java - R.layout.activity_main 添加LinearLayout

Question

我有一个布局R.layout.activity_main，我必须向这个布局添加另一个布局，但使用java代码。

所以我实现了这样的东西:

LinearLayout layout = new LinearLayout(this);
LinearLayout.LayoutParams match_parent = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
layout.setBackgroundColor(Color.parseColor("#000000"));
layout.setOrientation(LinearLayout.VERTICAL);
layout.setLayoutParams(match_parent);

所以对于R.layout.activity_main，我需要添加上面的代码。

我该怎么办？

Answer 1

在您的 Activity 中执行以下操作:

public void onCreate(Bundle savedInstanceState){
    setContentView(R.layout.activity_main);
    LinearLayout layout = new LinearLayout(this);
    LinearLayout.LayoutParams match_parent = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
    layout.setBackgroundColor(Color.parseColor("#000000"));
    layout.setOrientation(LinearLayout.VERTICAL);
    layout.setLayoutParams(match_parent);
    ViewGroup group = findViewById(R.id.id_where_you_wanna_add_your_layout);
    group.addView(layout)
}