탐색 창을 추가 한 후 Android 앱이 다운 됨

Question

이 Android 앱에서 작업 중입니다.이 앱에서는 'StartingActivity.java'가 자동으로 탐색 창을 포함하는 'HomeActivity.java'로 변경됩니다. 활동을 변경하는 동안 그러나, 여기 응용 프로그램의 crashes.Please 도움이 .. 코드

에게

package com.example.abhi.mymanager; 
import android.content.Intent; 
import android.os.Handler; 
import android.support.v7.app.ActionBarActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 

public class StartingActivity extends ActionBarActivity { 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_starting); 
    // for sending it to another activity after a time 
    Handler handler=new Handler(); 
    handler.postDelayed(new Runnable() { 
     @Override 
     public void run() { 
      Intent i=new Intent(StartingActivity.this,HomeActivity.class); 
      startActivity(i); 
      } 
     } 
    },5000); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.menu_starting, menu); 
    return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 

    //noinspection SimplifiableIfStatement 
    if (id == R.id.action_settings) { 
     return true; 
    } 

    return super.onOptionsItemSelected(item); 
    } 
} 

HomeActivity.java

package com.example.abhi.mymanager; 

import android.os.Bundle; 
import android.os.PersistableBundle; 
import android.support.v4.widget.DrawerLayout; 
import android.support.v7.app.ActionBarActivity; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 
import android.widget.Toast; 

/** 
* Created by abhi on 29-01-2015. 
*/ 
public class HomeActivity extends ActionBarActivity implements AdapterView.OnItemClickListener { 

    private DrawerLayout drawerLayout; 
    private ListView listView; 
    private String[] options; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.home_layout); 
     drawerLayout=(DrawerLayout)findViewById(R.id.drawer_layout); 
     listView=(ListView)findViewById(R.id.left_drawer); 
     listView.setAdapter(new ArrayAdapter<> (this,android.R.layout.simple_list_item_1,options)); 
     listView.setOnItemClickListener(this); 



    } 

    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     Toast.makeText(this,options[position],Toast.LENGTH_LONG).show(); 
     getSupportActionBar().setTitle(options[position]); 
    } 
} 

activity_starting.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent" 
    android:layout_height="match_parent"  android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".StartingActivity" 
    android:background="#ffb6a6ff"> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:text="My Manager" 
     android:id="@+id/textView" 
     android:layout_marginTop="65dp" 
     android:textSize="@dimen/abc_action_bar_default_height_material" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:textColor="#ff2312ff" /> 
</RelativeLayout> 

StartingActivity.java

입니다

home_layout.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"/> 
    <!-- the navigation drawer--> 
    <ListView 
     android:id="@+id/left_drawer" 
     android:entries="@array/Options" 
     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="@android:color/holo_purple" 

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

의 AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.abhi.mymanager" > 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name=".StartingActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity android:name=".HomeActivity" 
      android:label="@string/app_name" 
      > 
      </activity> 

    </application> 

</manifest> 

strings.xml의

02-01 17:23:55.811 13075-13082/com.example.abhi.mymanager I/jdwp﹕  Ignoring second debugger -- accepting and dropping 
02-01 17:23:56.171 13075-13075/com.example.abhi.mymanager I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ VFY: unable to resolve virtual method 11346: Landroid/view /ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ VFY: unable to resolve virtual method 11352: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager I/dalvikvm﹕ Could not find method android.view.ViewGroup.onWindowSystemUiVisibilityChanged, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onWindowSystemUiVisibilityChanged 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ VFY: unable to resolve virtual method 11354: Landroid/view/ViewGroup;.onWindowSystemUiVisibilityChanged (I)V 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0008 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ VFY: unable to resolve virtual method 9040: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll()V 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager I/dalvikvm﹕ Could not find method android.view.ViewGroup.onRtlPropertiesChanged, referenced from method android.support.v7.widget.Toolbar.onRtlPropertiesChanged 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ VFY: unable to resolve virtual method 11349: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0007 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ VFY: unable to resolve virtual method 365: Landroid/content/res/TypedArray;.getChangingConfigurations()I 
02-01 17:23:56.181 13075-13075/com.example.abhi.mymanager D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002 
02-01 17:23:56.191 13075-13075/com.example.abhi.mymanager I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType 
02-01 17:23:56.191 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ VFY: unable to resolve virtual method 387: Landroid/content/res/TypedArray;.getType (I)I 
02-01 17:23:56.191 13075-13075/com.example.abhi.mymanager D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x0002 
02-01 17:23:58.851 13075-13082/com.example.abhi.mymanager I/jdwp﹕ Ignoring second debugger -- accepting and dropping 
02-01 17:23:59.561 13075-13082/com.example.abhi.mymanager I/jdwp﹕ Ignoring second debugger -- accepting and dropping 
02-01 17:23:59.911 13075-13075/com.example.abhi.mymanager I/PGA﹕ New SOCKET connection: .abhi.mymanager (pid 13075, tid 13075) 
02-01 17:24:00.081 13075-13082/com.example.abhi.mymanager I/jdwp﹕ Ignoring second debugger -- accepting and dropping 
02-01 17:24:01.661 13075-13075/com.example.abhi.mymanager D/AndroidRuntime﹕ Shutting down VM 
02-01 17:24:01.661 13075-13075/com.example.abhi.mymanager W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb2c9e180) 
02-01 17:24:01.661 13075-13075/com.example.abhi.mymanager D/AndroidRuntime﹕ procName from cmdline: com.example.abhi.mymanager 
02-01 17:24:01.661 13075-13075/com.example.abhi.mymanager E/AndroidRuntime﹕ in writeCrashedAppName, pkgName :com.example.abhi.mymanager 
02-01 17:24:01.671 13075-13075/com.example.abhi.mymanager D/AndroidRuntime﹕ file written successfully with content: com.example.abhi.mymanager StringBuffer : ;com.example.abhi.mymanager 
02-01 17:24:01.681 13075-13082/com.example.abhi.mymanager I/jdwp﹕ Ignoring second debugger -- accepting and dropping 
02-01 17:24:02.081 13075-13082/com.example.abhi.mymanager I/jdwp﹕ Ignoring second debugger -- accepting and dropping 
02-01 17:24:02.531 13075-13082/com.example.abhi.mymanager I/jdwp﹕ Ignoring second debugger -- accepting and dropping 
02-01 17:24:03.021 13075-13075/com.example.abhi.mymanager I/Process﹕ Sending signal. PID: 13075 SIG: 9 
02-01 17:24:03.021 13075-13075/com.example.abhi.mymanager E/AndroidRuntime﹕ FATAL EXCEPTION: main 
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.abhi.mymanager/com.example.abhi.mymanager.HomeActivity}: java.lang.NullPointerException 
       at    android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 
       at android.app.ActivityThread.access$600(ActivityThread.java:123) 
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 
       at android.os.Handler.dispatchMessage(Handler.java:99) 
       at android.os.Looper.loop(Looper.java:137) 
       at android.app.ActivityThread.main(ActivityThread.java:4424) 
       at java.lang.reflect.Method.invokeNative(Native Method) 
       at java.lang.reflect.Method.invoke(Method.java:511) 

     Caused by: java.lang.NullPointerException 
     at java.util.Arrays$ArrayList.<init>(Arrays.java:38) 
     at java.util.Arrays.asList(Arrays.java:154) 
     at android.widget.ArrayAdapter.<init>(ArrayAdapter.java:128) 
     at com.example.abhi.mymanager.HomeActivity.onCreate(HomeActivity.java:28) 
     at android.app.Activity.performCreate(Activity.java:4465) 
     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1051) 
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 
     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 
     at android.app.ActivityThread.access$600(ActivityThread.java:123) 
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 
     at android.os.Handler.dispatchMessage(Handler.java:99) 
     at android.os.Looper.loop(Looper.java:137) 
     at android.app.ActivityThread.main(ActivityThread.java:4424) 
     at java.lang.reflect.Method.invokeNative(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:511) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:825) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:592) 
     at dalvik.system.NativeStart.main(Native Method) 

Answer 1

귀하의 options 배열이 초기화되지

<?xml version="1.0" encoding="utf-8"?> 
<resources> 

    <string name="app_name">My Manager</string> 
    <string name="hello_world">Hello world!</string> 
    <string name="action_settings">Settings</string> 
    <string-array name="Options"> 
     <item name="MyBoard">My Board</item> 
     <item name="CreateBoard">Create Board</item> 
    </string-array> 


</resources> 

로그 캣. 배열로 null을 ArrayAdapter에 전달할 수 없습니다.