android - 如何使用数据绑定(bind)在android中动态设置 ImageView 的图像资源

Question

有人可以让我知道使用数据绑定(bind)在 ImageView 中填充图像资源的正确用法吗

Answer 1

你可以引用这个:
步骤1
在这样的文件中创建一个方法

@BindingAdapter("set_expense_category_image")
fun ImageView.setImageResource(expenseCategory: String) {
    this.setImageResource(
        when (expenseCategory) {
            ExpenseTypes.FOOD.expenseLitral -> R.drawable.ic_baseline_fastfood_24
            ExpenseTypes.SHOPPING.expenseLitral -> R.drawable.ic_baseline_shopping_basket_24
            ExpenseTypes.GYM.expenseLitral -> R.drawable.ic_baseline_accessibility_new_24
            ExpenseTypes.MEDICAL.expenseLitral -> R.drawable.ic_baseline_medical_services_24
            ExpenseTypes.HOUSE_RENT.expenseLitral -> R.drawable.ic_baseline_house_24
            ExpenseTypes.TRAVEL.expenseLitral -> R.drawable.ic_baseline_emoji_transportation_24
            ExpenseTypes.FREE_HAND_MONEY.expenseLitral -> R.drawable.ic_outline_money_24
            ExpenseTypes.INVESTING.expenseLitral -> R.drawable.ic_baseline_monetization_on_24
            ExpenseTypes.MONTHLY_EMI.expenseLitral -> R.drawable.ic_baseline_payments_24
            ExpenseTypes.MISCELLANEOUS.expenseLitral -> R.drawable.ic_baseline_kitesurfing_24
            else -> R.drawable.ic_baseline_supervisor_account_24
        }
    )
}

第2步
您可以在 ImageView 中使用基于输入加载动态图像，请参阅以下内容:

<ImageView
            android:id="@+id/imageView4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
             set_expense_category_image="@{expense.expenseCategoryName}"
            app:layout_constraintBottom_toTopOf="@+id/view"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/imageView5"
            app:srcCompat="@drawable/ic_baseline_fastfood_24" />