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아래의 로그를 확인하고 난 다시 보낼 AddContactActivity에서 제공된 코드 가능한 변화를 제안 - 연락처 이름을 어떠한 의도를 통해 setresult를 사용하지 않고 (inent, 1)방법이 나갈 : nullpointer 예외
그러나 그것은 NullPointerException이 (오류 로그에 검사를)를 보여줍니다
오류 로그가 표시되고 :
03-30 10:16:17.069: E/AndroidRuntime(337): FATAL EXCEPTION: main
03-30 10:16:17.069: E/AndroidRuntime(337): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=1, data=Intent { (has extras) }} to activity {com.main.listintent/com.main.listintent.ContactsActivity}: java.lang.NullPointerException
03-30 10:16:17.069: E/AndroidRuntime(337): at android.app.ActivityThread.deliverResults(ActivityThread.java:2532)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.app.ActivityThread.handleSendResult(ActivityThread.java:2574)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.app.ActivityThread.access$2000(ActivityThread.java:117)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:961)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.os.Handler.dispatchMessage(Handler.java:99)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.os.Looper.loop(Looper.java:123)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.app.ActivityThread.main(ActivityThread.java:3683)
03-30 10:16:17.069: E/AndroidRuntime(337): at java.lang.reflect.Method.invokeNative(Native Method)
03-30 10:16:17.069: E/AndroidRuntime(337): at java.lang.reflect.Method.invoke(Method.java:507)
03-30 10:16:17.069: E/AndroidRuntime(337): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-30 10:16:17.069: E/AndroidRuntime(337): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-30 10:16:17.069: E/AndroidRuntime(337): at dalvik.system.NativeStart.main(Native Method)
03-30 10:16:17.069: E/AndroidRuntime(337): Caused by: java.lang.NullPointerException
03-30 10:16:17.069: E/AndroidRuntime(337): at com.main.listintent.ContactsActivity.onActivityResult(ContactsActivity.java:43)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.app.Activity.dispatchActivityResult(Activity.java:3908)
03-30 10:16:17.069: E/AndroidRuntime(337): at android.app.ActivityThread.deliverResults(ActivityThread.java:2528)
03-30 10:16:17.069: E/AndroidRuntime(337): ... 11 more
layout_main :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
</RelativeLayout>
layout_contacts :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<LinearLayout
android:id="@+id/contacts_title_linear_layout"
android:layout_width="fill_parent"
android:layout_height="45dp"
android:background="@android:color/darker_gray" >
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:paddingLeft="10dp"
android:text="@string/contacts_label"
android:textColor="@android:color/black"
android:textSize="20sp"
android:textStyle="bold" />
<Button
android:id="@+id/add_contacts_cancel_button"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/new_button"
android:textStyle="bold" />
</LinearLayout>
<ListView
android:id="@+id/contacts_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/contacts_title_linear_layout" >
</ListView>
</RelativeLayout>
layout_add_contacts :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/add_contacts_title_layout"
android:layout_width="match_parent"
android:layout_height="45dp"
android:background="@android:color/darker_gray" >
<TextView
android:id="@+id/add_contacts_title_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="@string/add_contact_label"
android:textColor="@android:color/black"
android:textSize="20sp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:id="@+id/add_contacts_details_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingTop="10dp"
android:text="@string/add_contacts_contact_name"
android:textColor="@android:color/black"
android:textSize="18sp" />
<EditText
android:id="@+id/add_contacts_name_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:ems="10"
android:inputType="textPersonName" />
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingTop="6dp"
android:text="@string/add_contacts_no"
android:textColor="@android:color/black"
android:textSize="18sp" />
<EditText
android:id="@+id/add_contacts_no_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:ems="10"
android:inputType="number" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center" >
<Button
android:id="@+id/add_contacts_cancel_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/cancel_button"
android:textSize="18sp"
android:width="100dp" />
<Button
android:id="@+id/add_contacts_add_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/add_button"
android:textSize="18sp"
android:width="100dp" />
</LinearLayout>
</LinearLayout>
MainActivity.java
package com.main.listintent;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intentcontacts=new Intent(this, ContactsActivity.class);
startActivity(intentcontacts);
}
}
ContactsActivity.java
package com.main.listintent;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
public class ContactsActivity extends Activity implements OnClickListener{
ArrayList<String> arr;
Button btnnew;
ListView lvcontacts;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_contacts);
btnnew=(Button)findViewById(R.id.add_contacts_cancel_button);
lvcontacts=(ListView)findViewById(R.id.contacts_list);
btnnew.setOnClickListener(this);
}
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intentaddcontact=new Intent(this, AddContactActivity.class);
startActivityForResult(intentaddcontact, 1);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==1 && resultCode==1){
Bundle bundle=data.getExtras();
arr.add(bundle.getString("contactname"));
ArrayAdapter<String>adp=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arr);
lvcontacts.setAdapter(adp);
}
}
}
AddContactActivity.java :
package com.main.listintent;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class AddContactActivity extends Activity implements OnClickListener{
Button btncancel,btnadd;
EditText txtcontactname,txtcontactno;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_add_contacts);
txtcontactname=(EditText)findViewById(R.id.add_contacts_name_text);
txtcontactno=(EditText)findViewById(R.id.add_contacts_no_text);
btnadd=(Button)findViewById(R.id.add_contacts_add_button);
btncancel=(Button)findViewById(R.id.add_contacts_cancel_button);
btnadd.setOnClickListener(this);
btncancel.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v==btnadd){
Bundle bundle=new Bundle();
bundle.putString("contactname", txtcontactname.getText().toString());
bundle.putString("contactno", txtcontactno.getText().toString());
Intent intentcontacts=new Intent();
intentcontacts.putExtras(bundle);
setResult(1, intentcontacts);
finish();
}
else if(v==btncancel){
setResult(0);
finish();
}
}
}
안드로이드 그것이 의도 수신기()는 예외로하여 onActivityResult 던져 수단
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.main.listintent"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="10" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar" >
<activity
android:name="com.main.listintent.MainActivity"
android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="ContactsActivity">
</activity>
<activity android:name="AddContactActivity" android:windowSoftInputMode="adjustResize">
</activity>
</application>
</manifest>
문제가 해결되었습니다. 많은 감사 –