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我做了一個簡單的應用程序用戶註冊在firebase中。兩個editText用於獲取用戶的電子郵件和密碼以及用於註冊的按鈕我已經添加了一個擴展Application的類來初始化默認的firebaseApp，所有的代碼都在下面添加，幫助我對這個錯誤進行排序。我不斷收到「java.lang.IllegalArgumentException：給定字符串爲空或空」，它與auth = FirebaseAuth.getInstance（）;「
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
EditText ed_email, ed_pass;
Button but_signup;
ProgressBar progressBar;
FirebaseAuth auth;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//FirebaseApp.initializeApp(getApplicationContext());
//Get Firebase auth instance
auth = FirebaseAuth.getInstance();
but_signup = (Button) findViewById(R.id.but_login);
ed_email = (EditText) findViewById(R.id.ed_email);
ed_pass = (EditText) findViewById(R.id.ed_pass);
but_signup.setOnClickListener(this);
}
@Override
protected void onResume() {
super.onResume();
}
@Override
public void onClick(View v) {
String email = ed_email.getText().toString().trim();
String password = ed_pass.getText().toString().trim();
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(), "Enter email address!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(), "Enter password!", Toast.LENGTH_SHORT).show();
return;
}
if (password.length() < 6) {
Toast.makeText(getApplicationContext(), "Password too short, enter minimum 6 characters!", Toast.LENGTH_SHORT).show();
return;
}
//create user
auth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(MainActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Toast.makeText(MainActivity.this, "createUserWithEmail:onComplete:" + task.isSuccessful(), Toast.LENGTH_SHORT).show();
if (!task.isSuccessful()) {
Toast.makeText(MainActivity.this, "Authentication failed." + task.getException(),
Toast.LENGTH_SHORT).show();
} else {
startActivity(new Intent(MainActivity.this, MainActivity.class));
finish();
}
}
});
}
}
FireApp.java
public class FireApp extends Application {
@Override
public void onCreate() {
super.onCreate();
FirebaseApp.initializeApp(getApplicationContext());
}}
logcat的
FATAL EXCEPTION: main
Process: com.skapsdevelopment.firebase, PID: 13582
Theme: themes:{default=overlay:com.resurrectionremix.pitchblack, iconPack:com.baranovgroup.nstyle, fontPkg:com.resurrectionremix.pitchblack, com.android.systemui=overlay:com.resurrectionremix.pitchblack, com.android.systemui.navbar=overlay:com.resurrectionremix.pitchblack}
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.skapsdevelopment.firebase/com.skapsdevelopment.firebase.MainActivity}: java.lang.IllegalArgumentException: Given String is empty or null
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2450)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
Caused by: java.lang.IllegalArgumentException: Given String is empty or null
at com.google.android.gms.common.internal.zzac.zzhz(Unknown Source)
at com.google.android.gms.internal.zzagt$zza$zza.<init>(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.zzb(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.<init>(Unknown Source)
at com.google.android.gms.internal.zzahe.<init>(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.zzd(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.zzc(Unknown Source)
at com.google.firebase.auth.FirebaseAuth.getInstance(Unknown Source)
at com.skapsdevelopment.firebase.MainActivity.onCreate(MainActivity.java:36)
at android.app.Activity.performCreate(Activity.java:6251)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2403)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
請幫我解決這個錯誤。
將應用程序類添加到清單。使用'this'而不是'getApplicationContext' –
我已經在Manifest文件中添加了這個。 –