以编程方式在视图上添加填充 [英] Add padding on view programmatically

问题描述

我正在开发 Android v2.2 应用.

I am developing Android v2.2 app.

我有一个 Fragment.在片段类的 onCreateView(...) 回调中，我将布局膨胀到片段，如下所示:

I have a Fragment. In the onCreateView(...) callback of my fragment class, I inflate an layout to the fragment like below:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.login, null);
        
    return view;
}

上面膨胀的布局文件是(login.xml):

The above inflated layout file is (login.xml):

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Username" />

    
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Username" />

</LinearLayout>

我想设置一个 paddingTop 到上面的 元素，我想在 Java 代码中做而不是在 xml 中进行.

I would like to set a paddingTop to the above <LinearLayout> element , and I want to do it in the Java code instead of do it in xml.

如何在我的片段 Java 类代码中将 paddingTop 设置为 ??

How to set paddingTop to <LinearLayout> in my fragment Java class code ??

推荐答案

view.setPadding(0,padding,0,0);

这会将顶部填充设置为 padding-pixels.

This will set the top padding to padding-pixels.

如果你想在 dp 中设置它，你可以做一个 转化:

If you want to set it in dp instead, you can do a conversion:

float scale = getResources().getDisplayMetrics().density;
int dpAsPixels = (int) (sizeInDp*scale + 0.5f);

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