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如何使用代码而不是xml设置ImageView的边距

发布于 2024-09-13 09:09:54 字数 361 浏览 17 评论 0原文

我想将未知数量的 ImageView 视图添加到带有边距的布局中。在 XML 中，我可以像这样使用 layout_margin ：

有 <代码>ImageView.setPadding()，但没有ImageView.setMargin()。我认为这与 ImageView.setLayoutParams(LayoutParams) 类似，但不确定要输入什么内容。

有谁知道吗？

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海螺姑娘 2024-09-20 09:09:55

如果您想更改图像视图边距但保持所有其他边距不变。

在本例中获取图像视图的 MarginLayoutParameters：myImageView

 MarginLayoutParams marginParams = (MarginLayoutParams) myImageView.getLayoutParams();

现在只需更改您想要更改的边距，但保持其他不变：

 marginParams.setMargins(marginParams.leftMargin, 
                         marginParams.topMargin, 
                         150, //注意只改变右边距
                         marginParams.bottomMargin);

If you want to change imageview margin but leave all other margins intact.

Get MarginLayoutParameters of your image view in this case: myImageView

 MarginLayoutParams marginParams = (MarginLayoutParams) myImageView.getLayoutParams();

Now just change the margin you want to change but leave the others as they are:

 marginParams.setMargins(marginParams.leftMargin, 
                         marginParams.topMargin, 
                         150, //notice only changing right margin
                         marginParams.bottomMargin);

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浅紫色的梦幻 2024-09-20 09:09:55

2020 年的答案：

dependencies {
    implementation "androidx.core:core-ktx:1.2.0"
}

并在代码中简单地进行计算

view.updateLayoutParams<ViewGroup.MarginLayoutParams> {
   setMargins(5)
}

Answer from 2020 year :

dependencies {
    implementation "androidx.core:core-ktx:1.2.0"
}

and cal it simply in your code

view.updateLayoutParams<ViewGroup.MarginLayoutParams> {
   setMargins(5)
}

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安静被遗忘 2024-09-20 09:09:55

我简单地使用这个并且效果很好：

ImageView imageView = (ImageView) findViewById(R.id.image_id);
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) imageView.getLayoutParams();
layoutParams.setMargins(left, top, right, bottom);
imageView.setLayoutParams(layoutParams);

setMargins() 的单位是像素而不是 dp。如果您想以 dp 为单位设置边距，请在您的 values/dimens.xml 文件中创建您的尺寸，如：

<resources>
    <dimen name="right">16dp</dimen>
    <dimen name="left">16dp</dimen>    
</resources>

并访问如下：

getResources().getDimension(R.dimen.right);

I use simply this and works great:

ImageView imageView = (ImageView) findViewById(R.id.image_id);
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) imageView.getLayoutParams();
layoutParams.setMargins(left, top, right, bottom);
imageView.setLayoutParams(layoutParams);

setMargins()'s unit is pixel not dp. If you want to set margin in dp, just inside your values/dimens.xml file create your dimensions like:

<resources>
    <dimen name="right">16dp</dimen>
    <dimen name="left">16dp</dimen>    
</resources>

and access like:

getResources().getDimension(R.dimen.right);

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只涨不跌 2024-09-20 09:09:55

如果您使用 kotlin，则可以通过创建扩展函数来简化

fun View.setMarginExtensionFunction(left: Int, top: Int, right: Int, bottom: Int) {
  val params = layoutParams as ViewGroup.MarginLayoutParams
  params.setMargins(left, top, right, bottom)
  layoutParams = params
}

现在您所需要的只是一个视图，并且该扩展函数可以在任何地方使用。

val imageView = findViewById(R.id.imageView)
imageView.setMarginExtensionFunction(0, 0, 0, 0)

If you use kotlin, this can be simplified by creating an extension function

fun View.setMarginExtensionFunction(left: Int, top: Int, right: Int, bottom: Int) {
  val params = layoutParams as ViewGroup.MarginLayoutParams
  params.setMargins(left, top, right, bottom)
  layoutParams = params
}

