Android SQLiteException：无法将db的区域设置更改为“en_US”（无法将类型为system.dbnull的对象）

25-03-09 9

想了解AndroidSQLiteException：无法将db的区域设置更改为“en_US”的新动态吗？本文将为您提供详细的信息，我们还将为您解答关于无法将类型为system.dbnull的对象的相关

想了解Android SQLiteException：无法将db的区域设置更改为“en_US”的新动态吗？本文将为您提供详细的信息，我们还将为您解答关于无法将类型为system.dbnull的对象的相关问题，此外，我们还将为您介绍关于Android 4.1中的区域设置更改后,活动闪烁、Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo、Android java.lang.ClassCastException：无法将android.widget.RelativeLayout强制转换为android.widget.EditText、Android java.lang.IllegalStateException：无法执行活动的方法的新知识。

本文目录一览：

Android SQLiteException：无法将db的区域设置更改为“en_US”（无法将类型为system.dbnull的对象）
Android 4.1中的区域设置更改后,活动闪烁
Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo
Android java.lang.ClassCastException：无法将android.widget.RelativeLayout强制转换为android.widget.EditText
Android java.lang.IllegalStateException：无法执行活动的方法

Android SQLiteException：无法将db的区域设置更改为“en_US”（无法将类型为system.dbnull的对象）

我最近更新了一个(开源) Android应用程序,我的用户正在收到一个我无法复制的异常.关键部分是：

android.database.sqlite.sqliteDatabaseLockedException：数据库被锁定(代码5)

接着

导致：android.database.sqlite.sqliteException：无法将db’/data/data/com.airlocksoftware.hackernews/databases/hacker_news_cache.db’的区域设置更改为“en_US”.

这是在Android 2.3 – 4.2.1的设备上,以及在我尝试连接到数据库的应用程序的多个位置.我使用它后关闭数据库.

我找不到关于“无法更改数据库区域设置”异常的信息.当我看到source for SQLiteConnection (line 386)时,似乎是“android_Metadata”表或“使用新的区域设置更新索引”的问题.

Here is the code that’s causing the exception (on Github).

java.lang.RuntimeException: An error occured while executing doInBackground()
at android.support.v4.content.ModernAsyncTask$3.done(ModernAsyncTask.java:137)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
at java.util.concurrent.FutureTask.run(FutureTask.java:239)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
at java.lang.Thread.run(Thread.java:856) Caused by: android.database.sqlite.sqliteException: Failed to change locale for db '/data/data/com.airlocksoftware.hackernews/databases/hacker_news_cache.db' to 'en_US'.
at android.database.sqlite.sqliteConnection.setLocaleFromConfiguration(sqliteConnection.java:386)
at android.database.sqlite.sqliteConnection.open(sqliteConnection.java:218)
at android.database.sqlite.sqliteConnection.open(sqliteConnection.java:193)
at android.database.sqlite.sqliteConnectionPool.openConnectionLocked(sqliteConnectionPool.java:463)
at android.database.sqlite.sqliteConnectionPool.open(sqliteConnectionPool.java:185)
at android.database.sqlite.sqliteConnectionPool.open(sqliteConnectionPool.java:177)
at android.database.sqlite.sqliteDatabase.openInner(sqliteDatabase.java:804)
at android.database.sqlite.sqliteDatabase.open(sqliteDatabase.java:789)
at android.database.sqlite.sqliteDatabase.openDatabase(sqliteDatabase.java:694)
at android.app.ContextImpl.openorCreateDatabase(ContextImpl.java:854)
at android.content.Contextwrapper.openorCreateDatabase(Contextwrapper.java:229)
at android.database.sqlite.sqliteOpenHelper.getDatabaseLocked(sqliteOpenHelper.java:224)
at android.database.sqlite.sqliteOpenHelper.getWritableDatabase(sqliteOpenHelper.java:164)
at com.airlocksoftware.database.DbInterface.(DbInterface.java:28)
at com.airlocksoftware.hackernews.loader.StoryLoader.loadStories(StoryLoader.java:62)
at com.airlocksoftware.hackernews.loader.StoryLoader.loadInBackground(StoryLoader.java:54)
at com.airlocksoftware.hackernews.loader.StoryLoader.loadInBackground(StoryLoader.java:1)
at android.support.v4.content.AsyncTaskLoader.onLoadInBackground(AsyncTaskLoader.java:240)
at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:51)
at android.support.v4.content.AsyncTaskLoader$LoadTask.doInBackground(AsyncTaskLoader.java:40)
at android.support.v4.content.ModernAsyncTask$2.call(ModernAsyncTask.java:123)
at java.util.concurrent.FutureTask.run(FutureTask.java:234)
... 3 more Caused by: android.database.sqlite.sqliteDatabaseLockedException: database is locked (code 5)
at android.database.sqlite.sqliteConnection.nativeExecute(Native Method)
at android.database.sqlite.sqliteConnection.execute(sqliteConnection.java:548)
at android.database.sqlite.sqliteConnection.setLocaleFromConfiguration(sqliteConnection.java:364)
... 24 more

解决方法

这并不能完全回答这个问题,但是您可能还想查看这篇文章,看看您是否可以将其用于DbHelperSingleton,因为它似乎与您面临的错误相同：

Failed to change locale for db ‘/data/data/my.easymedi.controller/databases/EasyMediInfo.db’ to ‘en_US’

Android 4.1中的区域设置更改后,活动闪烁

我在一年前实现了自定义区域设置选择,但在4.1版本发布后,用户开始抱怨常量活动闪烁.这是我正在使用的代码(从不同的SO答案编译)：

public final class TestApplication extends Application
{
    private Locale desiredLocale = new Locale("ru-RU");

    @Override
    public void onCreate() {
        super.onCreate();
        updateLocale(new Configuration());
    }

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

    private void updateLocale(Configuration newConfig) {
        newConfig.locale = desiredLocale;
        Locale.setDefault(desiredLocale);
        getBaseContext().getResources().updateConfiguration(newConfig,getBaseContext().getResources().getdisplayMetrics());        
    }    
}

应用程序只包含一个空活动,我在更改设备方向后每秒重新创建一次. Here是样本的来源.

看起来所有使用此技术的应用程序都变得无效.什么是正确的方法？

解决方法

此行导致解决方案失败：

getBaseContext().getResources().updateConfiguration(newConfig,getBaseContext().getResources().getdisplayMetrics());

这里定义了正确(至少它可行)的实现
https://stackoverflow.com/a/14010044/554336：

Configuration config = new Configuration();
config.locale = locale;
getResources().updateConfiguration(config,getResources().getdisplayMetrics());

因此每次都应该创建新的配置实例.

Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo

我是编程android的nubie,我知道这里有4m是很多页面为我的问题打乱解决方案,但现在我输了2天仍然没有得到解决方案.请帮我！

首先是我的错误：

01-02 11:08:27.314: D/AndroidRuntime(1045): Shutting down VM
01-02 11:08:27.314: W/dalvikvm(1045): threadid=1: thread exiting with uncaught exception (group=0x409e61f8)
01-02 11:08:27.324: E/AndroidRuntime(1045): FATAL EXCEPTION: main
01-02 11:08:27.324: E/AndroidRuntime(1045): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.wifiscan/com.example.wifiscan.activity_wifi_scan}: java.lang.classNotFoundException: com.example.wifiscan.activity_wifi_scan
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1880)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at  android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.app.ActivityThread.access$600(ActivityThread.java:123)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.os.Looper.loop(Looper.java:137)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.app.ActivityThread.main(ActivityThread.java:4424)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at java.lang.reflect.Method.invokeNative(Native Method)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at java.lang.reflect.Method.invoke(Method.java:511)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at dalvik.system.NativeStart.main(Native Method)
01-02 11:08:27.324: E/AndroidRuntime(1045): Caused by: java.lang.classNotFoundException: com.example.wifiscan.activity_wifi_scan
01-02 11:08:27.324: E/AndroidRuntime(1045):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at java.lang.classLoader.loadClass(ClassLoader.java:501)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at java.lang.classLoader.loadClass(ClassLoader.java:461)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
01-02 11:08:27.324: E/AndroidRuntime(1045):     at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1871)
01-02 11:08:27.324: E/AndroidRuntime(1045):     ... 11 more

