如何获取我自动生成的firebase节点密钥?(How to get my automated generated firebase node key?)
在我的Android项目中,我想更新我的状态,但我无法获得我想要更新的自动密钥。
这是我在项目中使用的代码
String key = mGroupRef.child("users").push().getKey(); System.out.println("++key_____" +key);In my android project I want to update my status but I can't get the automated key which I want to update.
This is the code where I used in my project
String key = mGroupRef.child("users").push().getKey(); System.out.println("++key_____" +key);最满意答案
它可能会有所帮助。
创建一个模型class
public class Model { public String uid; public String getUid() { return uid; } public void setUid(String uid) { this.uid = uid; } }保存status
ArrayList<Model>list=new ArrayList<Model>(); Save.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Model model = new Model(); Firebase firebase=new Firebase("your firebase url"); String uid = firebase.child("order").push().getKey(); model.setUid(uid); list.add(model); FirebaseDatabase.getInstance().getReference().child("order").child(uid).child("status").setValue(value); Log.i("uid", uid); } });更新status 。
update.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { FirebaseDatabase.getInstance().getReference().child("order").child(list.get(position).getUid()).child("status").setValue(updated value); } });It may be helpful.
create a model class
public class Model { public String uid; public String getUid() { return uid; } public void setUid(String uid) { this.uid = uid; } }save status
ArrayList<Model>list=new ArrayList<Model>(); Save.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Model model = new Model(); Firebase firebase=new Firebase("your firebase url"); String uid = firebase.child("order").push().getKey(); model.setUid(uid); list.add(model); FirebaseDatabase.getInstance().getReference().child("order").child(uid).child("status").setValue(value); Log.i("uid", uid); } });update status.
update.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { FirebaseDatabase.getInstance().getReference().child("order").child(list.get(position).getUid()).child("status").setValue(updated value); } });更多推荐
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