新手, 刚做了个拨号器,但是波的号码和输入的号码不一致,什么情况? 高手们帮帮忙!

大侠们, 帮忙看下怎么个情况?

好人有好报阿~
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/input" />
    <EditText
        android:id="@+id/num"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number" >

        <requestFocus />
    </EditText>
    <Button
        android:id="@+id/button"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:text="@string/haha" />

</LinearLayout>

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public class MainActivity extends Activity {
   
    private EditText txt;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        txt=  (EditText) this.findViewById(R.id.num);
        Button button = (Button) this.findViewById(R.id.button);
        button.setOnClickListener(new ButtonClick());
    }

    private final class ButtonClick implements View.OnClickListener {

        @Override
        public void onClick(View v) {
            Intent intent=new Intent();
            String numString=txt.toString();
            intent.setAction("android.intent.action.CALL");//設置意圖
            //intent.addCategory("android.intent.category.DEFAULT");//設置類別
            intent.setData(Uri.parse("tel:"+numString));//傳入用戶輸入的號碼
            System.out.println(txt.toString());
            startActivity(intent);//方法內部會自動為intent添加類別:amdroid.intent.category.DEFAULT
        }
    }
   

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.
    package="my.phone"
    android:versionCode="1"
    android:versionName="1.0" >

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

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:label="@string/app_name"
            android:name=".MainActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
              
            </intent-filter>
        </activity>
    </application>
 <uses-permission android:name="android.permission.CALL_PHONE"/>
</manifest>