android - 如何计算布局中的 View 数量

Question

Android Studio 有没有办法显示 XML 布局中存在的 View 数量？众所周知，布局应该包含 <=80 个 View ，因此超过此值就会出现此警告，因此告知数量会非常有帮助。

LayoutName.xml has more than 80 views, bad for performance

public class FragmentApple extends android.support.v4.app.Fragment {

    public FragmentApple () {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_apple,container,false);

        int num = FragmentApple.getChildCount(); Log.d("Number of views in layout: ", "" + num);

        return v;
    }
}

Answer 1

你试过这个吗？:

layout.getChildCount();

更新

在我们在评论中讨论之后，这是您应该在代码中执行的操作:

public class FragmentApple extends android.support.v4.app.Fragment {

public FragmentApple () {
}

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_apple,container,false);



    return v;
}

@Override
public void onStart(){
super.onStart()
RelativeLayout (or Linear as in your xml) rl = (RelativeLayout) v.findViewbyId(R.id.your_layout_id)

int num = rl.getChildCount();
 Log.d("Number of views in layout: ", "" + num);
}

    }