FragmentActivity和FullScreen中的NavigationDrawer引發RuntimeException

我試圖使用FragmentActivity實現Navigation Drawer。
而我需要在FullScreen模式的應用程序。FragmentActivity和FullScreen中的NavigationDrawer引發RuntimeException

應用程序將引發RuntimeException每當我在清單

機器人添加這行代碼：主題= 「@安卓風格/ Theme.Black.NoTitleBar.Fullscreen」

如果我刪除這一行，然後它運作良好！

這裏是我的代碼：

的manifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.sample.app" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="14" 
     android:targetSdkVersion="17" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:largeHeap="true" 
     android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen" > 

     <activity 
      android:name="com.sample.app.MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 
       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter>     
     </activity> 

    </application> 

</manifest>

activity_main.xml中

<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" 
    tools:context=".MainActivity" > 

    <FrameLayout 
     android:id="@+id/main" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" > 
    </FrameLayout> 

    <ListView 
     android:id="@+id/drawer" 
     android:layout_width="240dp" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:background="#FFFFFF" 
     android:choiceMode="singleChoice"/> 

</android.support.v4.widget.DrawerLayout>

MainActivity.java

package com.sample.app; 

import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentActivity; 
import android.support.v4.app.FragmentTransaction; 
import android.support.v4.widget.DrawerLayout; 
import android.view.View; 
import android.view.WindowManager; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

public class MainActivity extends FragmentActivity { 
    final String[] data ={"one","two","three"}; 
    final String[] fragments ={ 
      "com.sample.app.FragmentOne"}; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActionBar().getThemedContext(), R.layout.drawer_list_item, data); 
     final DrawerLayout drawer = (DrawerLayout)findViewById(R.id.drawer_layout); 
     final ListView navList = (ListView) findViewById(R.id.drawer); 
     navList.setAdapter(adapter); 
     navList.setOnItemClickListener(new OnItemClickListener(){ 
       @Override 
       public void onItemClick(AdapterView<?> parent, View view, final int pos,long id){ 
         drawer.setDrawerListener(new DrawerLayout.SimpleDrawerListener(){ 
           @Override 
           public void onDrawerClosed(View drawerView){ 
             super.onDrawerClosed(drawerView); 
             FragmentTransaction tx = getSupportFragmentManager().beginTransaction(); 
             tx.replace(R.id.main, Fragment.instantiate(MainActivity.this, fragments[pos])); 
             tx.commit(); 
           } 
         }); 
         drawer.closeDrawer(navList); 
       } 
     }); 
     FragmentTransaction tx = getSupportFragmentManager().beginTransaction(); 
     tx.replace(R.id.main,Fragment.instantiate(MainActivity.this, fragments[0])); 
     tx.commit(); 
    } 

}

fragment_one.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" > 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_centerHorizontal="true" 
     android:layout_centerVertical="true" 
     android:text="one" /> 

</RelativeLayout>

FragmentOne.java

package com.sample.app; 

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

public class FragmentOne extends Fragment { 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) { 
     ViewGroup root = (ViewGroup) inflater.inflate(R.layout.fragment_one, null); 
     return root; 
    } 

}

和這裏的錯誤日誌

03-27 10:09:47.384: E/AndroidRuntime(993): FATAL EXCEPTION: main 
03-27 10:09:47.384: E/AndroidRuntime(993): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sample.app/com.sample.app.MainActivity}: java.lang.NullPointerException 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.ActivityThread.access$600(ActivityThread.java:141) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.os.Looper.loop(Looper.java:137) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.ActivityThread.main(ActivityThread.java:5041) 
03-27 10:09:47.384: E/AndroidRuntime(993): at java.lang.reflect.Method.invokeNative(Native Method) 
03-27 10:09:47.384: E/AndroidRuntime(993): at java.lang.reflect.Method.invoke(Method.java:511) 
03-27 10:09:47.384: E/AndroidRuntime(993): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
03-27 10:09:47.384: E/AndroidRuntime(993): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
03-27 10:09:47.384: E/AndroidRuntime(993): at dalvik.system.NativeStart.main(Native Method) 
03-27 10:09:47.384: E/AndroidRuntime(993): Caused by: java.lang.NullPointerException 
03-27 10:09:47.384: E/AndroidRuntime(993): at com.sample.app.MainActivity.onCreate(MainActivity.java:32) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.Activity.performCreate(Activity.java:5104) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
03-27 10:09:47.384: E/AndroidRuntime(993): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
03-27 10:09:47.384: E/AndroidRuntime(993): ... 11 more

爲什麼我無法全屏顯示包含導航抽屜的片段活動？

BTW，我試圖

android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"

添加到活動本身而不是應用程序，但它拋出了同樣的錯誤。

我試着setContentView(R.layout.activity_main)之前代碼

this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); 
getActionBar().setDisplayShowTitleEnabled(false); 
getActionBar().setDisplayShowHomeEnabled(false); 
((FragmentBreadCrumbs)(findViewById(android.R.id.title))).setVisibility(View.GONE);

添加這些行MainActivity.oncreate但它拋出了同樣的錯誤

來源

2014-03-27 Ashraf Bashir

對於那些有興趣誰的解決辦法是改變

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActionBar().getThemedContext(), R.layout.drawer_list_item, data);

因此它會是

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getApplicationContext(), R.layout.drawer_list_item, data);

因爲動作條沒有在全屏模式下

來源

2014-03-27 11:32:36

但是導航抽屜根本沒有顯示。我認爲這是一個不好的選擇。請檢查設計指南https://developer.android.com/design/patterns/navigation-drawer.html – Raghunandan

getActionBar()將返回null。你有

android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"

公共動作條getActionBar（）

在API級別11檢索到該活動的動作條的引用。

返回活動的ActionBar，如果沒有，則返回null。

來源

2014-03-27 10:41:53 Raghunandan

不再提供那麼如何，如果我想也使用導航抽屜有它全屏？ –

@AshrafBashir你不能AFAIK。還有什麼是32行'MainActivity.java'只是爲了確認 – Raghunandan

@AshrafBashir你可以隱藏導航欄https://developer.android.com/training/system-ui/navigation.html – Raghunandan

嘗試使用

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

，讓您的活動充滿篩選而不是使用主題，提供動作條，例如：@android:style/Theme.Holo.Light.DarkActionBar

來源

2014-03-27 10:56:31 Govtart

FragmentActivity和FullScreen中的NavigationDrawer引發RuntimeException

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