Android imageview not respecting maxWidth?
So, I have an imageview that should display an arbitrary image, a profile picture downloaded from the internet. I want this the ImageView to scale its image to fit inside the height of the parent container, and a set max width of 60dip. However, if the image is tall ratio-wise, and doesn't need the full 60dip of width, the ImageView's width should decrease so the view's background fits snugly around the image.
I tried this,
<ImageView android:id="@+id/menu_profile_picture"
android:layout_width="wrap_content"
android:maxWidth="60dip"
android:layout_height="fill_parent"
android:layout_marginLeft="2dip"
android:padding="4dip"
android:scaleType="centerInside"
android:background="@drawable/menubar_button"
android:layout_centerVertical="true"/>
but that made the ImageView super large for some reason, maybe it used the intrinsic width of the image and wrap_content to set it - anyway, it didn't respect my maxWidth attribute.. Does that only work inside some types of containers? It's in a LinearLayout...
Any suggestions?
Ah,
android:adjustViewBounds="true"
is required for maxWidth to work.
Works now!
如果使用match_parent ，则设置adjustViewBounds无效，但解决方法很简单自定义ImageView ：
public class LimitedWidthImageView extends ImageView {
public LimitedWidthImageView(Context context) {
super(context);
}
public LimitedWidthImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public LimitedWidthImageView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int specWidth = MeasureSpec.getSize(widthMeasureSpec);
int maxWidth = getMaxWidth();
if (specWidth > maxWidth) {
widthMeasureSpec = MeasureSpec.makeMeasureSpec(maxWidth,
MeasureSpec.getMode(widthMeasureSpec));
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
上一篇: 动态设置图像路径