我试图通过parseobject下载我的parseserver的一个映像，它在几秒钟后失败为“i/o失败”。我做了一些研究，发现“i/o失败”可能是连接到parseserver的问题。这就是为什么我试图在同一个脚本中只下载同一类的列名，而且效果很好。我的代码甚至响应找到一个对象。
这就是为什么我问自己，这是一个连接问题还是什么不同的，我不能明白。
我感谢你的帮助。这是我的密码

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.Image;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.parse.FindCallback;
import com.parse.GetDataCallback;
import com.parse.Parse;
import com.parse.ParseException;
import com.parse.ParseFile;
import com.parse.ParseObject;
import com.parse.ParseQuery;

import java.util.List;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        LinearLayout linearLayout = (LinearLayout) findViewById(R.id.linearLayout);
        ImageView imageView = new ImageView(getApplicationContext());
        imageView.setLayoutParams(new ViewGroup.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT
        ));

//TestDownload of String in column
        ParseQuery<ParseObject> query = ParseQuery.getQuery("Image");
        query.setLimit(1);

        query.findInBackground(new FindCallback<ParseObject>() {
            @Override
            public void done(List<ParseObject> objects, ParseException e) {

                if (e == null) {

                    for (ParseObject object : objects)
                    Log.i("Info Testname", object.getString("Name"));

                }
            }
        });

//Download of Image(file)
        ParseQuery<ParseObject> query1 = ParseQuery.getQuery("Image");
        query1.whereEqualTo("Name", "testName");
        query1.findInBackground(new FindCallback<ParseObject>() {
            @Override
            public void done(List<ParseObject> objects, ParseException e) {
                if (e == null) {

                    Log.i("findInBackground", "Retrieved " + objects.size() + " objects");

                    for (ParseObject object : objects) {
                        ParseFile file = (ParseFile) object.get("Image");
                        file.getDataInBackground(new GetDataCallback() {
                            @Override
                            public void done(byte[] data, ParseException ex) {
                                if (ex == null) {
                                    Bitmap bitmapImage = BitmapFactory.decodeByteArray(data, 0, data.length);

                                    // Do something

                                    Log.i("done", "done");

                                } else {
                                    Log.i("info", ex.getMessage());
                                }
                            }
                        });
                    }
                } else {

                    Log.i("info e", e.getMessage());

                }

            }

        });

        }
    }

舱单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.downloadimagefromparse">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

logcat公司

2020-11-18 10:57:13.706 11155-11177/com.example.downloadimagefromparse I/OpenGLRenderer: Initialized EGL, version 1.4
2020-11-18 10:57:13.706 11155-11177/com.example.downloadimagefromparse D/OpenGLRenderer: Swap behavior 1
2020-11-18 10:57:13.706 11155-11177/com.example.downloadimagefromparse W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
2020-11-18 10:57:13.706 11155-11177/com.example.downloadimagefromparse D/OpenGLRenderer: Swap behavior 0
2020-11-18 10:57:13.710 11155-11177/com.example.downloadimagefromparse D/EGL_emulation: eglCreateContext: 0xa9a05340: maj 2 min 0 rcv 2
2020-11-18 10:57:13.715 11155-11177/com.example.downloadimagefromparse D/EGL_emulation: eglMakeCurrent: 0xa9a05340: ver 2 0 (tinfo 0x9ff21ab0)
2020-11-18 10:57:13.728 11155-11177/com.example.downloadimagefromparse D/EGL_emulation: eglMakeCurrent: 0xa9a05340: ver 2 0 (tinfo 0x9ff21ab0)
2020-11-18 10:57:13.913 11155-11155/com.example.downloadimagefromparse I/findInBackground: Retrieved 1 objects
2020-11-18 10:57:13.916 11155-11155/com.example.downloadimagefromparse I/Info Testname: testName
2020-11-18 10:57:38.377 11155-11155/com.example.downloadimagefromparse I/info: i/o failure