android – 如何使NavigationView标头粘滞

是否可以在设计支持库NavigationView中使标题粘滞？

<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);
}

}

然后将其添加到活动的onCreate：

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

这样可以达到预期的效果(如果有点不好意思)但是当菜单项位于标题下方时你仍然可以点击它们,有什么想法可以解决这个问题吗？

解决方法:

经过大量的实验,我得到了一些有用的东西……非常hacky,我很乐意听到你需要改进的建议！

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);
}

}

这是在主要活动的onCreate

// 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);

标签：android,androiddesignsupport
来源： https://codeday.me/bug/20190628/1315976.html