Question

您好我想在我的活动中更改图片视图的高度和宽度属性我按照以下方式尝试了它，但它不适合我...

View card_view = getLayoutInflater().inflate(R.layout.card_details1,null);
coupon_img = (ImageView) card_view.findViewById(R.id.coupon_image);
// I tried this ////////
coupon_img.getLayoutParams().height = 20;
coupon_img.getLayoutParams().width = 20;
// I also tried this ////
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(100, 100);
    coupon_img.setLayoutParams(layoutParams);
// also this one ////
coupon_img.setMaxHeight(10);

但是我无法改变imageview src的高度和宽度。我有什么错误吗？这该怎么做？需要帮忙... 谢谢......

Answer 1

在这段代码中，我在运行时创建ImageView的新实例并为其设置维度：

// SET THE IMAGEVIEW DIMENSIONS
int dimens = 120;
float density = activity.getResources().getDisplayMetrics().density;
int finalDimens = (int)(dimens * density);

LinearLayout.LayoutParams imgvwDimens = 
        new LinearLayout.LayoutParams(finalDimens, finalDimens);
imgAlbumPhoto.setLayoutParams(imgvwDimens);

// SET SCALETYPE
imgAlbumPhoto.setScaleType(ScaleType.CENTER_CROP);

// SET THE MARGIN
int dimensMargin = 5;
float densityMargin = activity.getResources().getDisplayMetrics().density;
int finalDimensMargin = (int)(dimensMargin * densityMargin);

LinearLayout.LayoutParams imgvwMargin = 
        new LinearLayout.LayoutParams(finalDimens, finalDimens);
imgvwMargin.setMargins
(finalDimensMargin, finalDimensMargin, finalDimensMargin, finalDimensMargin);

这将设置ImageView的尺寸。但是，它们将在 px 中。如果您需要 dp 值，请使用此处的代码：https://stackoverflow.com/a/9563438/450534

<强>更新：

要更改已在XML中定义的现有ImageView的维度，请使用以下命令：

coupon_img.setLayoutParams(new LayoutParams(100, 100));

Answer 2

尝试这样的事情......

 LayoutParams params = new LayoutParams(100, 100);
 parantlayout.addView(coupon_img, params);

我认为这会对你有帮助。

Answer 3

我认为您没有将更改的图像添加到布局中。

LinearLayout ll = (LinearLayout)findViewById(R.layout.yourlinearlayout);

image.setLayoutParams(
          new LinearLayout.LayoutParams(
                 bmp.getWidth(), 
                 bmp.getHeight())); 
ll.addView(image);// Then add the image to linear layout

如何在活动android中设置Imageview高度和宽度

3 个答案: