我正在尝试使用 svg-android 库将一张图片作为另一张图片的背景。当我在三星 Galaxy Nexus(4.3,Sprint)上查看图像时,背景图像不显示。当我在模拟器上查看它时,它是正确的。我什至删除了前景,这保持不变。以下是 XML 布局的关键部分:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<com.kd7uiy.hamfinder.SvgView
android:id="@+id/svgImage"
android:src="@raw/paper"
android:layout_alignLeft="@+id/scroll"
android:layout_alignRight="@id/scroll"
android:layout_alignTop="@id/scroll"
android:layout_above="@+id/buttons"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ScrollView
android:id="@+id/scroll"
android:scrollbars="none"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/buttons"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:background="@android:color/transparent"
android:layout_below="@id/adView">
<TableLayout
android:id="@+id/tableView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:shrinkColumns="1"
android:stretchColumns="1"
/>
</ScrollView>
</RelativeLayout>
和自定义类。请注意,我尝试了来自svg-android的提示,但没有运气:
public class SvgView extends View {
Picture picture;
long startTime;
float scaleFactor;
public SvgView(Context context,AttributeSet attrs) {
super(context,attrs);
setImage(attrs.getAttributeResourceValue("http://schemas.android.com/apk/res/android","src", 0));
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB)
{
disableHardwareAcceleration();
}
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private void disableHardwareAcceleration()
{
setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
public SvgView(Context context) {
super(context);
}
public void setImage(int img_resource)
{
// Parse the SVG file from the resource
SVG svg = SVGParser.getSVGFromResource(getResources(),img_resource);
picture = svg.getPicture();
}
public void onDraw(Canvas canvas) {
if (picture!=null)
{
scaleFactor=Math.min((float)getHeight()/picture.getHeight(),(float)getWidth()/picture.getWidth());
canvas.scale((float)scaleFactor,(float)scaleFactor);
canvas.drawPicture(picture);
}
}
}
最后,这是来自我的 Galaxy Nexus 和模拟器的图像。注意背景的不同。