我的WifiScan：

 public class WifiScan extends Activity implements OnClickListener {      
     WifiManager wifi;       
     ListView lv;
     TextView textStatus;
     Button buttonScan;
     int size = 0;
     List<ScanResult> results;

     String ITEM_KEY = "key";
     ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
     SimpleAdapter adapter;

     /* Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) 
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_wifi_scan);

         buttonScan = (Button) findViewById(R.id.scan);
         buttonScan.setonClickListener(this);
         lv = (ListView)findViewById(R.id.list);

         wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
         if (wifi.isWifiEnabled() == false)
         {
             Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
             wifi.setWifiEnabled(true);
         }   
         wifi.startScan(); //js dopisal
      //   this.adapter = new SimpleAdapter(WiFiDemo.this, arraylist, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value });
         lv.setAdapter(this.adapter);

              registerReceiver(new broadcastReceiver()
         {
             @Override
             public void onReceive(Context c, Intent intent) 
             {
                results = wifi.getScanResults();
                size = results.size();
             }
         }, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));                    
     }

     public void onClick(View view) 
     {
         arraylist.clear();          
         wifi.startScan();

              Toast.makeText(this, "Scanning...." + size, Toast.LENGTH_SHORT).show();
         try 
         {
             size = size - 1;
             while (size >= 0) 
             {   
                 HashMap<String, String> item = new HashMap<String, String>();                       
                 item.put(ITEM_KEY, results.get(size).SSID + "  " + results.get(size).capabilities);

                 arraylist.add(item);     
                size--;
                 adapter.notifyDataSetChanged();                 
             } 
         }
         catch (Exception e)
         { }         
     }    
 }

我的activity_wifi_scan.xml文件：

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/TableLayout1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context=".WifiScan" >

    <Button    
        android:id="@+id/scan"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="scan"
        android:text="SCAN" />

    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>

</TableLayout>

和我的AndroidManifest文件：

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

        <uses-premission android:name="android.permission.ACCESS_WIFI_STATE"/>
         <uses-permission android:name="android.permission.WAKE_LOCK"/>
        <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
     <uses-permission android:name="android.permission.INTERNET"></uses-permission>
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
     <uses-permission android:name="android.permission.READ_PHONE_STATE"> </uses-permission>
     <uses-permission android:name="android.permission.INTERNET"> </uses-permission>

     <uses-sdk
          android:minSdkVersion="8"
         android:targetSdkVersion="17" />

     <application
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >

     <activity android:name=".activity_wifi_scan">
         <intent-filter>
                 <action android:name="android.intent.action.MAIN"></action>
                 <category android:name="android.intent.category.LAUNCHER"></category>
                 <data />
         </intent-filter>
     </activity>

     <receiver android:name=".activity_wifi_scan">
         <intent-filter>
             <action android:name="android.intent.action.MAIN" />
             <category android:name="android.intent.category.LAUNCHER"/>
            <action android:name="android.net.wifi.WIFI_STATE_CHANGED"/>
         </intent-filter>
     </receiver>        
     </application>
 </manifest>

解决方法:

您的活动名称是WifiScan但您已将其声明为.activity_wifi_scan更改它并重试.

更改<活动>要素：

<activity android:name=".WifiScan">
         <intent-filter>
                 <action android:name="android.intent.action.MAIN"></action>
                 <category android:name="android.intent.category.LAUNCHER"></category>
                 <data />
         </intent-filter>
     </activity>

Android java.lang.ClassCastException：无法将android.widget.RelativeLayout强制转换为android.widget.EditText

单击按钮将我从一个活动带到另一个活动时,我在Android中收到以下异常(我是Android开发中的新手,因此可能不是最聪明的问题)：

java.lang.classCastException: android.widget.RelativeLayout cannot be cast to android.widget.EditText

我试过几次清理项目,尝试过Android Tools中的Fix Project Properties选项,已经检查了xml中的错误,但似乎无法弄清楚.我不得不提到,在发生此异常之前,该按钮可以正常工作一段时间.

这是我的xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/editCustomerPhone"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/background_dark"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".CustomerInfoActivity" >

<FrameLayout
    android:id="@+id/frameLayout1"
    android:layout_width="wrap_content"
    android:layout_height="250dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true"
    android:background="@drawable/ic_new_delivery" >

    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Insert Customer Data:"
        android:textColor="@color/light_blue"
        android:textSize="20sp"
        android:text/>

</FrameLayout>

<EditText
    android:id="@+id/editCustomerName"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/textView1"
    android:layout_alignBottom="@+id/textView1"
    android:layout_alignParentRight="true"
    android:ems="10"
    android:inputType="textPersonName"
    android:textColor="@color/light_blue" />

<Button
    android:id="@+id/submitInfoBtn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView1"
    android:layout_alignParentBottom="true"
    android:layout_alignRight="@+id/editCustomerName"
    android:text="Submit Info"
    android:textColor="@color/light_red" 
    android:onClick="submitCustomerInfo"/>

<EditText
    android:id="@+id/editCustomerPhone"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/editCustomerName"
    android:layout_alignParentRight="true"
    android:layout_alignTop="@+id/TextView01"
    android:ems="10"
    android:inputType="phone"
    android:textColor="@color/light_red" >

    <requestFocus />
</EditText>

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/frameLayout1"
    android:text="Name:"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="@android:color/background_light"
    android:textandroid:typeface="serif" />

<TextView
    android:id="@+id/TextView02"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/editCustomerPhone"
    android:layout_marginTop="14dp"
    android:text="Email:"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="@android:color/background_light"
    android:textandroid:typeface="serif" />

<EditText
    android:id="@+id/editCustomerEmail"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/TextView02"
    android:layout_alignBottom="@+id/TextView02"
    android:layout_alignLeft="@+id/editCustomerPhone"
    android:layout_alignParentRight="true"
    android:ems="10"
    android:inputType="textEmailAddress"
    android:textColor="@color/light_green" />

<TextView
    android:id="@+id/TextView01"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/TextView02"
    android:layout_below="@+id/editCustomerName"
    android:layout_marginTop="19dp"
    android:text="Phone:"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="@android:color/background_light"
    android:textandroid:typeface="serif" />
@H_301_17@
这是我在活动中引发异常的onCreate方法：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_customer_info);

    this.editMail = (EditText)findViewById(R.id.editCustomerEmail);
    this.editName = (EditText)findViewById(R.id.editCustomerName);
    this.editPhone = (EditText)findViewById(R.id.editCustomerPhone); // the exception points me here
}
@H_301_17@
解决方法:
您的代码说：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/editCustomerPhone"
@H_301_17@
editCustomerPhone是相对布局.

Android java.lang.IllegalStateException：无法执行活动的方法

您好，我是学习android的新手，我正尝试在学习Android时制作一个半有用的应用程序（对我自己），基本上我是在第一时间接受有用的Java代码（ping
X，端口扫描）并添加将它们添加到我的应用中，我无法弄清楚 为什么
会发生此错误，我确实认为这与代码的第77行有关，但是我想了解为什么它无法正常工作，因此下次我可以更好地帮助自己。很抱歉出现罗word的问题，我不知道什么时候闭嘴。

01-25 20:42:42.139: E/AndroidRuntime(1307): FATAL EXCEPTION: main
01-25 20:42:42.139: E/AndroidRuntime(1307): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.view.View$1.onClick(View.java:3597)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.view.View.performClick(View.java:4202)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.view.View$PerformClick.run(View.java:17340)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.os.Looper.loop(Looper.java:137)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at dalvik.system.NativeStart.main(Native Method)
01-25 20:42:42.139: E/AndroidRuntime(1307): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:42:42.139: E/AndroidRuntime(1307):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:42:42.139: E/AndroidRuntime(1307):     at android.view.View$1.onClick(View.java:3592)
01-25 20:42:42.139: E/AndroidRuntime(1307):     ... 11 more
01-25 20:42:42.139: E/AndroidRuntime(1307): Caused by: java.lang.NullPointerException
01-25 20:42:42.139: E/AndroidRuntime(1307):     at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:42:42.139: E/AndroidRuntime(1307):     ... 14 more
01-25 20:44:42.549: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2
01-25 20:45:39.759: E/InputDispatcher(511): channel '41b55368 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:45:50.279: E/AndroidRuntime(1625): FATAL EXCEPTION: main
01-25 20:45:50.279: E/AndroidRuntime(1625): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.view.View$1.onClick(View.java:3597)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.view.View.performClick(View.java:4202)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.view.View$PerformClick.run(View.java:17340)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.os.Looper.loop(Looper.java:137)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at dalvik.system.NativeStart.main(Native Method)
01-25 20:45:50.279: E/AndroidRuntime(1625): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:45:50.279: E/AndroidRuntime(1625):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:45:50.279: E/AndroidRuntime(1625):     at android.view.View$1.onClick(View.java:3592)
01-25 20:45:50.279: E/AndroidRuntime(1625):     ... 11 more
01-25 20:45:50.279: E/AndroidRuntime(1625): Caused by: java.lang.NullPointerException
01-25 20:45:50.279: E/AndroidRuntime(1625):     at com.seven.up.MainActivity.OnClickPort(MainActivity.java:78)
01-25 20:45:50.279: E/AndroidRuntime(1625):     ... 14 more
01-25 20:46:32.409: E/InputDispatcher(511): channel '416e8e78 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:46:35.449: E/AndroidRuntime(1830): FATAL EXCEPTION: main
01-25 20:46:35.449: E/AndroidRuntime(1830): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.view.View$1.onClick(View.java:3597)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.view.View.performClick(View.java:4202)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.view.View$PerformClick.run(View.java:17340)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.os.Looper.loop(Looper.java:137)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at dalvik.system.NativeStart.main(Native Method)
01-25 20:46:35.449: E/AndroidRuntime(1830): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:46:35.449: E/AndroidRuntime(1830):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:46:35.449: E/AndroidRuntime(1830):     at android.view.View$1.onClick(View.java:3592)
01-25 20:46:35.449: E/AndroidRuntime(1830):     ... 11 more
01-25 20:46:35.449: E/AndroidRuntime(1830): Caused by: java.lang.NullPointerException
01-25 20:46:35.449: E/AndroidRuntime(1830):     at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:46:35.449: E/AndroidRuntime(1830):     ... 14 more
01-25 20:47:40.119: E/AndroidRuntime(2009): FATAL EXCEPTION: main
01-25 20:47:40.119: E/AndroidRuntime(2009): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.view.View$1.onClick(View.java:3597)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.view.View.performClick(View.java:4202)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.view.View$PerformClick.run(View.java:17340)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.os.Looper.loop(Looper.java:137)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at dalvik.system.NativeStart.main(Native Method)
01-25 20:47:40.119: E/AndroidRuntime(2009): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:47:40.119: E/AndroidRuntime(2009):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:47:40.119: E/AndroidRuntime(2009):     at android.view.View$1.onClick(View.java:3592)
01-25 20:47:40.119: E/AndroidRuntime(2009):     ... 11 more
01-25 20:47:40.119: E/AndroidRuntime(2009): Caused by: java.lang.NullPointerException
01-25 20:47:40.119: E/AndroidRuntime(2009):     at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:47:40.119: E/AndroidRuntime(2009):     ... 14 more
01-25 20:49:29.979: E/InputDispatcher(511): channel '414e7770 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:49:30.149: E/jdwp(2216): Failed sending reply to debugger: Broken pipe
01-25 20:49:41.599: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2
01-25 20:50:12.539: E/InputDispatcher(511): channel '41c0a160 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:50:13.629: E/InputManager-JNI(511): An exception was thrown by callback 'interceptKeyBeforeQueueing'.
01-25 20:50:13.629: E/InputManager-JNI(511): java.lang.NullPointerException
01-25 20:50:13.629: E/InputManager-JNI(511):    at com.android.internal.policy.impl.PhoneWindowManager.interceptKeyBeforeQueueing(PhoneWindowManager.java:3948)
