我的问题是，当我尝试从我手动上传的Firebase存储中获取图像时，imageview上没有显示任何内容，没有错误，没有错误代码的迹象，所以我很困惑我在哪里错了任何帮助，我希望将所有代码都放在这里详细信息，但是如果您需要任何特定的代码区域，请在注释中说出来，我当然可以感谢您！
这是我的主要活动代码
package com.example.projectandroid;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.TextView;
import android.widget.Toast;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.squareup.picasso.Picasso;
public class MainActivity extends AppCompatActivity {
ImageView resim1;
ImageView resim2;
ImageView resim3;
ImageView resim4;
ImageView resim5;
Button click1;
RatingBar bar1;
RatingBar bar2;
RatingBar bar3;
RatingBar bar4;
RatingBar bar5;
private FirebaseDatabase firebaseDatabase=FirebaseDatabase.getInstance();
private DatabaseReference databaseReference=firebaseDatabase.getReference();
private DatabaseReference image1=databaseReference.child("image");
private DatabaseReference image2=databaseReference.child("image2");
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toast.makeText(getApplicationContext(),"Resim Puanlama Uygulamasına
Hoşgeldiniz!",Toast.LENGTH_LONG).show();
resim1 = (findViewById(R.id.resim1));
resim2 = (findViewById(R.id.resim2));
resim3 = (findViewById(R.id.resim3));
resim4 = (findViewById(R.id.resim4));
resim5 = (findViewById(R.id.resim5));
click1 = (findViewById(R.id.button6));
bar1 =(findViewById(R.id.bar1));
bar2 = (findViewById(R.id.bar2));
bar3 =(findViewById(R.id.bar3));
bar4 = (findViewById(R.id.bar4));
bar5 =(findViewById(R.id.bar5));
final TextView deger = (findViewById(R.id.textView));
final TextView deger2 = (findViewById(R.id.textView2));
final TextView deger3 = (findViewById(R.id.textView3));
final TextView deger4 = (findViewById(R.id.textView4));
final TextView deger5 = (findViewById(R.id.textView5));
final Intent intent = new Intent(this,loginpage.class);
bar1.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
deger.setText(String.valueOf(rating));
}
});
bar2.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
deger2.setText(String.valueOf(rating));
}
});
bar3.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
deger3.setText(String.valueOf(rating));
}
});
bar4.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
deger4.setText(String.valueOf(rating));
}
});
bar5.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
deger5.setText(String.valueOf(rating));
}
});
click1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
intent.putExtra("sonuc",deger.getText().toString());
intent.putExtra("sonuc1",deger2.getText().toString());
intent.putExtra("sonuc2",deger3.getText().toString());
intent.putExtra("sonuc3",deger4.getText().toString());
intent.putExtra("sonuc4",deger5.getText().toString());
startActivity(intent);
}
});
}
@Override
protected void onStart() {
super.onStart();
image1.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
String link=dataSnapshot.getValue(String.class);
Picasso.get().load(link).into(resim1);
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
image2.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
String link2=dataSnapshot.getValue(String.class);
Picasso.get().load(link2).into(resim2);
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}'
这是我的应用程式gradle
'apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
minSdkVersion 14
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'com.google.firebase:firebase-database:16.0.3'
implementation 'com.google.firebase:firebase-database:16.0.4'
implementation 'com.squareup.picasso:picasso:2.71828'
}
apply plugin: 'com.google.gms.google-services'
'
项目gradle'
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.3'
classpath 'com.google.gms:google-services:4.2.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
'