Now all you need is a view, and this extension function can be used anywhere.

val imageView = findViewById(R.id.imageView)
imageView.setMarginExtensionFunction(0, 0, 0, 0)

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红玫瑰 2024-09-20 09:09:55

如果您想以 dp 指定边距，可以使用此方法：

private void addMarginsInDp(View view, int leftInDp, int topInDp, int rightInDp, int bottomInDp) {
    DisplayMetrics dm = view.getResources().getDisplayMetrics();
    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    lp.setMargins(convertDpToPx(leftInDp, dm), convertDpToPx(topInDp, dm), convertDpToPx(rightInDp, dm), convertDpToPx(bottomInDp, dm));
    view.setLayoutParams(lp);
}

private int convertDpToPx(int dp, DisplayMetrics displayMetrics) {
    float pixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, displayMetrics);
    return Math.round(pixels);
}

You can use this method, in case you want to specify margins in dp:

private void addMarginsInDp(View view, int leftInDp, int topInDp, int rightInDp, int bottomInDp) {
    DisplayMetrics dm = view.getResources().getDisplayMetrics();
    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    lp.setMargins(convertDpToPx(leftInDp, dm), convertDpToPx(topInDp, dm), convertDpToPx(rightInDp, dm), convertDpToPx(bottomInDp, dm));
    view.setLayoutParams(lp);
}

private int convertDpToPx(int dp, DisplayMetrics displayMetrics) {
    float pixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, displayMetrics);
    return Math.round(pixels);
}

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芸娘子的小脾气 2024-09-20 09:09:55

动态创建布局并设置其参数，因为 setmargin() 不能直接在 imageView 上工作

ImageView im;
im = (ImageView) findViewById(R.id.your_image_in_XML_by_id);
 RelativeLayout.LayoutParams layout = new RelativeLayout.LayoutParams(im.getLayoutParams());
                        layout.setMargins(counter*27, 0, 0, 0);//left,right,top,bottom
                        im.setLayoutParams(layout);
                        im.setImageResource(R.drawable.yourimage)

create layout dynamically and set its parameter as setmargin() will not work directly on an imageView

ImageView im;
im = (ImageView) findViewById(R.id.your_image_in_XML_by_id);
 RelativeLayout.LayoutParams layout = new RelativeLayout.LayoutParams(im.getLayoutParams());
                        layout.setMargins(counter*27, 0, 0, 0);//left,right,top,bottom
                        im.setLayoutParams(layout);
                        im.setImageResource(R.drawable.yourimage)

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护你周全 2024-09-20 09:09:55

对我来说这有效：

int imgCarMarginRightPx = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, definedValueInDp, res.getDisplayMetrics());

MarginLayoutParams lp = (MarginLayoutParams) imgCar.getLayoutParams();
lp.setMargins(0,0,imgCarMarginRightPx,0);
imgCar.setLayoutParams(lp);

For me this worked:

int imgCarMarginRightPx = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, definedValueInDp, res.getDisplayMetrics());

MarginLayoutParams lp = (MarginLayoutParams) imgCar.getLayoutParams();
lp.setMargins(0,0,imgCarMarginRightPx,0);
imgCar.setLayoutParams(lp);

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一瞬间的火花 2024-09-20 09:09:55

示例代码在这里，非常简单

LayoutParams params1 = (LayoutParams)twoLetter.getLayoutParams();//twoletter-imageview
                params1.height = 70;
                params1.setMargins(0, 210, 0, 0);//top margin -210 here
                twoLetter.setLayoutParams(params1);//setting layout params
                twoLetter.setImageResource(R.drawable.oo);

sample code is here ,its very easy

LayoutParams params1 = (LayoutParams)twoLetter.getLayoutParams();//twoletter-imageview
                params1.height = 70;
                params1.setMargins(0, 210, 0, 0);//top margin -210 here
                twoLetter.setLayoutParams(params1);//setting layout params
                twoLetter.setImageResource(R.drawable.oo);

