看不到导航抽屉 [英] Unable to see navigation drawer
本文介绍了看不到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
我在这里经历了类似的问题及其解决方案，但是花了几个小时才解决我的问题.我查看了许多解决方案，并尝试了它们，但仍然无法在屏幕上看到导航抽屉.如果有人能告诉我我在这里想念什么，我将不胜感激.
I have gone through similar questions and their solutions here, but I can't get past my issue after spending few hours on it. I looked at many solutions, tried them, but still can't get to see the navigation drawer on my screen. I will really appreciate if someone could tell me what am I missing here.
提前谢谢.
这是我的xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_layout"
android:layout_width="400dp"
android:layout_height="400dp"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/content_frame" >
</FrameLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".Menu">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:textColor="#fff"
android:text="test"
android:id="@+id/text" />
</RelativeLayout>
<ListView
android:layout_width="200dp"
android:layout_height="match_parent"
android:layout_gravity="end"
android:choiceMode="singleChoice"
android:background="#fff"
android:id="@+id/left_drawer" >
</ListView>
</android.support.v4.widget.DrawerLayout>
这是我的Menu.java:
Here's my Menu.java :
>public class Menu extends AppCompatActivity {
>
> public DrawerLayout dlayout;
> public ListView flist;
> public String[] menu;
> //public ArrayAdapter<String> mAdapter;
>
> @Override
> protected void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.activity_menu);
>
> menu = getResources().getStringArray(R.array.nav_drawer_items);
> dlayout = (DrawerLayout) findViewById(R.id.drawer_layout);
> flist = (ListView) findViewById(R.id.left_drawer);
>
> flist.setAdapter(new ArrayAdapter<String>(this, R.layout.activity_menu, >R.id.text, menu));
> }
>}
我没有看到任何输出.屏幕输出
I don't see any output.Screen output
推荐答案
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="@+id/header"
layout="@layout/menu"/>
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/frame"
android:textSize="24sp"
android:gravity="center"
android:layout_marginTop="50dp"/>
<ListView
android:id="@+id/list_item"
android:layout_width="200dp"
android:layout_height="match_parent"
android:dividerHeight="1dp"
android:layout_gravity="left|start"
android:background="#ffeeeeee"/></android.support.v4.widget.DrawerLayout>
MainActivity.java
MainActivity.java
public class MainActivity extends Activity {
String[] names = {"android","java","spring","html"};
ListView list;
FrameLayout frame;
ActionBarDrawerToggle action;
DrawerLayout drawer;
Button but;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
frame = (FrameLayout) findViewById(R.id.frame);
list = (ListView) findViewById(R.id.list_item);
but = (Button) findViewById(R.id.menu);
ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, names);
list.setAdapter(adapter);
action = new ActionBarDrawerToggle(this, drawer, R.string.drawer_open, R.string.drawer_close) {
/* Called when drawer is closed */
public void onDrawerClosed(View view) {
//Put your code here
}
/* Called when a drawer is opened */
public void onDrawerOpened(View drawerView) {
//Put your code here
}
};
drawer.setDrawerListener(action);
but.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (drawer != null) {
if (drawer.isDrawerOpen(list)) {
drawer.closeDrawer(list);
} else {
drawer.openDrawer(list);
process();
}
}
}
});
}
private void process() {
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
FragmentTransaction ft=getFragmentManager().beginTransaction();
switch (names[position])
{
case "android":
{
yourClass obj=new yourClass();
//ft.replace(R.id.frame,obj);
break
}
case "java":
{
yourClass obj=new yourClass();
//ft.replace(R.id.frame,obj);
break;
}
case "spring":
{
yourClass obj=new yourClass();
//ft.replace(R.id.frame,obj);
break;
}
case "html":
{
yourClass obj=new yourClass();
//ft.replace(R.id.frame,obj);
break;
}
default:
{
Toast.makeText(MainActivity.this,"you have to click another one",Toast.LENGTH_LONG).show();
}
}
ft.commitAllowingStateLoss();
list.setItemChecked(position, true);
drawer.closeDrawer(list);
}
});
}
}
menu.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
tools:context=".MainActivity"
android:layout_height="wrap_content">
<Button
android:id="@+id/menu"
android:title="menu"
android:icon="@drawable/menu"
android:background="@drawable/menu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:backgroundTint="#0a0a0a" /></LinearLayout>
这篇关于看不到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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