问题描述
这似乎适用于 Android 6 Marshmallow 设备小米红米 3S.看起来像是模拟器的问题,但在任何其他意义上都不是真正的行为不端.
This seems to work on Android 6 Marshmallow device Xiaomi Redmi 3S.Seems like an emulator problem, but it isn't really misbehaving in any other sense.
我是 Android 开发的初学者,了解不多.我已确认我的应用通知已开启.
I am a beginner in Android development and don't know much.I have already confirmed that notifications for my app is ON.
规格:API 级别:Android 4.4 (KitKat)
Specs:API Level : Android 4.4 (KitKat)
Android Studio 版本:3.6.4
Android Studio version: 3.6.4
模拟器:Pixel XL API 28
Emulator: Pixel XL API 28
我试图做的只是弹出一条吐司消息,告诉我们按钮被点击了多少次.
All I attempted to do was a toast message would pop up telling how many times the button has been clicked.
这是 MainActivity.kt:
Here's the MainActivity.kt:
class MainActivity : AppCompatActivity() {
private var greetingCount = 0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
btnToastMessage.setOnClickListener {
val suffix = when (++greetingCount) {
1 -> "st"
2 -> "nd"
3 -> "rd"
else -> "th"
}
val greetingMsg = "Welcome for the $greetingCount$suffix time(s)!"
Toast.makeText(this@MainActivity, greetingMsg, Toast.LENGTH_LONG).show()
Log.i(".MainActivity", "Clicked Button")
}
}
}
这是 activity_main.xml 文件:
And here's the activity_main.xml file:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
tools:context=".MainActivity"
android:padding="30dp">
<TextView
android:id="@+id/txtHelloWorld"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.314" />
<Button
android:id="@+id/btnToastMessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click Me!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.49"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/txtHelloWorld"
app:layout_constraintVertical_bias="0.49" />
</androidx.constraintlayout.widget.ConstraintLayout>
推荐答案
不知道可以这样做,但擦除数据和冷启动设备修复了它.
Didn't know this could be done, but wiping data and cold-booting the device fixed it.
这篇关于Toast.show() 未在模拟器中显示消息的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!