Question

我正在尝试在非活动类中获取视图并将其转换为位图，这是我的尝试，但视图似乎有0作为维度。我的简单xml文件：

custom_view.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="70dp"
    android:layout_height="70dp"
    android:background="@drawable/pin_events"
    android:id="@+id/rel">

    <ImageView
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:scaleType="centerInside"
        android:src="@drawable/sport"
        android:layout_centerHorizontal="true"/>

</RelativeLayout>

这是我尝试获取位图：

LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflater.inflate(R.layout.custom_view, null);

RelativeLayout view = (RelativeLayout) v.findViewById(R.id.rel);
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();

Bitmap bm = view.getDrawingCache();

Answer 1

您可以尝试以下方法：

view.setDrawingCacheEnabled(true);

view.setLayoutParams(new ViewGroup.LayoutParams(0, 0));

view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
                MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());

view.buildDrawingCache(true);

Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());

view.setDrawingCacheEnabled(false); // clear drawing cache

在非Activity类中获取View并在Bitmap中将其转换

1 个答案: