android dp不同高度,如何在android中為imageview設置高度和寬度dp？

I would like to set height and width in dp for ImageView in android pragmatically.

我想在android中實際設置ImageView中的高度和寬度。

How can I achieve this?

我怎樣才能做到這一點?

7 个解决方案

#1

47

Set width & height with dp :

用dp設置寬度和高度:

imageview.getLayoutParams().height = (int) getResources().getDimension(R.dimen.imageview_height);

imageview.getLayoutParams().width = (int) getResources().getDimension(R.dimen.imageview_width);

In your dimens.xml provide values for the keys :

在dimens.xml中提供鍵的值:

50dp

50dp

#2

23

Use display metrics to get the sale factor and then just some simple maths - example, if I want 200x150dp:

使用顯示指標來獲得銷售因素,然后使用一些簡單的數學 - 例如,如果我想要200x150dp:

final float scale = getResources().getDisplayMetrics().density;

int dpWidthInPx = (int) (200 * scale);

int dpHeightInPx = (int) (150 * scale);

Then set the image view size:

然后設置圖像視圖大小:

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(dpWidthInPx, dpHeightInPx);

imageView.setLayoutParams(layoutParams);

#3

4

This may be simpler and should do the trick:

這可能更簡單,應該做的伎倆:

ImageView im = (ImageView)findViewById(R.id.image1);

LayoutParams params = im.getLayoutParams();

params.height = getActivity().getResources().getDimensionPixelSize(R.dimen.item_height);

params.width = getActivity().getResources().getDimensionPixelSize(R.dimen.item_width);

And in your dimens.xml

在您的dimens.xml中

80dp

80dp

#4

1

at first choose a desirable dip and assign it to a var.

首先選擇理想的傾角並將其分配給var。

int dipAmount=350;

Then read the height of your ImageView.

然后讀取ImageView的高度。

float scale = imageview.Resource.DisplayMetrics.Density;

float scale = imageview.Resource.DisplayMetrics.Density;

Convert from px to dip.

從px轉換為dip。

int converter =(int) (350 * scale + 0.5f);

int converter =(int)(350 * scale + 0.5f);

Set the height to imageview.

將高度設置為imageview。

imageView.LayoutParameters.Height=converter;

#5

0

This may help you...

這可能對你有所幫助......

ImageView im = (ImageView)findViewById(R.id.image1);

LayoutParams params = im.getLayoutParams();

params.height = 100;

params.width = 100;

#6

0

final float scale = getContext().getResources().getDisplayMetrics().density;

int height_ = (int) (250 * scale + 0.5f);

int width_ = (int) (250 * scale + 0.5f);

250 is in dp

250是dp

ViewGroup.LayoutParams params = ImageView.getLayoutParams();

params.height = height_;

params.width = width_;

ImageView.setLayoutParams(params);

#7

-2

Try this:

image_view.getLayoutParams().height = 20;

image_view.getLayoutParams().width= 20;

Give me your feedback if it's acceptable. It's work for me.

如果可以接受,請給我你的反饋。這對我有用。