01-25 20:50:13.629: E/InputManager-JNI(511):    at com.android.server.wm.InputMonitor.interceptKeyBeforeQueueing(InputMonitor.java:337)
01-25 20:50:13.629: E/InputManager-JNI(511):    at com.android.server.input.InputManagerService.interceptKeyBeforeQueueing(InputManagerService.java:1346)
01-25 20:50:13.629: E/InputManager-JNI(511):    at dalvik.system.NativeStart.run(Native Method)
01-25 20:50:13.899: E/InputManager-JNI(511): An exception was thrown by callback 'interceptKeyBeforeQueueing'.
01-25 20:50:13.899: E/InputManager-JNI(511): java.lang.NullPointerException
01-25 20:50:13.899: E/InputManager-JNI(511):    at com.android.internal.policy.impl.PhoneWindowManager.interceptKeyBeforeQueueing(PhoneWindowManager.java:3948)
01-25 20:50:13.899: E/InputManager-JNI(511):    at com.android.server.wm.InputMonitor.interceptKeyBeforeQueueing(InputMonitor.java:337)
01-25 20:50:13.899: E/InputManager-JNI(511):    at com.android.server.input.InputManagerService.interceptKeyBeforeQueueing(InputManagerService.java:1346)
01-25 20:50:13.899: E/InputManager-JNI(511):    at dalvik.system.NativeStart.run(Native Method)
01-25 20:50:19.759: E/InputDispatcher(511): channel '41419b38 com.seven.up/com.seven.up.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
01-25 20:51:49.459: E/WeatherXmlParser(2522): Couldn't parse Yahoo weather XML
01-25 20:51:49.459: E/WeatherXmlParser(2522): java.lang.NumberFormatException: Invalid float: ""
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at java.lang.StringToReal.invalidReal(StringToReal.java:63)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at java.lang.StringToReal.parseFloat(StringToReal.java:289)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at java.lang.Float.parseFloat(Float.java:300)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at com.cyanogenmod.lockclock.weather.WeatherXmlParser.getFloatForAttribute(WeatherXmlParser.java:86)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at com.cyanogenmod.lockclock.weather.WeatherXmlParser.parseWeatherResponse(WeatherXmlParser.java:108)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at com.cyanogenmod.lockclock.weather.WeatherUpdateService$WeatherUpdateTask.doInBackground(WeatherUpdateService.java:210)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at com.cyanogenmod.lockclock.weather.WeatherUpdateService$WeatherUpdateTask.doInBackground(WeatherUpdateService.java:126)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at java.util.concurrent.FutureTask.run(FutureTask.java:234)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
01-25 20:51:49.459: E/WeatherXmlParser(2522):   at java.lang.Thread.run(Thread.java:856)
01-25 20:52:24.619: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2
01-25 20:57:07.229: E/AndroidRuntime(2410): FATAL EXCEPTION: main
01-25 20:57:07.229: E/AndroidRuntime(2410): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.view.View$1.onClick(View.java:3597)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.view.View.performClick(View.java:4202)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.view.View$PerformClick.run(View.java:17340)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.os.Looper.loop(Looper.java:137)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at dalvik.system.NativeStart.main(Native Method)
01-25 20:57:07.229: E/AndroidRuntime(2410): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:57:07.229: E/AndroidRuntime(2410):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:57:07.229: E/AndroidRuntime(2410):     at android.view.View$1.onClick(View.java:3592)
01-25 20:57:07.229: E/AndroidRuntime(2410):     ... 11 more
01-25 20:57:07.229: E/AndroidRuntime(2410): Caused by: java.lang.NullPointerException
01-25 20:57:07.229: E/AndroidRuntime(2410):     at com.seven.up.MainActivity.OnClickPort(MainActivity.java:77)
01-25 20:57:07.229: E/AndroidRuntime(2410):     ... 14 more
01-25 20:59:12.549: E/AndroidRuntime(3168): FATAL EXCEPTION: main
01-25 20:59:12.549: E/AndroidRuntime(3168): java.lang.IllegalStateException: Could not execute method of the activity
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.view.View$1.onClick(View.java:3597)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.view.View.performClick(View.java:4202)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.view.View$PerformClick.run(View.java:17340)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.os.Handler.handleCallback(Handler.java:725)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.os.Looper.loop(Looper.java:137)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.app.ActivityThread.main(ActivityThread.java:5191)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at dalvik.system.NativeStart.main(Native Method)
01-25 20:59:12.549: E/AndroidRuntime(3168): Caused by: java.lang.reflect.InvocationTargetException
01-25 20:59:12.549: E/AndroidRuntime(3168):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at java.lang.reflect.Method.invoke(Method.java:511)
01-25 20:59:12.549: E/AndroidRuntime(3168):     at android.view.View$1.onClick(View.java:3592)
01-25 20:59:12.549: E/AndroidRuntime(3168):     ... 11 more
01-25 20:59:12.549: E/AndroidRuntime(3168): Caused by: java.lang.NullPointerException
01-25 20:59:12.549: E/AndroidRuntime(3168):     at com.seven.up.MainActivity.OnClickPort(MainActivity.java:76)
01-25 20:59:12.549: E/AndroidRuntime(3168):     ... 14 more
01-25 21:01:13.939: E/MPL-storeload(511): calData from inv_save_mpl_states,size=2






