使用导航抽屉显示片段 [英] Display fragments with Navigation Drawer

问题描述

我很困惑如何通过单击导航抽屉中的一个项目来打开不同的片段.

I'm confused how to open my different fragments by clicking on one Item in my navigation drawer.

在MainActivity中，我使用以下代码:

In MainActivity I use the following Code:

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    Fragment fragment;

    int id = item.getItemId();

    if (id == R.id.nav_listview) {
        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        ft.replace(R.id.fragment, new ListFragment());
        ft.commit();

    } else if (id == R.id.nav_add_data) {

    } else if (id == R.id.nav_settings) {

    } else if (id == R.id.nav_legal_information) {

    }

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
}

首先，我想尝试打开ListFragment:

First of all I want to try to open my ListFragment:

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;


public class ListFragment extends Fragment {


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        return inflater.inflate(R.layout.fragment_list, container, false);
    }
}

在我的内容main.xml中，创建了以下片段，当单击导航抽屉中的特定项目时，应将其替换.

In my content main.xml I created the following fragment which should be replaced when clicking on the specific Items in the Navigation Drawer.

    <fragment
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/fragment" />

但是它不起作用...

But it isnt working...

有人可以帮助我吗?

拉斯塔曼

推荐答案

请更改您的片段类ListFragment的名称，因为Liststrong已经是 android.app 中的片段的子类 包 android操作系统

Please Change The name of your fragment class ListFragment Because ListFragment is already Sub Class of Fragments in android.app package android OS

这篇关于使用导航抽屉显示片段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！