Java 从Firestore获取所有图像URL
我正在尝试使用Java 从Firestore获取所有图像URL,java,android,firebase,google-cloud-firestore,firebase-storage,Java,Android,Firebase,Google Cloud Firestore,Firebase Storage,我正在尝试使用Firestore。我需要获取存储在Firestore文件夹中的所有图像URL。我目前正在跟踪 使用时: db.collection("images") .get() .addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() { @Override public void onComplete(@NonNull Task<Quer
Firestore
。我需要获取存储在Firestore
文件夹中的所有图像URL。我目前正在跟踪
使用时:
db.collection("images")
.get()
.addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (QueryDocumentSnapshot document : task.getResult()) {
Log.d(TAG, document.getId() + " => " + document.getData());
}
} else {
Log.w(TAG, "Error getting documents.", task.getException());
}
}
});
db.collection(“图像”)
.get()
.addOnCompleteListener(新的OnCompleteListener(){
@凌驾
未完成的公共void(@NonNull任务){
if(task.issusccessful()){
对于(QueryDocumentSnapshot文档:task.getResult()){
Log.d(标记,document.getId()+“=>”+document.getData());
}
}否则{
Log.w(标记“获取文档时出错”,task.getException());
}
}
});
我得到下面的错误
一开始我是
程序类型已存在:com.google.common.annotations.GwtCompatible
解决办法是:
implementation ("com.google.firebase:firebase-firestore:17.0.3"){
exclude group: 'com.google.guava'
}
java.lang.RuntimeException: Internal error in Firestore (0.6.6-dev).
at com.google.firebase.firestore.g.zza.zzb(SourceFile:324)
at com.google.firebase.firestore.g.zzd.run(Unknown Source:2)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.NoSuchMethodError: No static method checkArgument(ZLjava/lang/String;I)V in class Lcom/google/common/base/Preconditions; or its super classes (declaration of 'com.google.common.base.Preconditions' appears in /data/app/com.apps.dp-2wjpiDlhe60_b_F7OtfpaQ==/split_lib_dependencies_apk.apk!classes2.dex)
at com.google.firebase.Timestamp.zza(SourceFile:136)
at com.google.firebase.Timestamp.<init>(SourceFile:47)
at com.google.firebase.firestore.d.zzm.<clinit>(SourceFile:12)
at com.google.firebase.firestore.c.zzav.<init>(SourceFile:24)
at com.google.firebase.firestore.c.zzat.zzb(SourceFile:104)
at com.google.firebase.firestore.c.zzi.<init>(SourceFile:125)
at com.google.firebase.firestore.b.zzf.zza(SourceFile:1215)
at com.google.firebase.firestore.b.zzh.run(Unknown Source:8)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at com.google.firebase.firestore.g.zza$zza.run(SourceFile:190)
at java.lang.Thread.run(Thread.java:764)
07-26 09:56:29.396 25793-25793/com.apps.dp E/UncaughtException:
java.lang.RuntimeException: Internal error in Firestore (0.6.6-dev).
at com.google.firebase.firestore.g.zza.zzb(SourceFile:324)
at com.google.firebase.firestore.g.zzd.run(Unknown Source:2)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.NoSuchMethodError: No static method checkArgument(ZLjava/lang/String;I)V in class Lcom/google/common/base/Preconditions; or its super classes (declaration of 'com.google.common.base.Preconditions' appears in /data/app/com.apps.dp-2wjpiDlhe60_b_F7OtfpaQ==/split_lib_dependencies_apk.apk!classes2.dex)
at com.google.firebase.Timestamp.zza(SourceFile:136)
at com.google.firebase.Timestamp.<init>(SourceFile:47)
at com.google.firebase.firestore.d.zzm.<clinit>(SourceFile:12)
at com.google.firebase.firestore.c.zzav.<init>(SourceFile:24)
at com.google.firebase.firestore.c.zzat.zzb(SourceFile:104)
at com.google.firebase.firestore.c.zzi.<init>(SourceFile:125)
at com.google.firebase.firestore.b.zzf.zza(SourceFile:1215)
at com.google.firebase.firestore.b.zzh.run(Unknown Source:8)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at com.google.firebase.firestore.g.zza$zza.run(SourceFile:190)
at java.lang.Thread.run(Thread.java:764)
实现(“com.google.firebase:firebase-firestore:17.0.3”){
排除组:“com.google.guava”
}
java.lang.RuntimeException:Firestore(0.6.6-dev)中的内部错误。
位于com.google.firebase.firestore.g.zza.zzb(源文件:324)
访问com.google.firebase.firestore.g.zzd.run(未知来源:2)
位于android.os.Handler.handleCallback(Handler.java:790)
位于android.os.Handler.dispatchMessage(Handler.java:99)
位于android.os.Looper.loop(Looper.java:164)
位于android.app.ActivityThread.main(ActivityThread.java:6494)
位于java.lang.reflect.Method.invoke(本机方法)
位于com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
原因:java.lang.NoSuchMethodError:Lcom/google/common/base/Premissions类中没有静态方法checkArgument(ZLjava/lang/String;I)V;或者它的超类(声明'com.google.common.base.premissions'出现在/data/app/com.apps.dp-2wjpiDlhe60_b_f7; otfpaq==/split_lib_dependencies_apk.apk!classes2.dex中)
位于com.google.firebase.Timestamp.zza(源文件:136)
位于com.google.firebase.Timestamp。(源文件:47)
请访问com.google.firebase.firestore.d.zzm。(源文件:12)
在com.google.firebase.firestore.c.zzav(源文件:24)
位于com.google.firebase.firestore.c.zzat.zzb(源文件:104)
网址:com.google.firebase.firestore.c.zzi。(源文件:125)
访问com.google.firebase.firestore.b.zzf.zza(源文件:1215)
访问com.google.firebase.firestore.b.zzh.run(未知来源:8)
位于java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457)
在java.util.concurrent.FutureTask.run(FutureTask.java:266)处
位于java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
位于java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
位于java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
位于com.google.firebase.firestore.g.zza$zza.run(源文件:190)
运行(Thread.java:764)
07-26 09:56:29.396 25793-25793/com.apps.dp E/UncaughtException:
java.lang.RuntimeException:Firestore(0.6.6-dev)中的内部错误。
位于com.google.firebase.firestore.g.zza.zzb(源文件:324)
访问com.google.firebase.firestore.g.zzd.run(未知来源:2)
位于android.os.Handler.handleCallback(Handler.java:790)
位于android.os.Handler.dispatchMessage(Handler.java:99)
位于android.os.Looper.loop(Looper.java:164)
位于android.app.ActivityThread.main(ActivityThread.java:6494)
位于java.lang.reflect.Method.invoke(本机方法)
位于com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
原因:java.lang.NoSuchMethodError:Lcom/google/common/base/Premissions类中没有静态方法checkArgument(ZLjava/lang/String;I)V;或者它的超类(声明'com.google.common.base.premissions'出现在/data/app/com.apps.dp-2wjpiDlhe60_b_f7; otfpaq==/split_lib_dependencies_apk.apk!classes2.dex中)
位于com.google.firebase.Timestamp.zza(源文件:136)
位于com.google.firebase.Timestamp。(源文件:47)
请访问com.google.firebase.firestore.d.zzm。(源文件:12)
在com.google.firebase.firestore.c.zzav(源文件:24)
位于com.google.firebase.firestore.c.zzat.zzb(源文件:104)
网址:com.google.firebase.firestore.c.zzi。(源文件:125)
访问com.google.firebase.firestore.b.zzf.zza(源文件:1215)
访问com.google.firebase.firestore.b.zzh.run(未知来源:8)
位于java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:457)
在java.util.concurrent.FutureTask.run(FutureTask.java:266)处
位于java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
位于java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
位于java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
位于com.google.firebase.firestore.g.zza$zza.run(源文件:190)
运行(Thread.java:764)
在过去的6个小时里,我一直在努力解决这个问题。我能在这方面得到一些帮助吗。我还有一个问题,是否可以在android中使用
Firestore
APi从文件夹中获取所有图像URL。或者我先在Firebase数据库中保存这些URL?已经查看了一些关于此的帖子,这些帖子说这是不可能的。根据您上次的评论,请注意,为了检索托管在中的文件夹中的所有文档,您需要知道路径或下载URL
。在不知道的情况下,无法简单地从文件夹中获取所有文件
为了解决这个问题,我建议在上传任何文件时,将下载URL
存储到类似或新的数据库中。请参阅下面一个获取下载URL
的简单示例
storageRef.child("YourFolderName").getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
// Got the download URL for "YourFolderName/YourFile.pdf"
// Add it to your database
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
// Handle any errors
}
});
storageRef.child(“YourFolderName”).getDownloadUrl().addOnSuccessListener(新OnSuccessL