Question

对于Android Image View ..如何缩放1081 * 373图像按钮以匹配图像视图的宽度并固定高度??

我尝试匹配父级宽度如果图像按钮，但它'细节不出现...看起来像缩放图像？并且不能使用重力？

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/mainempty"
    />

<ImageButton
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:src="@drawable/about"



    />

Answer 1

试试吧！

public class MyBanner extends ImageView {
public MyBanner(Context context) {
    super(context);
}

public MyBanner(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public MyBanner(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int width = MeasureSpec.getSize(widthMeasureSpec);
    int height = width * 373 / 1081;
    setMeasuredDimension(width, height);
}

}

in xml

<your.package.MyBanner
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/about"/>

Android ImageView和ImageButton Scaling

1 个答案: