当我尝试通过此代码在 firebase 数据库中添加/更新数据时，我的应用程序 ui 卡住并在 3-5 秒后重新启动。
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
String username = findViewById(R.id.editText).getText().toString();
DatabaseReference reference = FirebaseDatabase.getInstance().getReference().child("Users").child(username);
Map map = new HashMap();
map.put("name",user.getDisplayName());
map.put("userID",user.getUid());
map.put("photoUrl",user.getPhotoUrl());
reference.setValue(map).addOnCompleteListener(new OnCompleteListener() {
@Override
public void onComplete(@NonNull Task task) {
if(task.isSuccessful()){
Toast.makeText(context,"Ready to go",Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(context,"Something went wrong",Toast.LENGTH_SHORT).show();
}
}
});
logcat 中没有任何内容，但是当我将其设置为无过滤器时 这件事在 logcat 中不断重复，直到我从最近的应用程序中手动关闭该应用程序。我能够从 firebase 数据库中读取但无法写入。 firebase 实时数据库规则设置为测试模式
2019-06-13 12:04:52.578 712-712/? E/AndroidRuntime: at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
2019-06-13 12:04:52.579 712-712/? E/AndroidRuntime: at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
2019-06-13 12:04:52.579 712-712/? E/AndroidRuntime: at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.serialize(com.google.firebase:firebase-database@@17.0.0:167)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper.access$200(com.google.firebase:firebase-database@@17.0.0:47)
at com.google.firebase.database.core.utilities.encoding.CustomClassMapper$BeanMapper.serialize(com.google.firebase:firebase-database@@17.0.0:658)
最佳答案
user.getPhotoUrl() 根据this 返回Uri ，并根据 Basic write operations Uri 不是其中之一，
所以将您的 user.getPhotoUrl() 写成 String 并将其检索为 String ，怎么样？ here
关于java - 应用程序在更新 Firebase 数据库中的数据时重启，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56574049/