Question

我有以下代码以编程方式将一些视图添加到LinearLayout。但奇怪的是，只有1个视图成功添加。

感谢。

    View rootView = inflater.inflate(R.layout.line, container, false);

    LinearLayout view1 = (LinearLayout)rootView.findViewById(R.id.bg);

    view1.addView(new DrawView(x),1);
    DrawView k = new DrawView(x);
    k.setWidth();            
    view1.addView(k, 0);

    return rootView;

更新了xml布局文件

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@+id/bg"
    >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" />
    </LinearLayout>

更新了视图代码

class DrawView extends View {
Paint paint = new Paint();

public DrawView(Context context) {
    super(context);
    paint.setColor(Color.BLUE);     
}

void setWidth(){
    paint.setStrokeWidth(5);
}
@Override
public void onDraw(Canvas canvas) {
        canvas.drawLine(0, 0, 20, 20, paint);
        canvas.drawLine(20, 0, 0, 20, paint);
        canvas.drawLine(10, 10, 20, 20, paint);
        canvas.drawLine(0,50, 20, 20, paint);                        
}

Answer 1

您需要将LayoutParams添加到视图中以定义其大小。

无法向布局添加相同的视图

1 个答案: