如何使用数据绑定在android中动态设置图像视图的图像资源

Question

有人能让我知道使用数据绑定在图像视图中填充图像资源的正确用法吗

Answer 1

您可以这样使用它：

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_padding="20dp"
    android:scaleType="centerInside"
    android:src="@{model.isActive ? @drawable/activated_icon :@drawable/non_activated_icon}"/>

更多信息可以在这里和这里找到。

Answer 2

你可以参考这个：

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
        }
    )
}

步骤：2

您可以使用图像视图中的来根据输入加载动态图像，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" />