uri ---> 绝对路径

/**

* Try to return the absolute file path from the given Uri

*

* @param context

* @param uri

* @return the file path or null

*/

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;

}

绝对路径 -->uri

String type = Utils.ensureNotNull(intent.getType());

Log.d(TAG, "uri is " + uri);

if (uri.getScheme().equals("file") && (type.contains("image/"))) {

String path = uri.getEncodedPath();

Log.d(TAG, "path1 is " + path);

if (path != null) {

path = Uri.decode(path);

Log.d(TAG, "path2 is " + path);

ContentResolver cr = this.getContentResolver();

StringBuffer buff = new StringBuffer();

buff.append("(")

.append(Images.ImageColumns.DATA)

.append("=")

.append("'" + path + "'")

.append(")");

Cursor cur = cr.query(

Images.Media.EXTERNAL_CONTENT_URI,

new String[] { Images.ImageColumns._ID },

buff.toString(), null, null);

int index = 0;

for (cur.moveToFirst(); !cur.isAfterLast(); cur

.moveToNext()) {

index = cur.getColumnIndex(Images.ImageColumns._ID);

// set _id value

index = cur.getInt(index);

}

if (index == 0) {

//do nothing

} else {

Uri uri_temp = Uri

.parse("content://media/external/images/media/"

+ index);

Log.d(TAG, "uri_temp is " + uri_temp);

if (uri_temp != null) {

uri = uri_temp;

}

}

}

}