获取路径

Android 一键分享时分享的图片

// imagePath是图片的本地路径，Linked-In以外的平台都支持此参数
//oks.setImagePath("/sdcard/test.jpg");//确保SDcard下面存在此张图片
if (utils.isStrEmpty(newsDetailInfo.data.share_logo)) {//logo
// oks.setImageUrl("http://www.univsport.com/uploadfile/upload/arc/20170320/58cf450b57302.jpg");
Uri uri=Uri.parse("android:resource://com.bwvip.sporteducation/"+R.raw.sport_education);
oks.setImagePath(getRealFilePath(NewsDetailActivity.this,uri));
} else {
oks.setImageUrl(newsDetailInfo.data.share_logo);//logo
}

/**

• 根据Uri获取图片绝对路径，解决Android4.4以上版本Uri转换
• @param activity
• @param imageUri
• @author yaoxing
• @date 2014-10-12
  */
  @TargetApi(19)
  public static String getImageAbsolutePath(Activity context, Uri imageUri) {
  if (context == null || imageUri == null)
  return null;
  if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(context, imageUri)) {
  if (isExternalStorageDocument(imageUri)) {
  String docId = DocumentsContract.getDocumentId(imageUri);
  String[] split = docId.split(":");
  String type = split[0];
  if ("primary".equalsIgnoreCase(type)) {
  return Environment.getExternalStorageDirectory() + "/" + split[1];
  }
  } else if (isDownloadsDocument(imageUri)) {
  String id = DocumentsContract.getDocumentId(imageUri);
  Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
  return getDataColumn(context, contentUri, null, null);
  } else if (isMediaDocument(imageUri)) {
  String docId = DocumentsContract.getDocumentId(imageUri);
  String[] split = docId.split(":");
  String type = split[0];
  Uri contentUri = null;
  if ("image".equals(type)) {
  contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
  } else if ("video".equals(type)) {
  contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
  } else if ("audio".equals(type)) {
  contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
  }
  String selection = MediaStore.Images.Media._ID + "=?";
  String[] selectionArgs = new String[] { split[1] };
  return getDataColumn(context, contentUri, selection, selectionArgs);
  }
  } // MediaStore (and general)
  else if ("content".equalsIgnoreCase(imageUri.getScheme())) {
  // Return the remote address
  if (isGooglePhotosUri(imageUri))
  return imageUri.getLastPathSegment();
  return getDataColumn(context, imageUri, null, null);
  }
  // File
  else if ("file".equalsIgnoreCase(imageUri.getScheme())) {
  return imageUri.getPath();
  }
  return null;
  }

public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
String column = MediaStore.Images.Media.DATA;
String[] projection = { column };
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
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());
  }

/**

• @param uri The Uri to check.
• @return Whether the Uri authority is Google Photos.
  */
  public static boolean isGooglePhotosUri(Uri uri) {
  return "com.google.android.apps.photos.content".equals(uri.getAuthority());
  }

根据图片的Uri，那么我们 获得其在文件系统中的路径
public static String getRealFilePath( final Context context, final Uri uri ) {
if ( null == uri ) return null;
final String scheme = uri.getScheme();
String data = null;
if ( scheme == null )
data = uri.getPath();
else if ( ContentResolver.SCHEME_FILE.equals( scheme ) ) {
data = uri.getPath();
} else if ( ContentResolver.SCHEME_CONTENT.equals( scheme ) ) {
Cursor cursor = context.getContentResolver().query( uri, new String[] { ImageColumns.DATA }, null, null, null );
if ( null != cursor ) {
if ( cursor.moveToFirst() ) {
int index = cursor.getColumnIndex( ImageColumns.DATA );
if ( index > -1 ) {
data = cursor.getString( index );
}
}
cursor.close();
}
}
return data;
}

java中获取工程中res目录路径的方法

第一种：
File f = new File(this.getClass().getResource("/").getPath());
System.out.println(f);
结果:
C:\Documents%20and%20Settings\Administrator\workspace\projectName\bin
获取当前类的所在工程路径;
如果不加“/”
File f = new File(this.getClass().getResource("").getPath());
System.out.println(f);
结果：
C:\Documents%20and%20Settings\Administrator\workspace\projectName\bin\com\test
获取当前类的绝对路径；
第二种：
File directory = new File("");//参数为空
String courseFile = directory.getCanonicalPath() ;
System.out.println(courseFile);
结果：
C:\Documents and Settings\Administrator\workspace\projectName
获取当前类的所在工程路径;
第三种：
URL xmlpath = this.getClass().getClassLoader().getResource("selected.txt");
System.out.println(xmlpath);
结果：
file:/C:/Documents%20and%20Settings/Administrator/workspace/projectName/bin/selected.txt
获取当前工程src目录下selected.txt文件的路径
第四种：
System.out.println(System.getProperty("user.dir"));
结果：
C:\Documents and Settings\Administrator\workspace\projectName
获取当前工程路径
第五种：
System.out.println( System.getProperty("java.class.path"));
结果：
C:\Documents and Settings\Administrator\workspace\projectName\bin
获取当前工程路径