Firebase权限被拒绝错误 [英] Firebase Permission denied Error
本文介绍了Firebase权限被拒绝错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
但是每次都会显示相同的错误。
W / SyncTree：在/ child失败时收听：FirebaseError：Permission denied
我的firebase规则
{
Condition：sunny，
child：5
}
我的AndroidManifest.xml
<？xml version =1.0encoding =utf-8？>
< manifest xmlns：android =http://schemas.android.com/apk/res/android
package =com.mohit.firebase>
<使用权限android：name =android.permission.INTERNET/>
应用程序$ b $ android：allowBackup =true
android：icon =@ mipmap / ic_launcher
android：label =@ string / app_name
android：supportsRtl =true
android：theme =@ style / AppTheme
>
< activity android：name =。MainActivity>
< intent-filter>
< category android：name =android.intent.category.LAUNCHER/>
< / intent-filter>
< / activity>
< / application>
< / manifest>
我的mainactivity.java
包com.mohit.firebase;
import android.support.v7.app.AppCompatActivity;
导入android.os.Bundle;
导入android.util.Log;
导入android.view.View;
导入android.widget.Button;
导入android.widget.TextView;
导入com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;
import com.firebase.client.ValueEventListener;
公共类MainActivity扩展AppCompatActivity {
TextView tv;
按钮bt1;
按钮bt2;
Firebase mRootRef;
@Override
protected void onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）;
setContentView（R.layout.activity_main）;
tv =（TextView）findViewById（R.id.button）;
bt1 =（Button）findViewById（R.id.button）;
bt2 =（Button）findViewById（R.id.button2）;
Firebase.setAndroidContext（this）;
mRootRef =新的Firebase（https://superb-flag-126719.firebaseio.com/）;
Log.d（fb，Firebase Object：+ String.valueOf（mRootRef））;
$ b @Override
protected void onStart（）{
super.onStart（）;
Firebase mchild = mRootRef.child（child）;
mchild.addValueEventListener（new ValueEventListener（）{
@Override
public void onDataChange（DataSnapshot dataSnapshot）{
String condition =（String）dataSnapshot.getValue（）;
Log.d（fb，String get：+ condition）;
tv.setText（condition）;
}
@Override
public void onCancelled（FirebaseError firebaseError）{
}）;
$ / code $ / pre
我的BuildGraddle
apply plugin：'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion23.0.2
defaultConfig {
applicationIdcom.mohit.firebase
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName1.0
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile（'proguard-android.txt'），'proguard-rules.pro'
}
}
packagingOptions {
不包括'META-INF / LICENSE'
不包括'META-INF / LICENSE-FIREBASE.txt'
'META-INF / NOTICE '
}
}
依赖关系{
编译fileTree（dir：'libs'，include：['* .jar']）
testCompile'junit：junit：4.12'
c ompile'com.android.support:appcompat-v7:23.1.1'
compile'com.firebase：firebase-client-android：2.5.2+'
}
我检查了我的firebase网址。这是完全正确的。
解决方案这是因为您没有授权到数据库，检查实时数据库中的规则选项卡
如果它是
{
rules：{
.read：auth！= null，
.write：auth！= null
}
}
这意味着只有经过授权的用户才能写入和读取数据。
更改为
{
rules：{
.read：true，
.write ：true
允许任何人编写数据库
在进行制作时，请务必使用第一个
I am Very beginner to firebase and trying to get value from my database.
but it showing me same error every time.
W/SyncTree: Listen at /child failed: FirebaseError: Permission denied
My firebase rules
{
"Condition" : "sunny",
"child" : 5
}
my Androidmanifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mohit.firebase" >
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme"
>
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
My mainactivity.java
package com.mohit.firebase;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;
import com.firebase.client.ValueEventListener;
public class MainActivity extends AppCompatActivity {
TextView tv;
Button bt1;
Button bt2;
Firebase mRootRef;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.button);
bt1 = (Button) findViewById(R.id.button);
bt2 = (Button) findViewById(R.id.button2);
Firebase.setAndroidContext(this);
mRootRef = new Firebase("https://superb-flag-126719.firebaseio.com/");
Log.d("fb","Firebase Object: " + String.valueOf(mRootRef));
}
@Override
protected void onStart() {
super.onStart();
Firebase mchild = mRootRef.child("child");
mchild.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String condition = (String) dataSnapshot.getValue();
Log.d("fb","String get: " + condition);
tv.setText(condition);
}
@Override
public void onCancelled(FirebaseError firebaseError) {
}
});
}
}
my BuildGraddle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.mohit.firebase"
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
packagingOptions {
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE-FIREBASE.txt'
exclude 'META-INF/NOTICE'
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.firebase:firebase-client-android:2.5.2+'
}
i checked my firebase url. It's Perfectly Correct.
解决方案 It's because you are not authorized to the Database, check the Rules Tab in the Realtime database
If it's
{
"rules": {
".read": "auth != null",
".write":"auth != null"
}
}
This means only authorized user's can write and read the Data.
Changing to
{
"rules": {
".read": true,
".write":true
}
}
Allows anyone to write the Database
When going for Production be sure to use the first one
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