我是Android的初学者,但我的问题需要对UI而非编程有所了解。我有一个xml代码,我有他们的一些看法,但是对于这个问题,只有两个组件是相关的。该组件是ScrollView“父亲”,只有一个“儿子”,它是TextView。在ScrollView中设置padding时,如果TextView内部的文本很长,则TextView的第一行会被截断(尽管我正在使用填充)。 但是另一方面,当使用margin_layout时,文本看起来很好。我对margin和padding之间的区别了解很多,据我了解,在father内设置padding所产生的影响应与在内部设置margin产生相同的影响。儿子。我强调我只使用一个儿子。带边距的代码(文本可以使用的地方):
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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:background="@color/colorPrimary"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="76dp"
android:layout_marginEnd="8dp"
android:fontFamily="@font/chewy"
android:text="@string/title"
android:textSize="36sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v7.widget.CardView
android:id="@+id/cardView"
android:layout_width="300dp"
android:layout_height="80dp"
android:layout_marginStart="8dp"
android:layout_marginTop="68dp"
android:layout_marginEnd="8dp"
app:cardCornerRadius="5dp"
app:cardElevation="7dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="@+id/question_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_margin="8dp"
android:text="Hello There this is where we are going to add something..."
android:textSize="18sp" />
</ScrollView>
</android.support.v7.widget.CardView>
<Button
android:id="@+id/true_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="48dp"
android:layout_marginTop="8dp"
android:background="@color/colorAccent"
android:text="@string/true_title"
app:layout_constraintStart_toEndOf="@+id/prev_button"
app:layout_constraintTop_toBottomOf="@+id/cardView" />
<Button
android:id="@+id/false_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="@color/colorAccent"
android:text="@string/false_title"
app:layout_constraintEnd_toStartOf="@+id/next_button"
app:layout_constraintStart_toEndOf="@+id/true_button"
app:layout_constraintTop_toBottomOf="@+id/cardView" />
<ImageButton
android:id="@+id/prev_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:background="@color/colorAccent"
android:contentDescription="@string/previous_button"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/cardView"
app:srcCompat="@android:drawable/ic_media_previous" />
<ImageButton
android:id="@+id/next_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="@color/colorAccent"
android:contentDescription="@string/next_button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/cardView"
app:srcCompat="@android:drawable/ic_media_next" />
<TextView
android:id="@+id/counter_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:fontFamily="@font/chewy"
android:text="@string/counter_questions"
app:layout_constraintBottom_toTopOf="@+id/cardView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView" />
</android.support.constraint.ConstraintLayout>
带填充的代码(第一行被截断)
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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:background="@color/colorPrimary"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="76dp"
android:layout_marginEnd="8dp"
android:fontFamily="@font/chewy"
android:text="@string/title"
android:textSize="36sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v7.widget.CardView
android:id="@+id/cardView"
android:layout_width="300dp"
android:layout_height="80dp"
android:layout_marginStart="8dp"
android:layout_marginTop="68dp"
android:layout_marginEnd="8dp"
app:cardCornerRadius="5dp"
app:cardElevation="7dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="8dp"
>
<TextView
android:id="@+id/question_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="Hello There this is where we are going to add something..."
android:textSize="18sp" />
</ScrollView>
</android.support.v7.widget.CardView>
<Button
android:id="@+id/true_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="48dp"
android:layout_marginTop="8dp"
android:background="@color/colorAccent"
android:text="@string/true_title"
app:layout_constraintStart_toEndOf="@+id/prev_button"
app:layout_constraintTop_toBottomOf="@+id/cardView" />
<Button
android:id="@+id/false_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="@color/colorAccent"
android:text="@string/false_title"
app:layout_constraintEnd_toStartOf="@+id/next_button"
app:layout_constraintStart_toEndOf="@+id/true_button"
app:layout_constraintTop_toBottomOf="@+id/cardView" />
<ImageButton
android:id="@+id/prev_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:background="@color/colorAccent"
android:contentDescription="@string/previous_button"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/cardView"
app:srcCompat="@android:drawable/ic_media_previous" />
<ImageButton
android:id="@+id/next_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:background="@color/colorAccent"
android:contentDescription="@string/next_button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/cardView"
app:srcCompat="@android:drawable/ic_media_next" />
<TextView
android:id="@+id/counter_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:fontFamily="@font/chewy"
android:text="@string/counter_questions"
app:layout_constraintBottom_toTopOf="@+id/cardView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView" />
</android.support.constraint.ConstraintLayout>
此外,与在ScrollView中添加填充相比,在CardLayout中填充填充会变得更薄。>
有人可以向我解释原因吗?
我是Android的初学者,但我的问题需要对UI而非编程有所了解。我有一个xml代码,我有他们的一些看法,但是对于这个问题,只有两个组件是...
似乎差异与ScrollView