Android TextView意外填充
Android TextView意外填充,android,kotlin,textview,Android,Kotlin,Textview,RecyclerView显示简单项目。每个项目都有一个TextView内部FrameLayoutTextView没有任何填充,但在某些情况下它们会意外出现。下图显示,打开键盘后,填充立即出现。仅当文本包含换行符时,才会显示填充。如何修复它 MainActivity.kt class MainActivity : AppCompatActivity() { lateinit var adapter : MyAdapter override fun onCreate(savedI
RecyclerView
显示简单项目。每个项目都有一个TextView
内部FrameLayout
TextView
没有任何填充,但在某些情况下它们会意外出现。下图显示,打开键盘后,填充立即出现。仅当文本包含换行符时,才会显示填充。如何修复它
MainActivity.kt
class MainActivity : AppCompatActivity() {
lateinit var adapter : MyAdapter
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val recyclerView : RecyclerView = findViewById(R.id.recyclerView)
val button : Button = findViewById(R.id.button)
adapter = MyAdapter();
recyclerView.adapter = adapter;
button.setOnClickListener {
adapter.notifyDataSetChanged()
}
}
}
class MyViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
val textView: TextView;
init {
textView = view.findViewById(R.id.txt)
}
}
class MyAdapter : RecyclerView.Adapter<MyViewHolder>() {
private val data = listOf("Text without \\n ", "multiline\ntext")
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) =
MyViewHolder(LayoutInflater.from(parent.context)
.inflate(R.layout.list_item, parent, false))
override fun getItemCount() = data.size;
override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
holder.textView.text = data[position]
}
}
class MainActivity:AppCompatActivity(){
lateinit变量适配器:MyAdapter
重写创建时的乐趣(savedInstanceState:Bundle?){
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val recyclerView:recyclerView=findViewById(R.id.recyclerView)
val按钮:按钮=findViewById(R.id.button)
adapter=MyAdapter();
recyclerView.adapter=适配器;
button.setOnClickListener{
adapter.notifyDataSetChanged()
}
}
}
类MyViewHolder(val视图:视图):RecyclerView.ViewHolder(视图){
val textView:textView;
初始化{
textView=view.findViewById(R.id.txt)
}
}
类MyAdapter:RecyclerView.Adapter(){
private val data=listOf(“不带\\n的文本”,“多行\n文本”)
重写CreateViewHolder(父级:ViewGroup,viewType:Int)=
MyViewHolder(LayoutInflater.from(parent.context)
.充气(R.layout.list_项,父项,假))
覆盖getItemCount()=data.size;
覆盖onBindViewHolder(holder:MyViewHolder,位置:Int){
holder.textView.text=数据[位置]
}
}
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:background="@android:color/holo_blue_light"
android:id="@+id/txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</FrameLayout>
activity_main.xml
<?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:background="#ffffff"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:text="notifyDataSetChanged"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:id="@+id/button"
app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintStart_toStartOf="parent"
/>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="0dp"
android:layout_height="0dp"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
app:layout_constraintTop_toTopOf="parent" app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent" app:layout_constraintBottom_toTopOf="@+id/button"
android:id="@+id/recyclerView"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:ems="10"
android:id="@+id/editText"
app:layout_constraintStart_toEndOf="@+id/button" app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
您是否尝试了StringLayout的.trim()
方法是否有任何理由使用framelayout?是否可以在项目中使用约束布局,将文本视图的起始位置与父项对齐,并将宽度设置为0dp?您是否尝试过将.trim()
方法用于StringLayout有什么理由使用framelayout?是否可以在项目中使用约束布局,将文本视图的起始位置与父项对齐,并将宽度设置为0dp?