Question

我想长按并选择一些文字，我可以在许多应用中看到它，但我对此没有任何想法。我正在寻找一些想法或一些例子？以下图片是我的目标。

Answer 1

不确定您要找的是什么。

如果您只是愿意让<TextView ... android:textIsSelectable="true"/> 选择，请确保它看起来像这样：

pennies = 10
nickels = 10
dimes = 10
quarters = 10

quarters_spent = 0
dimes_spent = 0
nickels_spent = 0
pennies_spent = 0

print("\nWelcome to change-making program.")
in_str = input("\nEnter the purchase price (xx.xx) or `q' to quit: ")

while in_str.lower() != 'q':
    dollar_str, cents_str = in_str.split(".")

    if in_str.lower() == 'q':
        quit()

    in_int = int(float(in_str) * 100)

    if in_int < 0:
        print("Error: purchase price must be non-negative.")
        in_str = input("\nEnter the purchase price (xx.xx) or `q' to quit: ")

    if in_int > 0:
        payment = input("\nInput dollars paid: ")
        payment_int = int(float(payment) * 100)
        change = payment_int - in_int

        #determines if there payment input
        if payment_int < in_int:
            print("Error: Insufficient payment.")
            payment = input("\nInput dollars paid: ")
            payment_int = int(float(payment) * 100)
            change = payment_int - in_int


        if change == 0:
            print("No change.")

        #determines how many quarters, dimes, nickels, and pennies are left
        while change >= 25 and quarters > 0:
            change = change - 25
            quarters_spent += 1
            quarters = quarters - quarters_spent

        while change >= 10 and dimes > 0:
            change = change - 10
            dimes_spent += 1
            dimes = dimes - dimes_spent

        while change >= 5 and nickels > 0:
            change = change - 5
            nickels_spent += 1
            nickels = nickels - nickels_spent

        while change >= 1 and pennies > 0:
            change = change - 1
            pennies_spent += 1
            pennies = pennies - pennies_spent



        if quarters == 0 and dimes == 0 and nickels == 0 and pennies == 0:
            print("Error: ran out of coins.")
            quit()

        print("\nCollect Payment Below:")
        if quarters_spent > 0:
            print(quarters_spent, "Quarters")
        if dimes_spent > 0:
            print(dimes_spent, "Dimes")
        if nickels_spent > 0:
            print(nickels_spent, "Nickels")
        if pennies_spent > 0:
            print(pennies_spent, "Pennies")

        print("\nStock: ", quarters, "Quarters, ", dimes, " Dimes, ", nickels, " Nickels, ", pennies, " Pennies ")

        in_str = input("\nEnter the purchase price (xx.xx) or `q' to quit: ")

        pennies = pennies
        nickels = nickels
        dimes = dimes
        quarters = quarters

已经回答了here。

但是，如果您要查找的是自定义文字选择操作，那么幸运的是，Ian Lake A GREAT TUTORIAL有this one这样做。

如果你是图书馆，你可以在 Github 上查看one。

您可能也会查看一些相关问题。如果是，请在 Stackoverflow 上查看此。

Answer 2

在xml文件中，添加以下内容：

android:textIsSelectable="true"

创建自定义文本选择操作

2 个答案: