如何以编程方式将活动的背景颜色设置为白色？ [英] How to set background color of an Activity to white programmatically?

问题描述

如何将活动的背景颜色设置为白色？

How can I set the background color of an Activity to white programatically?

推荐答案

，然后设置背景颜色。根布局是你调用的setContentView。

Get a handle to the root layout used, then set the background color on that. The root layout is whatever you called setContentView with.

 setContentView(R.layout.main);

  // Now get a handle to any View contained 
  // within the main layout you are using
  View someView = findViewById(R.id.randomViewInMainLayout);

  // Find the root view
  View root = someView.getRootView();

  // Set the color
  root.setBackgroundColor(getResources().getColor(android.R.color.red));

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