将几张图片上传到firebase存储

我试图将几张图片上传到firebase存储。我写了下面的代码如下： -将几张图片上传到firebase存储

private static void uploadImage(String imageUrl) 
    { 
     FirebaseStorage storage = FirebaseStorage.getInstance(); 
     final StorageReference storageRef = storage.getReferenceFromUrl("gs://image-store.appspot.com/"); 
     Uri file = Uri.fromFile(new File(imageUrl)); 
     String imageName = System.currentTimeMillis()+".jpg"; 
     StorageReference imageRef = storageRef.child("images").child(imageName); 
     UploadTask uploadTask = imageRef.putFile(file); 
    } 

    private static uploadImages(String[] imageUrls) 
    { 
     for(imageUrl : imageUrls) 
     { 
      uploadImage(imageUrl) 
     } 
    }

当有较少的图像上传，上面的代码工作正常。但是，当周围有一个100+图片它创建几个异步线程，并提供了以下错误： -

Exception java.util.concurrent.RejectedExecutionException: Task [email protected] rejected from [email protected][Running, pool size = 2, active threads = 2, queued tasks = 128, completed tasks = 59] 
java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution (ThreadPoolExecutor.java:2042) 
java.util.concurrent.ThreadPoolExecutor.reject (ThreadPoolExecutor.java:796) 
java.util.concurrent.ThreadPoolExecutor.execute (ThreadPoolExecutor.java:1370) 
com.google.firebase.storage.zzd.zzu() 
com.google.firebase.storage.UploadTask.schedule() 
com.google.firebase.storage.StorageTask.an() 
com.google.firebase.storage.StorageReference.putFile() 
com.indiacom.blanketfos.util.FirebaseUtil.uploadImage (FirebaseUtil.java:64) 
com.indiacom.blanketfos.util.FirebaseUtil.uploadImages (FirebaseUtil.java:126) 
com.indiacom.blanketfos.util.FirebaseUtil.syncRealmToFirebase (FirebaseUtil.java:33) 
com.indiacom.blanketfos.ui.FormActivity.onOptionsItemSelected (FormActivity.java:406) 
android.app.Activity.onMenuItemSelected (Activity.java:2983) 
android.support.v4.app.FragmentActivity.onMenuItemSelected (FragmentActivity.java:408) 
android.support.v7.app.AppCompatActivity.onMenuItemSelected (AppCompatActivity.java:195) 
android.support.v7.view.WindowCallbackWrapper.onMenuItemSelected (WindowCallbackWrapper.java:113) 
android.support.v7.app.AppCompatDelegateImplV9.onMenuItemSelected (AppCompatDelegateImplV9.java:675) 
android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected (MenuBuilder.java:822) 
android.support.v7.view.menu.MenuItemImpl.invoke (MenuItemImpl.java:156) 
android.support.v7.view.menu.MenuBuilder.performItemAction (MenuBuilder.java:969) 
android.support.v7.view.menu.MenuBuilder.performItemAction (MenuBuilder.java:959) 
android.support.v7.widget.ActionMenuView.invokeItem (ActionMenuView.java:623) 
android.support.v7.view.menu.ActionMenuItemView.onClick (ActionMenuItemView.java:154) 
android.view.View.performClick (View.java:4781) 
android.view.View$PerformClick.run (View.java:19907) 
android.os.Handler.handleCallback (Handler.java:739) 
android.os.Handler.dispatchMessage (Handler.java:95) 
android.os.Looper.loop (Looper.java:160) 
android.app.ActivityThread.main (ActivityThread.java:5541) 
java.lang.reflect.Method.invoke (Method.java) 
java.lang.reflect.Method.invoke (Method.java:372) 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:964) 
com.android.internal.os.ZygoteInit.main (ZygoteInit.java:759)

所以我的问题是什么是最好的，并上传多张图像到存储火力无落地的最有效的方法陷入这样的问题。

来源

2017-06-11 Parag Kadam

并行上传100个图像听起来像一个坏主意。我会使用更合理的并行上传数量（比如3-5），并且只有在现有的一个上传完成后才启动新的上传（您可以[监控上传任务的进度]（https://firebase.google .COM /文档/存储/安卓/上传，文件＃monitor_upload_progress））。 –

如果您将Executor限制为设备上的核心数量，请说4，然后运行。但是，这当然会让事情变得更慢。发布到Firebase实时数据库是可以的，但我想这是非常快的，而上传速度很慢，抓住一个线程。也许你只有在所有UploadTasks完成后才能在执行器中启动一个新的runnabletask？ –

使用addOnCompleteListener向您的处理程序发送一条空消息，以便重新开始下载/上传。这对我有用。 –

我有同样的问题，发现Firebase存储只接受最多100个并发上传免费帐户。所以这里是我所做的，并希望它有帮助：

private static void uploadFS(final File[] files, final StorageReference certRef, int startIndex, int concurrent) { 
    int cnt = 0; 
    File file; 
    Uri uriFile; 
    StorageReference ref; 
    while (cnt < concurrent) { 
     file = files[startIndex]; 
     startIndex++; 
     if (file.exists() && file.length() > 0) { // local cert file exits 
      uriFile = Uri.fromFile(file); 
      final int sIdx = startIndex; 
      ref = certRef.child("cert/" + uriFile.getLastPathSegment()); 
      ref.putFile(uriFile).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() { 
       @Override 
       public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) { 
        uploadFS(files, certRef, sIdx, 1); 
       } 
      }); 
     } 
     cnt++; 
    } 
} 
public static void uploadCert() { 
    StorageReference rootStorageRef = getStorageRefRoot(); 
    if (rootStorageRef != null) { // loop through download folder 
     File certFolder = new File(MainActivity.DOWNLOAD_FULL_PATH + "cert/"); 
     if (certFolder.isDirectory()) { 
      File[] certFiles = certFolder.listFiles(); 
      uploadFS(certFiles, rootStorageRef, 0, 3); // 3 is concurrent upload tasks 
     } 
    } 
}

来源

2018-02-21 08:18:20 Pan

将几张图片上传到firebase存储

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