是否可以在设计支持库 NavigationView 中使 header 保持粘性？

<android.support.design.widget.NavigationView
    android:id="@+id/nav_drawer"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    app:headerLayout="@layout/nav_header"
    app:menu="@menu/nav_drawer"
    style="@style/navigation_view_drawer"
    />

编辑:

到目前为止，我的尝试导致了这一点

覆盖 NavigationView 小部件并添加新方法:

public class CustomNavigationView extends NavigationView {

public CustomNavigationView(Context context) {
    super(context);
}


public CustomNavigationView(Context context, AttributeSet attrs) {
    super(context, attrs);
}


public CustomNavigationView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}


// Inflates header as a child of NavigationView, on top of the normal menu
public void createHeader(int res) {
    LayoutInflater inflater = LayoutInflater.from(getContext());;
    View view = inflater.inflate(res, this, false);
    addView(view);
}

然后将其添加到 Activity 的 onCreate 中:

CustomNavigationView navigationView = (CustomNavigationView) findViewById(R.id.your_navigation_view);
navigationView.createHeader(R.layout.your_header);

这达到了预期的效果(如果有点笨拙)但是当菜单项位于标题下方时您仍然可以单击它们，有什么解决这个问题的想法吗？

最佳答案

经过大量试验后，我找到了一些有用的东西...它非常 hacky，我很想听听您提出的任何改进建议!

覆盖的 NavigationView

public class CustomNavigationView extends NavigationView {

public CustomNavigationView(Context context) {
    super(context);
}


public CustomNavigationView(Context context, AttributeSet attrs) {
    super(context, attrs);
}


public CustomNavigationView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}


// Consumes touch in the NavigationView so it doesn't propagate to views below
public boolean onTouchEvent (MotionEvent me) {
    return true;
}


// Inflates header as a child of NavigationView
public void createHeader(int res) {
    LayoutInflater inflater = LayoutInflater.from(getContext());
    View view = inflater.inflate(res, this, false);

    // Consumes touch in the header so it doesn't propagate to menu items below
    view.setOnTouchListener(new OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event){
            return true;
        }
    });

    addView(view);
}


// Positions and sizes the menu view
public void sizeMenu(View view) {
    // Height of header
    int header_height = (int) getResources().getDimension(R.dimen.nav_header_height);

    // Gets required display metrics
    DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
    float screen_height = displayMetrics.heightPixels;

    // Height of menu
    int menu_height = (int) (screen_height - header_height);

    // Layout params for menu
    LayoutParams params = new LayoutParams(
            LayoutParams.MATCH_PARENT,
            LayoutParams.WRAP_CONTENT);
    params.gravity = Gravity.BOTTOM;
    params.height = menu_height;
    view.setLayoutParams(params);
}

这在主 Activity 的 onCreate 中

// Inflates the nav drawer
    CustomNavigationView navigationView = (CustomNavigationView) findViewById(R.id.your_nav_view);
    navigationView.createHeader(R.layout.your_nav_header);

    // sizes nav drawer menu so it appears under header
    ViewGroup parent = (ViewGroup) navigationView;
    View view = parent.getChildAt(0);
    navigationView.sizeMenu(view);

关于android - 如何使 NavigationView header 具有粘性，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31547999/