在運行時將子視圖位置更新到父視圖

Question

我有一個帶有TextView子項的FrameLayout，我想在運行時更改TextViews的位置（在onSensorChanged（）中，因此每秒幾次）。沒有setPosition（...），那麼我該怎麼做？

感謝

Answer 1

所有你需要的是View.layout(int,int,int,int)方法。
Reference說：

 
public void layout (int l, int t, int r, int b) 

Since: API Level 1 
Assign a size and position to a view and all of its descendants 
This is the second phase of the layout mechanism. (The first is measuring). 
In this phase, each parent calls layout on all of its children to position them. 
This is typically done using the child measurements that were stored 
in the measure pass(). 

Answer 2

FrameLayout並不好做這樣的事情，與RelativeLayout你可以做到以下幾點：

RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams)child.getLayoutParams(); 

layoutParams.leftMargin = x; 
layoutParams.topMargin = y; 

child.setLayoutParams(layoutParams);