我可以将数据保存到Firebase云存储中,但是每次我想从文档中检索数据时,都会遇到一些问题。
下面是我的代码。
private FirebaseFirestore db = FirebaseFirestore.getInstance();
private CollectionReference memRef = db.collection("Member");
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
nameinput = findViewById(R.id.name);
passwordinput = findViewById(R.id.password);
phoneinput = findViewById(R.id.phone);
getinfo = findViewById(R.id.getinfo);
}
public void insertAccount(View v){
String name = nameinput.getText().toString();
String password = passwordinput.getText().toString();
String phone = phoneinput.getText().toString();
Member account = new Member(name,password,phone);
memRef.add(account);
}
public void getAccount(View v){
memRef.get()
.addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
@Override
public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
String date = "";
for (QueryDocumentSnapshot documentSnapshot : queryDocumentSnapshots){
Member mem = documentSnapshot.toObject(Member.class);
String name = mem.getName();
String password = mem.getPassword();
String phone = mem.getPhone();
date += "name:" + name + "\npassword:" + password + "\nphone:" + phone + "\n\n" ;
}
getinfo.setText(date);
}
});
}
我的logcat显示。
2020-02-23 15:04:29.457 3154-3154 /? E / FirebaseInstanceId:失败 在后台启动服务:java.lang.IllegalStateException: 不允许启动服务意图{ act = com.google.firebase.INSTANCE_ID_EVENT pkg = com.google.android.apps.messaging cmp = com.google.android.apps.messaging / .fcm.BugleFirebaseInstanceIDService(有其他功能)}:应用程序位于后台uid UidRecord {3a2e8c3 u0a84 RCVR 空闲更改:未激活的处理次数:1 seq(0,0,0)} 2020-02-23 15:04:31.465 3314-3314 /? E / FirebaseInstanceId:在时无法启动服务 背景:java.lang.IllegalStateException:不允许启动 服务意图{act = com.google.firebase.INSTANCE_ID_EVENT pkg = com.google.android.gm cmp = com.google.android.gm / com.google.firebase.iid.FirebaseInstanceIdService (有其他功能)}:应用程序位于后台uid UidRecord {743aaeb u0a60 RCVR中 空闲更改:未缓存的处理次数:1 seq(0,0,0)} 2020-02-23 15:04:41.185 3723-3849 /? E / FirebaseInstanceId:令牌检索失败: INVALID_SENDER 2020-02-23 15:05:11.301 3723-3849 /? E / FirebaseInstanceId:令牌检索失败:INVALID_SENDER 2020-02-23 15:06:11.458 3723-3849 /? E / FirebaseInstanceId:令牌 检索失败:INVALID_SENDER 2020-02-23 15:08:11.590 3723-3849 /? E / FirebaseInstanceId:令牌检索失败:INVALID_SENDER