsIgnoreCase(uri.getScheme())) {
        return uri.getPath();
    }
    return null;
}



/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is ExternalStorageProvider.
 */
public static boolean isExternalStorageDocument(Uri uri) {
    return "com.android.externalstorage.documents".equals(uri.getAuthority());
}

/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is DownloadsProvider.
 */
public static boolean isDownloadsDocument(Uri uri) {
    return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}

/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is MediaProvider.
 */
public static boolean isMediaDocument(Uri uri) {
    return "com.android.providers.media.documents".equals(uri.getAuthority());
}

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

    if (requestCode == CAMERA_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {



            File file = getOutputMediaFile();
            String path = null;
            try {
                path = getPath(Uri.fromFile(getOutputMediaFile()));

            } catch (URISyntaxException e) {
                e.printStackTrace();
            }
            Intent intent = new Intent(this, PictureActivity.class);
            intent.putExtra("imgUrl", path.toString());
            startActivity(intent);
        }
    }

这是第二项活动

 Bundle bundle = getIntent().getExtras();

    if (bundle != null) {
        Log.e("ashish", bundle.getString("imgUrl") + "");

         path = Uri.parse(bundle.getString("imgUrl"));
        ImageView selfiiii = (ImageView) findViewById(R.id.mySelfie);
        selfiiii.setImageURI(path);
    }

Answer 1

  path = getPath(Uri.fromFile(getOutputMediaFile()));

您再次致电getOutputMediaFile()。你以后再做所以你得到一个不同的文件名。具有不同的日期时间。

该文件不存在。

您应该记住并使用第一次调用getOutputMediaFile()时获得的路径。

用于相机意图的那个。

ENOENT（没有这样的文件或目录）

Menifest

这是第一项活动

这是第二项活动

1 个答案: