Question

当我启动我的应用的登录活动时，它会出现应出现的内容，但文本框除外，它们没有可见的提示。此外，当用户键入文本框时，文本是不可见的（可能与文本框的背景颜色相同）

继承我的onCreate（）：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);

    // Start the authentication UI
    AuthUIConfiguration config = new AuthUIConfiguration.Builder()
            .userPools(true)
            .backgroundColor(Color.rgb(0x36, 0x89, 0x56))
            .isBackgroundColorFullScreen(true)
            .build();
    SignInActivity.startSignInActivity(this, config);
    LoginActivity.this.finish();

    final IdentityManager identityManager = AWSProvider.getInstance().getIdentityManager();
    // Set up the callbacks to handle the authentication response
    identityManager.login(this, new DefaultSignInResultHandler() {
        @Override
        public void onSuccess(Activity activity, IdentityProvider identityProvider) {
            Toast.makeText(LoginActivity.this,
                    String.format("Logged in as %s", identityManager.getCachedUserID()),
                    Toast.LENGTH_LONG).show();
            // Go to the main activity
            final Intent intent = new Intent(activity, RangingActivity.class)
                    .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            activity.startActivity(intent);
            activity.finish();
        }

        @Override
        public boolean onCancel(Activity activity) {
            return false;
        }
    });
}

以下是我参与活动所需的资源：

https://docs.aws.amazon.com/aws-mobile/latest/developerguide/add-aws-mobile-user-sign-in.html https://docs.aws.amazon.com/aws-mobile/latest/developerguide/add-aws-mobile-user-sign-in-customize.html

由于

Cognito中的身份验证UI中的文本框提示和文本不可见

0 个答案: