我正在尝试在firebase数据库中保存textview的内容,但是当我按下必须执行此操作的按钮时,它不会执行操作,但应用程序不会停止或任何事情。
这是我的代码
XML
<TextView
android:id="@+id/emailTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/nameTextView"
android:layout_marginTop="16dp"
android:text="@string/app_name"
android:textAlignment="center"
android:textSize="16sp" />
爪哇
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_terminos);
// Mostramos el webview
WebView myWebView = (WebView) findViewById(R.id.terminos);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.setWebViewClient(new WebViewClient());
myWebView.loadUrl("http://zxxxxxxxxx.saq.es");
// Boton pulsado
// Insertamos datos en la base de datos
userEmail = (TextView) findViewById(emailTextView);
btacepto = (Button) findViewById(R.id.cambiarhome);
btacepto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Firebase ref = new Firebase("https://payads-2c114.firebaseio.com/users");
String enteredUserEmail = userEmail.getText().toString();
ref.child("users").setValue(enteredUserEmail);
}
});
}
}
错误
09-08 16:35:19.790 5341-5341/albertonio.payads E/AndroidRuntime: FATAL EXCEPTION: main
Process: albertonio.payads, PID: 5341
java.lang.RuntimeException: You need to set the Android context using Firebase.setAndroidContext() before using Firebase.
at com.firebase.client.core.Context.getPlatform(Context.java:45)
at com.firebase.client.core.Context.ensureLogger(Context.java:218)
at com.firebase.client.core.Context.initServices(Context.java:105)
at com.firebase.client.core.Context.freeze(Context.java:92)
at com.firebase.client.core.RepoManager.getLocalRepo(RepoManager.java:55)
at com.firebase.client.core.RepoManager.getRepo(RepoManager.java:19)
at com.firebase.client.Firebase.<init>(Firebase.java:172)
at com.firebase.client.Firebase.<init>(Firebase.java:177)
at com.firebase.client.Firebase.<init>(Firebase.java:155)
at albertonio.payads.TerminosActivity$1.onClick(TerminosActivity.java:48)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
第48行:Firebase ref = new Firebase("https://payads-2c114.firebaseio.com");
当代码在metod Onclick
中时,我在Android Monitor中播放此错误我改变了
Firebase ref = new Firebase("https://payads-2c114.firebaseio.com/users");
String enteredUserEmail = userEmail.getText().toString();
ref.child("users").setValue(enteredUserEmail);
到
DatabaseReference databaseRef = FirebaseDatabase.getInstance().getReference(); databaseRef.child("users").setValue(enteredUserEmail);
现在当我按下按钮时节点用户的所有日期都被删除但是你没有写出我想要的东西
答案 0 :(得分:0)
我建议改用FirebaseDatabaseReference
DatabaseReference databaseRef = FirebaseDatabase.getInstance().getReference();
databaseRef.child("users").setValue(enteredUserEmail);
这样你可以绕过硬编码的东西,如果firebase设置正确,它应该可以正常工作
还要记住这些在你的gradle中(模块:应用程序)
compile 'com.google.firebase:firebase-core:11.0.4'
compile 'com.google.firebase:firebase-database:11.0.4'
看起来你的btnClickListener出现了什么问题?
btacepto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Firebase ref = new Firebase("https://payads-2c114.firebaseio.com/users");
String enteredUserEmail = userEmail.getText().toString();
ref.child("users").setValue(enteredUserEmail);
}
});
将其移至onCreate()。
删除周围的public void btn(View view) {}
。
尝试添加Firebase.setAndroidContext(this);
onCreate()
答案 1 :(得分:0)
正如我们在Firebase Quickstart Documentation中看到的那样:
必须使用Android上下文初始化Firebase库一次。这必须在创建或使用任何Firebase参考之前发生。
您的活动类应如下所示:
Try Using this
<div class = "row">
<div class = "col-sm-6">
<div class = "col-sm-12">
Your Content
</div>
</div>
<div class = "col-sm-6">
<div class = "col-sm-12">
Your Content
</div>
</div>
</div>