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只涨不跌 2024-09-20 09:09:55

在 Kotlin 中你可以用更愉快的方式编写它

myView.layoutParams = LinearLayout.LayoutParams(
                RadioGroup.LayoutParams.MATCH_PARENT, RadioGroup.LayoutParams.WRAP_CONTENT
            ).apply {
                setMargins(12, 12, 12, 12)
            }

In Kotlin you can write it in more pleasant way

myView.layoutParams = LinearLayout.LayoutParams(
                RadioGroup.LayoutParams.MATCH_PARENT, RadioGroup.LayoutParams.WRAP_CONTENT
            ).apply {
                setMargins(12, 12, 12, 12)
            }

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絕版丫頭 2024-09-20 09:09:55

下面是在左、上、右、下添加 8px 边距的示例。


ImageView imageView = new ImageView(getApplicationContext());

ViewGroup.MarginLayoutParams marginLayoutParams = new ViewGroup.MarginLayoutParams(
    ViewGroup.MarginLayoutParams.MATCH_PARENT,
    ViewGroup.MarginLayoutParams.WRAP_CONTENT
);

marginLayoutParams.setMargins(8, 8, 8, 8);

imageView.setLayoutParams(marginLayoutParams);

Here is an example to add 8px Margin on left, top, right, bottom.


ImageView imageView = new ImageView(getApplicationContext());

ViewGroup.MarginLayoutParams marginLayoutParams = new ViewGroup.MarginLayoutParams(
    ViewGroup.MarginLayoutParams.MATCH_PARENT,
    ViewGroup.MarginLayoutParams.WRAP_CONTENT
);

marginLayoutParams.setMargins(8, 8, 8, 8);

imageView.setLayoutParams(marginLayoutParams);

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故事与诗 2024-09-20 09:09:55

在某些情况下，使用与此类似的方法可能会为您省去一些麻烦。
如果您对边距进行了两次编程修改，那么检查是否已经设置了一些布局参数会更安全。如果已经有一些边距，则应该增加它们而不是替换它们：

public void addMargins(View v, int left, int top, int right, int bottom) {
    LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) v.getLayoutParams();
    if (params == null)
        params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                                               ViewGroup.LayoutParams.WRAP_CONTENT);
    int oldLeft = params.leftMargin;
    int oldTop = params.topMargin;
    int oldRight = params.rightMargin;
    int oldBottom = params.bottomMargin;
    params.setMargins(oldLeft + left, oldTop + top, oldRight + right, oldBottom + bottom);
    v.setLayoutParams(params);
}

Using a method similar to this might save you some headaches in some situations.
If you have two passes of programmatical tinkering with margins it is safer to check if there are already some layoutParams set. If there are some margins already one should increase them and not replace them:

public void addMargins(View v, int left, int top, int right, int bottom) {
    LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) v.getLayoutParams();
    if (params == null)
        params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                                               ViewGroup.LayoutParams.WRAP_CONTENT);
    int oldLeft = params.leftMargin;
    int oldTop = params.topMargin;
    int oldRight = params.rightMargin;
    int oldBottom = params.bottomMargin;
    params.setMargins(oldLeft + left, oldTop + top, oldRight + right, oldBottom + bottom);
    v.setLayoutParams(params);
}

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千と千尋 2024-09-20 09:09:55

我们可以创建Linear LayoutParams &使用 resources.getDimensionPixelSize 作为 dp 值。

    val mContext = parent.context
    val mImageView = AppCompatImageView(mContext)
    mImageView.setBackgroundResource(R.drawable.payment_method_selector)

    val height = mContext.resources.getDimensionPixelSize(R.dimen.payment_logo_height)
    val width = mContext.resources.getDimensionPixelSize(R.dimen.payment_logo_width)
    val padding = mContext.resources.getDimensionPixelSize(R.dimen.spacing_small_tiny)
    val margin = mContext.resources.getDimensionPixelSize(R.dimen.spacing_small)

    mImageView.layoutParams = LinearLayout.LayoutParams(width, height).apply {
        setMargins(margin, margin, 0, 0)
    }
    mImageView.setPadding(padding, padding, padding, padding)

