Question

我正在使用下面的代码将图像分享到想要的应用程序，这适用于大多数应用程序，除了viber。每当我尝试将图像共享到viber时，viber都会崩溃并出现以下错误：

FATAL EXCEPTION: ThreadManager::idleTasksHandler
                                 Process: com.viber.voip, PID: 16668
                                 java.lang.IllegalArgumentException: column '_data' does not exist
                                     at android.database.AbstractCursor.getColumnIndexOrThrow(AbstractCursor.java:303)
                                     at android.database.CursorWrapper.getColumnIndexOrThrow(CursorWrapper.java:78)
                                     at com.viber.voip.util.aw.a(SourceFile:238)
                                     at com.viber.voip.util.aw.b(SourceFile:206)
                                     at com.viber.voip.util.aw.a(SourceFile:141)
                                     at com.viber.voip.util.b.n.a(SourceFile:1204)
                                     at com.viber.voip.util.bm.run(SourceFile:207)
                                     at android.os.Handler.handleCallback(Handler.java:739)
                                     at android.os.Handler.dispatchMessage(Handler.java:95)
                                     at com.viber.voip.be.dispatchMessage(SourceFile:32)
                                     at android.os.Looper.loop(Looper.java:135)
                                     at android.os.HandlerThread.run(HandlerThread.java:61)
                                     at com.viber.voip.cj.run(SourceFile:100)

我的Uriess看起来像content://com.myapp.fileprovider/share_images/nxt_emoji_26.png
代码

public class ShareSmile {
  public static void share(Context context, int id, String selectedPackage) {
    String name = context.getResources().getResourceEntryName(id);
    try{
    if (name.contains("ic_")) {
      name = name.replace("ic_", "");
      File imagePath = new File(context.getFilesDir(), "image_assets/smiles");
      File newFile = new File(imagePath, name + ".png");
      Uri contentUri =
          FileProvider.getUriForFile(context, "com.myapp.fileprovider", newFile);
      Intent shareIntent = shareImage(contentUri,context);
      shareIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

      if (TextUtils.isEmpty(selectedPackage)) {
        //create chooser
       Intent sendIntent= Intent.createChooser(shareIntent, context.getString(R.string.send_via));
        sendIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(sendIntent);
      } else {
        //send to specific app
        shareIntent.setPackage(selectedPackage);
        context.startActivity(shareIntent);
      }
    }}catch (Exception e){
      HashMap<String,Boolean> map = MyPrefs.getSupportedApss(context);
      map.put(selectedPackage,false);

      Toast.makeText(context, R.string.share_smile_error,Toast.LENGTH_LONG).show();
    }
  }

  public static Intent shareImage(Uri uri,Context context) {
    Intent shareIntent = new Intent(Intent.ACTION_SEND_MULTIPLE);
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
      shareIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
    } else {
      shareIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT);
    }
    shareIntent.setType("image/png");
    ArrayList<Uri> streamUris = new ArrayList<>();
    streamUris.add(uri);
    shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, streamUris);
    //grant permission to access fileprovider
    List<ResolveInfo> resInfoList = context.getPackageManager()
        .queryIntentActivities(shareIntent, PackageManager.MATCH_DEFAULT_ONLY);
    for (ResolveInfo resolveInfo : resInfoList) {
      String packageName = resolveInfo.activityInfo.packageName;
      context.grantUriPermission(packageName, uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
    }
    return shareIntent;
  }
}

Answer 1

Viber的作者缺乏经验，认为所有content Uri值都来自MediaStore，因此他们正在查询不存在的_data列

My LegacyCompatCursorWrapper可与FileProvider一起使用，根据this Stack Overflow answer中显示的方法，尝试改善与Viber等错误应用的兼容性。 This sample app演示了LegacyCompatCursorWrapper的使用。您继承FileProvider，覆盖query()，并将Cursor返回的super.query()包裹在LegacyCompatCursorWrapper中：

/***
 Copyright (c) 2015 CommonsWare, LLC
 Licensed under the Apache License, Version 2.0 (the "License"); you may not
 use this file except in compliance with the License. You may obtain a copy
 of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
 by applicable law or agreed to in writing, software distributed under the
 License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
 OF ANY KIND, either express or implied. See the License for the specific
 language governing permissions and limitations under the License.

 From _The Busy Coder's Guide to Android Development_
 https://commonsware.com/Android
 */

package com.commonsware.android.cp.v4file;

import android.database.Cursor;
import android.net.Uri;
import android.support.v4.content.FileProvider;
import com.commonsware.cwac.provider.LegacyCompatCursorWrapper;

public class LegacyCompatFileProvider extends FileProvider {
  @Override
  public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
    return(new LegacyCompatCursorWrapper(super.query(uri, projection, selection, selectionArgs, sortOrder)));
  }
}

然后，在清单中注册您的FileProvider子类，否则就像使用FileProvider一样使用它。

如何通过文件提供商将图像分享到viber应用程序？

1 个答案: