1
嗨使用数据绑定不是要求我有这个layout，我试图打电话登录从layout上点击viewmodel功能上button，但他并没有叫。登录方法采用的是Android
有谁知道最新的问题？如何解决它？
activity_login.xml
<layout>
<data>
<variable
name="loginViewModel"
type="com.app.android.login.LoginViewModel" />
</data>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
tools:context="com.app.android.login.LoginActivity"
tools:ignore="missingPrefix">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="@dimen/default_view_margin_bottom_8dp">
<android.support.design.widget.TextInputLayout
android:id="@+id/til_login_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/default_view_margin_right_8dp"
android:layout_marginStart="@dimen/default_view_margin_left_8dp"
android:textColorHint="@color/colorSecondaryText"
app:hintTextAppearance="@style/AppTheme.InputLayoutStyle"
app:layout_constraintBottom_toTopOf="@+id/til_login_password"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/login_email"
android:imeOptions="actionNext"
android:singleLine="true"
android:text="@={loginViewModel.email}"
android:textColor="@color/colorPrimaryText" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="@+id/til_login_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/default_view_margin_right_8dp"
android:layout_marginStart="@dimen/default_view_margin_left_8dp"
android:textColorHint="@color/colorSecondaryText"
app:hintTextAppearance="@style/AppTheme.InputLayoutStyle"
app:layout_constraintBottom_toTopOf="@+id/btn_login_login"
app:layout_constraintTop_toBottomOf="@+id/til_login_email"
app:layout_constraintVertical_chainStyle="packed">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/login_password"
android:imeOptions="actionDone"
android:singleLine="true"
android:text="@={loginViewModel.password}"
android:textColor="@color/colorPrimaryText" />
</android.support.design.widget.TextInputLayout>
<Button
android:id="@+id/btn_login_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/default_view_margin_right_8dp"
android:layout_marginStart="@dimen/default_view_margin_left_8dp"
android:layout_marginTop="48dp"
android:onClick="@{loginViewModel.login}"
android:text="@string/login_btn_text"
android:textColor="@color/colorWhite"
app:layout_constraintBottom_toTopOf="@+id/textview_login_forgot_password"
app:layout_constraintTop_toBottomOf="@+id/til_login_password"
app:layout_constraintVertical_chainStyle="packed" />
<TextView
android:id="@+id/textview_login_forgot_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/default_view_margin_right_8dp"
android:layout_marginStart="@dimen/default_view_margin_left_8dp"
android:layout_marginTop="36dp"
android:gravity="center"
android:text="@string/login_forgot_password"
app:layout_constraintBottom_toTopOf="@+id/btn_login_register"
app:layout_constraintTop_toBottomOf="@+id/btn_login_login"
app:layout_constraintVertical_chainStyle="packed" />
<Button
android:id="@+id/btn_login_register"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/default_view_margin_right_8dp"
android:layout_marginStart="@dimen/default_view_margin_left_8dp"
android:text="@string/login_sign_up"
android:textColor="@color/colorWhite"
app:layout_constraintBottom_toBottomOf="parent" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
</layout>
LoginActivity.kt
class LoginActivity : BaseActivity(), LoginNavigator {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val activityLoginBinding: ActivityLoginBinding = DataBindingUtil.setContentView<ActivityLoginBinding>(this, R.layout.activity_login)
}
override fun startHomeActivity() {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
}
override fun startRegistrationActivity() {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
}
override fun startForgotPasswordActivity() {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
}
override fun handleError(throwable: Throwable) {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
}
}
LoginViewModel.kt
class LoginViewModel : AnkoLogger {
val email = ObservableField<String>()
val password = ObservableField<String>()
fun login(view: View) {
val viewVisibility: Int = view.visibility
info { viewVisibility }
info {
"${email} and ${password}"
}
}
/**
* Validate email and password. It checks email and password is empty or not
* and validate email address is correct or not
* @param email email address for login
* @param password password for login
* @return true if email and password pass all conditions else false
*/
fun isEmailAndPasswordValid(email: String, password: String): Boolean {
if (email.isEmpty()) return false
if (!Patterns.EMAIL_ADDRESS.matcher(email).matches()) return false
if (password.isEmpty()) return false
return true
}
}