We can create Linear LayoutParams & use resources.getDimensionPixelSize for dp value.

    val mContext = parent.context
    val mImageView = AppCompatImageView(mContext)
    mImageView.setBackgroundResource(R.drawable.payment_method_selector)

    val height = mContext.resources.getDimensionPixelSize(R.dimen.payment_logo_height)
    val width = mContext.resources.getDimensionPixelSize(R.dimen.payment_logo_width)
    val padding = mContext.resources.getDimensionPixelSize(R.dimen.spacing_small_tiny)
    val margin = mContext.resources.getDimensionPixelSize(R.dimen.spacing_small)

    mImageView.layoutParams = LinearLayout.LayoutParams(width, height).apply {
        setMargins(margin, margin, 0, 0)
    }
    mImageView.setPadding(padding, padding, padding, padding)

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画骨成沙 2024-09-20 09:09:54

android.view.ViewGroup.MarginLayoutParams 有一个方法 setMargins(left, top, right, Bottom)。直接子类是：FrameLayout.LayoutParams、LinearLayout.LayoutParams 和RelativeLayout.LayoutParams。

使用例如LinearLayout：

LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(left, top, right, bottom);
imageView.setLayoutParams(lp);

MarginLayoutParams

这设置边距（以像素为单位）。要缩放它，请使用

context.getResources().getDisplayMetrics().density

DisplayMetrics

android.view.ViewGroup.MarginLayoutParams has a method setMargins(left, top, right, bottom). Direct subclasses are: FrameLayout.LayoutParams, LinearLayout.LayoutParams and RelativeLayout.LayoutParams.

Using e.g. LinearLayout:

LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(left, top, right, bottom);
imageView.setLayoutParams(lp);

MarginLayoutParams

This sets the margins in pixels. To scale it use

context.getResources().getDisplayMetrics().density

DisplayMetrics

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小鸟爱天空丶 2024-09-20 09:09:54

    image = (ImageView) findViewById(R.id.imageID);
    MarginLayoutParams marginParams = new MarginLayoutParams(image.getLayoutParams());
    marginParams.setMargins(left_margin, top_margin, right_margin, bottom_margin);
    RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(marginParams);
    image.setLayoutParams(layoutParams);

    image = (ImageView) findViewById(R.id.imageID);
    MarginLayoutParams marginParams = new MarginLayoutParams(image.getLayoutParams());
    marginParams.setMargins(left_margin, top_margin, right_margin, bottom_margin);
    RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(marginParams);
    image.setLayoutParams(layoutParams);

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初见你 2024-09-20 09:09:54

上面的所有示例实际上都会替换视图中已经存在的任何参数，这可能是不需要的。以下代码将仅扩展现有参数，而不替换它们：

ImageView myImage = (ImageView) findViewById(R.id.image_view);
MarginLayoutParams marginParams = (MarginLayoutParams) image.getLayoutParams();
marginParams.setMargins(left, top, right, bottom);

All the above examples will actually REPLACE any params already present for the View, which may not be desired. The below code will just extend the existing params, without replacing them:

ImageView myImage = (ImageView) findViewById(R.id.image_view);
MarginLayoutParams marginParams = (MarginLayoutParams) image.getLayoutParams();
marginParams.setMargins(left, top, right, bottom);

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还如梦归 2024-09-20 09:09:54

Kevin 的代码创建了冗余的 MarginLayoutParams 对象。更简单的版本：

ImageView image = (ImageView) findViewById(R.id.main_image);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(image.getLayoutParams());
lp.setMargins(50, 100, 0, 0);
image.setLayoutParams(lp);

Kevin's code creates redundant MarginLayoutParams object. Simpler version:

ImageView image = (ImageView) findViewById(R.id.main_image);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(image.getLayoutParams());
lp.setMargins(50, 100, 0, 0);
image.setLayoutParams(lp);

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