你好我的伙伴stackoverflows,

我正在编写一个应用程序,我在其中实现了一个处理共享意图的Activity.

到目前为止它工作正常但在测试期间我遇到了Quickoffice(Android 4.4,KitKat)的问题,

因为它返回一个我无法从中获取文件名的URI.我还尝试与其他应用程序共享,如Dropbox,它在那里工作.

我从Qickoffice应用程序获得的确切URI：

content://com.quickoffice.android.quickcommon.FileContentProvider/5cmeDeeatcdv8IFyu-bEr2w1jSHrvPmCzXGb_VvZulMBErE5Tmfd_5P5kckE68LaEYDVSp3q5r19%0A4sOkpYCEM_VqK6Y%3D%0A

这是我先使用的代码：

public String getRealPathFromURI(Uri contentUri) {

Cursor cursor = null;

try {

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

ContentResolver cr = getContentResolver();

cursor = cr.query(contentUri, proj, null, null, null); //

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

cursor.moveToFirst();

return cursor.getString(column_index);

} catch (Exception exception) {

Log.d("clixend", "Exception: " + exception);

Toast.makeText(this, "Exception: " + exception, Toast.LENGTH_LONG).show();

} finally {

if (cursor != null) {

cursor.close();

}

}

return null;

}

我收到以下错误的地方：

09-23 16:54:17.664 32331-32341/? E/DatabaseUtils﹕ Writing exception to parcel

java.lang.UnsupportedOperationException: Unsupported column: _data

at com.google.android.apps.docs.quickoffice.FileContentProvider.query(FileContentProvider.java:78)

at android.content.ContentProvider.query(ContentProvider.java:857)

at android.content.ContentProvider$Transport.query(ContentProvider.java:200)

at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:112)

at android.os.Binder.execTransact(Binder.java:404)

at dalvik.system.NativeStart.run(Native Method)

public String getNameKitkat(Uri contentUri) {

Cursor cursor = getContentResolver()

.query(contentUri, null, null, null, null, null); //

try {

if (cursor != null && cursor.moveToFirst()) {

String displayName = cursor.getString(

cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));

return displayName;

}

} finally {

cursor.close();

}

return null;

}

但我也收到错误代码：

09-23 16:49:43.317 32331-32421/? E/DatabaseUtils﹕ Writing exception to parcel

java.lang.IllegalArgumentException: columnNames.length = 4, columnValues.size() = 2

at android.database.MatrixCursor.addRow(MatrixCursor.java:157)

at android.database.MatrixCursor.addRow(MatrixCursor.java:128)

at com.google.android.apps.docs.quickoffice.FileContentProvider.query(FileContentProvider.java:95)

at android.content.ContentProvider.query(ContentProvider.java:857)

at android.content.ContentProvider$Transport.query(ContentProvider.java:200)

at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:112)

at android.os.Binder.execTransact(Binder.java:404)

at dalvik.system.NativeStart.run(Native Method)

如果有人知道如何从我从Quickoffice获得的URI中获取名称,我将非常感激.