package com.seven.up;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.*;

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {
    EditText ip_address_field;
    TextView scan_out;
    TextView port_results;
    EditText startPort;
    EditText stopPort;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ip_address_field = (EditText) findViewById(R.id.ip_address_field);
        ip_address_field.getText();
        scan_out = (TextView) findViewById(R.id.scan_out);

        Button scan_button = (Button) findViewById(R.id.scan_button);
        scan_button.setOnClickListener(this);
    }

    public void onClick(View v) {
        Editable host = ip_address_field.getText();

        switch (v.getId()) {

        case R.id.scan_button:
            try {
                String pingCmd = "ping -c 5 " + host;
                String pingResult = "";
                Runtime r = Runtime.getRuntime();
                Process p = r.exec(pingCmd);
                BufferedReader in = new BufferedReader(new InputStreamReader(
                        p.getInputStream()));
                String inputLine;
                while ((inputLine = in.readLine()) != null) {
                    System.out.println(inputLine);
                    scan_out.setText(inputLine + "\n" + "\n");
                    pingResult += inputLine;
                    scan_out.setText("/n" + pingResult);
                }
                in.close();
            }// try
            catch (IOException e) {
                System.out.println(e);
            }
            break;

        default:
            break;
        }

    }

    public void OnClickPort(View v) {
        switch (v.getId()) {
        case R.id.button1:

        int startPortRange = Integer.parseInt(startPort.getText().toString());
        int stopPortRange = Integer.parseInt(stopPort.getText().toString());

        for (int i = startPortRange; i <= stopPortRange; i++) {
            try {
                Socket ServerSok = new Socket("192.168.0.1",i);

                Toast.makeText(getApplicationContext(),"Port in use: " + i,Toast.LENGTH_LONG).show();

                ServerSok.close();
            } catch (Exception e) {
            }
            System.out.println("Port not in use: " + i);
        } 
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.activity_main,menu);
        return super.onCreateOptionsMenu(menu);
    }
}

关于Android SQLiteException：无法将db的区域设置更改为“en_US”和无法将类型为system.dbnull的对象的问题就给大家分享到这里，感谢你花时间阅读本站内容，更多关于Android 4.1中的区域设置更改后,活动闪烁、Android FATAL EXCEPTION MAIN：java.lang.RuntimeException：无法启动活动ComponentInfo、Android java.lang.ClassCastException：无法将android.widget.RelativeLayout强制转换为android.widget.EditText、Android java.lang.IllegalStateException：无法执行活动的方法等相关知识的信息别忘了在本站进行查找喔。

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