android RelativeLayout 以编程方式更改高度
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android RelativeLayout change height programmatically
提问by Beka
I try change layout height programmatically. I have two buttons. In one button I change my layout position and second button I try to receive save position witch I was first time.
我尝试以编程方式更改布局高度。我有两个按钮。在一个按钮中，我更改了布局位置，在第二个按钮中，我尝试接收我第一次使用的保存位置。
<RelativeLayout
android:id="@+id/popaplayout"
android:layout_width="fill_parent"
android:layout_height="200dp" >
This is a my layout and in first button I wrote
这是我的布局，在我写的第一个按钮中
RelativeLayout.LayoutParams parms = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.FILL_PARENT);
parms.addRule(RelativeLayout.BELOW, R.id.movies_title_layout);
scrollpopap.setLayoutParams(parms);
scrollpopap.setScrollingEnabled(true);
and second button
和第二个按钮
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, 300);
rel_btn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
scrollpopap.setLayoutParams(rel_btn);
scrollpopap.setScrollingEnabled(false);
In xmlfile I wrote height 200dp and programmatically 300 and there are different height. How I can wrote save height in programmatically?
在xml文件中我写了高度 200dp 和编程 300 并且有不同的高度。我如何以编程方式编写保存高度？
if anyone knows solution please help me thanks
如果有人知道解决方案请帮助我谢谢
回答by My God
First convert 200 dpinto pixels -
首先将200 dp转换为像素 -
final float scale = getContext().getResources().getDisplayMetrics().density;
int pixels = (int) (200 * scale + 0.5f);
Then set programatically,
然后以编程方式设置，
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, pixels);
rel_btn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
scrollpopap.setLayoutParams(rel_btn);
scrollpopap.setScrollingEnabled(false);
回答by Ankit Kumar
Convert DP to PX like this.
像这样将DP转换为PX。
final float scale = getContext().getResources().getDisplayMetrics().density;
int px = (int) (100 * scale + 0.5f); // replace 100 with your dimensions
Set Some layout_gravity of relative layout. and Change height and width by java code.
设置相对布局的一些 layout_gravity。并通过java代码更改高度和宽度。
RelativeLayout rl = (RelativeLayout) findViewById(R.id.yourId);
rl.getLayoutParams().height = px;
rl.getLayoutParams().width = px;
回答by shaiban
If you intending to change RelativeLayoutheight, then this help.
如果您打算更改RelativeLayout高度，那么这会有所帮助。
RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.yourId);
relativeLayout.getLayoutParams().height = 100;
relativeLayout.getLayoutParams().width = 100;
回答by Ramesh Devaiya
Use this
用这个
RelativeLayout layout = (RelativeLayout) findViewById(R.id.yourlayout_id);
// Gets the layout params that will allow you to resize the layout
LayoutParams params = layout.getLayoutParams();
params.height = 320;
params.width = 320;
