Question

我有Profile类，用户输入他的姓名和电子邮件。但每当我打开应用程序时，它会要求用户输入名称。如何跳过这个并让它只向用户显示一次。我可以使用if username != null方法，但每次用户打开应用程序时，它都会从数据库中获取数据，这会使应用程序变慢。那么如何让应用程序仅在第一次显示配置文件活动时，从第二次开始直接进入主屏幕。

请帮助......提前致谢

      protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.setup_profile);
    storage = FirebaseStorage.getInstance().getReference();
    progress = new ProgressDialog(this);

    input_name = (EditText) findViewById(R.id.name);
    input_email = (EditText) findViewById(R.id.email);
    input_status = (EditText) findViewById(R.id.status);
    input_quote = (EditText) findViewById(R.id.quote);
    input_ph = (EditText) findViewById(R.id.field_phone_number);
    imageView = (ImageView) findViewById(R.id.imageView);
    addData = (Button) findViewById(R.id.save);

    SharedPreferences sp = getSharedPreferences("com.your.package", Context.MODE_PRIVATE);

    boolean hasUsername = sp.getBoolean("has_username", false);

    if (hasUsername) { //checks if the user already input username to skip this activity
        Intent intent = new Intent(SetUpProfile.this, HomeScreen.class);
        startActivity(intent);
        finish();
    }

    FirebaseUser user= FirebaseAuth.getInstance().getCurrentUser();
    final DatabaseReference ref = FirebaseDatabase.getInstance().getReference().child("Users").child(user.getPhoneNumber());



    addData.setOnClickListener(new View.OnClickListener()
    {
        @Override
        public void onClick(View view)
        {
            SetUpProfileHelper user;
            user = new SetUpProfileHelper(input_name.getText().toString(), input_email.getText().toString(), input_status.getText().toString(), input_quote.getText().toString());
            ref.child("Name").setValue(input_name.getText().toString());
            ref.child("Email").setValue(input_email.getText().toString());
            ref.child("Status").setValue(input_status.getText().toString());
            ref.child("Quote").setValue(input_quote.getText().toString()).addOnCompleteListener(new OnCompleteListener<Void>() {
                @Override
                public void onComplete(@NonNull Task<Void> task) {
                    if (task.isSuccessful())
                    {
                        Toast.makeText(getApplicationContext(),"Profile Successfully Updated",Toast.LENGTH_SHORT).show();
                        startActivity(new Intent(SetUpProfile.this, HomeScreen.class));
                        finish();
                    }
                }
            });
            SharedPreferences sp = getSharedPreferences("com.appmaster.akash.messageplus", Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = sp.edit();

            editor.putBoolean("has_username", true); //save that the user enters username

            editor.apply();
        }
    });

Answer 1

您可以使用共享偏好设置。

输入用户名后，当用户点击下一个按钮时，请调用：

SharedPreferences sp = context.getSharedPreferences("com.your.package", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();

editor.putBoolean("has_username", true); //save that the user enters username

editor.apply();

在ProfileActivity onCreate()：

上

SharedPreferences sp = context.getSharedPreferences("com.your.package", Context.MODE_PRIVATE);

boolean hasUsername = sp.getBoolean("has_username", false);

if (hasUsername) { //checks if the user already input username to skip this activity
   Intent intent = new Intent(ProfileActivity.this, YourNextActivity.class);
   startActivity(intent);
   finish();
}

Answer 2

您可以使用共享首选项来存储布尔值。用户登录后更改布尔状态，下次在执行代码之前检查该布尔值

如何跳过signUp活动并进入android

2 个答案: