这是我从一个 android 教程中粘贴的代码。但是我得到这3个错误?请帮忙
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="This is my first Android Application!" />
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="And this is a clickable button!" />
</LinearLayout>
Error: No resource found that matches the given name (at 'text' with value '@string/hello'). main.xml /Helloworld/res/layout line 6 Android AAPT Problem
[I18N] Hardcoded string "And this is a clickable button!", should use @string resource main.xml /Helloworld/res/layout line 17 Android Lint Problem
[I18N] Hardcoded string "This is my first Android Application!", should use @string resource main.xml /Helloworld/res/layout line 13 Android Lint Problem