因此我目前正在处理自定义卡片视图，我的目标非常简单。我想将文本字段更新为在自定义卡片视图xml中设置的字符串。
但是经过数小时的尝试，我不知何故无法正常工作。有时编辑器不会使用自定义卡片视图加载我的xml ...有时它会给我一个非常长的错误消息...有时它会保持黑色...
因此，我有以下xml文件：
<LinearLayout 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:id="@+id/CallEntry_Holder"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:tag="0">
<com.test.larsmatthaus.projectnurser.customs.Custom_CardView
android:id="@+id/Call_Entry"
android:layout_width="match_parent"
android:layout_height="50dp"
app:cardBackgroundColor="@color/colorCardBackgroundR"
app:cardCornerRadius="5dp"
app:personName="test"
app:room="100"
app:ward="test"
tools:layout_editor_absoluteX="1024dp">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:id="@+id/WardName"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="10dp"
android:layout_marginEnd="200dp"
android:layout_marginLeft="200dp"
android:layout_marginRight="200dp"
android:layout_marginStart="200dp"
android:layout_marginTop="10dp"
android:autoSizeTextType="uniform"
android:fontFamily="@font/comfortaa_light"
android:gravity="center"
android:text="Louisa Burgess"
android:textColor="@color/colorOverlayTC"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/icon_2"
android:layout_width="31dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/icon_1"
app:layout_constraintHorizontal_bias="0.85"
app:layout_constraintStart_toEndOf="@+id/WardName"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/teddybear" />
<ImageView
android:id="@+id/icon_1"
android:layout_width="31dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.95"
app:layout_constraintStart_toEndOf="@+id/WardName"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/bed" />
<TextView
android:id="@+id/RoomText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="8dp"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:autoSizeTextType="uniform"
android:fontFamily="@font/comfortaa_light"
android:gravity="center"
android:text="105"
android:textColor="@color/colorOverlayTC"
android:textSize="24sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/WardName"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/seperator_C"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:fontFamily="@font/comfortaa_light"
android:text="/"
android:textColor="@color/colorOverlayTC"
android:textSize="24sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="@+id/RoomText"
app:layout_constraintEnd_toStartOf="@+id/WardName"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toEndOf="@+id/RoomText"
app:layout_constraintTop_toTopOf="@+id/RoomText" />
<TextView
android:id="@+id/WardText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:fontFamily="@font/anaheim"
android:gravity="center"
android:text="Ward 2"
android:textColor="@color/colorOverlayTC"
android:textSize="18sp"
app:layout_constraintBottom_toBottomOf="@+id/seperator_C"
app:layout_constraintEnd_toStartOf="@+id/WardName"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toEndOf="@+id/seperator_C"
app:layout_constraintTop_toTopOf="@+id/seperator_C" />
</android.support.constraint.ConstraintLayout>
</com.test.larsmatthaus.projectnurser.customs.Custom_CardView>
它仅包含一个卡视图条目。
我的自定义卡片视图类如下：
public class Custom_CardView{
public Context context;
public Map<Integer, Object> vars = new HashMap<Integer, Object>();
public Custom_CardView(@NonNull Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
this.context = context;
setWillNotDraw(false);
View view = getRootView();
for(int index = 0; index<((ViewGroup)view).getChildCount(); ++index) {
View nextChild = ((ViewGroup)view).getChildAt(index);
vars.put(nextChild.getId(), nextChild);
}
Log.println(Log.DEBUG,"Custom_CardView","<Custom_CardView : Instantiated => ["+vars.size()+"] children>");
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.elements_call_entry, this, true);
TextView wardText = (TextView) findViewById(R.id.WardName);
wardText.setText("TEST");
}
protected void onDraw(Canvas canvas){
super.onDraw(canvas);
}
}
我想将TextView“ wardName”更新为我在xml文件中设置的属性值...
但是一旦加载，编辑器视图就会崩溃...由于Custom CardView类...没有真正的错误日志...
我唯一收到的消息是：预览版式在渲染布局时超时。当其中一个自定义视图中存在无限循环或无限递归时，通常会发生这种情况
我忘记了什么？我还能尝试什么修改编辑器的textview？
答案 0 :(得分：0)
这很容易...只是添加了一个新的布局活动，该活动将在按下CardView后膨胀。我只是复制CardView元素并将其放置在膨胀视图内=>问题已解决:)