在我的应用程序中的send_sms错误

Question

我的应用程序有一个页面回复（发送短信）....但我不能发送消息.....任何人都可以帮助我的代码...我认为它有一个错误在我的代码....我怎么能删除错误...

Reply.java

public class Reply extends Activity { 

EditText replyText; 
Button reply; 
String replyString,name,phoneNo, message,nickname,body; 
SQLiteDatabase messagedb,mydb; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.reply); 

    replyText=(EditText)findViewById(R.id.editTextReply); 
    reply=(Button)findViewById(R.id.buttonReply); 

    Bundle c = getIntent().getExtras(); 

    name= c.getString("nick"); 
    message=c.getString("body"); 

    System.out.println("nickname in reply : "+name); 

    messagedb=this.openOrCreateDatabase("message",0, null); 
    messagedb.execSQL(
      "CREATE TABLE IF NOT EXISTS tab2(nickname varchar,sender INT(13),body varchar)"); 

    Cursor cur1=messagedb.rawQuery("select * from tab2 where nickname='"+name+"'", null); 

    while(cur1.moveToNext()) 
    { 
     phoneNo=cur1.getString(cur1.getColumnIndex("sender")); 
     System.out.println("Number in cur1 : "+phoneNo); 
    } 

    TextView tv = (TextView)findViewById(R.id.textView2); 
    tv.setText(nickname); 

    reply.setOnClickListener(new OnClickListener() { 

     public void onClick(View v) { 
      // TODO Auto-generated method stub 

      message=replyText.getText().toString(); 

      sendSMS(phoneNo, message); 


     } 


    }); 


} 

private void sendSMS(String phoneNumber, String message) 
{   
    PendingIntent pi = PendingIntent.getActivity(this, 0, 
     new Intent(this, MessageViewPage.class), 0);     
    SmsManager sms = SmsManager.getDefault(); 
    sms.sendTextMessage(phoneNumber, null, message, pi, null);   
}  



} 

reply.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" > 

<EditText 
    android:id="@+id/editTextReply" 
    android:layout_width="fill_parent" 
    android:layout_height="300dp" 
    android:background="@drawable/reply_edit" 
    android:paddingLeft="21dp" 
    android:paddingRight="14dp" 
    android:paddingTop="37dp" 
    android:paddingBottom="37dp" 
    android:layout_alignParentTop="true" 
    android:layout_marginTop="50dp"> 
</EditText> 

<Button 
    android:id="@+id/buttonReply" 
    android:layout_width="100dp" 
    android:layout_height="50dp" 
    android:layout_alignParentBottom="true" 
    android:layout_marginBottom="50dp" 
    android:layout_centerHorizontal="true" 
    android:background="@drawable/white_bn" 
    android:layout_marginTop="35dp" 
    android:text="Reply" /> 

<TextView 
    android:id="@+id/textView1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_marginLeft="10dp" 
    android:layout_alignParentTop="true" 
    android:layout_marginTop="14dp" 
    android:text="To : " 
    android:textAppearance="?android:attr/textAppearanceLarge" /> 

<TextView 
    android:id="@+id/textView2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignLeft="@+id/textView1" 
    android:layout_alignParentTop="true" 
    android:layout_marginTop="17dp" 
    android:layout_marginLeft="50dp" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

</RelativeLayout> 

，我也使用许可

<uses-permission android:name="android.permission.SEND_SMS"/> 



    07-06 22:42:35.515: W/dalvikvm(834): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 
    07-06 22:42:35.554: E/AndroidRuntime(834): FATAL EXCEPTION: main 
    07-06 22:42:35.554: E/AndroidRuntime(834): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dpn.pack/com.dpn.pack.MessageViewPage}: java.lang.NullPointerException 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.os.Handler.dispatchMessage(Handler.java:99) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.os.Looper.loop(Looper.java:123) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.app.ActivityThread.main(ActivityThread.java:4627) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at java.lang.reflect.Method.invokeNative(Native Method) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at java.lang.reflect.Method.invoke(Method.java:521) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at dalvik.system.NativeStart.main(Native Method) 
    07-06 22:42:35.554: E/AndroidRuntime(834): Caused by: java.lang.NullPointerException 
    07-06 22:42:35.554: E/AndroidRuntime(834): at com.dpn.pack.MessageViewPage.onCreate(MessageViewPage.java:30) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at  android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
    07-06 22:42:35.554: E/AndroidRuntime(834): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
    07-06 22:42:35.554: E/AndroidRuntime(834): ... 11 more 

Answer 1

修正了MessageViewPage.java线NullPointerException异常30

我觉得你的问题是好你前往sendSms（）行前