不同活动中的相同导航抽屉 [英] Same Navigation Drawer in different Activities

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本文介绍了不同活动中的相同导航抽屉的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我制作了一个可用的导航抽屉,就像 developer.android.com 网站上的教程中所示.但现在,我想使用一个导航抽屉,我在 NavigationDrawer.class 中为我的应用程序中的多个活动创建.

I made a working navigation drawer like it's shown in the tutorial on the developer.android.com website. But now, I want to use one Navigation Drawer, i created in the NavigationDrawer.class for multiple Activities in my Application.

我的问题是,这里是否有人可以制作一个小教程,其中解释了如何将一个导航抽屉用于多个活动.

My question is, if anyone here can make a little Tutorial, which explains, how to use one Navigation drawer for multiple Activities.

我首先阅读了这个答案多个 Activity 上的 Android 导航抽屉

但它对我的项目不起作用

but it didn't work on my Project

public class NavigationDrawer extends Activity {
public DrawerLayout drawerLayout;
public ListView drawerList;
private ActionBarDrawerToggle drawerToggle;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawerToggle = new ActionBarDrawerToggle((Activity) this, drawerLayout, R.drawable.ic_drawer, 0, 0) {

        public void onDrawerClosed(View view) {
            getActionBar().setTitle(R.string.app_name);
        }

        public void onDrawerOpened(View drawerView) {
            getActionBar().setTitle(R.string.menu);
        }
    };
    drawerLayout.setDrawerListener(drawerToggle);

    getActionBar().setDisplayHomeAsUpEnabled(true);
    getActionBar().setHomeButtonEnabled(true);

    listItems = getResources().getStringArray(R.array.layers_array);
    drawerList = (ListView) findViewById(R.id.left_drawer);
    drawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, android.R.id.text,
            listItems));
    
    drawerList.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int pos, long arg3) {
            drawerClickEvent(pos);
        }
    });
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    if (drawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    return super.onOptionsItemSelected(item);

}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    drawerToggle.syncState();
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    drawerToggle.onConfigurationChanged(newConfig);
}
}

在这个活动中,我想要导航抽屉,所以我扩展了导航抽屉",在其他一些活动中,我想使用相同的导航抽屉

In this Activity i want to have the Navigation Drawer so I extends 'NavigationDrawer' and in some other Activities i want to User the Same Navigation drawer

  public class SampleActivity extends NavigationDrawer {...}

推荐答案

如果你想要一个导航抽屉,你应该使用片段.我上周学习了本教程,效果很好:

If you want a navigation drawer, you should use fragments. I followed this tutorial last week and it works great:

http://developer.android.com/training/implementing-导航/导航抽屉.html

您还可以从本教程下载示例代码,以了解如何执行此操作.

You can also download sample code from this tutorial, to see how you can do this.

没有片段:

这是您的 BaseActivity 代码:

This is your BaseActivity Code:

public class BaseActivity extends Activity
{
    public DrawerLayout drawerLayout;
    public ListView drawerList;
    public String[] layers;
    private ActionBarDrawerToggle drawerToggle;
    private Map map;

    protected void onCreate(Bundle savedInstanceState)
    {
        // R.id.drawer_layout should be in every activity with exactly the same id.
        drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

        drawerToggle = new ActionBarDrawerToggle((Activity) this, drawerLayout, R.drawable.ic_drawer, 0, 0) 
        {
            public void onDrawerClosed(View view) 
            {
                getActionBar().setTitle(R.string.app_name);
            }

            public void onDrawerOpened(View drawerView) 
            {
                getActionBar().setTitle(R.string.menu);
            }
        };
        drawerLayout.setDrawerListener(drawerToggle);

        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);

        layers = getResources().getStringArray(R.array.layers_array);
        drawerList = (ListView) findViewById(R.id.left_drawer);
        View header = getLayoutInflater().inflate(R.layout.drawer_list_header, null);
        drawerList.addHeaderView(header, null, false);
        drawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, android.R.id.text1,
                layers));
        View footerView = ((LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(
                R.layout.drawer_list_footer, null, false);
        drawerList.addFooterView(footerView);

        drawerList.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int pos, long arg3) {
                map.drawerClickEvent(pos);
            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (drawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        return super.onOptionsItemSelected(item);

    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        drawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        drawerToggle.onConfigurationChanged(newConfig);
    }
}

所有其他需要有导航抽屉的 Activity 应该扩展这个 Activity 而不是 Activity 本身,例如:

All the other Activities that needs to have a navigation drawer should extend this Activity instead of Activity itself, example:

public class AnyActivity extends BaseActivity
{
    //Because this activity extends BaseActivity it automatically has the navigation drawer
    //You can just write your normal Activity code and you don't need to add anything for the navigation drawer
}

XML

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <!-- The main content view -->
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
        <!-- Put what you want as your normal screen in here, you can also choose for a linear layout or any other layout, whatever you prefer -->
    </FrameLayout>
    <!-- The navigation drawer -->
    <ListView android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp"
        android:background="#111"/>
</android.support.v4.widget.DrawerLayout>

<小时>

我自己也遇到了一些困难,所以如果您遇到 NullPointerExceptions,这里有一个解决方案.在 BaseActivity 中,将 onCreate 函数更改为 protected void onCreateDrawer().其余的可以保持不变.在扩展 BaseActivity 的活动中,按以下顺序放置代码:

I experienced some difficulties myself, so here is a solution if you get NullPointerExceptions. In BaseActivity change the onCreate function to protected void onCreateDrawer(). The rest can stay the same. In the Activities which extend BaseActivity put the code in this order:

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity);
    super.onCreateDrawer();

这帮助我解决了我的问题,希望它有帮助!

This helped me fix my problem, hope it helps!

如果您有任何问题,请随时提出.

This is how you can create a navigation drawer with multiple activities, if you have any questions feel free to ask.

编辑 2:

正如@GregDan 所说,你的 BaseActivity 也可以覆盖 setContentView() 并在那里调用 onCreateDrawer:

As said by @GregDan your BaseActivity can also override setContentView() and call onCreateDrawer there:

@Override 
public void setContentView(@LayoutRes int layoutResID) 
{ 
    super.setContentView(layoutResID); 
    onCreateDrawer() ;
}

这篇关于不同活动中的相同导航抽屉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!

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